Tag Archives: 6908 bearing

China Best Sales CZPT High Quality Radial Ball Bearing Deep Groove Ball Bearing 6908 Series drive shaft bearing

Product Description

KGG:Precision Deep Groove Ball Bearing

Advantages and features of CZPT bearings

∞ CZPT Ball Bearings consist of an outer ring, an inner ring, and a plurality of rollers and spacers. The bearing with high rotation accuracy capable of bearing loads in every direction. Because it has orthogonally arranged cylindrical rollers, it can bear loads in every direction. CZPT provides 2 kinds of bearings: Deep Groove Ball Bearing and Angular Contact Ball Bearings.   

∞ ACBB, which is the abbreviation of angular contact ball bearings. With different contact angles, the higher axial load can be well taken care now. CZPT standard ball bearings are the perfect solution for high runout accuracy applications such as machine tool main spindles.

∞ Deep groove ball bearings are widely used in many industries for decades. A deep groove is formed on each inner and outer ring of the bearings enabling them to sustain radial and axial loads or even combinations of both. As the leading deep groove ball bearing factory, CZPT Bearings owns abundant experience in designing and producing this type of bearing.                           

Application:

1. Medical industry
2.Lithium battery industry
3.Solar photovoltaic industry
4. Semi conductor Industry
5. General industry machinery
6. Machine tool
7. Parking system
8. High-speed rail and aviation transportation equipment
9. 3C industry etc

Specification List
 

Boundary Dimensions (mm) Basic Load Ratings(N) Limiting Speeds (rpm) Bearing Numbers Type Snap ring groove dimensions Snap ring
dimensions
d D B r dynamic
Cr		 static Cor Grease Oil Open
type		 Shield
ZZ		 Seal
non-contact
LLB		 Low
torque
type
LLH		 Seal
contact
LLU		 Snap ring
groove		 Snap
ring		 D1 a b ro D2 f
min Open Z,ZZ
LB,LLB		 LLH LU LLU Open Z LB max max min max max max
10 19 5 0.3 1830 925 32000 – 24000 38000 6800 ZZ LLB – LLU – – – – – – – –
22 6 0.3 2700 1270 30000 – 21000 36000 6900 ZZ LLB – LLU N NR 20.8 1.05 0.8 0.2 24.8 0.7
26 8 0.3 4550 1960 29000 25000 21000 34000 6000 ZZ LLB LLH LLU N NR – – – – – –
30 9 0.6 5100 2390 25000 21000 18000 30000 6200 ZZ LLB LLH LLU N NR 28.17 2.06 1.35 0.4 34.7 1.12
35 11 0.6 8200 3500 23000 20000 16000 27000 6300 ZZ LLB LLH LLU N NR 33.17 2.06 1.35 0.4 39.7 1.12
12 21 5 0.3 1920 1040 29000 – 20000 35000 6801 ZZ LLB – LLU – – – – – – – –
24 6 0.3 2890 1460 27000 – 19000 32000 6901 ZZ LLB – LLU N NR 22.8 1.05 0.8 0.2 26.8 0.7
28 7 0.3 5100 2390 26000 – – 30000 16001 – – – – – – – – – – – –
28 8 0.3 5100 2390 26000 21000 18000 30000 6001 ZZ LLB LLH LLU N NR – – – – – –
32 10 0.6 6100 2750 22000 20000 16000 26000 6201 ZZ LLB LLH LLU N NR 30.5 2.06 1.35 0.4 36.7 1.12
37 12 1 9700 4200 20000 19000 15000 24000 6301 ZZ LLB LLH LLU N NR 34.77 2.06 1.35 0.4 41.3 1.12
15 24 5 0.3 2080 1260 26000 – 17000 31000 6802 ZZ LLB – LLU – – – – – – – –
28 7 0.3 3650 2000 24000 – 16000 28000 6902 ZZ LLB – LLU N NR 26.7 1.3 0.95 0.25 30.8 0.85
32 8 0.3 5600 2830 22000 – – 26000 16002 – – – – – – – – – – – –
32 9 0.3 5600 2830 22000 18000 15000 26000 6002 ZZ LLB LLH LLU N NR 30.15 2.06 1.35 0.4 36.7 1.12
35 11 0.6 7750 3600 19000 18000 15000 23000 6202 ZZ LLB LLH LLU N NR 33.17 2.06 1.35 0.4 39.7 1.12
42 13 1 11400 5450 17000 15000 12000 21000 6302 ZZ LLB LLH LLU N NR 39.75 2.06 1.35 0.4 46.3 1.12
17 24 5 0.3 2080 1260 26000 – 17000 31000 6802 ZZ LLB – LLU – – – – – – – –
28 7 0.3 3650 2000 24000 – 16000 28000 6902 ZZ LLB – LLU N NR 28.7 1.3 0.95 0.25 32.8 0.85
32 8 0.3 5600 2830 22000 – – 26000 16002 – – – – – – – – – – – –
32 9 0.3 5600 2830 22000 18000 15000 26000 6002 ZZ LLB LLH LLU N NR 33.17 2.06 1.35 0.4 39.7 1.12
35 11 0.6 7750 3600 19000 18000 15000 23000 6202 ZZ LLB LLH LLU N NR 38.1 2.06 1.35 0.4 44.6 1.12
42 13 1 11400 5450 17000 15000 12000 21000 6302 ZZ LLB LLH LLU N NR 44.6 2.46 1.35 0.4 52.7 1.12
20 32 7 0.3 4000 2470 21000 – 13000 25000 6804 ZZ LLB – LLU N NR 30.7 1.3 0.95 0.25 34.8 0.85
37 9 0.3 6400 3700 19000 – 12000 23000 6904 ZZ LLB – LLU N NR 35.7 1.7 0.95 0.25 39.8 0.85
42 8 0.3 7900 4500 18000 – – 21000 16004 – – – – – – – – – – – –
42 12 0.6 9400 5050 18000 13000 11000 21000 6004 ZZ LLB LLH LLU N NR 39.75 2.06 1.35 0.4 46.3 1.12
47 14 1 12800 6650 16000 12000 10000 18000 6204 ZZ LLB LLH LLU N NR 44.6 2.46 1.35 0.4 52.7 1.12
52 15 1.1 15900 7900 14000 12000 10000 17000 6304 ZZ LLB LLH LLU N NR 49.73 2.46 1.35 0.4 57.9 1.12
22 44 12 0.6 9400 5050 17000 13000 10000 20000 60/22 ZZ LLB LLH LLU N NR 41.75 2.06 1.35 0.4 48.3 1.12
50 14 1 12900 6800 14000 12000 9700 17000 62/22 ZZ LLB LLH LLU N NR 47.6 2.46 1.35 0.4 55.7 1.12
56 16 1.1 18400 9250 13000 11000 9200 15000 63/22 ZZ LLB LLH LLU N NR 53.6 2.46 1.35 0.4 61.7 1.12
25 37 7 0.3 4300 2950 18000 – 10000 21000 6805 ZZ LLB – LLU N NR 35.7 1.3 0.95 0.25 39.8 0.85
42 9 0.3 7050 4550 16000 – 9800 19000 6905 ZZ LLB – LLU N NR 40.7 1.7 0.95 0.25 44.8 0.85
47 8 0.3 8350 5100 15000 – – 18000 16005 – – – – – – – – – – – –
47 12 0.6 15710 5850 15000 11000 9400 18000 6005 ZZ LLB LLH LLU N NR 44.6 2.06 1.35 0.4 52.7 1.12
52 15 1 14000 7850 13000 11000 8900 15000 6205 ZZ LLB LLH LLU N NR 49.73 2.46 1.35 0.4 57.9 1.12
62 17 1.1 21200 10900 12000 9700 8100 14000 6305 ZZ LLB LLH LLU N NR 59.61 3.28 1.9 0.6 67.7 1.7
80 21 1.5 34500 17500 10000 – – 12000 6405 – – – – – – – – – – – –
28 52 12 0.6 12500 7400 14000 10000 8400 16000 60/28 ZZ LLB LLH LLU N NR 49.7 2.06 1.35 0.4 57.9 1.12
58 16 1 17900 9750 12000 9700 8100 14000 62/28 ZZ LLB LLH LLU N NR 55.6 2.46 1.35 0.4 63.7 1.12
68 18 1.1 26700 14000 11000 8900 7400 13000 63/28 ZZ LLB LLH LLU N NR 64.82 3.28 1.9 0.6 74.6 1.7
30 42 7 0.3 4700 3650 15000 – 8800 18000 6806 ZZ LLB – LLU N NR 40.7 1.3 0.95 0.25 44.8 0.85
47 9 0.3 7250 5000 14000 – 8400 17000 6906 ZZ LLB – LLU N NR 45.7 1.7 0.95 0.25 49.8 0.85
55 9 0.3 11200 7350 13000 – – 15000 16006* – – – – – – – – – – – –
55 13 1 13200 8300 13000 9200 7700 15000 6006 ZZ LLB LLH LLU N NR 52.6 2.08 1.35 0.4 60.7 1.12
62 16 1 19500 11300 11000 8800 7300 13000 6206 ZZ LLB LLH LLU N NR 59.61 3.28 1.9 0.6 67.7 1.7
72 19 1.1 26700 15000 10000 7900 6600 12000 6306 ZZ LLB LLH LLU N NR 68.81 3.28 1.9 0.6 78.6 1.7
32 58 13 1 11800 8050 12000 8700 7200 15000 60/32 ZZ LLB LLH LLU N NR 55.6 2.08 1.35 0.4 63.7 1.12
65 17 1 20700 11600 11000 8400 7100 12000 62/32 ZZ LLB LLH LLU N NR 62.6 3.28 1.9 0.6 70.7 1.7
75 20 1.1 29800 16900 9500 7700 6500 11000 63/32* ZZ LLB LLH LLU N NR 71.83 3.28 1.9 0.6 81.6 1.7
35 47 7 0.3 4900 4050 13000 – – 16000 6807* ZZ LLB – LLU N NR 45.7 1.3 0.95 0.25 49.8 0.85
55 10 0.6 9550 6850 12000 – 7100 15000 6907 ZZ LLB – LLU N NR 53.7 1.7 0.95 0.25 57.8 0.85
62 9 0.3 11700 8200 12000 – – 14000 16007* – – – – – – – – – – – –
62 14 1 16000 10300 12000 8200 6800 14000 6007 ZZ LLB LLH LLU N NR 59.61 2.08 1.9 0.6 67.7 1.7
72 17 1.1 25700 15300 9800 7600 6300 11000 6207 ZZ LLB LLH LLU N NR 68.81 3.28 1.9 0.6 78.6 1.7
80 21 1.5 33500 19100 8800 7300 6000 10000 6307 ZZ LLB LLH LLU N NR 76.81 3.28 1.9 0.6 86.6 1.7
52 7 0.3 5100 4400 12000 – – 14000 6808 ZZ LLB – LLU N NR 50.7 1.3 0.95 0.25 54.8 0.85
40 62 12 0.6 12200 8900 11000 – 6300 13000 6908 ZZ LLB – LLU N NR 60.7 1.7 0.95 0.25 64.8 0.85
68 9 0.3 12600 9650 10000 – – 12000 16008* – – – – – – – – – – – –
68 15 1 16800 11500 10000 7300 6100 12000 6008 ZZ LLB LLH LLU N NR 64.82 2.49 1.9 0.6 74.6 1.7
80 18 1.1 29100 17800 8700 6700 5600 10000 6208 ZZ LLB LLH LLU N NR 76.81 3.28 1.9 0.6 86.6 1.7
90 23 1.5 40500 24000 7800 6400 5300 9200 6308 ZZ LLB LLH LLU N NR 86.79 3.28 2.7 0.6 96.5 2.46
45 58 7 0.3 5350 4950 11000 – 5900 12000 6809* ZZ LLB – LLU N NR 56.7 1.3 0.95 0.25 60.8 0.85
68 12 0.6 13100 10400 9800 – 5600 12000 6909 ZZ LLB – LLU N NR 66.7 1.7 0.95 0.25 70.8 0.85
75 10 0.6 12900 10500 9200 – – 11000 16009* – – – – – – – – – – – –
75 16 1 21000 15100 9200 6500 5400 11000 6009 ZZ LLB LLH LLU N NR 71.83 2.49 1.9 0.6 81.6 1.7
85 19 1.1 32500 20400 7800 6200 5200 9200 6209 ZZ LLB LLH LLU N NR 81.81 3.28 1.9 0.6 91.6 1.7
100 25 1.5 53000 32000 7000 5600 4700 8200 6309 ZZ LLB LLH LLU N NR 96.8 3.28 2.7 0.6 106.5 2.46
50 65 7 0.3 6600 6100 9600 – 5300 11000 6810 ZZ LLB – LLU N NR 63.7 1.3 0.95 0.25 67.8 0.85
72 12 0.6 13400 11200 8900 – 5100 11000 6910* ZZ LLB – LLU N NR 70.7 1.7 0.95 0.25 74.8 0.85
80 10 0.6 13200 11300 8400 – – 9800 16571 – – – – – – – – – – – –
80 16 1 21800 16600 8400 6000 5000 9800 6571 ZZ LLB LLH LLU N NR 76.81 2.49 1.9 0.6 86.6 1.7
90 20 1.1 35000 23200 7100 5700 4700 8300 6210 ZZ LLB LLH LLU N NR 86.79 3.28 2.7 0.6 96.5 2.46
110 27 2 62000 38500 6400 5000 4200 7500 6310 ZZ LLB LLH LLU N NR 106.81 3.28 2.7 0.6 116.6 2.46
55 72 9 0.3 8800 8100 8700 – 4800 10000 6811* ZZ LLB – LLU N NR 70.7 1.7 0.95 0.25 74.8 0.85
80 13 1 16000 13300 8200 – 4600 9600 6911* ZZ LLB – LLU N NR 77.9 2.1 1.3 0.4 84.4 1.12
90 11 0.6 18600 15300 7700 – – 9000 16011* – – – – – – – – – – – –
90 18 1.1 28300 21200 7700 – 4500 9000 6011 ZZ LLB – LLU N NR 86.79 2.87 2.7 0.6 96.5 2.46
100 21 1.5 43500 29200 6400 – 4300 7600 6211* ZZ LLB – LLU N NR 96.8 3.28 2.7 0.6 106.5 2.46
120 29 2 71500 45000 5800 – 3900 6800 6311 ZZ LLB – LLU N NR 115.21 4.06 3.1 0.6 129.7 2.82
60 78 10 0.3 11500 10600 8000 – 4400 9400 6812* ZZ LLB – LLU N NR 76.2 1.7 1.3 0.4 82.7 1.12
85 13 1 16400 14300 7600 – 4300 8900 6912* ZZ LLB – LLU N NR 82.9 2.1 1.3 0.4 89.4 1.12
95 11 0.6 20000 17500 7000 – – 8300 16012* – – – – – – – – – – – –
95 18 1.1 29500 23200 7000 – 4100 8300 6012* ZZ LLB – LLU N NR 91.82 2.87 2.7 0.6 101.6 2.46
110 22 1.5 52500 36000 6000 – 3800 7000 6212 ZZ LLB – LLU N NR 106.81 3.28 2.7 0.6 116.6 2.46
130 31 2.1 82000 52000 5400 – 3600 6300 6312 ZZ LLB – LLU N NR 125.22 4.06 3.1 0.6 139.7 2.82
65 140 33 2.1 92500 60000 4900 – – 5800 6313 – – – – – – – – – – – –
70 150 35 3 104000 68000 4100 – – 4800 6314* – – – – – – – – – – – –

Abutment and fillet dimensions (mm) Weight (kg)
da Da ra Dx CY CZ rNa Open (Approx)
min max max max (Approx.) max max max
12 12.5 17 0.3 – – – – 0.005
12 13 20 0.3 25.5 1.5 0.7 0.3 0.009
12 13.5 24 0.3 – – – – 0.019
14 16 26 0.6 35.5 2.9 1.2 0.5 0.032
14 17 31 0.6 40.5 2.9 1.2 0.5 0.053
14 14.5 19 0.3 – – – – 0.006
14 15 22 0.3 27.5 1.5 0.7 0.3 0.011
14 – 26 0.3 – – – – 0.019
14 16 26 0.3 – – – – 0.571
16 17 28 0.6 37.5 2.9 1.2 0.5 0.037
17 18.5 32 1 42 2.9 1.2 0.5 0.06
17 17.5 22 0.3 – – – – 0.007
17 17.5 26 0.3 31.5 1.9 0.9 0.3 0.016
17 – 30 0.3 – – – – 0.571
17 19 30 0.3 37.5 2.9 1.2 0.3 0.03
19 20 31 0.6 40.5 2.9 1.2 0.5 0.045
20 23 37 1 47 2.9 1.2 0.5 0.082
19 19.5 24 0.3 – – – – 0.008
19 20 28 0.3 33.5 1.9 0.9 0.3 0.018
19 – 33 0.3 – – – – 0.032
19 21 33 0.3 40.5 2.9 1.2 0.3 0.039
21 23 36 0.6 45.5 2.9 1.2 0.5 0.066
22 25 42 1 53.5 3.3 1.2 0.5 0.115
22 22.5 30 0.3 35.5 1.9 0.9 0.3 0.019
22 24 35 0.3 40.5 2.3 0.9 0.3 0.036
22 – 40 0.3 – – – – 0.051
24 26 38 0.6 47 2.9 1.2 0.5 0.069
25 28 42 1 53.5 3.3 1.2 0.5 0.106
26.5 28.5 45.5 1 58.5 3.3 1.2 0.5 0.144
26 26.5 40 0.6 49 2.9 1.2 0.5 0.074
27 29.5 45 1 56.5 3.3 1.2 0.5 0.117
28.5 31 49.5 1 62.5 3.3 1.2 0.5 0.176
27 28 35 0.3 40.5 1.9 0.9 0.3 0.571
27 29 40 0.3 45.5 2.3 0.9 0.3 0.042
27 – 45 0.3 – – – – 0.06
29 30.5 43 0.6 53.5 2.9 1.2 0.5 0.08
30 32 47 1 58.5 3.3 1.2 0.5 0.128
31.5 35 55.5 1 68.5 4.6 1.7 0.5 0.232
33 – 72 1.5 – – – – 0.53
32 34 48 0.6 58.5 2.9 1.2 0.5 0.098
33 35.5 53 1 64.5 3.3 1.2 0.5 0.171
34.5 38.5 61.5 1 76 4.6 1.7 0.5 0.284
32 33 40 0.3 45.5 1.9 0.9 0.3 0.026
32 34 45 0.3 50.5 2.3 0.9 0.3 0.048
32 – 53 0.3 – – – – 0.091
35 37 50 1 61.5 2.9 1.2 0.5 0.116
35 39 57 1 68.5 4.6 1.7 0.5 0.199
36.5 43 65.5 1 80 4.6 1.7 0.5 0.36
37 39 53 1 64.5 2.9 1.2 0.5 0.129
37 40 60 1 71.5 4.6 1.7 0.5 0.226
38.5 43.5 68.5 1 83 4.6 1.7 0.5 0.382
37 38 45 0.3 50.5 1.9 0.9 0.3 0.571
39 40 51 0.6 58.8 2.3 0.9 0.5 0.074
37 – 60 0.3 – – – – 0.11
40 42 57 1 68.5 3.4 1.7 0.5 0.155
41.5 45 65.5 1 80 4.6 1.7 0.5 0.288
43 47 72 1.5 88 4.6 1.7 0.5 0.457
42 43 50 0.3 55.5 1.9 0.9 0.3 0.033
44 45 58 0.6 65.5 2.3 0.9 0.5 0.11
42 – 66 0.3 – – – – 0.125
45 47 63 1 76 3.8 1.7 0.5 0.19
46.5 51 73.5 1 88 4.6 1.7 0.5 0.366
48 54 82 1.5 98 5.4 2.5 0.5 0.63
47 48 56 0.3 61.5 1.9 0.9 0.3 0.04
49 51 64 0.6 72 2.3 0.9 0.5 0.128
49 – 71 0.6 – – – – 0.171
50 52.5 70 1 83 3.8 1.7 0.5 0.237
51.5 55.5 78.5 1 93 4.6 1.7 0.5 0.398
53 61.5 92 1.5 108 5.4 2.5 0.5 0.814
52 54 63 0.3 68.5 1.9 0.9 0.3 0.052
54 55.5 68 0.6 76 2.3 0.9 0.5 0.132
54 – 76 0.6 – – – – 0.18
55 57.5 75 1 88 3.8 1.7 0.5 0.261
56.5 60 83.5 1 98 5.4 2.5 0.5 0.454
59 68.5 101 2 118 5.4 2.5 0.5 1.07
57 59 70 0.3 76 2.3 0.9 0.3 0.083
60 61.5 75 1 86 2.9 1.2 0.5 0.18
59 – 86 0.6 – – – – 0.258
61.5 64 83.5 1 98 5 2.5 0.5 0.388
63 67 92 1.5 108 5.4 2.5 0.5 0.601
64 74 111 2 131.5 6.5 2.9 0.5 1.37
62 64.5 76 0.3 87 2.5 1.2 0.3 0.106
65 66.5 80 1 91 2.9 1.2 0.5 0.193
64 – 91 0.6 – – – – 0.283
66.5 69 88.5 1 103 5 2.5 0.5 0.414
68 75 102 1.5 118 5.4 2.5 0.5 0.783
71 80.5 119 2 141.5 6.5 2.9 0.5 1.73
76 – 129 2 – – – – 2.08
81 – 139 2 – – – – 2.52

  FACTORY DETAILED PROCESSING PHOTOS

HIGH QUALITY CONTROL SYSTEM


FAQ

1. Why choose CZPT China?

Over the past 17 years, CZPT has always insisted that “products and services” start from Japanese industry standards,taking ZheJiang standards as the bottom line, actively invest in the development of new transmission components and self-experiment and test. With the service tenet of “exceeding customer expectations”, establish a “trusted” partnership.

2. What is your main products ?

We are a leading manufacturer and distributor of linear motion components in China. Especially miniature size of Ball Screws and Linear Actuators and linear motion guideways. Our brand “KGG” stands for ” Know-how,” ” Great Quality,” and ” Good value” and our factory is located in the most advanced city in China: ZheJiang with the best equipment and sophisticated technology, completely strict quality control system. Our aim is to supply world leader class linear motion components but with most reasonable price in the world.

3. How to Custom-made (OEM/ODM)?

If you have a product drawing or a sample, please send to us, and we can custom-made the as your required. We will also provide our professional advices of the products to make the design to be more realized & maximize the performance.

4. When can I get the quotation?

We usually quote within 24 hours after we get your inquiry. If you are very urgent to get the price,please call us or tell us in your email so that we will regard your inquiry priority.

5. How can I get a sample to check the quality?

After confirmation of our quoted price, you can place the sample order. The sample will be started after you sign back our detailed technical file.

6. What’s your payment terms?

Our payment terms is 30% deposit,balance 70% before shipment. /* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Inner Diameter: 40mm
Outer Diameter: 62mm
Width: 12mm
Weight: 0.11kg
Aligning: Aligning Bearing
Separated: Unseparated
Customization:
Available

|

Customized Request

ball bearing

What are the Common Signs of Wear or Damage in Ball Bearings that Indicate the Need for Replacement?

Ball bearings are subjected to wear and stress during operation, and over time, they may exhibit signs of damage or deterioration that warrant replacement. Recognizing these signs is crucial to prevent catastrophic failure and ensure safe and reliable operation. Here are the common signs of wear or damage in ball bearings:

  • Unusual Noise:

If you hear unusual grinding, clicking, or rumbling noises coming from the bearing during operation, it may indicate worn-out or damaged components. Unusual noise suggests that the bearing is no longer operating smoothly.

  • Vibration:

Excessive vibration in the machinery can be a sign of bearing wear. Vibrations can result from uneven wear, misalignment, or damaged components within the bearing.

  • Increased Temperature:

Higher operating temperatures than usual may indicate increased friction due to inadequate lubrication, wear, or other issues. Monitoring the bearing’s temperature can help identify potential problems.

  • Irregular Movement:

If you notice irregular movement, jerking, or sticking during rotation, it could be a sign that the bearing is no longer operating smoothly. This may be due to damaged rolling elements or raceways.

  • Reduced Performance:

If the machinery’s performance has decreased, it may be due to a compromised bearing. Reduced efficiency, increased energy consumption, or a decline in overall performance could be indicators of bearing wear.

  • Visible Wear or Damage:

Inspect the bearing for visible signs of wear, such as pitting, scoring, or discoloration on the rolling elements or raceways. Severe wear or damage is a clear indication that the bearing needs replacement.

  • Leakage or Contamination:

If there is evidence of lubricant leakage, contamination, or the presence of foreign particles around the bearing, it suggests that the seal or shield may be compromised, leading to potential damage.

  • Looseness or Excessive Play:

If you can feel excessive play or looseness when manually moving the bearing, it could indicate worn-out components or misalignment.

  • Reduced Lifespan:

If the bearing’s expected lifespan is significantly shorter than usual, it may be due to inadequate lubrication, excessive loads, or improper installation, leading to accelerated wear.

  • Frequent Failures:

If the bearing is consistently failing despite regular maintenance and proper use, it could indicate a chronic issue that requires addressing, such as inadequate lubrication or misalignment.

It’s important to conduct regular inspections, monitor performance, and address any signs of wear or damage promptly. Replacing worn or damaged ball bearings in a timely manner can prevent further damage to machinery, reduce downtime, and ensure safe and efficient operation.

ball bearing

What Precautions should be taken to Prevent Contamination of Ball Bearings in Industrial Settings?

Preventing contamination of ball bearings is essential to ensure their proper function, longevity, and overall performance in industrial settings. Contaminants such as dust, dirt, debris, and particles can significantly impact bearing operation. Here are important precautions to take to prevent contamination of ball bearings:

  • Effective Sealing:

Choose ball bearings with appropriate seals or shields to prevent the ingress of contaminants. Seals provide a physical barrier against dust, moisture, and particles, ensuring the bearing’s interior remains clean.

  • Clean Environment:

Maintain a clean working environment around the machinery and equipment. Regularly clean the surrounding areas to prevent the accumulation of dirt and debris that could enter the bearings.

  • Proper Handling:

Handle bearings with clean hands and use gloves if necessary. Avoid touching the bearing surfaces with bare hands, as natural skin oils can transfer contaminants onto the bearing.

  • Clean Tools and Equipment:

Use clean tools and equipment during installation and maintenance to prevent introducing contaminants. Ensure that tools are properly cleaned before coming into contact with the bearing components.

  • Contamination-Controlled Workstations:

Establish contamination-controlled workstations for bearing handling, installation, and maintenance. These areas should have proper ventilation, filtered air, and minimal exposure to external contaminants.

  • Proper Lubrication:

Use the correct lubricant in appropriate quantities. Lubricants help create a barrier against contaminants and reduce friction. Regularly inspect and replenish lubrication to maintain its effectiveness.

  • Regular Inspections:

Implement a routine inspection schedule to monitor the condition of the bearings. Look for signs of contamination, wear, and damage. Address any issues promptly to prevent further damage.

  • Training and Education:

Train personnel on proper handling, installation, and maintenance practices to minimize the risk of contamination. Educated employees are more likely to take precautions and prevent accidental contamination.

  • Environmental Controls:

In sensitive environments, such as clean rooms or medical facilities, implement strict environmental controls to minimize the presence of contaminants that could affect bearing performance.

  • Regular Cleaning and Maintenance:

Perform regular cleaning and maintenance of machinery and equipment to prevent the buildup of contaminants. Keep bearings protected during maintenance to prevent debris from entering during the process.

  • Selection of Suitable Bearings:

Choose bearings that are specifically designed for the application’s environmental conditions. Some bearings have advanced sealing options or specialized coatings that enhance contamination resistance.

By implementing these precautions, industries can significantly reduce the risk of contamination in ball bearings, ensuring smooth operation, extended bearing life, and enhanced equipment reliability.

ball bearing

How do Ball Bearings Differ from Other Types of Bearings like Roller Bearings?

Ball bearings and roller bearings are two common types of rolling-element bearings, each with distinct designs and characteristics. Here’s a comparison of ball bearings and roller bearings:

  • Design:

Ball Bearings: Ball bearings use spherical balls to separate and reduce friction between the bearing’s inner and outer rings. The balls enable rolling motion and smooth contact, minimizing friction.

Roller Bearings: Roller bearings, as the name suggests, use cylindrical or tapered rollers instead of balls. These rollers have larger contact areas, distributing loads over a broader surface.

  • Friction and Efficiency:

Ball Bearings: Due to the point contact between the balls and the rings, ball bearings have lower friction and are more efficient at high speeds.

Roller Bearings: Roller bearings have a larger contact area, resulting in slightly higher friction compared to ball bearings. They are more suitable for heavy-load applications where efficiency is prioritized over high speeds.

  • Load Capacity:

Ball Bearings: Ball bearings excel at handling light to moderate loads in both radial and axial directions. They are commonly used in applications where smooth rotation and low friction are important.

Roller Bearings: Roller bearings have a higher load-carrying capacity than ball bearings. They can support heavier radial and axial loads and are preferred for applications with significant loads or impact forces.

  • Variability:

Ball Bearings: Ball bearings come in various designs, including deep groove, angular contact, and thrust ball bearings, each suitable for different applications.

Roller Bearings: Roller bearings have diverse types, including cylindrical, spherical, tapered, and needle roller bearings, each optimized for specific load and motion requirements.

  • Speed Capability:

Ball Bearings: The reduced friction in ball bearings makes them suitable for high-speed applications, such as electric motors and precision machinery.

Roller Bearings: Roller bearings can handle higher loads but are generally better suited for moderate to low speeds due to slightly higher friction.

  • Applications:

Ball Bearings: Ball bearings are used in applications where smooth motion, low friction, and moderate loads are essential, such as electric fans, bicycles, and some automotive components.

Roller Bearings: Roller bearings find applications in heavy machinery, construction equipment, automotive transmissions, and conveyor systems, where heavier loads and durability are crucial.

In summary, ball bearings and roller bearings differ in their design, friction characteristics, load capacities, speed capabilities, and applications. The choice between them depends on the specific requirements of the machinery and the type of loads and forces involved.

China Best Sales CZPT High Quality Radial Ball Bearing Deep Groove Ball Bearing 6908 Series drive shaft bearingChina Best Sales CZPT High Quality Radial Ball Bearing Deep Groove Ball Bearing 6908 Series drive shaft bearing
editor by CX 2024-03-07

China manufacturer High Rpm Cheap Factory Direct Selling Inch Size Auto Parts High Quality Long Life Deep Groove Ball Bearing 6006-2RS 6903 6904 6905 6906 6907 6908 supplier

Product Description

Product Description

 

Packaging & Shipping

 

Company Profile

 

Our Advantages

 

FAQ

 

Basic Info. 

Rows Number Single Load Direction Radial Bearing
Material Bearing Steel Precision Rating PO P6 P5 P4 P2
Clearance CO C1 C2 C3 C4 Lubrication Oil Lubrication
OEM Available Hardness 59-63HRC
Feature High Speed,Long Life Transport Package Single Box
Specification standard Trademark Packing
Production Capacity 1500,000 Pieces/Year    

Product Decription

The outer spherical ball bearing is actually a variant of the deep groove ball bearing. Its characteristic is that its outer ring outer diameter surface is a spherical surface, which can be fitted into the corresponding concave spherical surface of the bearing seat to play the role of centering. The outer spherical bearing is mainly used to bear the combined radial and axial load based on the radial load, and it is generally not suitable to bear the axial load alone.
Product  Series

UC200 series 
Bearing type Dimensions(mm) Weight(KG) basic load capacity(KN) Limt speed(r/min)
d D B C S G H ds   dynamic static  
UC201 12 40 27.4 14 11.5 4.5 4 M*0.75 0.12 7.36 4.48 4000
UC202 15 40 27.4 14 11.5 4.5 4 M*0.75 0.11 7.36 4.48 4000
UC203 17 40 27.4 14 11.5 4.5 4 M*0.75 0.1 7.36 4.48 4000
UC204 20 47 31 17 12.7 4.7 4.5 M6*1.0 0.16 9.88 6.2 4000
UC205 25 52 34.1 17 14.3 5.5 4.7 M6*1.0 0.19 10.78 6.98 3400
UC206 30 62 38.1 19 15.9 6 4.5 M6*1.0 0.31 14.97 10.04 2800
UC207 35 72 42.9 20 17.5 6.5 5.1 M8*1.0 0.48 19.75 13.67 2400
UC208 40 80 49.2 21 19 8 5.8 M8*1.0 0.62 22.71 15.94 2200
UC209 45 85 49.2 22 19 8 6.2 M8*1.0 0.67 24.36 17.71 1900
UC210 50 90 51.6 23 19 9 6.5 M10*1.0 0.78 26.98 19.84 1800
UC211 55 100 55.6 25 22.2 9 7.3 M10*1.0 1.03 33.37 25.11 1600
UC212 60 110 65.1 27 25.4 11 7.7 M10*1.0 1.45 36.74 27.97 1500
UC213 65 120 65.1 28 25.4 12 8.3 M10*1.0 1.71 44.01 34.18 1400
UC214 70 125 74.6 30 30.2 12 8.7 M12*1.25 2.06 46.79 37.59 1300
UC215 75 130 77.8 30 33.3 12 9.2 M12*1.25 2.22 50.85 41.26 1200
UC216 80 140 82.6 33 33.3 14 9.6 M12*1.25 2.8 55.04 45.09 1100
UC217 85 150 85.7 36 34.1 14 10.5 M12*1.25 3.48 64.01 53.28 1000
UC218 90 160 96 37 39.7 14 11.1 M12*1.25 4.3 73.83 60.76 950
                         
UC 300series
Bearing type Dimensions(mm) Weight(KG) basic load capacity(KN) Limt speed(r/min)
d D B C S G H ds   dynamic static  
UC305 25 62 38 21 15 6 6.1 M6*1 0.35 17.22 11.39 2800
UC306 30 72 43 23 17 6 6.7 M8*1 0.56 20.77 14.17 2600
UC307 35 80 48 25 19 8 7.4 M8*1 0.71 25.66 17.92 2200
UC308 40 90 52 27 22 10 8.2 M10*1 0.96 31.35 22.38 2000
UC309 45 100 57 30 22 10 9 M10*1 1.28 40.66 30 1800
UC310 50 110 61 32 25 12 10 M12*1.25 1.65 47.58 35.71 1700
UC311 55 120 66 34 26 12 10.7 M12*1.25 1.9 55.05 41.91 1400
UC312 60 130 71 36 30 12 11.5 M12*1.25 2.6 62.88 48.6 1300
UC313 65 140 75 38 33 12 12.2 M12*1.25 3.15 72.21 56.68 1200
UC314 70 150 78 40 33 14 13 M12*1.25 3.83 80.1 63.48 1100
UC315 75 160 82 42 33 14 13.8 M14*1.5 4.59 87.25 71.68 1000
UC316 80 170 86 44 34 14 14.5 M16*1.5 5.3 94.57 80.35 1000
UC317 85 180 96 46 40 16 15 M16*1.5 6.58 102.25 89.52 9050
UC318 90 190 96 48 40 16 15.9 M16*1.5 7.5 110.81 100.76 900
UC319 95 200 103 50 41 16 16.7 M16*1.5 8.7 120.51 113.75 850
UC320 100 215 108 54 42 18 18 M16*1.5 10.8 133.06 131.18 800

Deep groove ball bearing 
Bearing type Dimensions(mm) Weight(kg)
Inner diameter Outer diameter breadth
16001 12 28 7 0.019
16002 15 32 8 0.571
16003 17 35 8 0.033
16004 20 42 8 0.048
16005 25 47 8 0.059
16006 30 55 9 0.087
16007 35 62 99 0.107
16008 40 68 10 0.13
16009 45 75 10 0.167
16571 50 80 11 0.175
16011 55 90 11 0.257
16012 60 95 11 0.281
16013 65 100 13 0.3
16014 70 110 13 0.437
16015 75 115 14 0.463
16016 80 125 14 0.621
16017 85 130 16 0.652
16018 90 140 16 0.87
16019 95 145 16 0.904
Bearing type Dimensions(mm) Weight(kg)
Inner diameter Outer diameter breadth
16571 100 150 8 0.945
6000 10 26 8 0.018
6001 12 28 9 0.571
6002 15 32 10 0.031
6003 17 35 12 0.041
6004 20 42 12 0.068
6005 25 47 13 0.079
6006 30 55 14 0.116
6007 35 62 15 0.151
6008 40 68 16 0.19
6009 45 75 16 0.241
6571 50 80 18 0.261
6011 55 90 18 0.381
6012 60 95 18 0.412
6013 65 100 20 0.439
6014 70 110 20 0.608
6015 75 115 22 0.649
6016 80 125 22 0.872
6017 85 130 24 0.918
6018 90 140 24 1.19

More series of deep groove ball bearing
6300 series deep groove ball bearing
6220 series deep groove ball bearing

Production Process
Production Process

Inspection
Our Advantage

Package and shipment

Company Profile

HangZhou Siruibo Bearing Technology Co., Ltd. is a company mainly engaged in manufacturing and selling outer spherical bearings. The registered capital is Five million.

Since its establishment 20 years ago, the company is committed to Mounted Bearing Unit (maintenance-free bearings, engraving machine bearings, holding machine shaft Bearing, no-tillage machine bearing, fan bearing, high temperature bearing, zinc alloy bearing, food grade bearing unit) research and development. With the most complete varieties and best advanced manufacturing technology in production of Mounted Bearing Unit, to be a reliable enterprises, we welcome your cooperation.  Currently, our company produce 10 series of more than 260 varieties of outer spherical bearings and 13 different structural categories of outer spherical bearing special seats, all adopted  International standard design and manufacturing. Registered trademark “FOS” .

Through the efforts and unremitting pursuit of all employees of the company, all products accepted by international standards. Over the years of Expansion and technical transformation, we developed into a Mounted Bearing Unit with large scale of professional manufacturers, for the bearing industry in China, has made a contribution to the development of Bearing.

HangZhou Siruibo Bearing Technology Co., Ltd. has a production capacity of 1 million sets/year, with an annual output value of 30 million yuan. We produce 30 varieties monthly , with 45-60 days lead time.

The company has a perfect material and product quality inspection equipment, according to the strict scientific Quality assurance system,  to prove satisfactory to our customers.  Our products widely used in agricultural Industry machinery, textile machinery and light industry, chemical industry, metallurgy, printing, food, transportation, coal, packaging and other industries and the introduction of machinery .Our products have exported to Europe, America and many countries and regions in South east Asia.

Exhibitions

About us:
We are 1 manufactuer of bearing for more than 20 years.
Give us a chance, we will cooperate with our passion.
Our professional, reliable, experienced  products and service can meet your request.
Why choose us? 

SAMPLES
1. Samples quantity: 1-10 PCS are available. 
2. Free samples: It depends on the Model No., material and quantity. Some of the bearings samples need client to pay samples charge and shipping cost. 
3. It’s better to start your order with Trade Assurance to get full protection for your samples order. 

CUSTOMIZED
The customized LOGO or drawing is acceptable for us. 

MOQ
1. MOQ: 10 PCS mix different standard bearings. 
2. MOQ: 3000 PCS customized your brand bearings. 

OEM POLICY
1. We can printing your brand (logo, artwork)on the shield or laser engraving your brand on the shield. 
2. We can custom your packaging according to your design
3. All copyright own by clients and we promised don’t disclose any info. 

SUPPORT
Please visit our bearings website, we strongly encourge that you can communicate with us through email, thanks! 
We have all kinds of bearings, just tell me your item number and quantity, best price will be offered to you soon
The material of the bearings, precision rating, seals type, OEM service, etc, all of them we can make according to your requirement. 
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Rolling Body: Ball Bearings
The Number of Rows: Single
Outer Dimension: Small (28-55mm)
Material: Bearing Steel
Spherical: Non-Aligning Bearings
Load Direction: Radial Bearing
Samples:
US$ 1/Piece
1 Piece(Min.Order)

|
Request Sample

Customization:
Available

|

Customized Request

ball bearing

What are the Materials Typically Used in Manufacturing Ball Bearings and Their Advantages?

Ball bearings are manufactured using a variety of materials, each chosen for its specific properties and advantages in various applications. Here are some commonly used materials in ball bearing manufacturing and their respective benefits:

  • High-Carbon Chrome Steel (AISI 52100):

This is the most common material used for ball bearing manufacturing. It offers excellent hardness, wear resistance, and fatigue strength. High-carbon chrome steel bearings are suitable for a wide range of applications, from industrial machinery to automotive components.

  • Stainless Steel (AISI 440C, AISI 304, AISI 316):

Stainless steel bearings are corrosion-resistant and suitable for applications where moisture, chemicals, or exposure to harsh environments are concerns. AISI 440C offers high hardness and corrosion resistance, while AISI 304 and AISI 316 provide good corrosion resistance and are often used in food and medical industries.

  • Ceramic:

Ceramic bearings use silicon nitride (Si3N4) or zirconia (ZrO2) balls. Ceramic materials offer high stiffness, low density, and excellent resistance to corrosion and heat. Ceramic bearings are commonly used in high-speed and high-temperature applications, such as in aerospace and racing industries.

  • Plastic (Polyamide, PEEK):

Plastic bearings are lightweight and offer good corrosion resistance. Polyamide bearings are commonly used due to their low friction and wear properties. Polyether ether ketone (PEEK) bearings provide high-temperature resistance and are suitable for demanding environments.

  • Bronze:

Bronze bearings are often used in applications where self-lubrication is required. Bronze has good thermal conductivity and wear resistance. Bearings made from bronze are commonly used in machinery requiring frequent starts and stops.

  • Hybrid Bearings:

Hybrid bearings combine steel rings with ceramic balls. These bearings offer a balance between the advantages of both materials, such as improved stiffness and reduced weight. Hybrid bearings are used in applications where high speeds and low friction are essential.

  • Specialty Alloys:

For specific applications, specialty alloys may be used to meet unique requirements. For example, bearings used in extreme temperatures or corrosive environments may be made from materials like titanium or hastelloy.

  • Coated Bearings:

Bearings may also be coated with thin layers of materials like diamond-like carbon (DLC) or other coatings to enhance performance, reduce friction, and improve wear resistance.

The choice of material depends on factors such as application requirements, operating conditions, load, speed, and environmental factors. Selecting the right material is essential for ensuring optimal bearing performance, longevity, and reliability in diverse industries and applications.

ball bearing

How do Ceramic Ball Bearings Compare to Traditional Steel Ball Bearings in Terms of Performance?

Ceramic ball bearings and traditional steel ball bearings have distinct characteristics that can impact their performance in various applications. Here’s a comparison of how these two types of bearings differ in terms of performance:

  • Material Composition:

Ceramic Ball Bearings:

Ceramic ball bearings use ceramic rolling elements, typically made from materials like silicon nitride (Si3N4) or zirconium dioxide (ZrO2). These ceramics are known for their high hardness, low density, and resistance to corrosion and wear.

Traditional Steel Ball Bearings:

Traditional steel ball bearings use steel rolling elements. The type of steel used can vary, but common materials include chrome steel (52100) and stainless steel (440C). Steel bearings are known for their durability and strength.

  • Friction and Heat:

Ceramic Ball Bearings:

Ceramic bearings have lower friction coefficients compared to steel bearings. This results in reduced heat generation during operation, contributing to higher efficiency and potential energy savings.

Traditional Steel Ball Bearings:

Steel bearings can generate more heat due to higher friction coefficients. This can lead to increased energy consumption in applications where efficiency is crucial.

  • Weight:

Ceramic Ball Bearings:

Ceramic bearings are lighter than steel bearings due to the lower density of ceramics. This weight reduction can be advantageous in applications where minimizing weight is important.

Traditional Steel Ball Bearings:

Steel bearings are heavier than ceramic bearings due to the higher density of steel. This weight may not be as critical in all applications but could impact overall equipment weight and portability.

  • Corrosion Resistance:

Ceramic Ball Bearings:

Ceramic bearings have excellent corrosion resistance, making them suitable for applications in corrosive environments, such as marine or chemical industries.

Traditional Steel Ball Bearings:

Steel bearings are susceptible to corrosion, especially in harsh environments. Stainless steel variants offer improved corrosion resistance but may still corrode over time.

  • Speed and Precision:

Ceramic Ball Bearings:

Ceramic bearings can operate at higher speeds due to their lower friction and ability to withstand higher temperatures. They are also known for their high precision and low levels of thermal expansion.

Traditional Steel Ball Bearings:

Steel bearings can operate at high speeds as well, but their heat generation may limit performance in certain applications. Precision steel bearings are also available but may have slightly different characteristics compared to ceramics.

  • Cost:

Ceramic Ball Bearings:

Ceramic bearings are generally more expensive to manufacture than steel bearings due to the cost of ceramic materials and the challenges in producing precision ceramic components.

Traditional Steel Ball Bearings:

Steel bearings are often more cost-effective to manufacture, making them a more economical choice for many applications.

In conclusion, ceramic ball bearings and traditional steel ball bearings offer different performance characteristics. Ceramic bearings excel in terms of low friction, heat generation, corrosion resistance, and weight reduction. Steel bearings are durable, cost-effective, and widely used in various applications. The choice between the two depends on the specific requirements of the application, such as speed, precision, corrosion resistance, and budget considerations.

ball bearing

What are the Different Components that Make up a Typical Ball Bearing?

A typical ball bearing consists of several essential components that work together to reduce friction and support loads. Here are the main components that make up a ball bearing:

  • Outer Ring:

The outer ring is the stationary part of the bearing that provides support and houses the other components. It contains raceways (grooves) that guide the balls’ movement.

  • Inner Ring:

The inner ring is the rotating part of the bearing that attaches to the shaft. It also contains raceways that correspond to those on the outer ring, allowing the balls to roll smoothly.

  • Balls:

The spherical balls are the rolling elements that reduce friction between the inner and outer rings. Their smooth rolling motion enables efficient movement and load distribution.

  • Cage or Retainer:

The cage, also known as the retainer, maintains a consistent spacing between the balls. It prevents the balls from touching each other, reducing friction and preventing jamming.

  • Seals and Shields:

Many ball bearings include seals or shields to protect the internal components from contaminants and retain lubrication. Seals provide better protection against contaminants, while shields offer less resistance to rotation.

  • Lubricant:

Lubrication is essential to reduce friction, wear, and heat generation. Bearings are typically filled with lubricants that ensure smooth movement between the balls and raceways.

  • Flanges and Snap Rings:

In some designs, flanges or snap rings are added to help position and secure the bearing in its housing or on the shaft. Flanges prevent axial movement, while snap rings secure the bearing radially.

  • Raceways:

Raceways are the grooved tracks on the inner and outer rings where the balls roll. The shape and design of the raceways influence the bearing’s load-carrying capacity and performance.

  • Anti-Friction Shield:

In certain high-speed applications, a thin anti-friction shield can be placed between the inner and outer rings to minimize friction and heat generation.

These components work together to enable the smooth rolling motion, load support, and reduced friction that characterize ball bearings. The proper design and assembly of these components ensure the bearing’s optimal performance and longevity in various applications.

China manufacturer High Rpm Cheap Factory Direct Selling Inch Size Auto Parts High Quality Long Life Deep Groove Ball Bearing 6006-2RS 6903 6904 6905 6906 6907 6908 supplierChina manufacturer High Rpm Cheap Factory Direct Selling Inch Size Auto Parts High Quality Long Life Deep Groove Ball Bearing 6006-2RS 6903 6904 6905 6906 6907 6908 supplier
editor by CX 2024-01-11