Jiashan Bangsheng Bearing Co., Ltd.
Add：No. 38, Jinjia Avenue, Jiashan County, Zhejiang Province
Tel：86-573-84252262
Fax：86-573-84252262
Mob：15067330806 13957343967
Url：www.jsbszc.com
Product
Sf-1b copper base oil free bearing
Description
,
1. A mixture of modified polytetrafluoroethylene (PTFE) and lead (Pb) 0.01-0.03mm, a wear-resistant material. A transfer film can be formed during operation to protect the shaft. 2. Copper powder layer, 0.20-0.3mm, improve the bonding strength of PTFE / Pb and copper plate layer, with good load-carrying capacity and wear resistance. Higher thermal conductivity can quickly transfer heat generated during operation. 3. Copper substrate 0.7 ~ 2.3, improve bearing capacity and heat transfer, and have better corrosion resistance.
TECHNICAL DATE
Dead load
250N/mm2
friction coefficient
0.03~0.20
Maximum load
Low speed operation
140N/mm2
Maximum linear speed
dry friction
2m/s
Rotation and swing
60N/mm2
Fluid lubrication
5m/s
Maximum PV value
(dry friction)
Intermittent operation
3.6N/mm2.m/s
Thermal conductivity
42W(m.K)-1
Long term operation
1.8N/mm2.m/s
Coefficient of linear expansion
11x11-6K
Service temperature
-195℃~＋280℃
APPLICATION CHARACTER
In addition to the same advantages as SF-1, it also has the following characteristics: Because copper itself has its own self-lubricating properties, it can be used in parts that require long-term work and cannot be stopped for maintenance, and has better corrosion resistance than SF-1. Widely used in weak acid and alkali applications, port machinery, ship machinery, metallurgical steel industry, continuous caster billet raceway, high temperature furnace steel ring parts, cement grout pump and screw conveyor It can be combined with a steel sleeve on the outside or made into a flanging, and the end face and the inner hole can be rubbed at the same time.
Sf-1b standard tolerance dimension table
Matching shaft diameter tolerance
Matching seat hole tolerance (H7 )
Bearing outer diameter tolerance
Tolerance of inner diameter of bearing after pressing into seat hole
Wall thick- ness
f1
f2
L0-0.40
(d≤φ30 L -0.3 d＞φ30 L -0.4)
6
8
10
12
15
20
25
30
40
50
60
6 -0.013 -0.028
8 +0.015
8 +0.055 +0.025
5.990 6.055
0.980 1.005
0.6
0.3
0606
0608
0610
8 -0.013 -0.028
10 +0.015
10 +0.055 +0.025
7.990 8.055
0806
0808
0810
08012
08015
10 -0.016 -0.034
12 +0.018
12 +0.065 +0.030
9.990 10.058
1006
1008
1010
1012
1015
1020
12 -0.016 -0.034
14 +0.018
14 +0.065 +0.030
11.990 12.058
1206
1208
1210
1212
1215
1220
1225
13 -0.016 -0.034
15 +0.018
15 +0.065 +0.030
12.990 13.058
1310
1320
14 -0.016 -0.034
16 +0.018
16+0.065 +0.030
13.990 14.058
1410
1412
1415
1420
1425
15 -0.016 -0.034
17 +0.018
17+0.065 +0.030
14.990 15.058
1510
1512
1515
1520
1525
16 -0.016 -0.034
18 +0.018
18 +0.065 +0.030
15.990 16.058
1610
1612
1615
1620
1625
17 -0.016 -0.034
19 +0.021
19 +0.075 +0.035
16.990 17.061
1710
1712
1720
18 -0.016 -0.034
20 +0.021
20 +0.075 +0.035
17.990 18.061
1810
1812
1815
1820
1825
20 -0.020 -0.041
23 +0.021
23 +0.075 +0.035
19.990 20.071
1.475 1.505
0.6
0.4
2010
2012
2015
2020
2025
2030
22 -0.020 -0.041
25 +0.021
25 +0.075 +0.035
21.990 22.071
2210
2212
2215
2220
2225
2230
24 -0.020 -0.041
27 +0.021
27 +0.075 +0.035
23.990 24.071
2415
2420
2425
2430
25 -0.020 -0.041
28 +0.021
28 +0.075 +0.035
24.990 25.071
2510
2512
2515
2520
2525
2530
2540
2550
28 -0.020 -0.041
32 +0.025
32 +0.085 +0.045
27.990 28.085
1.970 2.005
1.2
0.4
2815
2820
2825
2830
2840
30 -0.020 -0.041
34 +0.025
34 +0.085 +0.045
29.990 30.285
3012
3015
3020
3025
3030
3040
32 -0.025 -0.050
36 +0.025
36 +0.085 +0.045
31.990 32.085
3220
3230
3240
35 -0.025 -0.050
39 +0.025
39 +0.085 +0.045
34.990 35.085
3512
3515
3520
3525
3530
3540
3550
38 -0.025 -0.050
42 +0.025
42 +0.085 +0.045
37.990 38.085
3815
3830
3840
40 -0.025 -0.050
44 +0.025
44 +0.085 +0.045
39.990 40.085
4012
4020
4025
4030
4040
4050
, ,
Matching shaft diameter tolerance
Matching seat hole tolerance (H7 )
Bearing outer diameter tolerance
Tolerance of inner diameter of bearing after pressing into seat hole
