| SF-1B copper based oil-free bearing
|
| Material Structure |
|
 |
A mixture of modified polytetrafluoroethylene (PTFE) and lead (Pb) with a thickness of 0.01-0.03mm is a wear-resistant material that can form a transfer film during operation to protect the grinding shaft.
2. Copper powder layer, 0.20-0.3mm, improves the bonding strength between PTFE/Pb and copper plate layer, with good load-bearing capacity and wear resistance. A higher thermal conductivity can quickly transfer the heat generated during operation.
3. Copper substrate with a range of 0.7~2.3 improves the bearing's load-bearing capacity and heat transfer, and has better corrosion resistance. |
| Main parameters Technical Date |
| | Static bearing capacity | 250N/mm2 | | coefficient of friction | 0.03~0.20 | | Maximum Load | Low speed operation | 140N/mm2 | | Maximum linear speed | dry friction | 2m/s | | | Rotating and swinging motion | 60N/mm2 | | | fluid lubrication | 5m/s | Maximum PV value
(Dry friction) | Intermittent operation | 3.6N/mm2.m/s | | thermal conductivity | 70W(m.K)-1 | | | Long term operation | 1.8N/mm2.m/s | | linear expansion coefficient | 17x11-6K | | Usage temperature | -195℃~＋300℃ | | | |
|
| Application Features Application CHARACTER |
In addition to the same advantages as SF-1, it also has the following characteristics:
Due to its self-lubricating properties, copper can be used for parts that require long-term operation and cannot be stopped for maintenance, and has better corrosion resistance than SF-1. Widely used in weak acid and strong alkali applications, port machinery, ship machinery, metallurgical steel industry, continuous casting machine billet raceway, high-temperature furnace steel ring parts, cement grouting pumps, and screw conveyors. It can be combined with a steel sleeve on the outside, or made into a flange, with the end face and inner hole rubbed together for use. |  |
| |
SF-1B Standard Tolerance Dimensional Table |
 |
 |
Unit: mm
| Matching shaft diameter tolerance |
Matching seat hole tolerance
(H7) |
Bearing outer diameter tolerance |
Bearing inner diameter tolerance after pressing into the seat hole |
wall thickness |
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 |
Bearing inner diameter tolerance after pressing into the seat hole |
Wall thickness |
f1 |
f2 |
L0-0.40 |
| 20 |
25 |
30 |
40 |
50 |
60 |
70 |
80 |
100 |
115 |
45 -0.025
-0.050
|
50 +0.025
|
50 +0.085
+0.045
|
44.990
45.105 |
2.460
2.505 |
1.8 |
0.6 |
4520 |
4525 |
4530 |
4540 |
4550 |
|
|
|
|
|
50 -0.025
-0.050
|
55 +0.030
|
55 +0.100
+0.055
|
49.990
50.110 |
5020 |
|
5030 |
5040 |
5050 |
5060 |
|
|
|
|
55 -0.030
-0.060
|
60 +0.030
|
60 +0.100
+0.055
|
54.990
55.110 |
|
|
5530 |
5540 |
5550 |
5560 |
|
|
|
|
60 -0.030
-0.060
|
65 +0.030
|
65 +0.100
+0.055
|
59.990
60.110 |
|
|
6030 |
6040 |
6050 |
6060 |
6070 |
|
|
|
65 -0.030
-0.060
|
70 +0.030
|
70 +0.100
+0.055
|
64.990
65.110 |
|
|
6530 |
6540 |
6550 |
6560 |
6570 |
|
|
|
70 -0.030
-0.060
|
75 +0.030
|
75 +0.100
+0.055
|
69.990
70.110 |
|
|
|
7040 |
7050 |
7060 |
7070 |
7080 |
|
|
75 -0.030
-0.060
|
80 +0.030
|
80 +0.100
+0.055
|
74.990
75.110 |
|
|
7530 |
7540 |
7550 |
7560 |
7570 |
7580 |
|
|
80 -0.030
|
85 +0.035
|
85 +0.120
+0.070
|
80.020
80.155 |
2.440
2.490 |
1.8 |
0.6 |
|
|
|
8040 |
8050 |
8060 |
8070 |
8080 |
80100 |
|
| 85 -0.035
|
90 +0.035
|
90 +0.120
+0.070
|
85.020
85.155 |
|
|
|
8540 |
|
8560 |
|
8580 |
85100 |
|
| 90 -0.035
|
95 +0.035
|
95 +0.120
+0.070
|
90.020
90.155 |
|
|
|
9040 |
9050 |
9060 |
|
9080 |
90100 |
|
| 95 -0.035
|
100 +0.035
|
100 +0.120
+0.070
|
95.020
95.155 |
|
|
|
|
9550 |
9560 |
|
9580 |
95100 |
|
| 100 -0.035
|
105 +0.035
|
105 +0.120
+0.070
|
100.020
100.155
|
|
|
|
|
10050 |
10060 |
|
10080 |
|
100115 |
| 105 -0.035
|
110 +0.035
|
110 +0.120
+0.070
|
105.020
105.155 |
|
|
|
|
|
10560 |
|
10580 |
|
105115 |
| 110 -0.035
|
115 +0.035
|
115 +0.120
+0.070
|
110.020
110.155 |
|
|
|
|
|
11060 |
|
11080 |
|
110115 |
| 120 -0.035
|
125 +0.040
|
125 +0.170
+0.100
|
120.070
120.210 |
2.415
2.465 |
1.8 |
0.6 |
|
|
|
|
|
12060 |
|
12080 |
112100 |
|
| 125 -0.040
|
130 +0.040
|
130 +0.170
+0.100
|
125.070
125.210 |
|
|
|
|
|
12560 |
|
|
125100 |
125115 |
| 130 -0.040
|
135 +0.040
|
135 +0.170
+0.100
|
130.070
130.210 |
|
|
|
|
|
13060 |
|
13080 |
130100 |
|
| 140 -0.040
|
145 +0.040
|
145 +0.170
+0.100
|
140.070
140.210 |
|
|
|
|
|
14060 |
|
14080 |
140100 |
|
| 150 -0.040
|
155 +0.040
|
155 +0.170
+0.100
|
150.070
150.210 |
|
|
|
|
|
15060 |
|
15080 |
150100 |
|
| 160 -0.040
|
165 +0.040
|
165 +0.170
+0.100
|
160.070
160.210 |
|
|
|
|
|
16060 |
|
16080 |
160100 |
160115 |
| 180 -0.040
|
185 +0.046
|
185 +0.210
+0.130
|
180.070
180.216 |
|
|
|
|
|
|
|
|
|
|
18080 |
180100 |
|
| 190 -0.046
|
195 +0.046
|
195 +0.210
+0.130
|
190.070
190.216 |
|
|
|
|
|
|
|
19080 |
190100 |
|
| 200 -0.046
|
205 +0.046
|
205 +0.210
+0.130
|
200.070
200.216 |
|
|
|
|
|
20060 |
|
20080 |
200100 |
|
| 220 -0.046
|
225 +0.046
|
225 +0.210
+0.130
|
220.070
220.216
|
|
|
|
|
|
|
|
22080 |
220100 |
|
| 250 -0.046
|
255 +0.052
|
255 +0.260
+0.170
|
250.070
250.222
|
|
|
|
|
|
|
|
25080 |
250100 |
|
| 260 -0.052
|
265 +0.052
|
265 +0.260
+0.170
|
260.070
260.222 |
|
|
|
|
|
|
|
26080 |
260100 |
|
| 280 -0.052
|
285 +0.052
|
285 +0.260
+0.170
|
280.070
280.222
|
|
|
|
|
|
|
|
28080 |
280100 |
|
| 300 -0.052
|
305 +0.052
|
305 +0.260
+0.170
|
300.070
300.222
|
|
|
|
|
|
|
|
30080 |
300100 |
| |
|
|
