 |
1、Polytetrafluoroethylene and lipophilic fiber mixture 0.01-0.03mm
2、Stainless steel back 0.7-2.3mm
3、Spherical bronze powder 0.2-0.3mm
4、Electroplated layer: 0.005mm thick tin plating layer, or 0.008mm thick copper plating layer | |
| Product description: |
| Sf-1d hydraulic special bearing is a new material designed on the basis of sf-1p in combination with the working principle of oil cylinder and shock absorber. It is more wear-resistant under the condition of no oil. In addition to the advantages of sf-1p, this product is especially suitable for the occasion of frequent reciprocating large lateral force. Its performance is similar to that of foreign DP4. At present, this product gradually replaces sf-1p product, and is suitable for automobile, motorcycle shock absorber and various hydraulic cylinders. Best for use. |
| Technical parameters: |
|
Maximum bearing pressure: 140N / mm2
Applicable temperature range: - 195 ~ + 280 ℃
Maximum sliding speed: 3m / S
Friction coefficient: 0.04 ~ 0.20
Allowable maximum PV value (dry): 3.8n/mm2.m/s
Allowable maximum PV value (oil): 50n / mm2. M / S |
| Application characteristics： |
|
1. The mixture of PTFE and lipophilic fiber can form a good transfer film to protect the grinding shaft.
2. Good wear resistance and low friction coefficient.
3. Good running in performance, no shaft undercut.
4. It can be used in rotation, swing and reciprocating motion.
5. Because it does not contain lead, it can be used in food machinery, medical machinery and other green environmental protection equipment.
6. In addition to the sf-1p features, the products are especially suitable for the occasions with frequent reciprocating motion and large lateral force, and are suitable for the fields of automobile, motorcycle shock absorbers and various hydraulic cylinders. |
| SF-1Dseries chemical properties |
| Bearing type |
In the air |
In vacuum |
In the water |
In steam |
Weak acid |
Medium acid |
Strong acid |
In alkaline solution |
| SF-1D |
good |
good |
good |
good |
difference |
no |
no |
good | |
| SF-1D End friction and wear test |
| Model |
Test time |
Test conditions |
friction coefficient |
Final temperature
(degree Celsius) |
Final wear(mm) |
| lubrication |
speed |
pressure |
| SF-1D |
3hr |
干 |
0.4m/s |
3.5N/mm2 |
0.175 |
98 |
0.012 |
| SF-1D |
3hr |
油 |
0.4m/s |
3.5N/mm2 |
0.054 |
46 |
0.004 | |
| SF-1D 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 |
Wall
thick-
ness |
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
|
| |
