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| JF Series |
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| JF-800 Bimetal bushing |
JF-720 Bimetal bushing |
JF-700 Bimetal bushing |
JF-20 High Tin and Aluminum Based Bush |
| Tpees for JF bush's grovves&indentations |
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| Lock types of JF wrapped bushes |
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| The designing of oil indentations |
In order to fully lubricate the bush when in the performance,the indentations with size as flows are recommended.They should be manufactured according to the standard below if withoutspecial requirements.
| Bush O.D |
From to |
14~22 |
22!44 |
40~50 |
50~100 |
100~180 |
| Lubricating Hole |
3 |
3 |
3 |
6 |
7 |
The lubricating hole should be away from butt joint and loading area and designed to by easy-oil feeding as well. |
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| Thickness of the JF double layer metal and their tolerances |
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| Nominal Thickness |
1 |
1.5 |
2 |
2.5 |
3 |
3.5 |
4 |
5 |
| Thickness of steel backing |
0.6 |
1 |
1.4 |
1.9 |
2.3 |
2.8 |
3.2 |
4 |
| Thickness of bronze layer |
0.4 |
0.5 |
0.6 |
0.6 |
0.7 |
0.7 |
0.8 |
1.0 |
| Manufacturable Wall Thickness |
1+0.25
+0.15 |
1.5+0.25
+0.15 |
2+0.25
+0.15 |
2.5+0.25
+0.15 |
3+0.25
+0.15 |
3.5+0.25
+0.15 |
4+0.25
+0.15 |
4+0.25
+0.15 |
| Manufactured wall Thickness |
1-0.025 |
1.5-0.03 |
2-0.035 |
2.5-0.04 |
3-0.045 |
3.5-0.05 |
4-0.055 |
4-0.06 |
| Composition analysis of jf alloy |
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| Chemical elements |
HTB-800 |
HTB-720 |
HTB-700 |
HTB-20 |
| Cu |
Remainder |
Remainder |
Remainder |
0.7~1.3 |
| Pb |
9.0~11.0 |
21.0~27.0 |
26.0~33.0 |
- |
| Sn |
9.0~11.0 |
3.0~4.5 |
0.5 |
17.5~22.5 |
| Zn |
0.5 |
0.5 |
0.5 |
- |
| P |
0.1 |
0.1 |
0.1 |
|
| Fe |
0.7 |
0.7 |
0.7 |
0.7 |
| Ni |
0.5 |
0.5 |
0.5 |
0.1 |
| Sb |
0.2 |
0.2 |
0.2 |
- |
| Ai |
- |
- |
- |
Remainder |
| Si |
- |
- |
- |
0.7 |
| Mn |
- |
- |
- |
0.7 |
| Ti |
- |
- |
- |
0.2 |
| Other |
0.5 |
0.5 |
0.5 |
0.5 |
| JF Bimetal bushing Physical Characteristics |
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| Physical Characteristics |
HTB-800 |
HTB-720 |
HTB-700 |
HTB-20 |
| Load Limit N/M*M |
150 |
130 |
120 |
100 |
| Tensile Strenghth N/mm2 |
150 |
150 |
200 |
200 |
| Speed Limit Vmax m/s |
5 |
10 |
15 |
25 |
| Friction coef(Oil) |
0.06~0.14 |
0.06~0.16 |
0.08~0.16 |
0.08~0.17 |
PV Limit
N/mm2 m/s |
Grease |
2.8 |
2.8 |
2.5 |
- |
| Oil |
10 |
10 |
8 |
6 |
| "Sapphire" Fatigue Clasee Mpa |
125 |
115 |
105 |
85 |
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