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Item NO.: CHB-JBW
CHB-JBW bronze Worm. Based on high strength brass, lubricating by oil added in the groove, which has the same performance with Tin bronze bushing but with much higher hardness, the life time for low speed application is 2 times of tin bronze bushing. It can be used in heavy load condition.
We can offer different materials and make the worms according to customer’s drawings and requirements.
| Composition and Physical proenrties | Material | ||||||
| CHB-600 | CHB-600-1 | CHB-600-2 | CHB-600-3 | CHB-600-4 | CHB-600-5 | ||
| ZCuZn25Al6Fe3Mn3 | ZCuSn5Pb5Zn5 | ZCuSn6Zn6Pb3 | ZCuSn10P1 | ZCuPb10Sn10 | ZCuA19Fe4Ni4Mn2 | ||
| Cu | — | — | — | — | — | — | |
| Zn | 25 | 4.0-6.0 | 4.0-7.0 | ||||
| Sn | 0.2 | 4.0-6.0 | 4.0-7.0 | 9.0-11.5 | 9.0-11.0 | ||
| Pb | 0.2 | 4.0-6.0 | 2.0-4.0 | 8.0-11.5 | 0.2 | ||
| Al | 4.5-7.0 | 0.01 | 8.5-10 | ||||
| Fe | 2.0-4.0 | 0.25 | 4.0-5.0 | ||||
| Mn | 1.5-4.0 | 0.2 | 0.8-2.5 | ||||
| P | 0.5-1.0 | 0.05 | |||||
| Ni | 2 | 4.0-5.0 | |||||
| (MPa) Tensile strength | 750 | 220 | 230 | 360 | ≤220 | ≤630 | |
| (MPa) Yield point | 400 | 100 | 110 | 170 | 三140 | ≤250 | |
| (%) Elongation | 10 | 13 | 6 | ≥5 | ≥16 | ||
| (HB)Hardness | 210-270 | 60-80 | 60-80 | 88 | 65 | 150 | |
| Density | 8.2 | 8.7 | 8.5 | 8.7 | 8.9 | 7.6 | |
| Line expansion a/10⁻⁶/℃-1 | 19.8 | 19.1 | 19.5 | 18.5 | 19.2 | 20 | |
| Thenmal conductivity W/(M-C) | 50 | 56 | 55 | 50 | 45 | 71 | |
| Friction factor | Lubricant | 0.12 | 0.01 | 0.02 | 0.08 | 0.005 | 0.01 |
| No Lubricants | 0.16 | 0.2 | 0.1 | 0.1 | 0.18 | ||
Item NO.: CHB-JBW
CHB-JBW bronze Worm. Based on high strength brass, lubricating by oil added in the groove, which has the same performance with Tin bronze bushing but with much higher hardness, the life time for low speed application is 2 times of tin bronze bushing. It can be used in heavy load condition.
We can offer different materials and make the worms according to customer’s drawings and requirements.
| Composition and Physical proenrties | Material | ||||||
| CHB-600 | CHB-600-1 | CHB-600-2 | CHB-600-3 | CHB-600-4 | CHB-600-5 | ||
| ZCuZn25Al6Fe3Mn3 | ZCuSn5Pb5Zn5 | ZCuSn6Zn6Pb3 | ZCuSn10P1 | ZCuPb10Sn10 | ZCuA19Fe4Ni4Mn2 | ||
| Cu | — | — | — | — | — | — | |
| Zn | 25 | 4.0-6.0 | 4.0-7.0 | ||||
| Sn | 0.2 | 4.0-6.0 | 4.0-7.0 | 9.0-11.5 | 9.0-11.0 | ||
| Pb | 0.2 | 4.0-6.0 | 2.0-4.0 | 8.0-11.5 | 0.2 | ||
| Al | 4.5-7.0 | 0.01 | 8.5-10 | ||||
| Fe | 2.0-4.0 | 0.25 | 4.0-5.0 | ||||
| Mn | 1.5-4.0 | 0.2 | 0.8-2.5 | ||||
| P | 0.5-1.0 | 0.05 | |||||
| Ni | 2 | 4.0-5.0 | |||||
| (MPa) Tensile strength | 750 | 220 | 230 | 360 | ≤220 | ≤630 | |
| (MPa) Yield point | 400 | 100 | 110 | 170 | 三140 | ≤250 | |
| (%) Elongation | 10 | 13 | 6 | ≥5 | ≥16 | ||
| (HB)Hardness | 210-270 | 60-80 | 60-80 | 88 | 65 | 150 | |
| Density | 8.2 | 8.7 | 8.5 | 8.7 | 8.9 | 7.6 | |
| Line expansion a/10⁻⁶/℃-1 | 19.8 | 19.1 | 19.5 | 18.5 | 19.2 | 20 | |
| Thenmal conductivity W/(M-C) | 50 | 56 | 55 | 50 | 45 | 71 | |
| Friction factor | Lubricant | 0.12 | 0.01 | 0.02 | 0.08 | 0.005 | 0.01 |
| No Lubricants | 0.16 | 0.2 | 0.1 | 0.1 | 0.18 | ||
