DU bushings self lubricating bearings steel bush
Its material structure is Steel base + Bronze powder + PTFE and filler.
This product is developed according to the high PV value of hydraulic pump.
It can offer the low friction coefficient and good anti-abrasion. It can be used in semi-dry condition.
This product is applied to medium and high pressure gear pump, ram pump, vane pumps, etc.
Physical and Mechanical Performance
| Performance Index |
Data |
Load capacity P
(Dry friction) |
Static Load |
250N/mm? |
| Dynamic Load |
140N/mm? |
| Oscoillation Load |
60N/mm? |
| Max line speed V |
Dry Lubrication |
2.5m/s |
| Oil Lubrication |
>10m/s |
| PV value limit |
Grease Lubrication |
1.8N/mm?· m/s |
| Oil Lubrication |
3.6N/mm?· m/s |
| Friction coef u |
Dry Lubrication |
0.08~0.20 |
| Oil Lubrication |
0.02~0.12 |
| Mating Axis |
Hardness |
>220 HB |
| Roughness |
Ra=0.4~1.25 |
| Material |
Steel+Bronze+(PTFE+Filler) |
| Typical application |
Application: medium, and high-pressure gear pump, ram pump, vane pumps, etc. |
| Working Temperature |
-200~+280ºC |
| Thermal conductivity |
40W/(m·k) |
| Coefficient of linear expansion |
11×10-6/K |
| Outside surface Plating |
copper/tin |
| We can also develop according to customers special request while out of this table |
Packing & delivery
Our Factory&Company
Q: Are you trading company or manufacturer?
A :Our management is focused on exporting activities for more than ten years and we have our own bushing factory.
Q: How to ensure the quality?
A:We produce as per the confirmed technology or drawings for each customer. And our factory has a strict quality control system.If the products is damaged due to our reasons,we assume full responsibilities.
Q: What is your delivery time?
A :Generally 10-25 days after order. It depends on the quantity
Q: Do you produce samples? Is it free or extra?
A :For standard products, we produce samples free of charge for our customers. And the express costs will be burdened by the customer, but can be returned after the order is placed.
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