Jiaxing Joyreap Precision Machinery Co.,Ltd
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Bronze Back PTFE Coated Composite Plain Bearing DU-B Bushing
ZR-011 PTFE lined self-lubricating DU-B bronze bearing is made of bronze back with sintered bronze powder and PTFE layer. This type of sliding bearing is also called DU-B Bushing, PAP P11 composite plain bearing,bronze back coated self-lubricating bushing,oil free bronze bushes,SF-1B oiless bearing,plain dry sliding bronze bearings.
Material Structure
1.PTFE with Pb 0.01~0.03mm
2.Porous bronze 0.2~0.3mm
3.Bronze backing 0.7~2.3mm
Characteristics
Application
ZR-011 Bronze based DU bushing is widely used in steel metallurgy industry, cement grouting pumps and scrow conveyers of machine, marine and offshore equipment, dyeing machinery and so on.
Technical Data
| Specific load capacity (static) | ≤ 250 [ N/mm ] | |
| Specific load capacity (dynamic) | ≤ 140 N/mm at low speeds | |
| Specific load capacity(rotating oscillating) | ≤60N/m | |
| Friction value | 0.03 to 0.25 | |
| Temperature | -200 to +280 [ °C ] | |
| Max. dry running Pv (Short-term operation) | 3.6N/mm/s | |
| Max. dry running Pv (Continuous operation) | 1.8N/mm/s | |
| Max. speed (dry running) | 2m/s | |
| Max. speed (Hydrodynamic operation) | ＞2m/s | |
Tolerance Details
Housing Ø: H7
Bushing inner-Ø after mounting: H9
Shaft tolerance: f7 bis h8
Mouting Suggestion
Housing: Mounting bevel min. 1.5 mm x 15-45°
Shaft: Mounting bevel 5 mm x 15°, edges rounded
Shaft Material: Steel, hardened or untempered, surface roughness ≤ Rz 2-3
The application of an adequate force fitting mandrel is advisable. Grease lubrication of the outer surface may be necessary when mounting.
Stick-in
Adhesive should not contact the sliding surface