Blue POM Composite Metal Plain Bearings Bushing Self Lubricating SF-2 Type with 250N/mm² Static Load and -40°C to +110°C Temperature Range
Price:
Negotiable
MOQ:
Negotiable
Delivery Time:
30 days
Brand:
Joyreap
Product Description
Blue POM DX Bushing Metal Polymer Composite Plain Bearing SF-2 is a self-lubricating boundary lubricating bearing with blue POM coating. This three-layer oilless bearing features the same material structure as other DX bearings and is also known as SF-2 boundary lubricating bearing, plain sliding bearing, and dry bushes.
Material Structure
- POM with fillers
- Porous bronze
- Steel backing
- Copper plating or tin plating
Key Characteristics
- Low friction coefficient for smooth operation
- Excellent corrosion resistance and long service life
- Suitable for marginally lubricated and dry operating conditions
- Performance comparable to international DS bushing standards
Product Availability
Standard cylindrical DX bearings, DX thrust washers, and strips are readily available. Custom designs can be manufactured according to your specific requirements and technical specifications.
Industrial Applications
ZR-020B composite plain bearings are widely used in hoisters, bulldozers, tower cranes, printing and dyeing machinery for textiles, steering gear systems, power steering applications, and various industrial equipment.
Technical Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Max Static Load | 250 N/mm² | Operating Temperature | -40°C to +110°C |
| Max Load (Very Low Speed) | 140 N/mm² | Max Speed (Greased) | 2 m/s |
| Max Load (Rotating/Oscillating) | 70 N/mm² | Max Speed (Continuous Oiling) | >2 m/s |
| Max PV (Grease Lubricated) | 3 N/mm²·m/s | Thermal Conductivity | 50 W/(m·K) |
| Coefficient of Thermal Expansion | 11×10⁻⁶/K | Friction Coefficient | 0.05-0.20 |
Note: Oil deposits must be filled with grease before bearing assembly.
Tolerance Specifications
- Housing: ØH7
- Bushing inner diameter after installation: D9 to D10
- Shaft tolerance: h8
Mounting Recommendations
- Housing: Mounting bevel minimum 1.5 mm × 15-45°
- Shaft Material: Steel (hardened or untempered) with surface roughness ≤ Rz 4-6
- Shaft: Mounting bevel 5 mm × 15° with edges rounded
- Use adequate force fitting mandrel; grease lubrication of outer surface may be required during mounting
- Adhesive application: Ensure no contact with sliding surface
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Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Jiaxing Joyreap Precision Machinery Co.,Ltd
Location
No 168 Kapa Road Dayun Town Jiashan Zhejiang China
Contact Person
Catherine Hu