SF-1P Oil-Free DU Bushing, 3-layer PTFE Bronze Sleeve for Shock Absorber & Hydraulic Cylinder, Reciprocating Motion Self Lubricating Bushing
Product Details
| Static Load Capacity: | 250 N/mm² | Dynamic Load Capacity: | 140 N/mm² |
|---|---|---|---|
| Max Load For Oscillating Motion: | 60 N/mm² | Friction Coefficient (μ): | Dry:0.04~0.20; Oil Lubricated:0.02~0.08 |
| Working Temperature Range: | -195℃ ~ +280℃ | Max Sliding Speed: | Dry Friction:2.5 M/s; Oil Lubrication:5 M/s |
| Max PV Value (Dry Friction, Intermittent): | 3.6 N/mm²·m/s | Max PV Value (Dry Friction, Continuous): | 1.8 N/mm²·m/s |
| Max PV Value (Oil Lubrication): | 50 N/mm²·m/s | Thermal Conductivity: | 42 W/(m·K) |
| Linear Expansion Coefficient: | 11×10⁻⁶ /K | ||
| Highlight |
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Product Description
1. Material Structure
SF-1P is a 3-layer composite self-lubricating bushing specially optimized for reciprocating cyclic motion, comparable to foreign DD2 grade, lead-free formula complying with environmental requirements.
Backing: Low carbon steel base with anti-corrosion plating
Middle layer: Porous sintered bronze powder (0.2~0.3mm), high thermal conductivity
Surface layer: Modified PTFE compound film (0.01~0.03mm), tailored for reciprocating wear resistance
2. Material & Performance Features
Reciprocating Wear & Fatigue Resistance: Custom PTFE formula for back-and-forth cyclic movement, greatly reduces adhesive wear under frequent stroke motion.
Stable Oil Film & Anti-Seizure: Maintains intact lubricating film even under sudden oil cut-off, effectively protects mating shaft surface from abrasion.
Lead-Free & Eco-Friendly: Non-leaded surface compound, meets RoHS requirements for automotive and hydraulic components.
High Dimensional Stability: Solid steel backing keeps precise size under repeated alternating load, low deformation during long stroke cycles.
3. Application Scenarios
Specially designed for reciprocating sliding parts. Widely used in automotive & motorcycle shock absorbers, hydraulic cylinder guide bushes, hydraulic motors, pneumatic components, linear reciprocating machinery.
Product Highlights
1. Material Structure SF-1P is a 3-layer composite self-lubricating bushing specially optimized for reciprocating cyclic motion, comparable to foreign DD2 grade, lead-free formula complying with environmental requirements. Backing: Low carbon steel base with anti-corrosion platingMiddle layer: ...
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