PU Bushes
High-performance cast polyurethane bushings engineered for automotive performance suspensions, heavy construction equipment pivots, and automated machinery linkages. Delivers 5x the load bearing capacity and tear resistance of conventional rubber bushings.
Types & Configurations of PU Bushes
Performance Control Arm Bushings
Two-piece polyurethane suspension bushings with stainless steel crush sleeves for track and street cars.
Flanged Heavy-Duty Pivot Bushes
Cast PU bushings absorbing severe radial shock and axial thrust in mining equipment linkages.
Split Anti-Roll Bar PU Bushings
Internally knurled/grooved bushes retaining PTFE grease for quiet, squeak-free sway bar operation.
Vibratory Feeder PU Spring Bushings
High-resilience PU elastomeric springs supporting resonant vibratory sorting trays.
Shackle Eye Leaf Spring PU Bushings
High-tensile polyurethane replacement bushes for off-road 4x4 leaf spring shackles.
Key Industrial Applications
Specifications & Technical Details
PU Bushes can be precision-manufactured in custom dimensions, wall thicknesses, cross-sections, and durometers to match your exact application specifications. Below are typical engineering cross-section drawings and technical parameters for reference.
Typical Dimension Drawings & Blueprint Cross-Sections
Technical Specifications
| Parameter | Specification / Options |
|---|---|
| Durometer Hardness | 60A, 75A, 85A, 90A, 95A Shore A, up to 60 Shore D |
| Tensile Strength | 35.0 MPa to 55.0 MPa (ASTM D412) - vastly exceeds rubber |
| Tear Strength (Die C) | 80 kN/m to 125 kN/m (ASTM D624) |
| Abrasion Loss | < 35 mm³ (DIN 53516 - ultra-low wear) |
| Inner Sleeve Hardware | Precision turned 304 stainless steel or cadmium plated carbon steel |
| Chemical Resistance | Impervious to road salts, mineral grease, motor oils, and ozone |
| Operating Temp | -30°C to +85°C (specialty grades up to +110°C) |
Material Selection & Properties
We offer specialized compound formulations tailored to chemical media, thermal extremes, static deflection, and dynamic fatigue requirements. The best material depends on your operating environment and required service life.
| Material / Polymer | Key Engineering Properties | Recommended Applications & Considerations |
|---|---|---|
| Cast Polyurethane 70A - 95A | 5x higher abrasion resistance than rubber, high load | Forklift drive wheels, heavy slurry scraper blades |
| Hydrolysis-Resistant PU (Ether) | Resists microbial attack, wet environments & water | Marine guide rollers, wastewater treatment scrapers |
| High-Resilience PU (Ester) | Superior dynamic spring properties, tear strength >60 kN/m | Die-spring blocks, metal-stamping cushions |
| Food-Grade Polyurethane | FDA 21 CFR 177.2600 compliant, oil & fat resistant | Bakery dough rollers, meat processing conveyor scrapers |
| Antistatic PU (ESD) | Surface resistivity 10⁶ - 10⁹ Ω/sq prevents sparking | Automated warehouse AGV wheels, paint-line rollers |
Important Engineering Guidance
The above properties are general characteristics. Final material selection depends on your specific application, operating conditions, load requirements, media compatibility, and service temperature. Please contact our polymer engineering team for tailored compounding guidance on PU Bushes.
Production Batch Gallery
Actual production batch examples of PU Bushes manufactured for OEM, automotive, railway, and heavy engineering clients. We manufacture standard catalogue sizes as well as bespoke custom geometries from your CAD models or physical samples.
Request an Engineering Quote
Share your required dimensions, polymer grade, or 2D/3D drawings for immediate engineering review and quote.