PU Sleeves
Seamless cast polyurethane protective sleeves engineered for press-fit installation over steel conveyor rollers, coil-handling expansion mandrels, slurry cyclone cones, and drive shafts. Provides durable, non-marking, cut-resistant elastomeric shielding.
Types & Configurations of PU Sleeves
Coil Mandrel Expansion Sleeves
Thick-walled polyurethane sleeves protecting internal bores of cold-rolled steel and aluminum coils.
Conveyor Roller Protective Sleeves
Tubular polyurethane sleeves stretched over gravity and powered conveyor steel rollers.
Slurry Hydrocyclone Liner Sleeves
Tapered internal polyurethane replacement sleeves for mineral beneficiation cyclones.
Cable Hauling Sheave Sleeves
Protective PU lining inserts for wire rope winch drums and guide sheaves.
Drive Shaft Anti-Wear Sleeves
Precision ground internal bore sleeves protecting rotating shafts from abrasive particle ingress.
Key Industrial Applications
Specifications & Technical Details
PU Sleeves 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 |
|---|---|
| Internal Diameter (ID) | 15mm up to 800mm ID |
| Wall Thickness | 2.0mm to 50.0mm wall thickness |
| Length | Continuous cast lengths up to 3,000mm |
| Durometer Hardness | 60A to 95A Shore A |
| Tensile Strength | 30.0 MPa to 50.0 MPa |
| Installation Method | Compressed air expansion sleeve fit or hydraulic puller press-fit |
| Operating Temp | -25°C to +85°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 Sleeves.
Production Batch Gallery
Actual production batch examples of PU Sleeves 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.