Polyurethane Buffer – Engineered for Impact & Vibration Control

Product Overview

Our Polyurethane Buffer is a high-performance industrial shock absorption component. Unlike rubber or spring buffers, polyurethane offers superior load capacity, tear resistance, and rebound control. Ideal for conveyors, automated guided vehicles (AGVs), overhead cranes, mining equipment, and heavy machinery.

Key applications: end-stop protection, cylinder cushioning, anti-collision systems, and vibration isolation.

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Why Choose Polyurethane Over Rubber or Spring?

Feature	Polyurethane Buffer	Rubber Buffer	Spring Buffer
Load capacity	High	Medium	High
Energy return (rebound)	Controlled (60–70%)	Low (<50%)	High (>90%)
Tear resistance	Excellent	Poor	N/A
Oil & chemical resistance	Good	Poor	Fair
Noise damping	Excellent	Good	Poor
Customizable shape	Yes (castable)	Limited	Very limited

Verdict: Polyurethane provides the best balance of shock absorption, durability, and mechanical damping for most industrial applications.

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Technical Specifications

Parameter	Value Range
Material	Cast polyurethane (elastomer)
Hardness (Shore A)	70A – 95A (customizable)
Tensile strength	≥ 30 MPa
Elongation at break	≥ 400%
Compression set	≤ 20% (at 70°C / 22h)
Operating temperature	-35°C to +85°C
Flame retardant option	Available (MSHA / UL 94 V-0)
Anti-static option	Available (≤1×10⁸ Ω)

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Key Performance Advantages

✅ High Energy Absorption

Controlled rebound prevents bouncing, reducing secondary impact damage to equipment.

✅ Excellent Wear & Tear Resistance

Withstands repeated high-cycle compression without cracking or permanent deformation.

✅ Weather & Chemical Resistant

Unaffected by water, ozone, UV (with stabilizers), dilute acids, alkalis, and most industrial oils.

✅ Quiet Operation

Significantly reduces noise compared to steel or rubber spring systems.

✅ Custom Molding

Any shape, thickness, mounting hole pattern, or embedded metal insert available.

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Typical Applications

Industry	Application Example
Mining	Conveyor belt stop buffers, feed chute impact pads
Material Handling	AGV collision bumpers, pallet stops, rail end stops
Heavy Machinery	Cylinder cushions, overhead crane rail buffers
Automation	Pneumatic cylinder end stops, robotic arm shock pads
Port & Marine	Dock fenders, ship-to-shore buffer blocks

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Product Variants

Type	Hardness	Best For
Soft buffer (70A)	Low	Delicate equipment, light loads, high-frequency impacts
Standard buffer (85A)	Medium	General industrial use, conveyors, AGVs
Hard buffer (95A)	High	Heavy loads, mining, crane end stops
Anti-static buffer	85A–95A	Coal mines, explosive dust environments
Flame-retardant buffer	85A–95A	Underground mining, fire-code facilities

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Ordering & Customization

We offer made-to-order polyurethane buffers with:

Any length, width, height (up to 2000 mm)

Round, square, rectangular, or custom profiles

Threaded inserts, through-holes, or mounting studs

Color coding for hardness or application

Low MOQ (minimum order quantity) for prototyping

Lead time:

Standard sizes: 3–5 working days

Custom molds: 10–15 working days

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Why Buy From Us?

In-house casting – full quality control from raw material to finished part

Engineering support – we help you select the right hardness and geometry

Test reports – available upon request (compression set, abrasion, resistivity)

 

Contact Us

Get a quote or request a free sample. Our engineers can recommend the right blade hardness and design for your conveyor width and material type.

Web: www.chinapuela.com

Mail: zbhjpu@gmail.com

WhatsApp: 8613969341655

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