- Ultra durable PU shock absorbers for heavy-duty vibration damping.
- Custom cast sizes match all industrial and automotive equipment.
- Stable performance in oil, dust, and harsh factory environments.
- Reduces noise and vibration for a safer, quieter work environment.
- Competitive price with reliable after-sales service support.
INDUSTRIES SERVED: Automotive, Manufacturing & Automation, Logistics
As a leading China manufacturer and supplier of polyurethane shock absorbers, we specialize in high-quality components that stand up to demanding conditions. Our products, also known as urethane shock absorbers or PU shock absorbers, are engineered for excellent energy absorption and minimal wear over time. With years of experience, we focus on precision manufacturing to meet international standards, ensuring each piece provides consistent performance. Whether you're looking for standard sizes or customized solutions, our team prioritizes quality control and quick turnaround times.
These versatile absorbers find wide use in OEM partnerships and factory settings across industries like automotive, heavy machinery, and construction. In automotive OEM applications, they integrate seamlessly into suspension systems to reduce road noise and improve ride comfort. Factories rely on them for equipment like conveyor systems and presses, where they handle repetitive impacts without breaking down. From mining operations to manufacturing lines, our PU shock absorbers help extend machinery life and cut maintenance costs.
| Custom Parameter | Typical Range / Options | Equipment, Industry & Use Cases |
|---|---|---|
| Outer Diameter | 10 mm – 600 mm+ | Urethane bump stops for hydraulic press, large PU buffers for steel mill equipment |
| Height / Length | 5 mm – 500 mm+ | Short bump stops for conveyor end stops, tall urethane shock absorbers for crane buffers |
| Material Hardness (Shore A/D) | 40A – 70D | Soft urethane buffers for sensitive assembly lines, hard PU stops for heavy stamping presses |
| Core / Insert | Solid, hollow bore, bonded steel sleeve | Threaded steel insert shock absorbers for quick bolt-on replacement on OEM machinery |
| Geometry / Profile | Cylindrical, conical, multi-stage, custom | Conical PU buffers for progressive rate response, multi-stage for mining screen vibrators |
| Compression Load Rating | Light duty to 500 kN+ (custom) | Heavy-duty urethane shock absorbers for overhead crane buffers, dock levelers, and rail buffers |
| Rebound / Energy Absorption | Adjusted by compound and geometry | Low-rebound PU buffers for impact presses, high-rebound urethane for cyclic conveyor applications |
| Temperature Range | -40°C to +120°C (custom compounds) | Cold-storage facility buffers, high-temperature forging line bump stops |
| Bonding / Mounting | Cast-bonded, press-fit, bolt flange, adhesive | OEM replacement urethane shock mounts, factory retrofit kits for legacy equipment |
- Automotive industry: for car, truck and bus suspension systems and engine mounts
- Construction: for hydraulic breakers, cranes and concrete mixer vibration damping
- Mining: for conveyor belts, crushers and drilling equipment shock absorption
- Manufacturing: for industrial machines, production lines and robotic arms
- Metalworking & Stamping: dampening high-force impacts in punch presses and shearing equipment to reduce noise and fatigue.
- Warehouse & Logistics: protecting high-speed conveyor diverters and sortation arms from impact damage in parcel hubs.
- Packaging Machinery: gently stopping and positioning products on filling and capping lines to prevent damage.
- Superior energy absorption compared with rubber. PU handles higher loads with lower deflection at equivalent hardness.
- Excellent oil and chemical resistance, suitable for industrial and automotive use.
- Customizable hardness, from soft vibration damping to rigid impact absorption.
- High dimensional stability under heavy load and extreme temperature.
- Lightweight design, easy to install and replace with low maintenance cost.
- Good UV resistance, no aging or cracking for outdoor long-term use.
- Better load-bearing capacity than rubber, ideal for heavy-duty equipment Low noise operation, improving workplace safety and comfort.
- Cost advantage from direct China manufacturer supply chain.
- Strict quality control and inspection ensure stable hardness and dimension.
- Free or low-cost sample policy before bulk order confirmation.
- Low MOQ to support small factory or new agent market testing.
- Dedicated after-sales service team for technical support and replacement guidance.
A large automotive manufacturer in Europe was facing frequent replacement of rubber shock absorbers for their heavy-duty truck suspension systems, with a service life of only 6 months. After switching to our custom cast Shore A 70 polyurethane shock absorbers, the service life was extended to 2 years, reducing maintenance frequency by 75% and cutting annual procurement costs by 60%. Our local agent provided technical support for installation, and the product parameters fully met their industrial standards.
A mining company in Australia needed shock absorbers for their conveyor systems in high-abrasion and high-dust mine environments. Traditional metal shock absorbers were too heavy and rubber ones wore out quickly. Our high wear resistant PU shock absorbers (Shore D 60) were custom cast to their equipment dimensions, with excellent abrasion and dust resistance. The products have been in stable operation for 18 months without replacement, improving the mine’s production efficiency by 20%.
A construction equipment supplier in the Middle East required urethane shock absorbers for hydraulic breakers that could withstand high temperatures (up to 100℃) and heavy impact. Our custom high-temp polyurethane shock absorbers with UV resistance were designed for their specific models, with stable performance in extreme desert conditions. We delivered 500 pieces within 10 days with low MOQ.
Selecting the right PU shock absorber starts with getting the application data right. Here is a practical checklist engineers and procurement teams can use:
Step 1 — Define the impact load
Determine peak impact force (kN), impact velocity (m/s), and moving mass. These three values drive the energy absorption requirement and the correct durometer and geometry choice.
Step 2 — Choose durometer by load and deflection
Softer compounds (40A–60A) suit lower loads and applications where cushioning travel is acceptable. Harder compounds (80A–70D) handle high loads with minimal deflection. Request load-deflection curves and sample parts at 2–3 hardness levels to validate.
Step 3 — Specify geometry for load-deflection profile
Cylindrical profiles give near-linear response. Conical and multi-stage profiles give progressive response — resistance increases as deflection increases. For crane and press applications, progressive profiles protect structures better under variable impact loads.
Step 4 — Confirm mounting and installation
Decide between solid pads, hollow bore, bonded steel sleeves, or threaded inserts. Match bolt patterns and shaft sizes to factory drawings. Request factory samples to confirm fit before production.
Step 5 — Check chemical and temperature exposure
Identify oils, coolants, solvents or outdoor exposure. Request compatibility data and specify polyether polyurethane or polyester based polyurethane if hydrolysis or chemical resistance is critical.
Step 6 — Validate with samples
Order 1–3 sample parts, install in a representative location, and run for 30–90 days. Record deflection, wear, and any dimensional change. Use this data to finalize the specification and compare suppliers objectively.
Step 7 — Evaluate total cost of ownership
Compare price per unit alongside expected service life, replacement labor, and agent availability for local stocking. A slightly higher unit price with 3× the service life delivers a better procurement outcome.
Price varies by size, hardness, and quantity. Custom cast types are quoted based on technical parameters.
Yes, sample orders are available for testing and validation.
Absolutely, our factory supports full OEM services with custom cast moulds for any equipment, with clear technical parameters provided.
PU offers better wear resistance, higher load capacity, and longer service life.
Yes. We are manufacturer. Welcome to visit our factory.
Yes. The process includes Share needs → design & quote → prototype (opt) → production → delivery.
We have 10 inspectors to carry out raw material inspection, process control ,first article inspection and final inspection.
We use the ERP system to execute orders, and can check the order status and expected delivery time at any time.
All of products with 3-6 months guarantee (except very frequently wearing parts).
We will response in 24 hours with solutions such as replacement or reworking.
We have dedicated personnel to sort out and maintain molds regularly.
20,000 times for compressions molds and 30,000 time for casting molds
Due to the large quantity of molds, we can keep the molds for free for 2 to 3 years even if no order.
Customers only need to pay mold cost once. We will cover the cost if molds are damaged or reach the lifespan.
