The crane shock absorber is a safety device installed in the crane’s metal structure at the endpoints to absorb kinetic energy during collisions, reducing impact forces.Also known as crane buffers, it ensures smoother operation and longer equipment life.
Zomax offers a range of commonly used crane buffers, including: 1. Polyurethane buffer 2. Hydraulic buffer 3. Spring buffer 4. Rubber buffers
As well as buffers for specialized applications: 5. Composite buffer 6. Damping buffer 7. Gas-hydraulic
Zomax Crane is a global manufacturer with 20+ years in material handling equipment and crane components, providing reliable, high-quality solutions worldwide.
1. | Features：Applicable in high and low frequency impacts. Working temperature: -20~60℃. Stroke:60-240 mm buffer force: 28-675 KN; Cushioning process: consume 40% of the energy, 60% stored and finally released. Recommended service life: 1 year. Limited resistance to ultraviolet light.
Advantage:Large energy absorption, good cushioning performance, moderate rebound, compressibility and good resilience. Light weight and cost-effective Provides soft collisions with no noise or sparks.
Applications:Suitable for overhead and gantry cranes, crane trolleys, slow-speed elevators, etc. Can be used in explosion-proof place,not suitable for metallurgical environments |
2. | Features：Applicable in high and low frequency impacts. Working temperature: -20~60℃. Stroke:50-80 mm buffer force: 80-315 KN; Loadable speed: <3.5m/s Recommended service life: 3 year Overall product life is limited by spring life
Advantage:High suction capacity Uniform buffer No special requirements for use environment 100% reset after unloading
Applications:Can be used for heavy cranes, port machinery, elevators, etc. |
3. Spring buffer
| Features：Applicable in high and low frequency impacts. Working temperature: -20~60℃. Stroke:80-115 mm buffer force: 5-18 KN; Loadable speed: <2m/s Recommended service life: 3 year Low energy absorption, High rebound force.
Advantage:Unaffected performance in harsh conditions like high-wind, sandy, and other challenging environments. High temperature resistance Corrosion resistance No occurrence of aging-related failures Stable operation
Applications:Heavy duty cranes, port machinery, mining machinery.Can be used in high-wind, sandy, and other challenging working environments.
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4. Rubber buffer
| Features：Applicable in high and low frequency impacts. Working temperature: -20~60℃. Stroke:22-140 mm buffer force: 16-630 KN; Loadable speed: <0.9 m/s Cushioning process: consume 30-50% of the energy, small internal friction, small rebound Recommended service life: 20 year Low energy absorption
Advantage:Simple construction Light weight and cost-effective Provides soft collisions with no noise or sparks Unaffected performance in harsh conditions like high-wind, sandy, and other challenging environments. No occurrence of aging-related failures Stable operation
Applications:Heavy duty cranes, port machinery, mining machinery Can be used in special explosion-proof places,not suitable for metallurgical environments |
5. | Features：Applicable in high and low frequency impacts. Material: polyurethane, spring, seamless steel Working temperature: -20~60℃. Stroke:140-240 mm buffer force: 400-520 KN; Loadable speed: <0.9 m/s Recommended service life: 3 year Slow rebound Advantage:High energy absorption UV resistant, Corrosion resistant,adaptable to harsh environments No aging failure High impact strength Stable operation
Applications:Can be used for cranes and crane trolleys,not suitable for high temperature environments |
6. | Features：Applicable in low frequency impacts. Material: damping fluid, seamless steel Working temperature: -70~80℃. Stroke:35-80 mm buffer force: 40-230 KN; Loadable speed: <1.5 m/s Recommended service life: 15 year Slow rebound Advantage:High energy absorption High (low) temperature resistance Corrosion resistance No aging failure High impact strength Stable operation Adaptable to harsh environments Applications:Anti-collision cushioning for heavy cranes, harbor machinery and other large equipment. Can also be used in the railroad transportation industry and metallurgical industry |
7. | Features：Material: hydraulic oil, high pressure nitrogen, seamless steel Stroke:100-1000 mm buffer force: 400-325 KN; Loadable speed: <3.3 m/s Recommended service life: 5 year Large size and weight for a single product Advantage:Large stroke High energy absorption Uniform cushioning No special requirements for the use of the environment 100% reset after unloading Applications:Heavy crane, port machinery, mining machinery, elevator |
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