The buffer is a safety device installed in the crane’s metal structure at the endpoints to absorb kinetic energy during collisions, reducing impact forces.
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
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.
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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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