Elevator PU Polyurethane Buffer Lift Buffer For Elevator Safety Brake

Elevator Polyurethane Buffer: Advanced Energy Absorption for Safe Terminal Stopping

The elevator polyurethane buffer is a critical safety component designed to absorb kinetic energy and provide controlled deceleration when an elevator car or counterweight approaches its terminal landing. Engineered as an alternative to traditional oil or spring buffers, polyurethane buffers offer superior durability, maintenance-free operation, and consistent performance across diverse environmental conditions.

Key Features & Benefits:

• High Energy Absorption Efficiency – Compresses under load to dissipate impact forces, rated for speeds up to 2.5 m/s (EN 81-20 compliant).

• Long Service Life – Resistant to wear, UV exposure, and temperature fluctuations (-40°C to +80°C) without performance degradation.

• Maintenance-Free Design – Unlike hydraulic buffers, polyurethane models require no fluid replenishment or seals, reducing lifecycle costs.

• Compact & Lightweight – Up to 40% lighter than traditional buffers, optimizing pit space and installation flexibility.

Technical Specifications:

• Progressive Compression – Nonlinear deformation absorbs energy smoothly, preventing abrupt stops.

• Fire-Resistant Formulations – Self-extinguishing grades available for enhanced safety compliance.

• Corrosion Resistance – Ideal for humid or coastal environments where metal buffers may degrade.

Applications:

• Machine-Room-Less (MRL) Elevators – Space-saving solution for modern low-to-mid-rise buildings.

• High-Traffic Commercial Lifts – Withstands frequent impacts without fatigue.

• Regenerative Drive Systems – Compatible with energy-efficient elevator designs.

Specifications:

Product type	Stroke	Specification	Load (P+Q)KG	Installation Dimension				Speed
		DxH		B	b	h	Φ
SN-LD-HC-L1	70	65x80	200~1200	95	65	4	12	≤1.0m/s
SN-LD-HC-L3	90	80x100	200~2000	108	80	4	12	≤0.63m/s
SN-LD-HC-L6	88	100x100	220~2500	128	96	4	14	≤0.63m/s
SN-LD-HC-L7	99	100x120	500~2500	128	96	4	14	≤1.0m/s
SN-LD-HC-L11	165	120x192	1000~3500	160	126	4	14	≤1.0m/s
SN-LD-HC-L12	121	130x150	800~4800	160	126	4	14	≤1.0m/s
SN-LD-HC-L13	170	130x200	1000~4200	160	126	4	14	≤1.0m/s
SN-LD-HC-L17	184	160x200	1800~5800	200	156	4	14	≤1.0m/s
SN-LD-HC-L19	150	200x200	1800~7500	246	196	4	16	≤1.0m/s
SN-LD-YD5588	79	100x100	200~2500	150	125	6	15	≤1.0m/s
SN-LD-YD5589	89	100x125	600~1800	150	125	6	15	≤1.0m/s
SN-LD-YD5590	140	125x200	1600~3100	180	140	6	15	≤1.0m/s
SN-HC-B-2	44	100x60	500~2000	128	96	4	14	≤0.63m/s

Specifications:

Product type	Stroke	Specification	Load (P+Q)KG	Installation Dimension				Speed
		DxH		B	b	h	Φ
SN-HC-A-1	34	80x50	200~500	80	35	50	17	≤1.0m/s
SN-HC-B-1	45	80x50	200~1200	80	35	50	17	≤0.63m/s
SN-HC-B-3	24	80x30	220~600	80	35	30	17	≤0.63m/s
SN-HC-A-L01	69	80x80	230~1600	80	35	80	17	≤1.0m/s
SN-HC-A-L02	48	100x80	240~2500	100	35	80	17	≤1.0m/s
SN-HC-A-L03	51	125x80	230~3500	125	35	80	17	≤1.0m/s
SN-HC-A-L04	53	165x80	800~5000	165	35	80	17	≤1.0m/s
SN-HC-A-L05	64	220x80	1800~7200	220	35	80	17	≤1.0m/s
SN-HC-A-L06	126	125x200	220~1800	125	35	200	17	≤1.0m/s
SN-LD-CE-01	45	80x80	230~1000	80	35	80	17	≤1.0m/s
SN-LD-CE-03	53	125x80	650~3500	125	35	80	17	≤1.0m/s
SN-LD-CE-04	43	165x80	800~5000	165	35	80	17	≤1.0m/s

FAQ
1. Are the elevator wire ropes durable?
The elevator wire rope has special provisions and requirements. Configuration is not only for wire rope and rated load, but also considered the size of the traction, as a result, the tensile strength of wire rope is greater than the weight of the lift. The safety factor is equipped with more than four wire rope. So it won’t break at the same time.
2. Is it dangerous for power failure suddenly during the elevator running?
If it occurs, the elevator will automatically stop due to the electrical and mechanical safety device. In case of power failure,elevator brakes will automatically taken. In addition, the power supply departments such as planned outage, prior notice are also operating.
3. Will us be hurt when it closed suddenly?
In the closing process, if people touch the hall door, the door of elevator will automatically restart without any danger. With anti clamping switch, once the gate touched, this switching action make the elevator unable to be closed and even reopened. In addition, closing force is also available here.
4. How the elevator running?
Elevators are operated with a counterweight wire rope through the (tractor) traction drive, making ups and downs on the guide rail.
5. Is the escalator installation complicated?
We believe the functions of an escalator are not necessarily proportional to the operation complexity. Therefore, escalators designed by us apply an integrated structure, so that the equipment is more precise and more efficient and allows easier and more convenient commissioning.
6. Do you have any cerifications?
Yes, we do with ISO9001 / CCC / CE Certificates for u.

We offer 3 year quality guarantee for all products. Our main products are: Elevator Buttons, Elevator Light Curtain, Photoelectric Switch, Elevator Display, COP & LOP, Traction Machine, Door Mechanism. And we provide best prices on: Guide Rail, Guide Shoe, Counterweight Filler, Rope fastening, Wire Rope, Safety Gear, Speed Governor, Oil Buffer, Maintenance box, Emergency leveling device, Elevator Intercom, Limit Switch, Fans and other parts for elevator. 

China leading provider of #Elevator and #ElevatorParts, SHANGHAI SUNNY ELEVATOR CO. ,Shanghai Sunny Elevator Co., Ltd
TOP3 Elevator parts exporter in China, exported 7443 containers to 82 countries.
Support one-stop service, currently serving more than 3,000 overseas customers.
If you have any questions, please feel free to ask us.

Why choose us?
Shanghai Sunny Elevator Co., Ltd, founded in 1992, is a 33-year professional manufacturer specializing in designing and producting Opto-Electro-Mechanical products.
Sunny Elevator has started import and export since 2012.
We have experience in exporting all kinds of elevator parts and complete elevator to 80 countries all over the world.