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Elevator PU Polyurethane Buffer Lift Buffer For Elevator Safety Brake
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.
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.
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.
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.