- NBSL Lift Parts
- NINGBO OULING Lift Parts
- ESHINE Lift Parts
- SCHINDLER Lift Parts
- HYUNDAI Lift Parts
- KONE Lift Parts
- MITSUBISHI Lift Parts
- THYSSENKRUPP Lift Parts
- CANNY Lift Parts
- SIGMA Lift Parts
- HITACHI Lift Parts
- TORIN DRIVE Lift Parts
- BLUELIGHT Lift Parts
- FURDER Lift Parts
- BLT Lift Parts
- FUJI Lift Parts
- MONARCH Lift Parts
- MONTANARI Lift Parts
- MONA DRIVE Lift Parts
- KOWA JAPAN Lift Parts
- NIDEC KDS Lift Parts
- STEP Lift Parts
- XIZI Lift Parts
- YASKAWA Lift Parts
- HP MONT Lift Parts
- ARKEL Lift Parts
- OTIS Lift Parts
- INVT Lift Parts
- WITTUR Lift Parts
- Lift Spare Parts
- Complete Lift
- Escalator Parts
Elevator Polyurethane Buffer | OH-J11 Buffer
Features:
- Model: OH-J11
- System quality: for detailed parameters, see summary table
- Product type: Energy storing type
Description
Description
Elevator Polyurethane Buffer | OH-J11 Buffer
OH-J11 Elevator Polyurethane Buffer is an energy-accumulation safety component designed for low-speed elevators and counterweight systems. Unlike hydraulic buffers that use oil, polyurethane (PU) buffers rely on the micro-cellular structure of high-grade elastomers to absorb and dissipate impact energy.
This model is a cost-effective, maintenance-free solution for residential and commercial lifts where the rated speed is typically 1m/s.
Technical Specifications (OH-J11)
| Feature | Specification |
| Model | OH-J11 |
| Material | Micro-cellular Polyurethane Elastomer |
| Rated Speed | 1m/s |
| Total Allowed Mass | 500 kg – 1,800 kg (Typical range) |
| Compression Ratio | Up to 75% of total height |
| Compliance | GB 7588 / EN 81-20 / EN 81-50 |
Key Advantages of the OH-J11 Buffer
1. High Impact Resilience
The OH-J11 is manufactured using a specialized foaming process that creates millions of tiny air pockets. Upon impact, these cells compress to absorb the kinetic energy of the elevator car, providing a reliable safety stop.
2. Corrosion and Oil Resistance
Because elevator pits are often damp or contain spilled grease, the OH-J11 is engineered to be resistant to:
-
Hydraulic Oils & Lubricants: Will not degrade if exposed to machine oils.
-
Aging & Hydrolysis: Enhanced resistance to moisture-related breakdown.
-
Chemical Exposure: Durable against common cleaning agents used in building maintenance.
3. Maintenance-Free Design
Unlike hydraulic buffers, the OH-J11 has:
-
No Oil to Leak: Eliminates the need for sight glasses or fluid refills.
-
No Mechanical Parts: No springs or pistons that can rust or seize.
-
Easy Installation: Typically mounted via a single central bolt or a steel base plate directly to the pit floor.
