HYF210A Elevator Hydraulic Oil Buffer, Energy‑Dissipating Safety Buffer For ≤1.75m/s Elevator

HYF210A is an energy‑dissipating hydraulic oil buffer specially designed for passenger and freight elevators, complying with global elevator safety standards EN81‑20 and GB safety requirements. It adopts integrated cylinder‑spring assembly with built‑in limit switch, filled with N46 hydraulic oil for stable energy dissipation. Its buffer stroke reaches 210 mm, rated applicable elevator speed ≤1.75 m/s, maximum striking speed 2.01 m/s, bearing load range 700‑3000 kg. Robust cast metal housing features anti‑rust painting, tight sealing structure to avoid oil leakage. Pre‑drilled base mounting holes allow quick installation inside elevator pit. It is a direct‑replacement spare part for modernization, maintenance and new elevator projects, delivering consistent, smooth damping performance for long‑term operation.

Functions

1. Acts as the final safety protection for elevator system, installed in elevator pit under car or counterweight.
2. Absorbs huge kinetic energy when elevator over‑travels, overspeed or accidentally lands, converts impact energy into heat via hydraulic oil throttling, decelerates elevator steadily to stop without hard collision or rebound.
3. Built‑in limit switch sends feedback signal to elevator control system once buffer is triggered, cuts off elevator driving circuit for extra safety interlock.
4. Spring structure automatically resets piston after impact, ready for next emergency use.

Working Environment & Rich Content

Working temperature:‑15℃ ~ +60℃; Relative humidity ≤95% (non‑condensing). For indoor elevator pit application; avoid heavy corrosive gas, continuous water splash and dust accumulation. The pit floor must bear the maximum impact load generated during buffer compression. Keep proper N46 hydraulic oil level, regular oil inspection and replacement is required for normal service life. Not for outdoor direct exposure. Widely used in commercial buildings, residential buildings, office building passenger elevators and light‑duty freight elevators. Available as original‑equivalent replacement unit for elevator repair & retrofit jobs.