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BHI Hydraulic Shock Absorbers Heavy-Duty Series

Overview

BHI Hydraulic-Pneumatic Heavy-Duty Hydraulic Shock Absorbers, this global advanced damping technology initially used in undercarriage of plane in aerospace, hydraulic oil and nitrogen gas work together to absorb the impact energy. With small volume and high energy’s specialty, wide range used in emergency case of heavy duty safety protection device, especially leading solutions for harbor machinery, hydraulic stop buffers of railway industry.   

 
Energy Absorption Theory

Hydraulic Oil goes through multiple orifices in working, the sticky damping force happened. It makes impact energy converted to heat energy, little nitrogen gas in space can be converted to buffers potential energy; when it returning, compressed nitrogen space expanded, overcome the resistance and make partial intrinsic energy to heat energy.

 
Performance and Advantages

1. Small volume, big energy; in emergency case of heavy duty safety protection area
2. BHI series is the customized products, special design for multiple orifices per different application parameters, it can make the best energy absorption performance.
3. The design meets the standard of OSHA, AISE, CMMA and other rules like DIN and FEM safety regulations
4. In same diameter and same stroke, BHI energy absorption ability is 2 times more than other structures
5. Nitrogen space can realize the decelerating function and piston rod restoration function; the piston rod restoration force in this buffer is much bigger than other models.
6. Special epoxy painted cylinders and high quality chrome plated piston rod has good causticity to endure bad outside working condition  
7. Special seal material and unique hydraulic oil, the standard temperature range from (-10℃~60℃) extended to(-35℃~100℃).
8. More accessories can be selected: including Bellows, safety chain.
9. Customized service, provide special design products per request.

 
Ordering Sample

Application data needed
Moving Body Weight:W (kg)
Impact Velocity:V(m/s)
Driving Force:Fp(N)
Number of buffers in Parallel:n (pcs)
Impact Cycles per hour:a(Cycle/hour)
Others(Such as Temperature,Environment etc.)

Note:
1. BHI Series is customized products, need users’ application data to design correct orifices
2. We recommend install piston rod bellow, if the working condition is dusty or bad, especially for long life cycle requested.
3. If the install location is higher than 2 Meters, we recommend you use Safety-Chain to avoid falling accident.

 
Parameters
 
Model
Stroke
(mm)
S
Max.Energy Range /Cycle
(KJ/C)
ET
Cylinder Diameter
(mm)
Page
BHI65x(Stroke)
50-100
4-8
65
42-44
BHI85x(Stroke)
50-100
8-16
85
42-44
  BHI100x(Stroke)
50-800
10-132
100
42-44
  BHI120x(Stroke)
100-1000
32-260
120
42-44
  BHI130x(Stroke)
250-800
100-270
130
42-44
  BHI150x(Stroke)
115-1000
62-510
150
42-44
  BHI180*(Stroke)
100-1000
80-720
180
43-44