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BHD Hydraulic Buffers Heavy-Duty Series

Overview

BHD Air-bag-like heay-duty Hydraulic Buffers, use the world advanced air bag restoration design. Enlarge the energy absorption performance and working stroke (energy absorption to 900KJ/C, stroke to 1500mm). Use new bladder design instead of traditional spring to restore, it shortened the total length of Hydraulic Buffers and the compression ratio when bladder completely pressed. It makes sure BHD products have lower peak damping force and lower restoration characteristic. BHD bladder designed heavy duty buffers is the global leading technology, provide the complete models and specifications. It is general used in all heavy industrial area, especially leading solutions for stacking machine in automatic warehousing 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, hydraulic oil that extruded from orifices reduce the volume of bladders; when it returning, compressed bladders expanded, hydraulic oil goes to the shock tube, thus piston rod restored.

Performance and Advantages:

1. Compact design, wide range of applications; safely and smoothly down for long stroke models, best energy absorption reached to 900KJ/C
2. BHD series is the customized products, special design for multiple orifices per different working 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. Impact velocity range: 6m/s, maximum impacted cycle times is 60 times/hour
5. Nitrogen Gas bladders design for piston rod restoration purpose, resilience force is small.
6. Special epoxy painted cylinders and high quality chrome plated piston rod has good causticity to endure bad outside working condition  
7. More accessories can be selected: including Bellows, U clamp, safety chain and sensors for piston rod restoration.
8. Special seal material and unique hydraulic oil, the standard temperature range from (-10℃~60℃) extended to(-35℃~100℃).
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. BHD Hydraulic Buffers 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.
4. If you need the signal that shows piston rod completely returned or not, we recommend install safety sensor.

Parameters
 
Model
Stroke
(mm)
S
Max.Energy Range/Cycle
(Nm/C)
ET
Cylinder Diameter
  (mm)   
   C 
Page
BHD1.5*(Stroke)
50-600
3200-14200
90
25
BHD2.0*(Stroke)
250-1400
14400-41650
110
26
BHD3.0*(Stroke)
50-1422
9600-4170294
130
27
BHD3.5*(Stroke)
50-1200
13000-182750
155
28
BHD4.0*(Stroke)
50-1200
15100-271600
200
29
BHD5.0*(Stroke)
100-1200
46700-467000
215
30
BHD6.0*(Stroke)
100-1200
76500-805000
275
31