Catalogue Shock Absorber Catalog
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OEM
Adjustable Series Hydraulic Vibration isolators
OEM Series
Overview
line Adjustable Single Orifice Shock Absorbers
Piston Rod
Accumulator
Check Ring
Coil Spring
Piston Head
Adjustment
Knob
Conventional damping allows linear deceleration by providing a constant shock force over the entire stroke. This standard design is the most efficient, meaning it allows the most energy to be absorbed in a given stroke, while providing the lowest shock force. This type of damping is also available in adjustable shock absorbers.
The damping force of an Enidine single orifice shock absorber can be changed by turning the adjustment knob. Maximum damping force is achieved by turning the adjustment knob to eight (8), while minimum damping force is achieved by turning the adjustment knob to zero (0). Turning the adjustment knob causes the adjustment ball to increase or decrease the clearance (orifice area) between the ball and its seat, depending on rotation direction.
The internal structure of an adjustable single orifice shock
absorber is shown above. When force is applied to the
piston rod, the check ball is seated and the cock remains closed.
Enidine Adjustable Multiple Orifice Shock Absorbers
Oil is forced out of the high pressure shock tube chamber through the orifice, creating internal pressure allowing smooth, controlled deceleration of the moving load. When the load is removed, the compressed coil spring moves to reposition the piston head, the check ball unseats, opening the valve that permits rapid piston rod return to the original extended position. The closed cellular foam accumulator compensates for fluid displaced by the piston rod during compression and extension. Without the fluid displacement volume provided by the foam accumulator, the closed system would be hydraulically locked. This type of orifice design results in.
Coil Spring
Check Ring
Adjustment Cam
Adjustment Knob
Orifice Holes
Adjustment Pin
Piston Rod
Effl
Constant orifice area damping (dashpot) provides the largest shock force at the beginning of the stroke when impact velocity is highest. These shock absorbers provide high-energy absorption in a small, economical design. This type of damping is also available in adjustable shock absorbers.
Shock Tube
Piston Head
T
Oil
Turning the adjustment knob rotates the adjustment cam within the shock absorber. The cam, in turn, moves the adjustment pin in the shock tube, closing or opening the orifice holes. By closing the orifice holes, the total orifice area of the shock absorber is reduced, thus increasing the damping force of the shock absorber. The adjustable shock absorber enables the user to change the damping force of the unit, should input conditions change, while still maintaining a conventional-type damping curve. Low velocity range (LR) series configurations are available for controlling velocities that fall below the standard adjustable range.
The adjustable multiple orifice shock absorber is similar to the
Principles described earlier. The check ring replaces the check all and the adjustment feature uses an adjustment pin instead of an adjustment ball. The damping force of the shock absorber can be changed by turning the adjustment knob. Maximum damping force is achieved by turning the adjustment knob to eight (8), while minimum damping force is achieved by turning the adjustment knob to zero (0).
www.enidine.com
Email: industrialsales@enidine.com
Tel.: 1-800-852-8508 ext. 111
Fax: 1-716-662-0406
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