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Information & Precautions

Dampers

Basic Structure and Principles: Rotary Damper
Rotary damper basic structure
This is a rotary damper that utilizes the braking force generated by the oil's viscosity resistence. The braking force generated by oil viscosity, clearance between the rotor and the main body, and the oil’s contact area varies based on the structure shown above.
Temperature characteristics:
Temperature characteristics
The torque of a rotary damper varies according to the ambient temperature. This is because the viscosity of the oil inside the damper changes according to the temperature.
Speed characteristics:Speed characteristics
The braking torque of a rotary damper varies according to the cycle rate. In general, the torque increases when the cycle rate increases, and the torque decreases when the cycle rate decreases. The rated torque listed in the catalog is the torque generated when the cycle rate is 20rpm.
Basic Structure and Principles: Vane Damper
Vane damper basic structure
This is a rotating-type damper that utilizes the oil pressure. The braking force generated by oil viscosity, clearance between the rotor and the main body, and the vane’s pressure-receiving area varies based on the structure shown above.
Temperature characteristics:
Temperature characteristics
Similar to the rotary damper, the torque varies according to the ambient temperature. Its basic structure is a dashpot structure (single orifice). The internal pressure of a damper increases as the ratation speed increases, which consequently increases the torque.
Speed characteristics:Speed characteristics
The braking torque of a vane damper varies according to the cycle rate. In general, the torque increases when the cycle rate increases, and the torque decreases when the cycle rate decreases. The rated torque listed in the catalog is the torque generated when the cycle rate is 20rpm.
Caution!
*Do not operate without sufficient mounting strength
Operating with insufficient mounting strength may damage the main machine and cause injuries. Ensure sufficient mounting strength of load torque x safety factor.
*Do not operate without an external stopper
Use within the damper’s range of operating angle. Do not use the damper itself as a stopper by setting the rotational limit position of the rotating shaft as the resting position of the rotating object. Using the damper itself as a stopper may damage the damper and consequently damage the main machine, and it may also result in injuries.
Set the external stopper to the operating angle before use.
*Do not use when the maximum operating torque is exceeded
Using this product beyond the maximum operating torque may cause an oil leak, reduced durability, and damage to the shaft. This may damage the damper and consequently damage the main machine, and it may also result in injuries. Do not exceed the maximum operating torque when using this product.
*Do not operate outside the operating temperature range
Using this product outside the operating temperature range may cause an oil leak and torque problems. Use this product within the operating temperature range.
*Usage enviornment
This product cannot be used in a vaccum or under high pressure, as this will cause damage to the main machine.
Do not use in an environment where chips, cutting oil, water, etc. can come in contact with the linear damper. This will result in a malfunction due to an oil leak caused by damage.
*Do not discard oil more than is necesssary
Discarding the oil contained in dampers more than is necessary will pollute the environment.
Dispose the oil according to laws concerning waste management and cleaning.
*Radial load to the shaft
Radial load to the shaft
Applying load to the rotating shaft (gear) in a radial direction may cause an oil leak, torque problems, and damage to the shaft
(or to the gear if the gear is used).
*Thrust load to the shaft
Radial load to the shaft
Applying load to the rotating shaft (gear) in a thrust direction may cause an oil leak, torque problems, and damage to the main unit
(or to the gear, or cause the gear to become disengaged, if the gear is used).
Radial load to the shaft
When assembling, attach the damper's gear to the opposing arm (gear) as parallel as possible.
*Using the product above its maximum rotations
Using this product above its maximum rotations may cause an oil leak, torque problems, and damage to the rotating shaft.
Please refer to the catalogue for the product's maximum rotations.
(*If you are going to exceed the maximum rotations when using this product, please contact our sales department.)
*Using the product outside its operating temperature range
Using this product outside the operating temperature range may cause an oil leak and torque problems.
Please refer to the catalogue for the product's operating temperature range.
(*If you are going to use this product outside its operating temperature range, please contact our sales department.)
*Using the product above its maximum cycles
Using this product above its maximum cycles may cause torque down and an oil leak.
Please refer to the catalogue for the product's maximum cycles.
(*If you are going to exceed the maximum rotations when using this product, please contact our sales department.)
Over-tightening of mounting screws
Over-tightening the mounting screws when installing a rotary damper may cause damage to the main unit.
Based on the types and sizes of the screws used, please apply an appropriate tightening torque to tighten the screws.
Bansbach Easylift of North America is not responsible for any secondary accidents caused by a rotary damper.
The user should implement preventative measures against such secondary accidents.