FESTO DYSS Shock Absorber Instruction Manual

FESTO DYSS Shock Absorber

Translation of the original instructions  2021 all rights reserved to Festo SE & Co. KG

Applicable documents

All available documents for the product è www.festo.com/sp.

These operating instructions do not apply to the product variant DYSS-G8. Separate operating instructions are available for the product variant DYSS-G8.

Safety

Safety instructions

•  Only use the product in its original status without unauthorized modifications.
•  Observe the labeling on the product.
•  Before working on the product, switch off the power supply and secure it against being switched on again.

Intended use
The product is intended for use for cushioning the force of linear moving masses. The product is not suitable for rotary drives and for use in damp environments.

Training of qualified personnel
Work on the product may only be carried out by qualified personnel who can evaluate the work and detect dangers. Personnel must have the relevant mechanical training.

Additional information

•  Contact the regional Festo contact if you have technical problems at www.festo.com.
•  Accessories and spare parts è www.festo.com/catalogue.

Product Overview

The screw in the internal hexagon socket of the shock absorber must not be loosened.

NOTICE
Tensile forces on the piston rod can seriously damage the shock absorber.

Function
The hydraulic shock absorber has the following characteristics:

•  position-controlled flow control function
•  fixed stop on housing Force applied to the piston rod causes the piston rod to move to the fixed stop. The internal return spring moves the piston rod back to its initial position.

Transport and storage
Store the product in a cool, dry environment protected from UV and corrosion. Keep storage times short.

Assembly

Mounting options:

•  in through-hole
•  in through thread When mounting in the hole
  1.  Insert the product into the desired stop position.
  2.  Secure the product with lock nuts. Tighten the lock nuts with tightening torque.

1. Screw the product into the desired stop position.
2. Do not exceed the maximum torque when screwing or holding the internal hexagon socket/slot.
3. Tighten the lock nut to the tightening torque.

Align product

•  Observe the maximum deviation of the direction of force from the shock absorber axis.
•  The mass must meet the piston rod and the fixed stop over a wide area.

Commissioning Executing test run

1.  Start the test run at the drive with reduced speed.

2.  If necessary, readjust the position of the shock absorber.

3.  Gradually increase the speed of the drive in steps to the operating value. If set correctly, the end position is reached without a hard stop.
   With hard stop:

   • If necessary, reduce impact speed.
   •  Check the function and design of the shock absorber.

Notes on operation

• Only use shock absorbers within the permissible range from 25% to 100% o the maximum energy absorption è 11 Technical data. Recommendation: use shock absorbers within the optimum range from 50% to 80% of the maximum energy absorption.

Cushioning effect
The viscosity of the hydraulic fluid declines over the operating life due to the generated friction heat. This can reduce the cushioning effect.

Maintenance

Malfunctions

Repair
The shock absorber cannot be repaired. The hydraulic fluid in the shock absorber cannot be topped up.

Dismantling and disposal
The product contains pressurized hydraulic fluid that can escape in an uncontrolled manner if the housing is damaged. The hydraulic fluid can injure people’s eyes and skin and damage the environment.

Technical data

1.  At higher temperatures in the range of 80 °C, the maximum mass will be reduced by approximately 50%.
2.  For energy utilization from 70 % per stroke.
3.  At temperatures below 0 °C, the reset time can increase to 1 s. The reset time may increase during continuous actuation in the end position.
4. At higher temperatures in the range of 80 °C the maximum mass will be reduced by approximately 50%.
5. For energy utilization from 70 % per stroke.
6. At temperatures below 0 °C, the reset time can increase to 1 s. The reset time may increase during continuous actuation in the end position.

References

• Country Selection | Festo
• Country Selection | Festo

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