Festo YSRWJ-7-10-A Manual

Festo Ikke kategoriseret YSRWJ-7-10-A

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Side 1/3
YSRWJ
Stop element
Festo SE & Co. KG
Ruiter Straße 82
73734 Esslingen
Deutschland
+49 711 347-0
Operating instructions
8158274
2021-09b
[8158276]
Translation of the original instructions
© 2021 all rights reserved to Festo SE & Co. KG
1
Applicable Documents
All available documents for the product
è
www.festo.com/sp.
2 Safety
2.1 Safety instructions
–
Only use the product in its original condition without unauthorised modifica-
tions.
–
Observe the identifications on the product.
–
Store the product in a cool, dry environment protected from UV and corrosion.
Keep storage times short.
–
Before working on the product, switch off the power supply and secure it
against being switched on again.
2.2 Intended use
The product is intended for use in cushioning the force of linear moving masses in
an axial direction.
The product is not suitable for rotary drives and for use in damp environments.
2.3 Training of qualified personnel
Work on the product may only be carried out by qualified personnel who can eval-
uate the work and detect dangers. Personnel must have the relevant mechanical
training.
3
Additional information
–Contact the regional Festo contact if you have technical problems
è
www.festo.com.
–Accessories and spare parts
è
www.festo.com/catalogue.
4
Product overview
4.1 Product design
1
3
4
9
5
6
7
8
2
Fig. 1:
Product design
1
Shock absorber
2
Spanner flat
3
Nut for securing the shock
absorber
4
Slot for proximity switch
(optional)
5
Rubber buffer (YSRWJ-7/8 only)
6
Stop plunger
7
Male thread for mounting and
positioning
8
Lock nut (2x)
9
Cross-hole nut for precision posi-
tion adjustment
4.2 Function
Insertion force F2 acting on the limit plunger moves the piston rod of the hydraulic
shock absorber through the cushioning length s to the end position.
When the piston rod is retracted, the hydraulic fluid in the shock absorber flows
through a path-dependent flow control valve and cushions the motion.
If the insertion force is less than the reset force F1 of the internal compression
spring, the stop plunger returns to the initial position.
F1 Reset force
F2 Insertion force
s Stroke/cushioning distance
Tab. 1: Function
The ring magnet is located on the stop plunger. The magnet enables end-position
sensing by an optional proximity switch.
10 1
Fig. 2: Internal product design
1
Shock absorber
10
Ring magnet
5 Mounting product
Mounting options:
–in through-hole
–
in through thread
Mounting in drilled hole
Lock nut mounting, at both ends
The lock nuts must not protrude beyond the threaded area.
Tab. 2:
Mounting in drilled hole
1.
Insert the product up to the intended stop position.
When positioning, observe the maximum dimension x.
2.
Secure the product with lock nuts. Tighten the lock nuts to the tightening
torque.
Mounting in thread
Lock nut mounting on one side
The lock nut must not protrude beyond the
threaded area.
The mounting surface must not protrude beyond
the thread area.
Tab. 3:
Mounting in thread
1.
Screw in the product up to the intended stop position.
When positioning, observe the maximum dimension x.
2.
Tighten the lock nut to the tightening torque.
Size 5 7 8
Dimension x [mm] 15 20 20£ £ £
Lock nut
Tightening torque
[Nm] 2 3 5
Tolerance ± 20%
Tab. 4:
Dimension x and tightening torques
Adjusting product
Fig. 3: Loosen lock nut
1. Position the mass to be cushioned at the intended end position.
2. Loosen the lock nut on the side of the cross-hole nut.
3. Adjust the position of the stop element in accordance with the mounting.
When mounting in drilled hole When mounting in thread
Turn the loaded lock nut in the desired direc-
tion. If necessary, hold the stop element
against the cross-hole nut.
Turn the cross-hole nut in the desired direc-
tion.
One revolution corresponds to approx. 1 mm stroke change.
4.
Fix the position of the stop element. At the same time, tighten the lock nut on
the side of the cross-hole nut.
5.1
Mounting
5.2 Aligning product
–Observe the axial direction of force of the moving mass to the axis of the shock
absorber.
–The mass must contact the piston rod over a wide area.
Force direction, max. deviation Alignment of the mass
Tab. 5:
Permissible axial force direction and alignment of the moving mass
5.3 Mounting accessories
Mounting optional proximity switch
4
12
Fig. 4:
Mounting proximity switches
4
Slot for proximity switch
12
Proximity switch (optional)
•
Place the proximity switch in the slot and fasten it in accordance with the end
position of the shock absorber.
6 Commissioning
6.1 Executing test run
1.
Start the test run at the drive at reduced velocity.
2. If necessary, readjust the position of the stop element.
3.
Gradually increase the velocity of the drive to the operating value in steps.
Ä
If set correctly, the end position is reached without a hard stop.
With hard stop:
–Reduce the impact velocity if necessary.
–Check function and design of the stop element.
6.2 Notes on operation
Energy absorption
• Only use the shock absorber within the permissible range of 25% to 100% of
the maximum energy absorption
è
10 Technical data.
Recommendation: use the shock absorber within the optimum range from
50% to 80% of the maximum energy absorption.
Energy absorption Note
0 … 25% Unfavourable; fluid leakage at the shock absorber may be
increased
25 … 50% Permitted
50 … 80% Optimal
80 … 100% Permitted
> 100% Impermissible
Tab. 6:
Energy absorption of the shock absorber
Cushioning effect
The viscosity of the hydraulic fluid declines over its operating life due to the
generated friction heat. This can reduce the cushioning effect.
7 Maintenance
Maintenance interval Maintenance work
Every 2 million load changes Check shock absorber:
–sealing, no fluid leakage
–Cushioning distance s
è
10 Technical data
In case of leakage, hard stop or cushioning distance too short:
replace shock absorber.
Every 5 million load changes Replace rubber buffer.
Every 10 million load changes Replace shock absorber.
Tab. 7: Maintenance schedule
The hydraulic fluid in the shock absorber cannot be topped up or changed.
The shock absorber cannot be repaired.
7.1
Replacing shock absorber
123116
Fig. 5:
Replacing shock absorber
1
Shock absorber
2
Spanner flat
3
Nut for securing the shock absorber
6
Stop plunger
11
Connecting clip
1.
Release the load on the stop plunger .6
2.
Loosen the nut on the shock absorber.3
3.
Unscrew the shock absorber, if necessary with a tool on the spanner flat.
4.
If the connecting clip was removed with the shock absorber, press theaA
connecting clip on the new shock absorber.
5.
Screw in the new shock absorber to the stop.
6.
Tighten the nut to the tightening torque.3
Size 5 7 8
Nut 3
Tightening torque
[Nm] 2 3 5
Tolerance ± 20%
7.
Actuate the stop plunger slowly until it reaches the end position and then
release the load.
Ä
The connecting clip clicks into place.
8
Fault clearance
Malfunction Possible cause Remedy
Leakage/fluid leakage Shock absorber faulty Replace shock absorber.
Noisy impact at the start of the
stroke
Rubber buffer worn Replace rubber buffer
(YSRWJ-7/8 only).
Hard stop in the end position Stop element overloaded Reduce impact velocity or
check the layout of the stop
element.
Shock absorber faulty Replace shock absorber.
Malfunction during position
sensing
Incorrect position of proximity
switches
Correct position of proximity
switches.
Incorrect proximity switch type
used
Only use proximity switches
type SME/SMT-8-...-B.
Proximity switch defective Replace proximity switch.
Ferritic parts in the vicinity of
the proximity switch
Use parts made from non-mag-
netic materials.
Tab. 8:
Fault clearance
9
Dismantling and disposal
CAUTION
The product contains pressurised hydraulic fluid that can escape in an uncon-
trolled manner if the housing is damaged.
The hydraulic fluid can injure people's eyes and skin and damage the environ-
ment.
• Have the product disposed of by a qualified waste disposal company.
• Do not destroy the product in order to drain the hydraulic fluid.

Produkt Specifikationer

Mærke: Festo
Kategori: Ikke kategoriseret
Model: YSRWJ-7-10-A

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