Brochure

Mounting Storage
Warning Caution
Maintenance
Caution
Shock Absorber Replacement Period
Caution
S: Shock absorber’s stroke
(Catalogue values)
Stopper nut
S
a
6. Adjust the stopping time by using a stopper nut.
Control the stopping time of the impacting material by turning
the stopper nut in or out (thus changing length “a”). After estab-
lishing the stopper nut position, use a hexagon nut to secure
the stopper nut in place.
Capacity of shock absorbers deteriorate in accordance with
usage. When crashing sounds or vibrations are generated
during the operation, adjust the stopper nut and make the
effective stroke (a) longer, or give the stroke enough leeway
beforehand.
1. Confirm that the mounting nut is not loosen.
The shock absorber could be damaged if used in a loosen
state.
2. Pay attention to any abnormal impact sounds or
vibrations.
If impact sounds or vibrations become abnormally high, the
shock absorber may reach the end of its service life. Replace
the shock absorber. If using continuously in such a state,
equipment could be damaged.
3. Confirm that there is no oil leak on the outer surface.
When a large amount of oil is leaking, replace the product,
because it is believed to be happening something wrong with
it. If using continuously in such a state, equipment could be
damaged.
4. Check for cracks and wear in caps.
For shock absorbers with caps, the caps will wear out first.
Replace caps early to prevent damage to colliding objects.
1. Position of the piston rod during storage
If the product is stored for an extended period (30 days or
more) with the piston rod pushed, the absorption capacity
could decrease. Avoid this kind of storage condition.
1. The cylinder, eguipment and/or workpieces might
be destroyed if the table collides the end of the
stroke without being buffered properly by the
shock absorber.
Check the conditions periodically and adjust or
replace the shock absorber, if necessary. About 3
million cycles are possible within the catalogue
usage range (model selection graph range), so
check the condition after 1.5 million cycles for the
RJ06 (room temperature: 20 to 25°C). Maximum
operating cycles of 10 million is confirmed under
our in-house conditions (room temperature: 20 to
25°C, impact load factor 50%, linear cylinder
collision), so by making a size selection with much
leeway, long operational life will be possible.
Series RJ
Specific Product Precautions 3
Be sure to read this before handling. Refer to the back cover for Safety Instructions,
“Handling Precautions for SMC Products” (M-E03-3) for Common Precautions.
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