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16
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5. Troubleshooting
Failure
Main cause
Measures
Operation is not
smooth.
1. Insufficient lubrication
- Drain and other lubricants may wash away grease applied
to the inside of cylinder.
- Disassemble and clean cylinder to remove oils and drain.
Then, apply grease properly.
2. Improper cylinder
mounting position
- Make adjustments to mounting position to avoid
misalignment.
3. Insufficient air pressure
- Supply adequate amount of pressure.
4. Failure of other system
components than cylinder
- Check all the system components one by one in order.
Output is
decreasing.
1. Air leak in piston seal
- Replace cylinder. (CM2Y)
- Replace piston seal. (CA2Y, CQSY, CQ2Y, CG1Y)
2. Air leak in rod seal
- Replace rod seal.
3. Decrease of air pressure
- Secure necessary pressure and review the margin of
pressure source.
4. Insufficient air flow
- Resistance of air passage may have increased due to
deformation and foreign matter. Repair and clean the
passage.
5. Improper cylinder
mounting position
- Mount cylinder in an unforced position.
6.
Deformed moving part of
cylinder
- Replace cylinder. Make adjustments to correct abnormal
load and position at the time of reinstallation.
7. Insufficient lubrication
- See the descriptions of non-smooth operation above.
Piston runs too
fast.
1. No use of speed controller
- Use a speed controller appropriate to the size of cylinder.
2. Lack of fine adjustability of
speed controller
- Choose an adjustable speed controller to secure required
operation speed referring to the graph of flow rate
characteristics, etc.
Piston runs too
slow.
1. Excessively small direction
control valve
- Replace directional control valve with larger one.
2. High resistant system
component
- Make sure to use valve and other components of
appropriate sizes. Be careful not to overlook the sizes of
tubing and fittings. Use proper size components and piping
at exhaust side.
Cylinder
occasionally
stops operating.
1. Very low speed operation
(5mm/s or slower)
- Very low speed operation results in malfunction as it
reduces the difference in pressure between supply and
exhaust sides of cylinder to almost none and reduces a
sealing effect. Use cylinder within the specified range of
operating speed.
2. Failure of other system
components than cylinder
- Check all the system components one by one in order.
Cylinder stops
operating.
1. Damaged piston seal
- Replace cylinder. (CM2Y)
- Replace piston seal. (CA2Y, CQSY, CQ2Y, CG1Y)
2. Failure of other system
components than cylinder
- Check all the system components one by one in order.
3. Insufficient air pressure
- Supply adequate amount of pressure.
Piton rod is
deformed/
damaged.
1. High speed operation
- High speed operation may cause deformation due to
impact force. Use cylinder within the specified range of
operating speed.
2. Influence of abnormal
external force
- Mechanical interferrence, offset load and excessive load
cause a deformation and damage to cylinder. Eliminate
these factors.
