W W Use the Recommended Pneumatic Circuit Caution Operating Precautions Caution �� This is necessary for the correct locking and unlocking actions. Operating Pressure Caution Exhaust Speed Caution Releasing the Lock Warning Head end lock Rod end lock Bore size (mm) 20, 25, 32 40, 50, 63 80, 100 Thread size M2.5 x 0.45 x 25 L or more M3 x 0.5 x 30 L or more M5 x 0.8 x 40 L or more Pulling force 4.9 N 10 N 24.5 N Stroke (mm) 2 3 3 Remove the bolt for normal operation. It can cause lock malfunction or faulty release. Release Lock Locked condition Released condition Manual Release Caution Series MGP With End Lock Specific Product Precautions 1. Do not use 3 position solenoid valves. Avoid use in combination with 3 position solenoid valves (especially closed center metal seal types). If pressure is trapped in the port on the lock mechanism side, the cylinder cannot be locked. Furthermore, even after being locked, the lock may be released after some time, due to air leaking from the solenoid valve and entering the cylinder. 2. Back pressure is required when releasing the lock. Before starting operation, be sure to control the system so that air is supplied to the side without the lock mechanism as shown in the figure above. There is a possibility that the lock may not be released. (Refer to the section on releasing the lock.) 3. Release the lock when mounting or adjusting the cylinder. If mounting or other work is performed when the cylinder is locked, the lock unit may be damaged. 4. Operate with a load ratio of 50% or less. If the load ratio exceeds 50%, this may cause problems such as failure of the lock to release, or damage to the lock unit. 5. Do not operate multiple cylinders in synchronization. Avoid applications in which two or more end lock cylinders are synchronized to move one workpiece, as one of the cylinder locks may not be able to release when required. 6. Use a speed controller with meter-out control. Lock cannot be released occasionally by meter-in control. 7. Be sure to operate completely to the cylinder stroke end on the side with the lock. If the cylinder piston does not reach the end of the stroke, locking and unlocking may not be possible. 8. Do not use an air cylinder as an air-hydro cylinder. This will cause leakage of hydraulic fluid. 9. Adjust an auto switch's position so that it operates for movement to both the stroke and backlash (2 mm) positions. When a 2-color indication auto switch is adjusted for green indication at the stroke end, it may change to red for the backlash return, but this is not abnormal. 1. Supply air pressure of 0.15 MPa or higher to the port on the side that has the lock mechanism, as it is necessary for disengaging the lock. 1. When the pressure on the side with the lock mechanism drops to 0.05 MPa or below, the lock engages automatically. If the piping on the side with the lock mechanism is thin and long, or if the speed controller is away from the cylinder port, the lock engagement may take some due to decline of the exhaust speed. The same result will be caused by clogging of the silencer installed at the EXH port of the solenoid valve. 1. Before releasing the lock, be sure to supply air to the side without the lock mechanism, so that there is no load applied to the lock mechanism when it is released. (Refer to the Recommended pneumatic circuits.) If the lock is released when the port on the other side is in an exhaust state, and with a load applied to the lock unit, the lock unit may be subjected to an excessive force and be damaged. Also, it is very dangerous because the piston rod will be rushed to move. 1. Manual release (Non-lock type) Insert the accessory bolt from the top of the rubber cap (it is not necessary to remove the rubber cap), and after screwing it into the lock piston, pull it to release the lock. If you stop pulling the bolt, the lock will return to an operational state. Thread sizes, pulling forces and strokes are as shown below. 2. Manual release, Lock type While pushing the M/O knob, turn it 90° counterclockwise. The lock is released (and remains in a released state) by aligning the �� mark on the cap with the �� OFF mark on the M/O knob. When locking is desired, turn M/O button clockwise 90° while pushing fully, correspond �� on cap and �� ON mark on M/O button. The correct position is confirmed by a click sound “click”. If not confirmed, locking is not done. Be sure to read before handling. Refer to front matter 39 for Safety Instructions and pages 3 to 12 for Actuator and Auto Switch Precautions. 389 MGJ MGP -Z MGP MGPW MGQ MGG MGC MGF MGZ MGT D-�ｮ -X�ｮ