Airtac M5R Roller Lever Mechanical Valve M5R05
Mechanically actuated · no coil, no pilot airThe AirTAC Airtac M5R Roller Lever Mechanical Valve M5R05 is a genuine 5/2-way roller type control valve. A roller lever tripped by a passing cam, slide or carriage. Works from either direction. It is an external control, direct-acting valve - the spool is moved mechanically, so there is nothing to wire and no pilot line to plumb. Ports are M5 with a 2.5 mm2 (Cv 0.14) effective area.
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Specifications
| Model | M5R05 |
|---|---|
| Valve type | 5/2 way, external control, direct acting |
| Actuation | Roller type |
| Reset | Automatic (spring) restoration |
| Body series | Mini type |
| Port size | M5 |
| Effective area | 2.5 mm2 (Cv 0.14) |
| Fluid | Air, filtered by a 40 um element |
|---|---|
| Pressure range | 0 - 1.0 MPa (0 - 145 psi) |
| Proof pressure | 1.5 MPa (215 psi) |
| Temperature | -20 to +70 C |
| Body material | Aluminium alloy |
| Lubrication | Not required |
| Thread standard | PT (Rc tapered) |
| Spool stroke | 2.0-3.0 mm |
| Actuator stroke | 6.0-8.5 mm at the roller |
Sliding-column (spool) construction, so operating force is not affected by working pressure - there is no back-pressure effect. Lubrication is not required, but once the valve has been run on lubricated air it must stay on lubricated air; AirTAC suggests ISO VG32 or equivalent. The roller type control set is METAL, which gives a longer service life than the engineering-plastic heads. The exhaust outlet sits on top of the body, so a silencer fits directly.
About the M5R05
The AirTAC M5R05 is a 5/2-way external control, direct acting valve that changes over when a moving machine part rolls across its lever. There is no solenoid coil and no pilot port anywhere on it - the only thing that throws the spool is a cam, carriage or workpiece striking the roller, and it springs back the moment the roller is released.
This is the mini member of the M5 family, so it takes a compact M5 thread rather than the 1/8 or 1/4 ports of the 110 and 210 bodies, and its orifice gives an effective area of 2.5 mm2 (Cv 0.14). Because the spool is a sliding-column design, the changeover is not affected by working pressure - there is no back-pressure effect pushing back on the roller, so the trip feel stays the same from 0 to 1.0 MPa. The exhaust sits on top of the body, so a silencer screws straight on without re-plumbing.
Typical applications
Pallet divert on a sorting conveyor
Mount the M5R05 beside the rail so the leading edge of each pallet or tote rolls across the lever, sending a 5/2 signal to a compact cylinder that pushes the load onto a side lane. The both-way roller means the valve also re-trips cleanly when the pallet edge passes back over it.
Slide position signal on a drilling unit
Fit the valve along a pneumatic feed slide so the moving head trips the roller at the end of its drilling stroke, reversing a small clamp cylinder without any wiring at the machine. At Cv 0.14 it is sized for the small pilot and signal duties of a compact drilling fixture, not for powering big rams directly.
Guard door interlock signal on a sheet-metal press cabinet
Screw the mini body to the frame so the sliding cabinet door sweeps the roller as it opens, venting and reversing the clamp circuit before an operator can reach in. No electricity is needed at the door, which keeps the wiring loom away from the moving panel.
How to choose
The M5R05 trips in both directions of roller travel, which makes it the right mini choice when the same cam passes the valve on the way out and the way back. If you only want a signal on one pass - say, to switch on the return stroke of a slide and ignore the outbound pass - the M5L05 is the sibling to pick, because its one-directional roller deliberately ignores trips in the wrong direction. The only other mini actuators are the plain plunger M5B05; anything beyond that means stepping up to the common 110 or 210 bodies.
Do mind the reversal stroke: the spool needs 2.0-3.0 mm of travel and the roller lever absorbs 6.0-8.5 mm, so your cam should depress the roller by no more than 8.5 mm at the deepest point. Drive it past that and the valve is damaged - AirTAC states this explicitly. If 2.5 mm2 of flow is too small for your cylinder, the 110 body with a 1/8 port doubles the orifice to 8.0 mm2 (Cv 0.45).
Frequently asked questions
It is a 5/2-way external control, direct acting valve with mechanical roller actuation and an M5 port. Operating pressure is 0-1.0 MPa (0-145 psi), proof pressure 1.5 MPa (215 psi), and fluid temperature -20 to +70 C on filtered air (40 um element). The orifice gives an effective area of 2.5 mm2 (Cv 0.14). The body is aluminium alloy, lubrication is not required, and the same applies across the whole M5 family.
The spool inside travels 2.0-3.0 mm, and the roller lever itself can move through 6.0-8.5 mm. Your cam or workpiece must not push the lever beyond the 8.5 mm limit - exceeding the reversal stroke damages the valve, and AirTAC warns of this explicitly in the datasheet. Shape the cam so it bottoms out on a mechanical stop just past full depression rather than loading the lever itself.