The AirTAC AirTAC MA25X400SCM Mini Cylinder 25x400 CM Cover PT is a genuine double acting standard round-body mini air cylinder with a Ø25mm bore and 400mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
A 400 mm stroke on the 25 mm MA frame delivers a long-reach double acting cylinder that pushes 245.3 N at 0.5 MPa and 343.4 N at 0.7 MPa, with air driving the rod in both directions. Fixed anti-impact bumper pads ease the shock at each end of travel - a deceleration pad, not an adjustable cushion. The trailing CM code selects the round-end back cover, closing the body without a pivot lug so the cylinder sits flush in tight assemblies. In practical terms, plan on about 147 N of usable work from the 245.3 N rating at 0.5 MPa once a sensible margin is applied, which covers roughly 25 kg of vertical lift at full pressure or about 12 kg at a 2:1 safety factor. The riveted round body pairs a stainless-steel barrel with a 20 um hard-chrome plated rod, an honest advantage over painted minis in damp, dusty or lightly washed-down corners. A magnet is built in as standard, so CMSG, DMSG or EMSG switches mount straight onto the barrel.
| Model | AirTAC MA25X400SCM Mini Cylinder 25x400 CM Cover PT |
|---|---|
| Series | MA mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 400 mm |
| Acting type | Double acting |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Fixed anti-impact bumper pads |
| Max standard stroke | Up to 500 mm |
Specifications follow the official AirTAC MA-series datasheet. Barrel: stainless-steel tube (round-body, riveted rolling-packed construction); piston rod: carbon steel with 20µm hard-chrome plating; covers: aluminium alloy. Thread options: PT (blank) / G / NPT. Every MA-series cylinder ships with a built-in magnet for CMSG / DMSG / EMSG position sensors.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| MA | Standard round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×400 | Stroke length in mm. |
| -S | Built-in magnet for CMSG / DMSG / EMSG sensors (standard on MA series). |
| CA / U / CM | Back-cover type: CA pivot, U flat-end, CM round-end. |
MA-family variants: MA / MAC (double acting ±cushion), MSA / MTA (single acting push / pull), MAD / MACD (double rod ±cushion), MAJ / MACJ (adjustable stroke ±cushion), MAR (cushioned with integrated F/U mount). Mounting accessories: FA flange, LB foot, SDB pivot; plus I and Y knuckles. Thread PT (blank) / G / NPT.
Raises a 10 to 12 kg reject paddle out of a bottling line conveyor path on the 245.3 N push at 0.5 MPa, with the CM round-end cover letting the body tuck under the guard rail.
Opens and closes a sliding access panel on a CNC machine guard, where the 400 mm stroke covers the full travel and the built-in magnet feeds position signal to the interlock via a CMSG switch.
Stops and releases pallets on a roller conveyor leg, using about 147 N of working force at 0.5 MPa and LB foot mounting for a straight bolt-down frame.
At 245.3 N push at 0.5 MPa, this 25 mm bore sits between the MA20 class (157.0 N) and the MA32 class (402.2 N); move down for light slides, up if friction or lifted mass climbs. Size the job against about 147 N of working force rather than the raw figure. As with any double acting MA, the piston is free to drift when air is removed, so a pilot check valve or rod lock is the answer where a 400 mm stroke has to stay parked. The long 10 mm rod deserves real guiding: side loads over 400 mm of travel chew seals and bend rods, so add a stop block or external guides for speeds up to 800 mm/s. Mount with FA flange or LB foot brackets, an SDB pivot, or I/Y knuckles, and note the port is 1/8 PT with an M10x1.25 male rod thread.
Quick checklist
At 0.5 MPa it pushes 245.3 N and pulls 206.1 N; at 0.7 MPa it pushes 343.4 N and pulls 288.5 N. The theoretical maximum is 50.0 kgf at 1.0 MPa. Operating range is 0.15-1.0 MPa (22-145 psi) with proof pressure 1.5 MPa (215 psi), air filtered to 40 um, rod speed 30-800 mm/s and a working temperature of -20 to +70 C.
Yes - the magnet is built in as standard equipment on every MA-series cylinder, not an ordered option, so CMSG, DMSG or EMSG reed and hall-effect switches snap onto the stainless barrel anywhere along the 400 mm stroke for end-of-travel or mid-position signals without modifying the piston.
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