
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X175-75S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø25mm bore and 175mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
A 175 mm stroke that you can pull back to 100 mm on the machine - the MAJ25X175-75S pairs double-acting power with a 75 mm adjustable extend window set by an external stop screw. At 0.5 MPa the bore 25 piston pushes 245.3 N and pulls 206.1 N, rising to 343.4 N at 0.7 MPa. The fixed anti-impact bumper pads soften stroke-end deceleration; they are not an adjustable air cushion - that belongs to the MAC family.
Build quality suits damp lines: a stainless round barrel riveted to aluminium-alloy covers, with a hard-chrome plated rod that shrugs off mild corrosion in washdown-adjacent or outdoor positions. Every MA-series cylinder carries a built-in magnet as standard, so CMSG, DMSG or EMSG reed switches clip on without a special piston. As a planning figure, budget roughly 147 N of usable push at 0.5 MPa - in vertical terms that is about 25 kgf, or around 12 kg lifted with a 2:1 margin.
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X175-75S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 175 mm |
| Acting type | Double acting, adjustable stroke |
| 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 300 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.
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×175 | Stroke length in mm. |
| -75 | Adjustable stroke window (mm the extend stroke can be shortened on site). |
| -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.
At 245 N push and 175 mm of travel, the cylinder sweeps formed cartons off a case-packer infeed without a secondary pusher, and the 75 mm window lets you re-target the park position when carton sizes change.
A sliding reject gate on a bottling line needs about 147 N of working force at 0.5 MPa - well inside this bore 25 output - and the stop screw sets exactly how far the gate opens.
Sliding machine-guard doors weighing up to about 12 kg track smoothly at 30-800 mm/s, with the standard magnet and an EMSG switch confirming closed position.
At 245.3 N push (0.5 MPa) this bore 25 sits between the MAJ20 (157.0 N) and the MAJ32 (402.2 N); step up if your tooling mass or friction load climbs. The stop screw is a mechanical end stop for the extend stroke only - it will not hold a load mid-stroke, and the piston drifts if air is lost. Mount with the FA flange or LB foot, add an I or Y knuckle on the rod, and feed it through the 1/8" port at 0.15-1.0 MPa (22-145 psi), 30-800 mm/s. With 175 mm of rod out, guide side loads externally; the bushing is not a side-load bearing.
Quick checklist
At 0.5 MPa it pushes 245.3 N and pulls 206.1 N; at 0.7 MPa the figures are 343.4 N push and 288.5 N pull. Theoretical maximum is 50 kgf at 1.0 MPa. The extend stroke is adjustable over 75 mm, air supply is 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s, port 1/8", rod 10 mm with M10x1.25 male thread.
No. AirTAC builds the piston magnet into every MA-series cylinder as standard, so CMSG, DMSG or EMSG magnetic switches clip directly onto the barrel for end-of-stroke or intermediate sensing with no special-order piston.
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