
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X225-100S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø25mm bore and 225mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
A wide 100 mm of on-site tuning is the headline here: the MAJ25X225-100S is double acting, and an external stop screw lets you trim the extend stroke anywhere inside that 100 mm window without swapping the cylinder. At 0.5 MPa the 25 mm bore pushes 245.3 N and pulls 206.1 N, ample for ejecting small castings, closing light gates and similar mid-load work at 30-800 mm/s.
Build quality is where this mini earns its keep. The stainless round barrel carries a hard-chrome plated rod (20 um) that shrugs off mild corrosion and washdown far better than painted-steel minis, while aluminium covers are rolled onto the tube for a sealed, riveted body. For planning margins, count on roughly 147 N of real push at 0.5 MPa - about 60 percent of the raw rating - as the figure to size your mechanism against. A magnet ships as standard, so CMSG, DMSG or EMSG switches mount straight on.
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X225-100S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 225 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. |
| ×225 | Stroke length in mm. |
| -100 | 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.
Opens the discharge gate on a lathe swarf chute, with the 100 mm window letting one cylinder serve several part lengths and bin positions.
Kicks 2 kg cartons off the end of a packaging belt, with the extend stroke trimmed so boxes land square on the takeaway conveyor.
Acts as a screw-trimmed clamp on welding jigs, where the stop screw sets the clamping gap for each fixture variant without shimming.
At 245.3 N push (0.5 MPa) this bore sits between the 20 mm MAJ (157.0 N) and the 32 mm MAJ (402.2 N); step up if your load or friction budget climbs past about 147 N of real work. The 225 mm rod travel is long for a mini, so guide the load externally and keep side force off the 10 mm rod. The stop screw shortens the extend stroke only - it is a mechanical end stop, not a mid-stroke lock, so on air loss the piston still drifts; add a valve or external stop if position must hold. FA flange and LB foot mountings, plus I and Y rod knuckles, cover most fixings, and the standard magnet pairs with CMSG / DMSG / EMSG switches.
Quick checklist
Double acting on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi). At 0.5 MPa it pushes 245.3 N and pulls 206.1 N; at 0.7 MPa, 343.4 N push and 288.5 N pull. Theoretical maximum at 1.0 MPa is 50 kgf. Ports are 1/8", the rod is 10 mm with an M10x1.25 male thread, speed range 30-800 mm/s, and the extend stroke trims within the ordered 100 mm window via the external stop screw.
Fixed anti-impact bumper pads built into the covers soften the last moments of travel at both ends. They decelerate only - they are not an adjustable air cushion, which is the MACJ family's feature. The 100 mm adjuster works separately as a mechanical stop that shortens the extend stroke.
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Covers non-human-caused product damage.
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