
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X200-30S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø25mm bore and 200mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
A 30 mm window splits the difference between coarse and fine adjustment, and the MAJ25X200-30S applies it to a 200 mm extend stroke with one external screw. The 25 mm bore produces 245.3 N at 0.5 MPa and 343.4 N at 0.7 MPa; sizing work at roughly 147 N leaves headroom, about a 12 kg vertical lift at a 2:1 margin.
Because the barrel is stainless and the rod carries a 20 um hard-chrome plating, the cylinder tolerates humid plants and occasional hose-down that would blister painted minis. Riveted aluminium covers keep the round body compact in tight frames. Stroke ends hit fixed anti-impact bumpers, and the standard magnet accepts CMSG, DMSG or EMSG position switches out of the box.
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X200-30S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 200 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. |
| ×200 | Stroke length in mm. |
| -30 | 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.
Advances thermoformed sheet into a cutting nest; the 30 mm trim aligns the feed stop when sheet sizes change on the former.
Seats connectors into a burn-in socket with 245.3 N of push; engineers retune the stop depth for each new shell style.
Ejects stamped brass washers from a small die; the extend end is set anywhere between 170 and 200 mm to suit die changes.
If 245.3 N at 0.5 MPa feels thin, the 32 mm bore offers 402.2 N; if generous, the 20 mm bore at 157 N is the leaner pick. Work within 0.15-1.0 MPa (22-145 psi) and 30-800 mm/s. The adjuster caps extend travel only - it will not catch a falling or drifting piston when air pressure is lost, so fit an external brake where that matters.
Mount on an FA flange or LB foot and fit I or Y knuckles if the load swings. Long 200 mm strokes amplify rod bending, so payload guides should carry side loads rather than the 10 mm rod.
Quick checklist
245.3 N push and 206.1 N pull at 0.5 MPa; 343.4 N push and 288.5 N pull at 0.7 MPa; 50.0 kgf theoretical maximum at 1.0 MPa. Speeds from 30-800 mm/s are supported with 1/8" ports.
Yes - the magnet is standard in the piston, so CMSG, DMSG and EMSG switches mount directly for extend and retract signals. The 1/8" ports and M10x1.25 male rod thread keep piping and tooling simple.
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