
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X200-75S 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.
The widest on-site tuning range in this bore belongs to the MAJ25X200-75S: a 75 mm trim band that suits lines where product heights change between shifts. The cylinder is double-acting with air on both faces; at 0.5 MPa the 25 mm bore generates 245 N of push, about 25 kgf, and at 0.7 MPa that climbs to 343 N.
Construction follows AirTAC's mini recipe: a stainless-steel tube rolled onto aluminium covers with a stainless block, plus a hard-chromed carbon-steel rod that resists scoring in dusty workshops. Fixed anti-impact pads cushion both ends of travel - they decelerate the piston but are not an adjustable air cushion like the MACJ offers. Because the magnet is built in at the factory, position sensing with a CMSG, DMSG or EMSG switch costs nothing extra. Budget around 147 N for real work at 0.5 MPa, or about 12 kg of vertical lift with a 2:1 margin.
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X200-75S |
|---|---|
| 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. |
| -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.
When filling nozzles swap between bottle formats, the 75 mm window re-zeros the extend position in minutes, with 245 N push at 0.5 MPa reseating the stop firmly.
Pushing plastic totes onto a gravity spur needs repeatable mid-range force; about 147 N of usable push moves loaded totes without slamming them.
The bumper-padded stroke end squares corrugated cases gently before the taping head, and the stainless barrel copes with the humid air around tape applicators.
Drop to bore 20 for 157 N at 0.5 MPa or rise to bore 32 for 402 N - the 25 mm bore sits mid-table for force and stays compact. The 75 mm window is trimmed via the external stop screw, which shortens the 200 mm extend stroke only; it is an end stop, not a mid-stroke lock, so a suspended load still sinks if air is lost and must be carried by other means. The 200 mm stroke benefits from external guiding against side loads. Choose FA flange or LB foot mounting and I or Y rod knuckles as the fixture demands.
Quick checklist
Push is 245.3 N and pull 206.1 N at 0.5 MPa; at 0.7 MPa expect 343.4 N push and 288.5 N pull, with a 50 kgf theoretical maximum at 1.0 MPa. Speed runs 30-800 mm/s across a 0.15-1.0 MPa (22-145 psi) supply, with 1.5 MPa (215 psi) as proof pressure.
It cannot. The stop screw sets where the extend stroke finishes - a mechanical end stop, nothing more. If air pressure drops, the rod still moves freely, so any load needs its own mechanical support. What the cylinder does include as standard is a magnet for CMSG, DMSG or EMSG switches plus fixed bumper pads that soften the arrival impact.
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Covers non-human-caused product damage.
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