
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X75-75S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø25mm bore and 75mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
With a trim window as wide as the stroke itself, the MAJ25X75-75S can be set anywhere from near-zero to full 75 mm extend travel using its external stop screw - one part number covers an entire family of stroke lengths. Expect 245.3 N push and 206.1 N pull at 0.5 MPa from the 25 mm bore, and budget around 147 N for the actual job at 0.5 MPa so the cylinder is never run at its ceiling.
Body construction follows the MA standard: a riveted stainless-steel round barrel, aluminium-alloy end covers, and a hard-chrome 10 mm carbon-steel rod. Fixed anti-impact pads decelerate the piston at both stroke ends, and since the magnet is built in as standard, CMSG / DMSG / EMSG switches bolt on whenever position confirmation is needed. Full stroke lift capacity works out to about 13 kg vertically with a 2:1 margin.
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X75-75S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 75 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. |
| ×75 | 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.
One cylinder serves many jig variants in a prototype cell because the stop screw re-cuts the stroke per setup; a CMSG switch confirms the new stroke length each run.
Lowers a small interlocked access lid; about 13 kg vertical lift capability with margin covers most aluminum guard lids and the stainless body tolerates coolant mist.
Kept as a workshop spare for mini cylinder swaps - the adjustable window lets it replace various fixed-stroke 25 mm units on conveyors, clamps and lifts without waiting on a custom order.
This is the flexibility pick: if your stroke requirement may change during commissioning, the full-width 75 mm window beats ordering several fixed-stroke MA cylinders (which otherwise span 157 N at 20 mm to 402.2 N at 32 mm bore - this 25 mm sits between). Air connection is 1/8 inch, rod thread M10x1.25. FA flange or LB foot mounts attach to machine plates; I / Y knuckles suit linkages. Two cautions: the stop screw cannot lengthen travel beyond 75 mm, and it is an end stop only - it will not clamp or hold a load if air pressure is lost.
Quick checklist
MAJ25X75-75S: 25 mm bore, 75 mm stroke, adjustable extend window 75 mm (the full stroke). Double-acting forces: push 245.3 N, pull 206.1 N at 0.5 MPa; push 343.4 N, pull 288.5 N at 0.7 MPa; theoretical maximum 50 kgf at 1.0 MPa. Pressure 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s, 1/8 inch port, rod thread M10x1.25, 10 mm rod.
Mounting: FA flange, LB foot, plus I and Y rod knuckles for linkage-type tooling; the round riveted body keeps the installed footprint small either way. Sensing: the magnet is included in every piston as a standard feature, so CMSG, DMSG and EMSG switches mount directly on the stainless barrel for end-of-stroke or trimmed-position signals - no special-order version is needed.
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