
The AirTAC MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X100-10S is a genuine double acting, double rod, adjustable stroke + cushion standard round-body mini air cylinder with a Ø25mm bore and 100mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service. A variable air cushion at both ends lets you tune end-of-stroke deceleration on site.
Double-acting on both strokes and cushioned at both heads, the MACJ25X100-10S pairs a 100 mm standard stroke with a 10 mm trim window for fine end-position matching on the machine. At 0.5 MPa the 25 mm bore generates 245 N forward and 206 N back; at 0.7 MPa push reaches 343 N, with about 50 kgf available theoretically.
The riveted stainless barrel and hard-chrome plated rod resist corrosion in damp or washed-down areas, an edge painted minis cannot match. Should you need the same force from both rod ends, the MACD double-rod variant shares this platform.
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X100-10S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 100 mm |
| Acting type | Double acting, double rod, adjustable stroke + cushion |
| 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 | Variable air cushion, both ends |
| 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 | Force (both ways) |
|---|---|
| 0.5 MPa | 206 N |
| 0.7 MPa | 289 N |
| Max (@1.0 MPa) | 42 kgf |
MAJ / MACJ are double-rod: the rear rod that carries the stroke adjuster exits the rear cover, so both piston faces lose rod area. The rod-side (annular) area is used for both directions (conservative).
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×100 | Stroke length in mm. |
| -10 | 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 (double rod, 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.
With about 12.5 kg of safe vertical equivalent, the bore raises fixture plates smoothly; end cushions keep the jig from bouncing at the top stop.
Around 147 N of dependable clamp force at 0.5 MPa holds aluminum fittings against milling loads, while the stainless barrel tolerates coolant spray.
Bore 20 yields 157 N at 0.5 MPa while bore 32 starts at 402 N, so this 25 mm model covers the middle ground where most mini clamping and pressing falls. The 10 mm stop screw sets the extend limit mechanically - it is not a mid-stroke lock, and the rod will still drift if pressure is lost, so add valving where hold matters. Bolt it on with an FA flange, an LB foot or I / Y rod knuckles; the built-in magnet works with CMSG, DMSG and EMSG sensors with no special-order piston.
Quick checklist
Theoretical maximum about 50 kgf. Pressure 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-800 mm/s, 1/8" port, M10x1.25 rod thread, extend stroke trimmed by up to 10 mm.
The stop screw shortens the extend stroke by up to 10 mm - it trims only, never extends past the ordered 100 mm, and it sets position rather than holding load. The piston magnet fitted as standard lets CMSG, DMSG or EMSG switches report end positions to your PLC.
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Covers non-human-caused product damage.
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