
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X250-10S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø32mm bore and 250mm 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.
A compact pusher for the 250 mm travel band: the MACJ32X250-10S is double-acting, carries an adjustable extend stroke and a variable air cushion at both ends. Its stainless round barrel is rolled onto aluminium-alloy covers, a riveted build that shrugs off washdown and damp shop air far better than painted-steel minis. At 0.5 MPa it pushes 402 N and pulls 345.6 N; at 0.7 MPa the push climbs to 563 N.
Derate to about 241 N of usable force at 0.5 MPa and this bore will lift roughly 20 kg vertically once the theoretical 41 kgf is halved for margin. The 10 mm window trims the extend stroke on site with a stop screw - shorten only, never lengthen past the ordered 250 mm - and note the adjuster is a mechanical stop, so the rod still drifts if air is lost. Every unit ships with a built-in magnet, so CMSG, DMSG or EMSG switches mount without a special-order piston.
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X250-10S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 250 mm |
| Acting type | Double acting, 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 500 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 | 402 N | 346 N |
| 0.7 MPa | 563 N | 484 N |
| Max (@1.0 MPa) | 82 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 32 | Bore size in mm. |
| ×250 | 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 (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.
250 mm of throw swings a diverter gate between two lanes; the 10 mm window fine-trims the park position so gates seat flush without re-drilling brackets.
Raises bottle cages of around 20 kg through a washdown rinse station; the stainless barrel and chrome rod shrug off daily wet-down that rusts painted minis.
Halts pallets at a repeatable point with 402 N of push behind it; the built-in magnet feeds a CMSG switch to confirm the extended position.
Size from both directions: the MACJ25 pushes 245 N at 0.5 MPa for lighter duties, while the MACJ40 delivers 628 N when loads grow. Over 250 mm of travel, keep side loads off the 12 mm rod or guide the load externally to avoid bending. Mounting is via FA flange or LB foot, with I and Y rod knuckles for pivots. If your job needs position holding, add a valve circuit - the adjuster only limits travel. For fixed-stroke work, compare the MAC32; for a second rod, the MACD.
Quick checklist
At 0.5 MPa: 402 N push and 345.6 N pull. At 0.7 MPa: 563 N push and 483.8 N pull. Theoretical maximum is 82 kgf at 1.0 MPa. Operating range is 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof, and speed runs 30-800 mm/s.
The external stop screw shortens extend travel anywhere inside the 10 mm window; it cannot lengthen the stroke beyond the ordered 250 mm. It is an end stop, not a mid-stroke lock - the piston can drift on air loss, so use a valve where holding matters. A variable air cushion at each end damps the trimmed stop softly.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
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