
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ32X125-40S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø32mm bore and 125mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
A 40 mm tuning range makes the MAJ32X125-40S the most flexible of the 32 mm adjustables: the external stop screw sets extend travel anywhere from 85 mm up to the full 125 mm. Force is solid for the size class - 402 N push at 0.5 MPa, meaning roughly 241 N of dependable work once friction and acceleration take their share.
The riveted stainless round body with its hard-chrome plated 12 mm rod stands up to splash, steam and outdoor grit, a genuine edge over painted mini cylinders in food and washdown lines. Every piston leaves the factory magnetised for CMSG, DMSG and EMSG switches, and fixed bumper pads cushion both stroke ends with no air-cushion plumbing to set up.
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ32X125-40S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 125 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 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.
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 32 | Bore size in mm. |
| ×125 | Stroke length in mm. |
| -40 | 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.
Pops up a stop blade to hold tote bins on a gravity roller line, with reach trimmed from 85 mm where guarding sits close.
Backs an anvil under a hand press for bushing insertion, holding about 241 N against the fixture at 0.5 MPa.
Raises a 15 kg inspection hatch on a dust-collector hopper, staying inside the about 20 kg vertical margin with room to spare.
For a job needing under 245 N the 25 mm MAJ is cheaper to run; above about 628 N at 0.5 MPa move to the 40 mm bore. The adjuster is an extend-side mechanical stop, not a mid-stroke lock - if air is lost a hanging load will drift, so use a brake or external stop for critical holding. FA flange and LB foot suit fixed frames, I or Y knuckles take pivoting links, and with 125 mm of stroke, side loads should be carried by external guides. Speed range is 30-800 mm/s.
Quick checklist
At 0.5 MPa: 402.2 N push, 345.6 N pull. At 0.7 MPa: 563.0 N push, 483.8 N pull. Maximum theoretical force is 82 kgf at 1.0 MPa. Supply air is 0.15-1.0 MPa (22-145 psi), filtered to 40 um, with speeds of 30-800 mm/s.
The rolled stainless tube and hard-chrome rod shrug off corrosion in wet or outdoor spots where extruded minis pit, and the riveted build keeps the envelope slim. It is a compact custom platform rather than a standardised footprint, so check dimensions from the datasheet before cutting mounting holes.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
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