Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X225-40S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X225-40S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø32mm bore and 225mm 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.
- BoreØ32 mm
- Stroke225 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM10×1.25
- CushionVariable air cushion, both ends
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X225-40S
Stainless round body, hard-chrome rod, riveted aluminium-alloy covers - the MACJ32X225-40S is built for damp shops where painted minis rust out. Double-acting with a 225 mm stroke, it pushes 402 N and pulls 346 N at 0.5 MPa, rising to 563 N push at 0.7 MPa. The -40 suffix means the extend stroke can be dialed down up to 40 mm from full using the external stop screw, with a variable cushion at both ends to tame landings. It runs on 40 um filtered air at 0.15-1.0 MPa (22-145 psi) at 30-800 mm/s.
The adjuster is a mechanical end stop for the extend stroke, not a brake: if air is lost the rod still drifts, so external support is needed for load holding. What it does give you is on-machine fine tuning plus a standard built-in magnet that accepts CMSG, DMSG and EMSG switches with no special piston. Sizing tip: keep real work near 241 N (60 percent of push) and you leave margin for friction; that also means this unit can lift about 20 kg vertically with a 2:1 safety factor on the theoretical 41 kg.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X225-40S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X225-40S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 225 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.
Theoretical Output Force (Ø32mm)
| 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.
Model Code: Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X225-40S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 32 | Bore size in mm. |
| ×225 | 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.
Where the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X225-40S Is Used
Bottle line gate indexing
Indexes gates on a bottling line filler infeed, trimming the extend stop within 40 mm as bottle formats change over between runs.
Weld fixture slide
Positions a weld fixture slide in a fabricating cell; about 241 N of usable force holds small steel brackets steady through the tack cycle.
Signalled end positions
With the magnet fitted as standard, CMSG or DMSG switches report both stroke ends to a PLC on a sorting station, no retrofit parts required.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X225-40S the Right Cylinder?
The bore choice is really a force choice: 25 mm gives 245 N at 0.5 MPa, this 32 mm gives 402 N, and 40 mm gives 628 N, so pick by the 241 N working band you actually need rather than peak rating. Mount it FA flange style against a machine face or LB on a foot; I and Y knuckles are available for pivoting links. The standard magnet means a CMSG or DMSG switch adds position feedback with no re-order.
With a 225 mm stroke, keep the rod straight - the slim 12 mm rod tolerates little side load if the payload is not guided. Also remember the 40 mm adjuster sets the extend end point only; it will not clamp or hold a load if pressure drops.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) is standard for sensors
- ✓ Back cover (CA/U/CM) & mount (FA/LB/SDB)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check On first run, back off the cushion screws and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X225-40S FAQ
Rated at 402 N push and 346 N pull on 0.5 MPa air, 563 N push and 484 N pull at 0.7 MPa, with a theoretical peak of 82 kgf at 1.0 MPa. That means about 41 kg of vertical lift at full rating, or roughly 20 kg once you halve for a 2:1 margin; plan continuous work around 241 N.
Yes - every MA-series piston carries a built-in magnet as standard, so CMSG, DMSG and EMSG switches mount directly onto the stainless barrel for end-of-stroke signalling. No special-order piston or retrofit kit is needed, and the variable cushion at each end keeps switch chatter down at speed.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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