Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X125-40S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X125-40S is a genuine double acting, adjustable stroke + cushion 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 variable air cushion at both ends lets you tune end-of-stroke deceleration on site.
- BoreØ32 mm
- Stroke125 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 MACJ32X125-40S
For stations that need a longer trim range, the MACJ32X125-40S shortens its 125 mm extend stroke down to 85 mm, covering part families that differ by up to 40 mm. This is a double-acting round mini cylinder with a variable cushion at both ends; at 0.5 MPa (72 psi) the 32 mm bore extends with 402 N and retracts with 345.6 N, a level suited to medium clamps and actuated guides.
Construction is a stainless-steel barrel rolled together with aluminium covers and a stainless block, giving a smooth round body that wipes clean in food and packaging areas, and the 12 mm rod carries a 20 um hard-chrome layer for long seal life. As a sizing guide, budget about 241 N of continuous push, which is 60% of the 402 N rating at 0.5 MPa, and note that the stop screw sets position only - it will not lock the rod against drift when air pressure is lost. The standard magnet works with CMSG, DMSG and EMSG switches; mounts are FA flange or LB foot.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X125-40S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X125-40S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 125 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 MACJ32X125-40S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 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.
Where the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X125-40S Is Used
Stopper pin on an automotive subassembly conveyor
Set the extend stroke per pallet type within the 85-125 mm range; the 402 N extend force at 0.5 MPa holds heavy pallets against chain motion.
Tray divider in a medical device kit packer
Change divider spacing without re-plumbing, and the both-end cushion keeps cycles quiet even at 800 mm/s.
Lid press on a cosmetic filling line
Roughly 20 kg of vertical pressing capacity with a 2:1 margin seats snap lids, and the stainless body wipes down easily between batches.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X125-40S the Right Cylinder?
Compare force brackets before ordering: a 25 mm bore manages 245 N at 0.5 MPa and a 40 mm bore reaches 628 N, so choose this 32 mm unit when the job needs roughly 400 N plus a 40 mm trim window. The -40 adjuster trims extend travel from 125 to 85 mm while retraction stays fixed at 125. With a 125 mm stroke, brace long carriers on external guides so bending loads stay off the 12 mm rod, and pick I or Y knuckles where the linkage pivots.
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 MACJ32X125-40S FAQ
At 0.5 MPa (72 psi): 402 N extend, 345.6 N retract. At 0.7 MPa (101 psi): 563 N extend, 483.8 N retract. Maximum theoretical output is 82 kgf at 1.0 MPa. Operating range is 0.15-1.0 MPa (22-145 psi) with a proof pressure of 1.5 MPa (215 psi).
The tube is stainless steel rolled onto the aluminium covers with a stainless block, and the 12 mm piston rod is carbon steel plated with 20 um of hard chrome - a combination that resists corrosion in damp, washed-down locations far better than painted mini cylinders.
Authorized Export Seller
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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