Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X250-40S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X250-40S 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.
- BoreØ32 mm
- Stroke250 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 MACJ32X250-40S
A 40 mm trim range gives this 32 mm bore the widest on-site stroke latitude in the MACJ32X250 family. It is double-acting, damped by variable air cushions at both ends, and built as a round-body mini: a stainless barrel, a hard-chrome plated rod and aluminium covers rolled into one sealed unit. Output at 0.5 MPa is 402 N push with 345.6 N pull, rising to 563 N at 0.7 MPa.
Match real parts to the bore by planning on roughly 241 N of working force, which lifts about 20 kg vertically once the theoretical 41 kgf is halved for safety. A magnet is included in every piston, so CMSG, DMSG or EMSG switches drop on for position feedback. A caution for load-holding duties: the adjuster only shortens the extend stroke and holds nothing should air pressure fail.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X250-40S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X250-40S |
|---|---|
| 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.
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 MACJ32X250-40S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 32 | Bore size in mm. |
| ×250 | 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 MACJ32X250-40S Is Used
Stacker pusher on a tray-forming machine
Pulses formed trays into a magazine across 250 mm of travel; the wide 40 mm window lets operators re-tune stack height between tray formats in minutes.
Sample tray transfer in lab automation
Moves sample trays between stations on about 241 N of derated force - far more than trays need, so low-pressure settings keep every transfer gentle.
Scrap gate on a press-shop conveyor
Dumps scrap through a floor gate each press cycle; cushion settings and a DMSG switch on the built-in magnet keep the gate from slamming its frame.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X250-40S the Right Cylinder?
Right-size against the range: 402 N at 0.5 MPa here, 245 N on a MACJ25 and 981 N on a MACJ50 - carry at least 40 percent spare capacity in your pick. The 12 mm rod wants external guiding for long, side-loaded moves at this 250 mm travel. FA flange, LB foot and I or Y rod knuckles cover most fixture styles. If cycling feels slow, check both cushion settings first; the 30-800 mm/s speed band usually hides the culprit there. Should a load need arresting on air failure, switch a valve - the trim screw limits travel, nothing more.
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 MACJ32X250-40S FAQ
Push is 402 N and pull 345.6 N at 0.5 MPa; at 0.7 MPa the cylinder reaches 563 N push and 483.8 N pull. Maximum theoretical force is 82 kgf at 1.0 MPa. It operates on 0.15-1.0 MPa (22-145 psi), proof tested at 1.5 MPa (215 psi).
No. The -40 window only shortens extend travel, down from the ordered 250 mm via the external stop screw. It is a mechanical end stop rather than a mid-stroke lock, so the rod can drift if air is lost. Cushions at both ends are independently variable, letting you damp the new stop position softly.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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