Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X250-20S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X250-20S 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 MACJ32X250-20S
Trim the stroke on the machine, not on the order form: within its 20 mm window the MACJ32X250-20S lets maintenance set exact extend travel without swapping cylinders. It is double-acting with a tune-able air cushion at each end, and the barrel is high-precision stainless steel rolled into a sealed round body with aluminium covers, an edge over painted minis in damp or lightly washed areas. Push force is 402 N at 0.5 MPa, climbing to 563 N at 0.7 MPa.
Budget roughly 241 N of working force at 0.5 MPa; in vertical terms that is about 20 kg of lift once a 2:1 margin halves the 41 kgf theoretical figure. Because the trim is a mechanical end stop, the rod still moves if supply pressure drops - it never acts as a load-holding brake. The piston magnet is standard, so CMSG, DMSG or EMSG switches clip straight onto the barrel.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X250-20S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X250-20S |
|---|---|
| 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 MACJ32X250-20S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 32 | Bore size in mm. |
| ×250 | Stroke length in mm. |
| -20 | 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 MACJ32X250-20S Is Used
Reject ejection on a carton line
Sweeps misprinted cartons off the belt with 402 N at 0.5 MPa; the 20 mm window sets the exact eject point as carton sizes change between runs.
Glue-head dive on a box folder
Dips a hot-melt nozzle into each seam; the twin cushions stop the head softly, so high-speed cycling at up to 800 mm/s never hammers the nozzle mount.
Clamping jig in an aluminium deburr cell
Holds extrusions against a backstop at about 241 N of derated force; the stainless round body wipes clean after coolant mist exposure shift after shift.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X250-20S the Right Cylinder?
Compare bores at 0.5 MPa before committing: 245 N on a MACJ25, 402 N here, 628 N on a MACJ40 - pick the smallest that clears the load with spare capacity. Guide any side load separately over the 250 mm stroke to protect the 12 mm hard-chrome rod. Mount by FA flange or LB foot; I and Y knuckles suit swivelling joints. Should the load need holding at a set point, a valve circuit handles that - the trim screw limits travel only. Prefer bumpers to cushions? The MAJ variant covers it.
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 MACJ32X250-20S FAQ
Push is 402 N and pull 345.6 N at 0.5 MPa; at 0.7 MPa it reaches 563 N push and 483.8 N pull; theoretical maximum is 82 kgf at 1.0 MPa. It runs on 0.15-1.0 MPa (22-145 psi), proof tested to 1.5 MPa (215 psi), at speeds of 30-800 mm/s.
No. Every MACJ32X250-20S leaves the factory with a piston magnet fitted as standard equipment, so CMSG, DMSG and EMSG switches mount directly on the stainless barrel and signal end-of-stroke positions without special-order pistons or options lists.
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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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