Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X250-30S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X250-30S 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 MACJ32X250-30S
Stroke changes that need no parts order: inside the 30 mm window of this MACJ32, the extend travel is shortened on the machine via the adjuster screw. The cylinder stays double-acting with cushions you can tune at both ends, and its riveted stainless round barrel resists the corrosion that wrecks painted mini cylinders near coolant mist, rain or outdoor dust. At 0.5 MPa it delivers 402 N of push against 345.6 N of pull; at 0.7 MPa the push reaches 563 N.
Set realistic loads at about 241 N - the 0.5 MPa push derated 40 percent - which equals a vertical lift near 20 kg after halving the theoretical 41 kgf. A hard-chrome layer, 20 um thick, keeps the carbon-steel rod smooth across the full 250 mm travel, and the two-way piston seal stores grease to stretch relubrication intervals. One caution: the adjuster is an end stop, not a brake, so drift on air loss remains possible.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X250-30S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X250-30S |
|---|---|
| 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 MACJ32X250-30S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 32 | Bore size in mm. |
| ×250 | Stroke length in mm. |
| -30 | 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 MACJ32X250-30S Is Used
Pop-up roller gate in sortation
Lifts a 20 kg gate section between conveyor lanes; the 30 mm window dials the raised height precisely, doing away with shim plates on the gate stop.
Seam crimp press on an HVAC bench
Applies 402 N at 0.5 MPa to crimp light-gauge duct seams; the tune-able cushions soften the stroke end so sheet metal does not oil-can.
Punch depth set on a die-cut station
Trims punch travel within 30 mm as dies wear, and the adjustable cushion absorbs shock that would otherwise crack die mounts at full speed.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X250-30S the Right Cylinder?
Position this bore between its neighbours: 245 N push at 0.5 MPa for a MACJ25, 402 N here, 628 N for a MACJ40 - allow at least 40 percent spare force for the job. Over a 250 mm stroke, side loads bend rods, so guide heavy or overhanging parts externally. Magnetic switching is built in, so CMSG / DMSG / EMSG sensors need no options list. FA flange and LB foot mountings, plus I and Y knuckles, cover most fixtures. Fixed-stroke duties suit the MAC32; double-rod duties, the MACD.
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 MACJ32X250-30S FAQ
At 0.5 MPa: 402 N push, 345.6 N pull. At 0.7 MPa: 563 N push, 483.8 N pull. Theoretical maximum force is 82 kgf at 1.0 MPa. Pressure runs 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof; cycling speed is 30-800 mm/s.
The MACJ32X250-30S rolls a stainless barrel onto aluminium covers, so there are no through-bolts to loosen and the body tolerates washdown, coolant mist and outdoor dust that corrode painted mini cylinders. The heterogeneous piston seal doubles as a grease reservoir, cutting service attention over the 250 mm stroke.
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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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