
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X225-30S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø63mm bore and 225mm stroke, 1/4" 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.
A big-bore member of the MA round-body family, the MACJ63X225-30S pairs a stainless-steel barrel with a hard-chrome plated 16 mm rod to deliver 1557.9 N of push and 1457.4 N of pull at 0.5 MPa. It is double-acting, carries a variable air cushion at each end, and ships with the piston magnet already fitted, so CMSG, DMSG and EMSG switches drop straight on. Pressure range is 0.15-1.0 MPa (22-145 psi) and speed spans 30-800 mm/s.
The stop screw trims the extend stroke by up to 30 mm on site, letting one cylinder serve several fixture depths without re-ordering. Rolled aluminium covers seal the riveted body, a build that shrugs off washdown where painted minis corrode. Sized sensibly, plan for roughly 935 N of continuous work at 0.5 MPa, and halved for a 2:1 margin the bore lifts about 79 kg vertically.
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X225-30S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø63 mm |
| Stroke | 225 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/4" |
| Rod thread | M14×1.5 |
| 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.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1458 N |
| 0.7 MPa | 2182 N | 2041 N |
| Max (@1.0 MPa) | 318 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 63 | Bore size in mm. |
| ×225 | 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.
With 1557.9 N at 0.5 MPa the cylinder seats flaps on corrugated cases, and the 30 mm trim window adapts the press height when carton sizes change.
The 63 mm bore holds steel tubes against the jig while welders work; the dual air cushions let operators cycle quickly without hammering the fixture.
Halved for margin, the bore lifts about 79 kg of hinged lid weight vertically, and the magnet feeds a CMSG switch to confirm the lid is fully open.
Downsizing to a 50 mm MACJ drops output to 981.3 N at 0.5 MPa, so stay at 63 mm once the job nears 900 N; 63 mm is the top of the MA series at 1557.9 N. Keep applied force near 935 N for long seal life. The adjuster is a mechanical end stop, not a mid-stroke lock - if air is lost the rod will drift, so add a locking or check valve where position must persist. FA flange or LB foot mounts bolt straight on, I and Y rod knuckles suit linkage work, and at 225 mm of stroke keep side thrust low to protect the 16 mm rod.
Quick checklist
At 0.5 MPa it pushes 1557.9 N and pulls 1457.4 N. At 0.7 MPa those figures rise to 2181.0 N push and 2040.3 N pull. The theoretical maximum at 1.0 MPa is 317.7 kgf. The rated pressure band is 0.15-1.0 MPa (22-145 psi) and speed runs 30-800 mm/s.
No. Every MA-series cylinder leaves the factory with a magnet built in, so CMSG, DMSG and EMSG switches clip straight onto the stainless barrel without an option code. Ports are 1/4" at this bore and the male rod thread is M14x1.5.
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