
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X60-20S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø63mm bore and 60mm 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.
Built as a riveted round-body unit rather than a tie-rod design, the MACJ63X60-20S uses a stainless barrel with a 20 um hard-chrome rod and aluminium covers rolled in place, a seal arrangement that survives humidity and light washdown. It is double-acting, the cushions at both ends are adjustable to your load, and the extend stroke trims up to 20 mm at the external stop screw.
This sits at the heavy end of the MA family: 1558 N push and 1457 N pull at 0.5 MPa, 2181 N and 2040 N at 0.7 MPa, peaking at 317.7 kgf theoretical at 1.0 MPa. Budget roughly 935 N for the actual job, or plan vertical lifts near 79 kg with a 2:1 margin. The operating window is 0.15-1.0 MPa (22-145 psi) at 30-800 mm/s.
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X60-20S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø63 mm |
| Stroke | 60 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. |
| ×60 | 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.
Roughly 935 N of usable push arrests loaded pallets without hammering, the 20 mm trim absorbs lane-to-lane height differences, and the stainless shell shrugs off daily hose-down.
Powder dust and spice oils attack painted surfaces; the riveted stainless barrel and grease-storing piston seal keep the gate cycling reliably shift after shift.
The adjustable cushion eases the diverter into its stop so vials and cartons are not jolted, and the DMSG switch confirms divert position for the batch record.
Step down to bore 40 for lighter duty - 628 N push at 0.5 MPa covers loads needing under about 375 N of work - or stay at 63 mm for the full 1558 N. Because the adjuster is purely a mechanical stop for the extend direction, never lean on it to hold a load mid-stroke; air loss lets the piston move. Mount with FA flange or LB foot, add I or Y rod knuckles where the linkage needs them, and rely on the factory magnet for CMSG / DMSG / EMSG position sensing.
Quick checklist
Rated output at 0.5 MPa is 1558 N on extend and 1457 N on retract. Supply 0.7 MPa and those become 2181 N and 2040 N. The maximum theoretical force is 317.7 kgf at 1.0 MPa.
Both ends let you meter the exhaust air, so the piston decelerates gently into the cover. That means you can run faster cycles or carry heavier tooling without the end-of-stroke bang that fatigues mounts and shakes fixtures.
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