
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X50-10S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø63mm bore and 50mm 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.
With 1558 N of push at 0.5 MPa, this 63 mm bore MACJ is the strongest mini cylinder AirTAC builds in the MA family. It is double-acting, carries an adjustable extend stroke trimmed by a 10 mm stop window, and both ends run a variable air cushion. At 0.7 MPa the same bore reaches 2181 N, so short pressing and clamping jobs stay well within reach.
The body is a riveted stainless-steel round barrel with a 20 um hard-chrome plated rod, an assembly that shrugs off washdown and damp shop air far better than painted minis. The magnet is standard, so CMSG, DMSG or EMSG switches bolt on without a special piston. Working the numbers, the rod lifts about 159 kg vertically at 0.5 MPa; halve that for a 2:1 margin and you still raise a 79 kg load.
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X50-10S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø63 mm |
| Stroke | 50 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. |
| ×50 | Stroke length in mm. |
| -10 | 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.
Pressing bronze bushings into gearbox housings on a small bench press, where 1558 N at 0.5 MPa seats the part without a hydraulic unit.
Raising aluminum die castings of roughly 79 kg between two stations, using the 2:1 lift margin at 0.5 MPa.
A packaging machine stop that needs its extend stroke nudged a few millimeters per product change - the 10 mm window covers it without shims.
Drop to the 50 mm bore (981.3 N push / 880.8 N pull at 0.5 MPa) when the load is lighter and you want a slimmer body; there is no MA bore above 63 mm, so this is the top of the force range. The 10 mm adjuster is a mechanical end stop that shortens the extend stroke only - on air loss the piston drifts, so do not treat it as a load-holding brake.
Mount it FA flange or LB foot, add I or Y knuckles on the rod, and note the adjustable version has no SDB or back-cover code. A 1/4 inch port feeds the 30-800 mm/s speed band.
Quick checklist
At 0.5 MPa it pushes 1557.9 N and pulls 1457.4 N; at 0.7 MPa push rises to 2181.0 N (pull 2040.3 N). The theoretical maximum at 1.0 MPa is 317.7 kgf. Pressure range is 0.15-1.0 MPa (22-145 psi) and speed runs 30-800 mm/s.
An external stop screw shortens the extend stroke anywhere within the ordered 10 mm window - it trims, it never lengthens past the 50 mm nominal stroke. A variable air cushion at both ends lets you soak up end-of-stroke shock once you have set the length.
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