
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X175-40S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø63mm bore and 175mm 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.
Trim the extend stroke on the machine, not on the order form: the -40 window on this 63 mm MACJ lets maintenance shorten travel by up to 40 mm without a new cylinder. Double-acting with a variable air cushion at both ends, it puts out 1558 N pushing at 0.5 MPa and cycles at 30-800 mm/s.
The round stainless barrel with its hard-chrome 16 mm rod takes washdown and outdoor damp that eat painted-steel minis, and the magnet ships standard, so CMSG, DMSG or EMSG switches drop on without a special piston. Practical sizing: count on about 935 N of usable push at 0.5 MPa, close to a 79 kg vertical lift at half margin.
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X175-40S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø63 mm |
| Stroke | 175 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. |
| ×175 | Stroke length in mm. |
| -40 | 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.
Swings heavy cases between lanes on a sorting conveyor; 1558 N at 0.5 MPa keeps the gate crisp at line speed.
Stops and squares loaded pallets at a transfer point; the 40 mm trim absorbs fixture tolerance in the field, not at the factory.
Opens a sheet-metal guard on a machining cell; the both-end cushion quiets the close even at 800 mm/s.
Downsize to a 50 mm bore (981 N at 0.5 MPa) only when the load clearly allows; nothing in the MA series outsizes this 63 mm bore. Because the -40 stop sets extend position mechanically, it is not a brake -- with air removed the piston can creep, so use a locking valve or an external clamp when the load must hang. FA flange and LB foot mountings suit rigid frames, I and Y rod knuckles cover pivoting links, and at 175 mm stroke keep side load guided away from the 16 mm rod.
Quick checklist
Push at 0.5 MPa is 1558 N with 1457 N on the pull side; at 0.7 MPa those become 2181 N push and 2040 N pull. The theoretical maximum at 1.0 MPa is 317.7 kgf. The cylinder runs on 0.15-1.0 MPa (22-145 psi), tolerates 1.5 MPa (215 psi) proof, and works from -20 to +70 C at 30-800 mm/s.
The high-precision stainless tube with a hard-chrome plated carbon-steel rod resists mild corrosion and washdown better than painted-steel or bare-aluminium minis, so it suits food areas, outdoor frames and damp shops. The riveted, rolling-packed covers keep the body sealed, and no tie-rod bolts need retorquing.
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Covers non-human-caused product damage.
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