
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X200-30S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø63mm bore and 200mm 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.
AirTAC's riveted round-body MACJ63X200-30S packs 1557.9 N of push at 0.5 MPa into a stainless-steel mini barrel, and its stop screw trims the extend stroke anywhere inside a 30 mm window on site. Raise supply to 0.7 MPa and the same bore delivers 2181 N, while a variable air cushion at both ends soaks up end-of-stroke shock so the covers survive fast, heavy cycles.
The 16 mm hard-chrome plated rod shrugs off mild corrosion in damp and washdown-prone corners, a real edge over painted-steel minis. For sizing, budget about 935 N of usable push (60% of the rating), which lifts roughly 79 kg vertically with a 2:1 margin. A magnet is built in as standard, so CMSG, DMSG or EMSG switches clip straight on, and the cylinder runs on 0.15-1.0 MPa (22-145 psi) at 30-800 mm/s.
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X200-30S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø63 mm |
| Stroke | 200 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. |
| ×200 | 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.
The 30 mm trim lets you dial clamping reach after fixturing; 1558 N of push at 0.5 MPa clamps heavy steel plate without re-shimming.
At 0.7 MPa the bore reaches 2181 N, enough for shallow riveting and stamping marks, while the cushions stop the ram from bouncing at the adjusted stop.
The standard magnet with a DMSG switch confirms the ejector reached the trimmed end stop before the next carton is released on the packing line.
Compare bores on real numbers: the next size down, a 50 mm MACJ, gives only 981.3 N of push at 0.5 MPa, so if your press or clamp needs more than about 900 N of working force the 63 mm barrel is the right call. The adjuster is a mechanical extend stop, not a mid-stroke lock - on air loss the piston can still drift, so hold loads with a blocking valve or external brake.
Mount with the FA flange or LB foot and match an I or Y rod knuckle to your linkage. Over a 200 mm stroke, keep side load off the rod or guide the load externally to protect the seals.
Quick checklist
At 0.5 MPa it pushes with 1557.9 N and pulls with 1457.4 N; at 0.7 MPa those rise to 2181 N push and 2040.3 N pull. Theoretical maximum force at 1.0 MPa is 317.7 kgf. Supply 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-800 mm/s, double-acting with a 30 mm adjustable extend window.
An external stop screw shortens the extend stroke anywhere within the 30 mm window of the ordered 200 mm stroke; it cannot lengthen the stroke beyond that. It acts as an end stop only, not a load-holding brake, and the variable air cushion at both ends still decelerates the piston over the reduced travel.
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