
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X250-100S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø63mm bore and 250mm 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 250 mm of travel and a 100 mm trim window, the MACJ63X250-100S brings heavy 63 mm bore force to long-work envelopes: a double-acting, round-body AirTAC MA mini cylinder with a variable air cushion at each end. The extend stop screw shortens the 250 mm stroke anywhere within 100 mm for mixed-depth jobs. At 0.5 MPa the bore pushes 1558 N and pulls 1457 N, on 0.15-1.0 MPa (22-145 psi) air at 30-800 mm/s.
The stainless tube, riveted aluminium covers and hard-chrome plated rod make it a low-corrosion choice for wet or outdoor lines where painted minis fail. A magnet is built into every piston as standard, pairing with CMSG, DMSG and EMSG switches for zone sensing along the stroke. Size the actual load near 935 N at 0.5 MPa; that equates to roughly 79 kg of vertical lift with a 2:1 margin.
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X250-100S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø63 mm |
| Stroke | 250 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. |
| ×250 | Stroke length in mm. |
| -100 | 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.
Pushes stacked totes across a roller conveyor lane; 250 mm of travel clears the full lane width while cushioning protects the last tote.
Opens and closes a spring-loaded safety gate on a loading dock, with the 100 mm window matching gate frames of different widths.
Raises a 70 kg parts bin to operator height on a lean cell shelf, comfortably inside the 79 kg vertical rating at 0.5 MPa.
This 250 mm stroke sits inside the 63 mm bore's 500 mm standard limit, so longer variants remain available on request. If the job needs less force, the 50 mm bore offers 981 N at 0.5 MPa in the same family. Over 250 mm of travel, guide the load externally and keep side loads minimal - the 16 mm rod is strong but long strokes amplify bending. Choose FA flange or LB foot mounting, with I or Y knuckles for non-axial loads. The adjuster sets stroke length only; a suspended load will settle if supply air fails, so fit a separate locking valve for holding.
Quick checklist
Double-acting with a 250 mm stroke, adjustable within a 100 mm window, and dual variable cushions. At 0.5 MPa it pushes 1557.9 N and pulls 1457.4 N; at 0.7 MPa, 2181.0 N push and 2040.3 N pull; theoretical maximum 317.7 kgf at 1.0 MPa. Port 1/4", rod thread M14x1.5, speed 30-800 mm/s.
No - the stop screw defines the extend stroke length but is not a load-holding brake, so a hanging load will drift down if pressure is lost. For suspended loads fit a locking valve or mechanical latch. The stainless barrel and hard-chrome rod do, however, keep the cylinder reliable in damp or washdown environments over long 250 mm cycles.
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Covers non-human-caused product damage.
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