
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X175-20S 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.
With a 20 mm trim range on a 175 mm stroke, the MACJ63X175-20S suits jobs where the final extend position must shift occasionally - different die heights, jig variants, service loops. Double-acting and cushioned at both ends, it converts a 0.5 MPa supply into 1557.9 N of extend force and 1457.4 N of return force.
The body follows AirTAC's MA round format: a high-precision stainless barrel with aluminium-alloy covers riveted in place, driving a hard-chrome plated carbon-steel rod that outlasts painted shafts in humid or washdown cells. Budget about 935 N of usable push at 0.5 MPa - around 158 kg of lift, or 79 kg with a 2:1 margin. The piston magnet comes as standard equipment for CMSG, DMSG and EMSG switches. Supply 0.15-1.0 MPa (22-145 psi); speed 30-800 mm/s.
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X175-20S |
|---|---|
| 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. |
| -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.
One clamp covers two die heights in a small press cell - shift the stop screw 20 mm at changeover instead of re-plumbing.
Kicking stuck parts free with 1557.9 N at 0.5 MPa; the both-end cushions keep the eject plate from cracking.
Latching heavy AGV battery carts into charging bays; a DMSG switch confirms the latch is home before the AGV releases.
Compare 1557.9 N at 0.5 MPa with the 50 mm bore's 981.3 N before committing - 63 mm is the series ceiling, so upsizing is not an option. Mount with the FA flange or LB foot and finish the rod end with an I or Y knuckle. The 20 mm stop screw sets a shorter extend stroke and holds nothing on air loss - treat it as a hard stop, never a brake, and add a locking valve if the load must stay put. With 175 mm of rod exposed, watch side load or the 16 mm rod will pick up bending stress.
Quick checklist
Push 1557.9 N and pull 1457.4 N at 0.5 MPa; push 2181.0 N and pull 2040.3 N at 0.7 MPa; theoretical ceiling 317.7 kgf at 1.0 MPa. The bore is 63 mm with a 16 mm hard-chrome rod, 1/4" ports, an M14x1.5 rod thread, 0.15-1.0 MPa (22-145 psi) supply and 30-800 mm/s speed.
The stainless round barrel and riveted aluminium covers are made for damp, food-adjacent and outdoor cells, and the hard-chrome plated rod resists corrosion and wear far better than painted steel. Pair that with the standard piston magnet - CMSG, DMSG or EMSG switches mount directly on the tube for position feedback - and the variable air cushion, which absorbs end-of-stroke shock when you run fast or heavy.
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