
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X160-20S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø63mm bore and 160mm 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.
A 63 mm bore is the strongest point in the MA mini family, and this one throws 1557.9 N (about 158 kgf) at 0.5 MPa from a round stainless barrel small enough for crowded machines. It is double-acting with an adjustable extend stroke: an external stop screw trims the stroke by up to 20 mm on site, and a variable air cushion at both ends soaks up heavy landings across the 30-800 mm/s speed band.
The barrel is stainless steel rolled directly onto riveted aluminium covers, so mild corrosion and washdown that kill painted minis leave this one alone. Run it on 0.15-1.0 MPa (22-145 psi) filtered air, plan real work around 935 N at 0.5 MPa - about 60 percent of the push rating - and the seals and cushions will last for years.
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X160-20S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø63 mm |
| Stroke | 160 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. |
| ×160 | 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.
Trimmed to 145 mm, the ram enters the housing before pressing bearings home with 1557.9 N of push at 0.5 MPa.
LB foot brackets clamp tractor-hitch brackets; the 20 mm window sets clamp depth for each fixture variant.
A DMSG switch proves full extend before the ejector kicks brass castings clear of the die.
The 50 mm bore reaches only 981.3 N at 0.5 MPa, so move up to this 63 mm size once loads push past that; 63 mm is the largest bore the MA series offers, so nothing sits above it. The stop screw sets the extend position mechanically - it is not a mid-stroke lock, and the rod still drifts if air is lost, so hold loads with a valve or external stop instead. Mount on an FA flange or LB foot, add I or Y knuckles for pivoting loads, and rely on the standard-built magnet for CMSG, DMSG or EMSG switch signals. At a 160 mm stroke with this much force, guide side loads in external bushings and keep the 16 mm hard-chrome rod in pure thrust.
Quick checklist
On 0.15-1.0 MPa (22-145 psi) air: 1557.9 N push and 1457.4 N pull at 0.5 MPa, rising to 2181.0 N push and 2040.3 N pull at 0.7 MPa, with a theoretical peak of 317.7 kgf at 1.0 MPa. Rod speed runs 30-800 mm/s, both ends are cushioned, and the extend stroke trims up to 20 mm below 160 mm through the stop screw. Ports are 1/4".
No. Every MA-series cylinder ships with the magnet built in as standard, so CMSG, DMSG or EMSG switches drop straight on for end-of-stroke detection. The variable air cushion at both ends is likewise fitted, tuned by adjusting screws rather than ordered as an extra.
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