
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X60-40S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø40mm bore and 60mm stroke, 1/8" 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.
Sixty millimetres of double-acting travel, cushioned at both ends and trimmable by 40 mm on the extend side: that is the working envelope of the MACJ40X60-40S. Its stainless round barrel and 20 um hard-chrome rod shrug off splashes and humid air that swell painted mini cylinders, and the rolled aluminium covers keep the body sealed without external hardware. At 0.5 MPa the bore pushes 628 N; treated as roughly 377 N of usable work, that seats into medium clamping duties or lifts about 32 kg vertically with a 2:1 margin.
Pressure spans 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s, and the magnet fitted as standard accepts CMSG, DMSG and EMSG switches. Keep in mind the stop screw only shortens the extend stroke and does not hold position if air pressure is lost.
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X60-40S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 60 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/8" |
| Rod thread | M12×1.25 |
| 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 | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 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). |
|---|---|
| 40 | Bore size in mm. |
| ×60 | 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.
A small pneumatic bench press pre-clamps leather goods with 628 N at 0.5 MPa; the 40 mm window sets final thickness per product batch.
The washdown-friendly stainless barrel survives daily hose-down while the cylinder diverts tubs between conveyor lanes; a DMSG switch flags the divert position.
Trim the extend stop during changeover so an indexing pin enters the same detent on both 4- and 6-station rotary indexing tables.
Force ladder at 0.5 MPa: a 32 mm bore pushes 402.2 N, this 40 mm bore pushes 628.3 N and pulls 527.8 N, and a 50 mm bore pushes 981.3 N. Pick the 40 mm when loads sit near 350-550 N; drop to 32 mm for small gates, go to 50 mm for heavy locating work.
The 40 mm adjust window covers jobs where the final stop is tuned during setup. Mount via FA flange or LB foot; I and Y rod knuckles handle pivoting links. The cushion screws in each cover let you raise cycle speed without metal-on-metal stops, and the short 60 mm stroke means no rod-column worries at working pressure.
Quick checklist
628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push and 738.9 N pull at 0.7 MPa, 128.1 kgf theoretical maximum. Bore 40 mm, rod 16 mm, ports 1/8", stroke 60 mm standard, extend trim 40 mm, cushioning variable at both ends, speed 30-800 mm/s, pressure 0.15-1.0 MPa (22-145 psi).
Small needle valves in each aluminium cover throttle the exhaust just before the piston lands, so you can run faster inside the 30-800 mm/s range and carry heavier part weights without the covers taking a hammering. Combined with the 40 mm stop window, both end position and landing softness are tunable on the machine.
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Covers non-human-caused product damage.
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