
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X10-10S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø40mm bore and 10mm 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.
Short stroke, serious force: 628 N push and 528 N pull at 0.5 MPa, climbing to 880 N and 739 N at 0.7 MPa, with 128 kgf theoretical at 1.0 MPa. The 10 mm adjustable window trims the extend stroke on a stop screw, and the variable air cushion at each end tames the snap of such a stiff bore. It cycles anywhere from 30 to 800 mm/s.
Inside is the usual MA round-body build: a stainless-steel barrel rolled onto aluminium covers, plus a 20 um hard-chrome carbon-steel rod for damp environments. A magnet comes standard, so CMSG / DMSG / EMSG switches detect position out of the box. For sizing, count on about 377 N of usable push at 0.5 MPa, and note this bore lifts roughly 32 kg vertically on a 2:1 margin.
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X10-10S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 10 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. |
| ×10 | Stroke length in mm. |
| -10 | 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 10 mm clamp pinch with 628 N behind it secures alloy plates on a machining table; the trim window aligns the clamp pad with each part datum.
Flicks thin stamped shims off the die face in one short kick; 628 N at 0.5 MPa clears parts that cling to the magnetized stripper plate.
Seats caps on pharmaceutical vials with a brief, cushioned press; the short stroke fits the tight headspace above a capping turret.
Needing only 10 mm of travel? The 32 mm bore peaks at 402 N at 0.5 MPa, while the 50 mm reaches 981 N - this 40 mm splits them with 628 N. Remember the adjuster is an extend-side end stop, not a position lock; the rod can drift if supply drops. FA flange or LB foot mounting, I and Y knuckles, a 1/8" port and an M12x1.25 male rod thread complete the package.
Quick checklist
At 0.5 MPa: 628 N push, 528 N pull. At 0.7 MPa: 880 N push, 739 N pull. Theoretical maximum at 1.0 MPa is 128 kgf. Operating pressure is 0.15-1.0 MPa (22-145 psi) with speeds of 30-800 mm/s.
A 40 mm bore can snap through 10 mm quickly at up to 800 mm/s, and that shock goes straight into the covers. The variable cushion at each end bleeds the last part of travel softly, so you can run faster cycles or heavier clamp loads without metal-to-metal impact.
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