
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X35-10S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø40mm bore and 35mm 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.
Thirty-five millimetres of stroke in a 40 mm bore is a clamp-and-release recipe: 628.3 N push, 527.8 N pull at 0.5 MPa, and 879.6 N if you feed it 0.7 MPa. The adjuster trims the extend stroke by up to 10 mm, handy for dialing in contact pressure on short clamps. At full output the rod lifts about 64 kg; halve that for a 2:1 safety margin and you are still moving roughly 32 kg vertically.
The short package drops into tight clamp stations where a longer cylinder will not fit. A variable air cushion at each end softens the clunk when the jaws seat, and the riveted stainless barrel tolerates coolant mist better than painted housings. The magnet is built in as standard for CMSG / DMSG / EMSG switches.
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X35-10S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 35 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. |
| ×35 | 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.
35 mm stroke presses terminals into connector housings for a quick go / no-go crimp test.
Holds test boards flat on a bed-of-nails fixture; the 10 mm trim fine-tunes contact pressure.
Swings a divert flap between two chutes in a parts feeder, cushioned so the flap does not slam.
A 35 mm stroke rarely needs the full bore: if your clamp holds under 402.2 N, the bore 32 MACJ is cheaper; if the jaws need more than 628.3 N at 0.5 MPa, move to the 981.3 N bore 50. Keep the 10 mm adjust window in mind when setting jaw gap - it trims the extend stroke, never lengthens it past 35 mm. Air loss will let the piston drift, so it is no substitute for a locking valve. FA flange, LB foot, and I/Y rod knuckles are all available; the magnet comes fitted as standard.
Quick checklist
At 0.5 MPa: 628.3 N push, 527.8 N pull. At 0.7 MPa: 879.6 N push, 738.9 N pull. Theoretical peak is 128.1 kgf at 1.0 MPa. The bore measures 40 mm with a 16 mm rod, 1/8" air port and M12x1.25 rod thread. It runs on 0.15-1.0 MPa (22-145 psi), handles 30-800 mm/s, and stands 1.5 MPa (215 psi) proof pressure.
Choose an FA flange for face mounting or an LB foot for base mounting, and add an I or Y rod knuckle when the jaw needs a little angular freedom. The riveted round stainless body bolts down with a minimal envelope, and the built-in magnet supports CMSG / DMSG / EMSG switches so your PLC can confirm the jaw is closed before cycle start.
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Covers non-human-caused product damage.
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