
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X150-10S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø40mm bore and 150mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
Where a machine only needs the last few millimetres tuned, this variant ships with a 10 mm adjustable window instead of a coarse range. The double-acting 40 mm bore still pushes 628.3 N at 0.5 MPa and pulls 527.8 N, and the stop screw outside the cover shortens extend travel by up to 10 mm with a hex key, no disassembly. It is a mechanical end stop, so the rod will still drift if air is lost; treat it as a position trim, never a brake.
Inside, the stainless tube carries a heterogeneous piston seal that traps its own grease, while the 16 mm chrome-plated carbon rod resists scoring across 30-800 mm/s. Derate for reality and about 377 N remains for the actual job at 0.5 MPa, or near 32 kg of vertical lift with a 2:1 factor. The narrow window suits dial-in stations where a CMSG switch sits right at the trimmed end position, read by the magnet already in the piston.
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X150-10S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 150 mm |
| Acting type | Double acting, adjustable stroke |
| 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 | Fixed anti-impact bumper pads |
| 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.
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×150 | 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.
Stops a dispensing head at a repeatable last millimetre on a carton-closing line, trimmed inside the 10 mm window.
Positions a part under a camera for inspection; the magnet drives a CMSG switch exactly at the trimmed stop.
Presses labels onto detergent bottles with about 377 N of working force available at 0.5 MPa.
Sizing here is about trim precision, not raw force: a 32 mm bore (402.2 N at 0.5 MPa) may lift the same load, but this 40 mm unit leaves margin and still retracts with 527.8 N. The 10 mm window is deliberately narrow, so treat the ordered 150 mm as the maximum and plan stops within the last centimetre of travel. FA and LB mounts are catalogue items, and the built-in magnet means a DMSG or EMSG switch needs no special piston. Keep side loads off the 16 mm rod across the long stroke; external guide rails extend service life.
Quick checklist
Design on 628.3 N push and 527.8 N pull at 0.5 MPa. Raise supply to 0.7 MPa and the figures climb to 879.6 N and 738.9 N. At the 1.0 MPa ceiling the theoretical rating is 128.1 kgf, running on air filtered to 40 um within 0.15-1.0 MPa (22-145 psi).
No. Every MA-series piston carries a built-in magnet as standard, so CMSG, DMSG and EMSG switches mount directly on the stainless barrel and read the trimmed end position with no special-order piston required.
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