
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X150-100S 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.
A wide 100 mm trim window makes this the most flexible build in the 40 mm MAJ group: air drives the rod both ways, and the external stop screw sets extend travel anywhere between 50 and 150 mm on site without swapping parts. At 0.5 MPa the bore delivers 628.3 N of push, enough for a 150 mm reach into palletizing and carton stations. Fixed bumper pads at each end soften stroke-end knock; they decelerate only and are not an adjustable cushion.
The riveted round body pairs a stainless barrel with a 16 mm hard-chrome rod, so mild corrosion and washdown mist do not attack the tube the way they can on painted minis. Doing the arithmetic before you spec it: budget roughly 377 N of that 0.5 MPa force for real work, or expect about 32 kg of vertical lift with a 2:1 margin. A magnet ships inside every piston, so CMSG, DMSG or EMSG switches clamp straight on.
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X150-100S |
|---|---|
| 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. |
| -100 | 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.
Shifts cartons off a conveyor lane at the end of a palletizing cell; 628 N at 0.5 MPa clears stacked loads with margin.
Clamps machined housings inside a 150 mm envelope, with the 100 mm window letting one cylinder serve several jig sizes.
Opens a stainless guard gate in a dairy fill room where the stainless barrel shrugs off daily hose-down mist.
Compare both directions before ordering: the 32 mm MA cylinder delivers 402.2 N at 0.5 MPa, so step up to this 40 mm unit once line loads pass roughly 377 N of usable force. Because the 100 mm window lets extend travel run from 50 mm up to the full 150 mm, confirm your tooling tolerates that minimum before committing. Mount via FA flange or LB feet; I and Y knuckles carry pivoting links. At 150 mm of travel keep the 16 mm rod clear of side loads and guide off-centre parts externally. The stop screw sets end position only, so if air fails the piston still drifts; fit a blocking valve for suspended loads.
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 maximum at 1.0 MPa is 128.1 kgf. Pressure range is 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof, and speed runs 30-800 mm/s.
The barrel is stainless steel and the 16 mm rod is hard-chrome plated carbon steel, a pair that tolerates washdown mist and humid air far better than painted mini cylinders. Aluminium covers are riveted to the tube, and the piston seal stores its own grease between services.
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