
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ32X300-75S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø32mm bore and 300mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
A 32 mm bore mini cylinder with a trimming stop, the MAJ32X300-75S runs double-acting and lets you shorten the extend stroke anywhere in a 75 mm window using an external stop screw. At 0.5 MPa it pushes 402.2 N and pulls 345.6 N; at 0.7 MPa push rises to 563.0 N. Plan real work around 241 N at 0.5 MPa, about 60 percent of the rating, so the cylinder never sits at its ceiling.
The round barrel is stainless steel rolled onto aluminium covers with a 12 mm hard-chrome plated rod, so mild washdown and humid plants suit it well. Every MAJ ships with a built-in magnet for CMSG, DMSG or EMSG switches, and a fixed anti-impact pad softens each stroke end - it decelerates only, and is not an adjustable air cushion like the MAC family. Ports are 1/8", the rod thread is M10x1.25 male, speed spans 30-800 mm/s at 0.15-1.0 MPa (22-145 psi), and the body tolerates -20 to +70 C.
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ32X300-75S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 300 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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 | 402 N | 346 N |
| 0.7 MPa | 563 N | 484 N |
| Max (@1.0 MPa) | 82 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). |
|---|---|
| 32 | Bore size in mm. |
| ×300 | Stroke length in mm. |
| -75 | 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.
Pushes cartons the final 300 mm onto a packing conveyor; wind the stop screw in to 240 mm when a smaller carton size runs, all on the same cylinder.
The stainless barrel and hard-chrome rod shrug off daily hose-down in a dairy or bottling line where painted minis corrode, with 402 N to swing product across the belt.
A CMSG switch on the built-in magnet confirms clamp-on and clamp-off on a CNC fixture, while the fixed bumper pad takes the snap out of each close.
At 0.5 MPa the next bore down, 25 mm, gives 245.3 N push, while 40 mm delivers 628.3 N if you need headroom. The stop screw only trims the extend stroke - it is a mechanical end stop, not a lock, so the rod will drift if air is cut and a locking valve is needed to hold position. FA flange and LB foot bases plus I and Y rod knuckles cover the mounting, and the standard-fit magnet takes CMSG, DMSG or EMSG feedback without a special piston. A 300 mm stroke on a 12 mm rod asks for external guiding - keep side loads off the rod and thrust axial to avoid bending.
Quick checklist
At 0.5 MPa the 32 mm bore produces 402.2 N push and 345.6 N pull; at 0.7 MPa this reaches 563.0 N push and 483.8 N pull. The theoretical ceiling is 82 kgf at 1.0 MPa. Supply 0.15-1.0 MPa (22-145 psi) of 40 um filtered air and keep speed between 30 and 800 mm/s.
An external stop screw limits rod extension to any value between 225 and 300 mm - turn it in to shorten, back it out to regain stroke up to the full 300 mm. It is a mechanical end stop, so the rod is not locked mid-stroke. The piston magnet is fitted as standard, so CMSG, DMSG or EMSG switches drop straight onto the barrel.
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