
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ32X30-20S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø32mm bore and 30mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
A compact 32 mm bore workhorse for tight envelopes: the MAJ32X30-20S runs double-acting on both faces and carries an external stop screw that trims the extend stroke anywhere inside its ordered 20 mm window. Push force reaches 402 N at 0.5 MPa (563 N at 0.7 MPa), ample for short-reach clamping and ejection duties.
The stainless barrel with hard-chrome plated rod shrugs off washdown and mild corrosion far better than painted minis, while the riveted round body stays slim in crowded machines. Plan on roughly 241 N of real work at 0.5 MPa rather than the full rating, or about 20 kg of vertical lift once a 2:1 margin is applied.
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ32X30-20S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 30 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. |
| ×30 | Stroke length in mm. |
| -20 | 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.
Repeatably clamps aluminium brackets in a drilling fixture; the 20 mm window lets the setter land the rod on each part without shimming.
Kicks small vials into a check station on a pharmaceutical line, the stop screw set to a 12 mm effective reach.
Ejects stamped clips from a soft die in a press shop, the fixed bumper pad absorbing the breakaway hit at stroke end.
Between the 25 mm bore (245 N push at 0.5 MPa) and the 40 mm bore (628 N), this 32 mm size sits in the mid-thrust band with a 12 mm rod and 1/8" port. If the load needs about 241 N of pushing effort, you are already sized right; step down to the 25 mm bore when force budget is tight.
Remember the stop screw only limits how far the rod extends - it is not a mid-stroke lock, so with air lost the piston can still drift. Choose FA flange or LB foot mounting, and the standard-built magnet accepts CMSG / DMSG / EMSG switches for end-position signals.
Quick checklist
At 0.5 MPa the 32 mm bore pushes 402 N and pulls 346 N; at 0.7 MPa that rises to 563 N push and 484 N pull. Theoretical maximum at 1.0 MPa is about 82 kgf. Speed range is 30-800 mm/s over a 0.15-1.0 MPa (22-145 psi) supply.
An external stop screw shortens the extend stroke anywhere within the ordered 20 mm window - you never lengthen it past the 30 mm catalog stroke. It acts as a mechanical end stop only: it will not hold a load in position if air pressure drops.
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