
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ32X120-30S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø32mm bore and 120mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
AirTAC's MAJ32X120-30S packs 402 N of push at 0.5 MPa into a compact round-body mini cylinder that runs double-acting with a tunable extend stroke. An external stop screw shortens the extend stroke by up to 30 mm after installation, so one unit covers several stop positions on the same machine. Supply pressure stays at 0.15-1.0 MPa (22-145 psi) and rod speed runs 30-800 mm/s.
The rolled stainless barrel with its hard-chromed 12 mm rod shrugs off splash, washdown and outdoor exposure far better than painted minis, while a fixed anti-impact pad eases the piston into each stroke end without any tuning. For planners: at 0.5 MPa you can responsibly commit about 241 N to real work, leaving healthy margin on the 402 N rating.
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ32X120-30S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 120 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. |
| ×120 | Stroke length in mm. |
| -30 | 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.
Trimming the 30 mm window lets one cylinder serve both small and tall carton sizes on a packaging line without changing hardware.
About 241 N of usable force at 0.5 MPa seats laboratory vial caps gently and repeatably in a benchtop filling rig.
The stainless barrel and chrome rod survive constant washdown on food-grade conveyor divert stations where painted bodies corrode.
If 402 N at 0.5 MPa leaves you underpowered, step up to the MAJ40 (628 N push at 0.5 MPa); for lighter pick-and-place work the MAJ25 already gives 245 N. Keep in mind the adjuster only shortens the extend stroke - it cannot push travel past the ordered 120 mm, and it will not lock a mid-stroke position against drift.
Mount it FA (flange) or LB (foot), add an I or Y rod knuckle where the load pivots, and rely on the standard magnet for CMSG / DMSG / EMSG switch sensing.
Quick checklist
At 0.5 MPa the 32 mm bore pushes 402 N and pulls 346 N; at 0.7 MPa those rise to 563 N push and 484 N pull. The theoretical maximum is 82 kgf at 1.0 MPa. Design around roughly 241 N of continuous work to keep a solid margin.
An external stop screw shortens the extend stroke anywhere within the ordered 30 mm window, and fixed anti-impact bumper pads soften arrival at each end. The screw is a mechanical end stop only - it neither cushions nor holds the load if air pressure is lost.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.