Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X220-40S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X220-40S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø25mm bore and 220mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ25 mm
- Stroke220 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke
- Rod threadM10×1.25
- CushionFixed anti-impact bumper pads
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X220-40S
Longer reach with a tighter tune: the MAJ25X220-40S stretches to 220 mm while keeping a 40 mm extend-trim window for fine positioning. As a double-acting bore 25 unit it produces 245 N of push at 0.5 MPa - around 25 kgf - and 206 N of pull, covering part ejection and light clamping in one compact barrel.
The riveted round body pairs a stainless-steel tube with aluminium covers, and the 10 mm carbon-steel rod carries a 20 um hard-chrome layer that outlasts bare steel in damp air. Bumper pads fixed at each end soften the stop - an adjustable cushion version of this cylinder exists in the MACJ line instead. Magnets are standard fitment, so a CMSG or DMSG switch mounts without options. In practice, plan for about 147 N of usable push at 0.5 MPa rather than the headline figure.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X220-40S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X220-40S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 220 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 300 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.
Theoretical Output Force (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X220-40S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×220 | Stroke length in mm. |
| -40 | 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.
Where the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X220-40S Is Used
Carton kick-off at a checkweigher
Rejected cartons leave the checkweigher belt via this pusher; the 40 mm window is dialled in so the rod never overshoots the guarding opening.
Lid-lift on a small parts washer
Raising a washer lid needs steady vertical push - about 12 kg of lift with margin - and the stainless barrel keeps rust out of the washer mist.
Presetter probe actuator on a CNC lathe
Extending a tool presetter probe at a repeatable shortened stroke, with the standard magnet and an EMSG switch confirming the position every cycle.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X220-40S the Right Cylinder?
For lighter duties, bore 20 pushes 157 N at 0.5 MPa; for heavier ones, bore 32 delivers 402 N. The stop screw here sets the extend end anywhere within 40 mm of the 220 mm stroke - it shortens travel, never extends it, and it is not a load-holding brake, so dangling loads still fall on air loss. At 220 mm, side loads should be guided externally to protect the rod. Fixture options are the FA flange and LB foot, with I or Y knuckles at the rod end; the 1/8" port and M10x1.25 rod thread suit standard fittings.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) is standard for sensors
- ✓ Back cover (CA/U/CM) & mount (FA/LB/SDB)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check Bumper models: keep speed within the rated range.
- check Installation by qualified personnel per AirTAC docs.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X220-40S FAQ
At 0.5 MPa the bore 25 piston delivers 245.3 N on extend and 206.1 N on retract; at 0.7 MPa, 343.4 N and 288.5 N respectively. The theoretical maximum at 1.0 MPa is 50 kgf. Fluid is filtered air (40 um), pressure 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s.
The stainless barrel plus hard-chromed rod resist the corrosion that quickly ruins painted or bare-aluminium minis in wet, food-adjacent or outdoor locations, and the rolled construction keeps the overall body slim. Add the standard magnet for CMSG, DMSG or EMSG switches and fixed bumpers that cushion both stroke ends, and the MAJ25X220-40S stays serviceable where washdown is routine.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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