Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X225-40S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X225-40S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø40mm bore and 225mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ40 mm
- Stroke225 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke
- Rod threadM12×1.25
- 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 MAJ40X225-40S
When stop positions are still being finalized, the 40 mm trim window of this AirTAC MAJ40X225-40S gives commissioning engineers room to move: the external stop screw sets the extend stroke anywhere inside it, no cylinder swap needed. The double-acting 40 mm bore develops 628 N of push at 0.5 MPa over a 225 mm standard stroke.
Under the paint-free skin sits a riveted stainless barrel with aluminium-alloy covers and a 16 mm rod plated with 20 um of hard chrome, so humid plants and outdoor cells do not eat it alive. Fixed anti-impact pads take the sting out of stroke ends (true adjustable cushioning is MAC territory, not this family). Count on about 377 N of usable work at 0.5 MPa with a 2:1 margin - roughly 32 kg lifted vertically - and the standard magnet means CMSG / DMSG / EMSG switches work from day one.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X225-40S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X225-40S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 225 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.
Theoretical Output Force (Ø40mm)
| 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.
Model Code: Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X225-40S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×225 | 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 MAJ40X225-40S Is Used
Bearing press into gearboxes
Presses small flanged bearings into hobby-scale gearbox housings on an automation bench, with the 40 mm window dialled in during prototype runs.
Solar stringer clamp
Clamps ribbon solder joints flat on a PV module stringer table while heated, releasing once the solder set point is reached.
Pallet corner brace stamp
Presses corner date stamps into stretch-wrapped pallet loads at a warehouse packing bench, one cylinder per corner station.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X225-40S the Right Cylinder?
The MA series ends at this bore, so 628.3 N push / 527.8 N pull at 0.5 MPa is the family ceiling; for lighter duty the 32 mm MA (402.2 N at 0.5 MPa) saves money and space. Treat the stop screw as a mechanical extend-stop only - with air lost, nothing prevents the rod from being pushed back, so add a locking device where a load must be held. Long strokes amplify side load: at 225 mm, guide any off-axis mass externally and let the 16 mm rod see thrust alone. FA flange or LB foot mounting, I / Y knuckles for pivot joints, a 1/8" air port, and a 0.15-1.0 MPa (22-145 psi) supply at 30-800 mm/s complete the picture.
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 MAJ40X225-40S FAQ
Push is 628.3 N and pull 527.8 N at 0.5 MPa; at 0.7 MPa it reaches 879.6 N push and 738.9 N pull; the theoretical ceiling at 1.0 MPa is 128.1 kgf. Supply pressure spans 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof, and the rod cycles at 30-800 mm/s. The port is 1/8" for this 40 mm bore.
No - every MA-series cylinder, including the MAJ40X225-40S, carries a built-in magnet as standard, so CMSG, DMSG and EMSG reed or solid-state switches snap onto the barrel without a special-order piston. The adjustable-stroke design pairs the external stop screw with fixed anti-impact pads that soften, but do not regulate, the stroke-end impact.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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