Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X225-50S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X225-50S 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 MAJ40X225-50S
For long, end-adjustable strokes in a compact round body, the MAJ40X225-50S runs double-acting with an external stop screw that trims the extend stroke anywhere inside a 50 mm window. The 40 mm bore pushes 628.3 N and pulls 527.8 N at 0.5 MPa (22-145 psi operating range, 0.15-1.0 MPa), plenty for gate lifting, tray ejection and fixture clamping. Speed spans 30-800 mm/s.
Its stainless barrel with a 20 um hard-chrome plated rod shrugs off washdown and humid air where painted minis corrode, while the fixed anti-impact bumper pads only decelerate the stroke end - this is not an adjustable air cushion, that duty belongs to the MAC family. As a working figure, count on about 377 N of usable push at 0.5 MPa once a margin is applied, and expect the rod to lift roughly 32 kg vertically with a 2:1 margin.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X225-50S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X225-50S |
|---|---|
| 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 MAJ40X225-50S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×225 | Stroke length in mm. |
| -50 | 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 MAJ40X225-50S Is Used
Bottling line gate lift
Raises a stainless gate between filler lanes; at 225 mm stroke the rod lifts a gate assembly of about 32 kg with margin.
Tray ejection at conveyor end
Pushes filled trays off the belt end stop; about 377 N of working thrust at 0.5 MPa clears the lane quickly.
Lid press on filling station
Presses snap lids onto tubs; the 50 mm window lets technicians set the exact pressing depth after install.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X225-50S the Right Cylinder?
The 40 mm bore is the strongest in the MAJ range, so size down to MAJ32 (402.2 N push at 0.5 MPa) or MAJ25 (245.3 N) if the load is lighter. With 225 mm of stroke, keep side loads off the 16 mm rod and add external guides for anything but pure thrust, or the rod will bend over time. FA flange and LB foot mounts, plus I or Y rod knuckles, cover the fixings (no SDB on the adjustable version). The stop screw sets the extend position only - it is a mechanical stop, not a brake, so on air loss the piston can still be pushed off position. A magnet is fitted as standard, so CMSG, DMSG and EMSG switches mount with no special-order piston.
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 MAJ40X225-50S FAQ
At 0.5 MPa the bore 40 piston pushes 628.3 N and pulls 527.8 N. At 0.7 MPa push climbs to 879.6 N. The theoretical maximum at 1.0 MPa is 128.1 kgf. The port is 1/8" on all 40 mm MAJ bodies.
Yes - the round barrel is stainless steel and the carbon-steel rod carries a 20 um hard-chrome plating, so the MAJ40X225-50S holds up in washdown corners, near coolant mist and outdoors where painted mini cylinders rust through.
Authorized Export Seller
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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