Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X225-30S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X225-30S 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 MAJ40X225-30S
Changeovers get easier here: the external stop screw on this AirTAC MAJ40X225-30S trims the extend stroke anywhere inside a 30 mm window, so one cylinder covers several stop positions. The 40 mm bore is double-acting and converts 0.5 MPa of air into 628 N of push - 879.6 N if you run 0.7 MPa - across a 225 mm standard stroke.
The round body is a riveted stainless tube with aluminium-alloy covers, compact enough for tight machine frames and tough enough for damp or washed-down areas thanks to the 20 um hard-chrome rod. Sized for real work, plan on roughly 377 N at 0.5 MPa (a 2:1 margin) - enough to lift about 32 kg vertically. Fixed anti-impact pads ease the ends of travel, and the magnet is a standard fitment, so CMSG / DMSG / EMSG switches need no engineering change.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X225-30S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X225-30S |
|---|---|
| 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 MAJ40X225-30S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×225 | 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.
Where the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X225-30S Is Used
Motor end-bell seating
Seats small pump-motor end bells onto stator stacks at an assembly cell, where the 30 mm window covers two housing heights without a cylinder change.
Carton leaflet inserter
Drives folded instruction leaflets into pharmaceutical cartons ahead of glue flap closing, one cylinder per carton lane on the packaging machine.
PET flake diverter gate
Swings a chute gate to divert recycled PET flakes between two silo lines, cycling up to 800 mm/s whenever the line speed increases.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X225-30S the Right Cylinder?
Compare the next size down - a 32 mm MA pushes 402.2 N at 0.5 MPa - before committing to this bore's 628.3 N push and 527.8 N pull; the MA family stops at 40 mm, so heavier duty means a different series. Keep in mind the stop screw only sets the extend end position: it is a mechanical limit, not a mid-stroke clamp, and the rod will coast if air pressure drops. With 225 mm of travel, side loads on the 16 mm rod should be guided externally to protect the barrel and seals. Mounting is FA flange or LB foot, with I and Y rod knuckles for angled pull lines; the port is 1/8" and the rod thread M12x1.25.
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 MAJ40X225-30S FAQ
Figures: 628.3 N push and 527.8 N pull at 0.5 MPa; 879.6 N push and 738.9 N pull at 0.7 MPa; 128.1 kgf theoretical maximum at 1.0 MPa. The cylinder accepts 0.15-1.0 MPa (22-145 psi) of filtered air, tolerates 1.5 MPa (215 psi) proof, and moves 30-800 mm/s. Its 1/8" ports and M12x1.25 male rod thread suit standard fittings.
FA flange and LB foot bodies are both orderable, and I or Y rod knuckles handle pivoting pull loads; the adjustable-stroke version omits the SDB and back-cover mounting codes, so pick FA or LB when ordering. Because the magnet is built in as standard, CMSG / DMSG / EMSG switches mount without modifying the piston.
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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