Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X225-75S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X225-75S 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 MAJ40X225-75S
Where the exact end of stroke is only known once the machine is built, this MAJ40X225-75S lets fitters dial the extend stop back by up to 75 mm with an external screw. It is double-acting throughout, running on filtered air at 0.15-1.0 MPa (22-145 psi) at 30-800 mm/s, and the 40 mm bore yields 628.3 N of push and 527.8 N of pull at 0.5 MPa.
The riveted round body pairs a stainless tube with a hard-chrome plated steel rod, a combination that outlasts painted minis in damp food plants and outdoor cells. A standard-fit magnet accepts CMSG, DMSG or EMSG reed switches without options. For load math, the rating supports a vertical lift of about 32 kg with a 2:1 margin, or roughly 377 N of sustained push once you de-rate the 0.5 MPa figure.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X225-75S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X225-75S |
|---|---|
| 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 MAJ40X225-75S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×225 | Stroke length in mm. |
| -75 | 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 MAJ40X225-75S Is Used
Carton divert on palletizing infeed
Swings cartons from a main belt onto a spur; 628.3 N push at 0.5 MPa handles heavy double-stack cases.
Weld jig clamp on tube frames
Clamps tube butt joints before welding; the 75 mm trim absorbs tolerance stack between jig variants.
Mold change lift assist
Lifts the locating edge of small injection molds, about 32 kg vertical with a 2:1 margin.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X225-75S the Right Cylinder?
If 628.3 N at 0.5 MPa is more than the job needs, MAJ32 delivers 402.2 N and MAJ20 only 157.0 N from the same family. At 225 mm extension, side loads should be carried by external guides rather than the 16 mm rod itself. Choose FA flange or LB foot mounting, with I or Y knuckles where a linkage is needed; the adjustable model omits SDB and the back-cover code. Remember the stop screw shortens the extend stroke only - under lost air the rod is free to drift, so add a lock elsewhere if position must be held.
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 MAJ40X225-75S FAQ
Push at 0.5 MPa is 628.3 N, pull at 0.5 MPa is 527.8 N, and at 0.7 MPa the push reaches 879.6 N. At 1.0 MPa the theoretical force tops out at 128.1 kgf. The 75 mm window trims the 225 mm extend stroke on site.
Every MAJ ships with the piston magnet already installed, so CMSG, DMSG and EMSG switch models clip onto the 40 mm barrel directly. No special-order piston or retrofit kit is involved, and sensing works across the full 225 mm travel.
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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