Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X125-40S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X125-40S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø25mm bore and 125mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ25 mm
- Stroke125 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 MAJ25X125-40S
Adjustable across 40 mm, MAJ25X125-40S is the wide-trim pick of the 25 mm MAJ family: a double-acting mini cylinder that powers the rod out and back with air while an external stop screw sets the extend end position anywhere within 40 mm of the ordered 125 mm stroke. Force output is 245.3 N push and 206.1 N pull at 0.5 MPa, topping out at 50 kgf theoretical, supplied from a 0.15-1.0 MPa (22-145 psi) air line.
The 10 mm rod is hard-chrome plated carbon steel running in a stainless round barrel riveted to aluminium-alloy covers, a build that survives washdown corners and humid warehouses where coated minis corrode. Fixed anti-impact pads quiet each stroke end, the piston magnet is included as standard for CMSG / DMSG / EMSG switch mounting, and sizing math is simple: expect about 147 N of true work at 0.5 MPa, close to lifting a 12 kg part vertically at a 2:1 margin.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X125-40S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X125-40S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 125 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 MAJ25X125-40S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×125 | 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 MAJ25X125-40S Is Used
Tote divert stop
Stops plastic totes at a picking conveyor merge point, the 40 mm trim absorbing roll-back and label clearance variation.
Pick-and-place probe
Advances a vacuum probe to touch a glass panel on an electronics feeder, adjusting touch depth within 40 mm between panel types.
Fill nozzle lowering
Lowers a filling nozzle into wide-neck jerrycans on a chemical line, with the trim covering 5 L and 10 L neck heights.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X125-40S the Right Cylinder?
Bench your requirement against the range: MAJ16 gives 100.5 N of push at 0.5 MPa and MAJ32 gives 402.2 N, leaving this 25 mm bore the right call for duties near 150 N. Bear in mind the adjuster only fixes the extend end position - it is not a mid-stroke lock, and a suspended or pulled rod can still drift when air drops. Choose FA flange or LB foot mounting, pair with an I or Y knuckle where the tool articulates, and click sensors on over the standard magnet. For the 125 mm span, support lateral loads outside the cylinder to protect the rod.
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 MAJ25X125-40S FAQ
At 0.5 MPa: 245.3 N push, 206.1 N pull. At 0.7 MPa: 343.4 N push, 288.5 N pull. Theoretical maximum 50 kgf at 1.0 MPa. The extend stroke trims within the 40 mm adjuster window, the rod speed spans 30-800 mm/s, and the air supply must stay between 0.15-1.0 MPa (22-145 psi).
Yes - the magnet is built into the piston on every MAJ cylinder, so CMSG, DMSG and EMSG switches clamp onto the stainless barrel and detect end positions straight away. This helps confirm the stop-screw setting after you re-trim the stroke during a changeover.
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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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