Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X250-40S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X250-40S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø25mm bore and 250mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ25 mm
- Stroke250 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 MAJ25X250-40S
Adjustment latitude is the story of this model: the MAJ25X250-40S sets extend travel anywhere from 210 mm to the full 250 mm via an external stop screw, so one cylinder serves several fixture lengths. Bore 25 is rated 245.3 N push and 206.1 N pull at 0.5 MPa (72 psi), rising to 343.4 N of push at 0.7 MPa (101 psi), moving sortation and feed mechanisms at 30 to 800 mm/s.
Beneath the plain exterior sit a stainless-steel barrel and a hard-chrome plated carbon-steel rod, materials that shrug off humid or mildly corrosive corners - a genuine advantage over coated minis in food and outdoor stations. For sizing, count on roughly 147 N of usable push at 0.5 MPa once friction and seal drag are paid for. The piston magnet is already in place as standard, so CMSG / DMSG / EMSG switches snap to the barrel without ordering a special piston.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X250-40S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X250-40S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 250 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 MAJ25X250-40S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×250 | 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 MAJ25X250-40S Is Used
Carousel indexing
Stepping a lab sample carousel between stations: the trim screw sets each station pitch precisely within the 40 mm window, and 245.3 N at 0.5 MPa is far more than the carousel needs.
Strapper flag
Raising a pallet-strapper strap guide flag as the machine cycles - 206.1 N of pull at 0.5 MPa lifts the light guide cleanly and a CMSG switch flags retraction to the controller.
Sorter divert arm
Swinging a divert arm on a warehouse sorter lane, where the 250 mm reach crosses the lane and the trimmed stroke keeps the arm clear of passing totes.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X250-40S the Right Cylinder?
Compare both ways before committing: MAJ20 returns 157.0 N of push at 0.5 MPa, while MAJ32 delivers 402.2 N, so pick 25 mm when the load sits between those bands. Port size is 1/8" at this bore with an M10x1.25 rod thread. Treat the 40 mm window as a trim tool only: the screw is an end stop, not a position lock, and a pressure-loss drift is still possible. FA flange or LB foot mounting, plus I or Y knuckles at the rod, covers most frame designs. With 250 mm of travel, even modest side loads can bend the 10 mm rod, so attach a guide or slide for anything off-axis.
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 MAJ25X250-40S FAQ
Push 245.3 N and pull 206.1 N at 0.5 MPa (72 psi); push 343.4 N and pull 288.5 N at 0.7 MPa (101 psi); 50 kgf theoretical maximum at 1.0 MPa. The extend stroke adjusts between 210 and 250 mm via the external stop screw. Pressure range is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-800 mm/s.
Every MA-series piston carries a built-in magnet as standard equipment, so AirTAC CMSG, DMSG and EMSG reed switches mount directly on the stainless barrel with no special piston order and no waiting. Mount one at each end to signal the trimmed extend position (set anywhere from 210 to 250 mm) and full retraction, giving your controller clean end-of-travel confirmation.
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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