Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X450-40S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X450-40S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø25mm bore and 450mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ25 mm
- Stroke450 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 MAJ25X450-40S
Forty millimeters is the widest trim window in this bore size, and the MAJ25X450-40S uses it to cover a family of fixtures with one cylinder: order the 450 mm made-to-order stroke, then stop the extend anywhere between 410 and 450 mm to suit each station. Rated push is 245.3 N at 0.5 MPa (pull 206.1 N); expect around 147 N of dependable working force once a sensible margin is applied.
The anti-impact bumpers are molded in place, so end-of-stroke shock stays controlled even at the 800 mm/s top speed. Between them sits a rolling-packed stainless tube and a hard-chrome 10 mm rod - a combination that survives condensation, coolant mist and outdoor dust far better than coated minis. Operating window: 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), -20 to +70 C.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X450-40S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X450-40S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 450 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 MAJ25X450-40S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×450 | 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 MAJ25X450-40S Is Used
Depth stop for pallet strapping heads
Coarse-set the head position across pallet sizes with the 40 mm window; 245 N at 0.5 MPa presses the strap channel home on each cycle.
Reagent drawer push on an analyzer deck
The wipe-clean stainless body shrugs off reagent splashes, and about 12 kg of vertical lift margin handles fully loaded drawer trays.
Hinge-cycle fatigue rig in a test lab
450 mm of made-to-order travel swings full door cycles at up to 800 mm/s, with fixed bumpers damping every reversal at 30-800 mm/s.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X450-40S the Right Cylinder?
For push tasks at 0.5 MPa this bore 25 unit produces 245.3 N - about six tenths of bore 32's 402.2 N and over half again bore 20's 157.0 N - so pick it when the load is a few kilograms and the stroke is long. At 450 mm, keep side load off the 10 mm rod with external guides or an LB foot plus a knuckle. The stop screw sets the extend end only; it is not a brake, and an unsupported rod will settle if pressure fails. The magnet is standard, ready for CMSG / DMSG / EMSG switches anywhere along the stainless barrel.
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 MAJ25X450-40S FAQ
Push at 0.5 MPa is 245.3 N and pull 206.1 N; step the supply to 0.7 MPa and those become 343.4 N and 288.5 N. The 1.0 MPa theoretical ceiling is 50 kgf. Air ports are 1/8 inch, the rod is 10 mm with an M10x1.25 thread, and the extend stroke can be set anywhere from 410 to 450 mm using the stop screw.
The barrel is stainless steel rolled onto aluminium covers, so it takes humidity, washdown mist and outdoor exposure without paint to chip or corrode. That same tube carries the piston magnet fitted as standard on every MA-series cylinder, letting CMSG, DMSG and EMSG switches clip on at any point for stroke-end or intermediate signaling.
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.
Request a Quote for Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X450-40S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.