Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X450-50S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X450-50S 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 MAJ25X450-50S
A long-reach pusher for machines that need 450 mm of travel yet still want the stroke set on the shop floor: the MAJ25X450-50S runs double-acting and its external stop screw pulls the extend endpoint back anywhere inside a 50 mm window, from the ordered 450 mm down to 400 mm. At bore 25 the barrel pushes 245 N (245.3 N exact) at 0.5 MPa and 343 N at 0.7 MPa, so plan on about 147 N of real working force per cylinder rather than the full rating. Because 450 mm is beyond the standard 300 mm catalog length for bore 25, this is a built-to-order stroke.
The round body is a riveted stainless-steel barrel with a hard-chrome plated 10 mm rod and aluminium-alloy covers, so damp washdown corners do not chew it up the way painted minis suffer. Fixed anti-impact pads soften both stroke ends (they decelerate only, they are not adjustable air cushions), and the built-in magnet is standard, letting CMSG, DMSG or EMSG switches clip on without special orders. Air 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X450-50S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X450-50S |
|---|---|
| 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 MAJ25X450-50S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×450 | Stroke length in mm. |
| -50 | 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 MAJ25X450-50S Is Used
Case packer gate pusher
Sweeps cartons the final 450 mm into a transfer lane on a corrugated case line; the stop screw brings the endpoint to 400 mm without reshimming the bracket.
Deep wash tank ejector
Pushes part baskets out of a rinse tank where constant splash rewards the stainless barrel over a painted mini body.
Curing oven door drive
Slides a light insulated door on a benchtop curing oven; 245 N at 0.5 MPa overcomes seal drag and the magnet confirms the closed position.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X450-50S the Right Cylinder?
If 245 N at 0.5 MPa is more than the job needs, bore 20 delivers 157.0 N; if the load grows, bore 32 steps up to 402.2 N at the same pressure. With 450 mm of extension on a 10 mm rod, keep side loads off the rod and guide the part in its own bearings - long strokes bend easily. FA flange and LB foot are the catalog mounts, I and Y knuckles handle the rod end, and the magnet is fitted as standard for CMSG/EMSG switching. Remember the stop screw sets where the stroke ends; it does not lock the piston in place when air is lost.
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 MAJ25X450-50S FAQ
At 0.5 MPa the MAJ25X450-50S pushes 245.3 N and pulls 206.1 N; at 0.7 MPa push climbs to 343.4 N (pull 288.5 N), with 50 kgf the theoretical maximum at 1.0 MPa.
No - standard catalog strokes for bore 25 stop at 300 mm, so 450 mm is made to order. The stainless barrel with hard-chrome rod is chosen exactly for such exposed runs, where painted minis corrode. Port is 1/8" and rod thread is M10x1.25.
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 MAJ25X450-50S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.