Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X80-50S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X80-50S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø25mm bore and 80mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ25 mm
- Stroke80 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 MAJ25X80-50S
Built on a riveted stainless round barrel with a hard-chromed 10 mm rod, the MAJ25X80-50S is a double-acting mini cylinder whose extend stroke can be wound back on site by up to 50 mm with an external stop screw. Air works both ways: 245 N of push and 206 N of pull at 0.5 MPa, inside a 0.15-1.0 MPa (22-145 psi) operating band. Fixed anti-impact pads ease the piston into each end of travel, softening the landing without acting as an adjustable air cushion.
Plan on roughly 147 N of that 245 N rating for real work at 0.5 MPa - a sensible margin that covers lifting jigs of about 12 kg vertically once the 25 kg theoretical lift is halved for a 2:1 factor. Every unit carries its magnet as standard, so CMSG, DMSG or EMSG switches snap straight onto the barrel without a special-order piston.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X80-50S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X80-50S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 80 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 MAJ25X80-50S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×80 | 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 MAJ25X80-50S Is Used
Bottle-line reject gate
Shortens the throw to kick off-spec bottles off a food-line conveyor, where the stainless barrel shrugs off repeated washdown.
Fixture clamp on a drill jig
Closes a swing clamp over drill bushings; 147 N of usable force at 0.5 MPa holds steel parts without marking them.
Slide with end-of-travel sensing
Drives a small parts slide while a DMSG switch confirms full extension of the trimmed stroke, no special magnet needed.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X80-50S the Right Cylinder?
If 245 N at 0.5 MPa is more than the task needs, the bore 20 MAJ gives 157 N push at the same pressure; step up to bore 32 when 402 N is required. The stop screw is a mechanical end stop for extension only - it is not a mid-stroke lock, so the rod can still drift if air is lost. Mount on an FA flange or LB foot, and add an I or Y rod knuckle where the load hinges.
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 MAJ25X80-50S FAQ
At 0.5 MPa it pushes 245 N and pulls 206 N; at 0.7 MPa those figures rise to 343 N push and 289 N pull. Theoretical maximum force at 1.0 MPa is 50 kgf. Supply 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s. Air ports are 1/8 inch (PT, G or NPT thread) and the rod nose thread is M10x1.25.
An external stop screw shortens the extend stroke anywhere within the ordered 50 mm window; it never lengthens travel past the 80 mm nominal stroke. It is a mechanical end stop, not a load-holding brake - with air off, the piston can still be pushed back. Fixed bumper pads absorb the landing at each end.
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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