Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X30-20S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X30-20S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø25mm bore and 30mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ25 mm
- Stroke30 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 MAJ25X30-20S
A compact punch for close quarters, the MAJ25X30-20S keeps bore 25 force in a body barely longer than its 30 mm stroke. The stop screw trims extension down to about 10 mm, ideal where tooling clearance is tight, and the numbers stay healthy: 245 N push, 206 N pull at 0.5 MPa, or around 147 N of dependable work - enough to lift about 12 kg vertically at half rating.
Nothing is wasted in the build: a riveted stainless-steel barrel, aluminium covers, a 10 mm hard-chrome rod with M10x1.25 male thread, and fixed anti-impact pads that deaden the short stroke's end knock without pretending to be air cushions. Coolant mist around machine tools rusts painted minis quickly; this stainless body does not care. The piston magnet is standard equipment, so a CMSG switch reads position from day one. 0.15-1.0 MPa (22-145 psi), 30-800 mm/s, 1/8" ports.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X30-20S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X30-20S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 30 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 MAJ25X30-20S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×30 | Stroke length in mm. |
| -20 | 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 MAJ25X30-20S Is Used
Dowel-pin press-fit in jig and fixture builds
About 147 N of working force at 0.5 MPa seats M6 dowels in aluminium fixtures, with the stroke trimmed so the ram never bottoms out.
Tool-drawer position flag with CMSG sensing
A 30 mm advance moves a flag past the switch; the standard piston magnet means no special-order cylinder for the sensor.
Clamp slide on a retrofitted CNC vise
Short stroke, high hold: 245 N push keeps small workpieces seated while the stainless barrel shrugs off coolant splash.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X30-20S the Right Cylinder?
If 245 N at 0.5 MPa is more than the job needs, the 16 mm bore gives 100 N in the same round format; if the punch meets resistance, 32 mm lifts output to 402 N. The trim window sets where the rod stops, not where it stays - an unpressurised piston will still move, so use a mechanical clamp for positive holding. FA flange and LB foot carry the body; I and Y knuckles adapt the rod. PT thread is standard, G or NPT on request, ports 1/8" throughout.
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 MAJ25X30-20S FAQ
At 0.5 MPa: 245 N push and 206 N pull. At 0.7 MPa: 343 N push and 289 N pull. Peak theoretical force at 1.0 MPa is 50 kgf. The extend stroke can be trimmed anywhere inside the 20 mm window, down to roughly 10 mm.
FA flange or LB foot bolts the body down, and I or Y rod knuckles link the 10 mm chrome-plated rod to your tooling. The short 30 mm body was designed for cramped spacing, and ports are 1/8".
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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