Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X90-50S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X90-50S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø25mm bore and 90mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ25 mm
- Stroke90 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 MAJ25X90-50S
Fifty millimetres of on-site adjustment gives the MAJ25X90-50S room to match almost any fixture in its class: turn the external stop screw and the extend stroke lands anywhere from 40 mm up to the full 90 mm. Double-acting throughout, the 25 mm bore delivers 245.3 N push and 206.1 N pull at 0.5 MPa - roughly 147 N of that is realistic working force once friction and pressure droop are priced in - climbing to 343.4 N at 0.7 MPa and 50 kgf theoretical at 1.0 MPa.
The round stainless barrel resists corrosion in wet or outdoor cells, and the hard-chromed 10 mm rod keeps seal wear low across 30-800 mm/s. Aluminium-alloy covers are rolled onto the tube, so the riveted body stays slim. A magnet is fitted as standard equipment for CMSG, DMSG and EMSG switches, and fixed anti-impact pads calm the stroke ends; for adjustable air cushioning you would step to the MACJ family instead.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X90-50S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X90-50S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 90 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 MAJ25X90-50S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×90 | 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 MAJ25X90-50S Is Used
Dosing stop on a cosmetic cream filler
Per-batch volume tweaks call for a moving stop; the 50 mm window covers it, and the stainless body survives frequent CIP wipe-downs.
Width stop on a carton erecting machine
Carton size changeovers take seconds with the stop screw instead of a cylinder swap; 245 N at 0.5 MPa holds the stop under panel push.
Web tensioner arm on a label line
The chrome-plated 10 mm rod cycles 30-800 mm/s against the dancer arm, and the magnet feeds a CMSG switch for slack alarms.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X90-50S the Right Cylinder?
Compare before you commit: a 20 mm MAJ pushes 157.0 N at 0.5 MPa and a 32 mm version manages 402.2 N, so 245.3 N places this bore mid-range for medium loads. The 50 mm window shines for sampling stations and test rigs where the dwell position changes between batches. Keep in mind the stop only sets the end of travel - it does not clamp the piston, so a gravity-drifting load needs external locking. Mount with an FA flange or LB feet, fit I or Y knuckles on the rod side, and pair the standard built-in magnet with CMSG / DMSG / EMSG switches for signalling.
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 MAJ25X90-50S FAQ
Push is 245.3 N and pull is 206.1 N at 0.5 MPa; at 0.7 MPa it reaches 343.4 N push and 288.5 N pull. The theoretical ceiling at 1.0 MPa is 50 kgf. Operating band is 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s.
Yes. Beyond washdown and outdoor use, the stainless tube combined with a hard-chrome plated rod resists scratches and pitting that shorten seal life on painted minis, while the riveted round body keeps installation space small. The built-in magnet is standard, ready for CMSG / DMSG / EMSG switches.
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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