Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X90-40S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X90-40S 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 MAJ25X90-40S
A 40 mm tuning window makes the MAJ25X90-40S a fit-and-forget pick for fixtures where the final stroke only shows itself during commissioning. This 25 mm bore, 90 mm stroke mini is double-acting, and the external stop screw shortens the extend travel - it never stretches it. Size from real numbers: 245.3 N push and 206.1 N pull at 0.5 MPa, 343.4 N push at 0.7 MPa, 50 kgf theoretical peak at 1.0 MPa. In practice that means it hoists about 12 kg vertically once a 2:1 margin is kept.
Build quality is where the MA earns its keep: a riveted stainless-steel round body, hard-chrome plated rod and grease-retaining heterogeneous piston seals that outlast painted minis in humidity and light washdown. The magnet comes fitted as standard, so DMSG, EMSG or CMSG switches snap on for position signals. Fixed bumper pads soften each stroke end; they are a deceleration pad, not the adjustable air cushion found on a MACJ.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X90-40S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X90-40S |
|---|---|
| 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 MAJ25X90-40S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×90 | 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 MAJ25X90-40S Is Used
SMT pallet transfer unit
Connector housings move between pallets at up to 800 mm/s; the 40 mm window absorbs fixture tolerance so no re-drilling is needed.
Saw stop gauge on aluminium extrusion
The stop screw sets cut length per profile; stainless body and chrome rod handle coolant mist without pitting.
Battery tab riveting press
About 12 kg of vertical lift capacity with margin makes this bore right for light rivet or clinch operations on pouch cells.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X90-40S the Right Cylinder?
Step down to the 20 mm bore (157.0 N at 0.5 MPa) for lighter jobs, or up to 32 mm (402.2 N at 0.5 MPa) if the load creeps up. The 40 mm window is generous enough to stroke-match a replaced cylinder on an existing line. Be aware the adjuster is a travel stop, not a lock - a suspended load will still sag if pressure is lost. Choose FA flange or LB foot plates, add I or Y rod knuckles, and remember the adjustable variant offers no SDB. With the standard magnet, CMSG / DMSG / EMSG switches give position feedback from day one.
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 MAJ25X90-40S FAQ
At 0.5 MPa: 245.3 N push, 206.1 N pull. At 0.7 MPa: 343.4 N push, 288.5 N pull. Theoretical maximum force at 1.0 MPa is 50 kgf. Pressure range is 0.15-1.0 MPa (22-145 psi) with speeds of 30-800 mm/s.
No. Every MAJ ships with the magnet already inside the piston as standard equipment, so AirTAC CMSG, DMSG and EMSG switches drop straight onto the barrel for end-of-stroke or position signalling - no special-order piston required.
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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