Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X75-20S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X75-20S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø25mm bore and 75mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ25 mm
- Stroke75 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 MAJ25X75-20S
On lines where parts vary between batches, a 20 mm window over 75 mm stroke lets technicians re-zero the extend position of the MAJ25X75-20S in minutes using the external stop screw - no cylinder swap, no shims. Both directions are air powered. Supply 0.15-1.0 MPa (22-145 psi) of filtered air and it cycles at 30-800 mm/s, pushing 245.3 N at 0.5 MPa and 343.4 N when pressed to 0.7 MPa.
Build quality leans on a stainless round barrel riveted to aluminium covers, a 20 um hard-chrome rod and a two-way piston seal that holds grease in service. Work the numbers before sizing: about 147 N of usable thrust at 0.5 MPa, or near 12 kg of vertical lift once a 2:1 margin is applied. The standard magnet feeds CMSG / DMSG / EMSG switches for cycle confirmation, and fixed bumpers cushion both ends of travel.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X75-20S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X75-20S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 75 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 MAJ25X75-20S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×75 | 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 MAJ25X75-20S Is Used
Press-fit anvil
Light press station seating bushings into housings on a small assembly press, with the stop set for an exact anvil height.
Dosing valve actuator
Opening a pinch valve on a chemical dosing skid where the stem must stop short of full travel to meter flow.
Tray transfer pusher
Shifting SMT component trays between magazine rails on a loading tower, with an EMSG switch confirming the park position.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X75-20S the Right Cylinder?
Compare across the range: bore 20 offers 157 N, this bore 25 reaches 245.3 N, and bore 32 scales to 402.2 N at 0.5 MPa, so pick by load plus friction rather than the rating alone. Remember the trim screw defines the extend limit - it is not a mid-stroke lock, and a de-pressurised rod can settle under load. FA flange or LB foot mounting plus I / Y knuckles suit most frames; at 75 mm stroke, guide any lateral movement externally.
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 MAJ25X75-20S FAQ
Extend 245.3 N and retract 206.1 N at 0.5 MPa; extend 343.4 N and retract 288.5 N at 0.7 MPa; 50 kgf theoretical maximum at 1.0 MPa. Fittings use the 1/8" port, the hard-chrome rod is 10 mm with an M10x1.25 thread, and approved supply spans 0.15-1.0 MPa (22-145 psi).
No. A magnet is fitted to every MA piston as standard equipment, so CMSG, DMSG and EMSG switches attach to the barrel groove and read end positions straight away.
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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