Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X15-20S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X15-20S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø25mm bore and 15mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ25 mm
- Stroke15 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 MAJ25X15-20S
Bore 25 muscle in a 15 mm package: the MAJ25X15-20S pushes 245.3 N at 0.5 MPa, and an external stop screw lets you trim the extend stroke inside the ordered 20 mm window. Plan around 147 N of that rating for real work, or count on a vertical lift near 12 kg with a 2:1 safety margin.
Under the covers it is a rolling-packed stainless barrel with aluminium covers and a stainless block, so mild corrosion and washdown do not end its life the way humidity kills coated-steel alternatives. The 10 mm chrome rod runs in dual-compound seals that bank grease for long intervals, fixed bumper pads soften end-of-stroke shock (no adjustable air cushion here - that is the MAC family), and the standard magnet accepts CMSG, DMSG and EMSG switches. Operating window: 0.15-1.0 MPa (22-145 psi), 30-800 mm/s.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X15-20S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X15-20S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 15 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 MAJ25X15-20S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×15 | 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 MAJ25X15-20S Is Used
Gripper pad cycle
Cycling a pneumatic gripper pad on a pick-and-place arm for syringe barrels; 15 mm travel matches the grip opening exactly.
Label press hold-down
Holding labels flat during a hot-stamp press; the 20 mm trim sets the exact contact height for each label format.
Mast flag trigger
Tripping a proximity flag on an electric pallet truck mast, with an EMSG switch reading the adjusted stop position.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X15-20S the Right Cylinder?
A 20 mm window on a 15 mm base stroke gives fine positional tuning for fixture work, but the screw is only an extend-side end stop, never a brake - if pressure is lost a raised piston keeps moving, so support the load another way. Compare bores: the 20 mm MAJ gives 157.0 N at 0.5 MPa, this 25 mm body 245.3 N, and the 32 mm version 402.2 N.
Fit an FA flange for face mounting or an LB foot underneath; I and Y rod knuckles cover swivelling tool links, and the bore 25 port is 1/8" in PT as standard with G and NPT variants available.
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 MAJ25X15-20S FAQ
It delivers 245.3 N push and 206.1 N pull at 0.5 MPa, 343.4 N push and 288.5 N pull at 0.7 MPa, and up to 50 kgf theoretically at 1.0 MPa. Feed it air filtered to 40 um at 0.15-1.0 MPa (22-145 psi) and it will run from 30 to 800 mm/s.
The stop screw shortens extension anywhere inside the 20 mm window, so one cylinder covers several die heights. Add the riveted stainless body, chrome-plated rod and standard magnet (CMSG / DMSG / EMSG ready), and it survives damp lines better than coated minis.
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.
Request a Quote for Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X15-20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.