Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X300-50S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X300-50S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø25mm bore and 300mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ25 mm
- Stroke300 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 MAJ25X300-50S
Long travel in a slim package: MAJ25X300-50S spans the full 300 mm standard stroke inside a riveted stainless round barrel far more compact than bolted minis, and its 50 mm window is the widest trim in the range. At 0.5 MPa it pushes 245.3 N and retracts with 206.1 N; at 0.7 MPa those climb to 343.4 N and 288.5 N.
Corrosion resistance is built in - stainless tube plus a 20 um hard-chrome plated rod - and it runs 0.15-1.0 MPa (22-145 psi) at 30-800 mm/s with the magnet fitted as standard for CMSG, DMSG or EMSG switches. For sizing, figure about 12 kg of vertical lift at 0.5 MPa (the 25 kg theoretical figure cut in half) or roughly 147 N of usable horizontal push.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X300-50S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X300-50S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 300 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 MAJ25X300-50S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×300 | 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 MAJ25X300-50S Is Used
Reject pusher after a checkweigher
Pushes underweight packs off the belt; with roughly 147 N of usable push at 0.5 MPa, small packs move aside briskly at line speed.
Telescoping cover drive on a small CNC retrofit
300 mm of travel opens a light cover stack; the 50 mm trim window lets you match cover height without swapping the cylinder.
Tray push-off on a pharmaceutical line
The stainless body suits wiped-down areas, and DMSG switches (magnet standard) confirm full extend before the next blister tray releases.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X300-50S the Right Cylinder?
Bore neighbours: 20 mm gives 157.0 N and 32 mm gives 402.2 N at 0.5 MPa - choose those when the duty falls clearly below or above this model's 245.3 N. Because the adjustment screw is purely an extend-stroke stop, position holding after a dropped supply needs an external clamp or check valve, not the cylinder itself. Foot (LB) or flange (FA) mounting plus the built-in magnet with an EMSG switch suits long-travel gates and feeders; keep side loads off the 10 mm rod on this 300 mm stroke.
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 MAJ25X300-50S FAQ
Count on 245.3 N forward and 206.1 N return at 0.5 MPa, rising to 343.4 N and 288.5 N at 0.7 MPa; the theoretical maximum for this 25 mm bore at 1.0 MPa is 50 kgf. Ports are 1/8", the rod is 10 mm with an M10x1.25 thread, and speed spans 30-800 mm/s.
No - the stop screw only shortens the extend stroke, by up to 50 mm below the ordered 300 mm, and it never adds travel. It is a mechanical stop rather than a lock, so fit an external brake or valve if the load must stay put when supply pressure fails.
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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.
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Most inquiries answered within 7-8 hours.
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