Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X50-20S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X50-20S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø25mm bore and 50mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ25 mm
- Stroke50 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 MAJ25X50-20S
Compact fixtures get a tunable stroke without shims: the MAJ25X50-20S works double-acting and its external adjuster shortens the extend stroke across a 20 mm window, so the endpoint sits anywhere between 30 mm and the ordered 50 mm. At 0.5 MPa the bore 25 barrel pushes 245.3 N (343.4 N at 0.7 MPa); plan fixtures around 147 N of working force to leave headroom.
Stainless round barrel, aluminium covers and a hard-chrome plated 10 mm rod make the body at home near coolant splash and in damp workshops. The stroke ends meet fixed anti-impact pads - a deceleration feature, not an adjustable air cushion - and the built-in magnet is standard, letting CMSG, DMSG or EMSG reed switches bolt straight on. Pressure band 0.15-1.0 MPa (22-145 psi); speed 30-800 mm/s.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X50-20S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X50-20S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 50 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 MAJ25X50-20S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×50 | 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 MAJ25X50-20S Is Used
Small bin gate control
Opens and closes a gravity bin gate at a packing bench; the 20 mm window sets the gate opening exactly for the carton size in play.
Cap press hold-down
Presses bottle caps on a small filling line with air applied throughout the cycle; the stop screw tuned to 30 mm keeps the pad bottoming consistently.
Presence confirm station
Confirms a part is seated in a machining pallet before cycle start; a DMSG switch on the built-in magnet signals the trimmed endpoint.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X50-20S the Right Cylinder?
Against neighbors: bore 20 pushes 157.0 N at 0.5 MPa and bore 32 pushes 402.2 N, bracketing this model's 245.3 N. The 20 mm window means the extend endpoint lands anywhere from 30 mm to the full 50 mm once the stop screw is set; travel never grows beyond 50 mm. Choose FA flange or LB foot for the body and I or Y knuckle for the rod. No load holding is built in - the trimmer is a hard stop only, so support the part with a clamp when pressure drops.
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 MAJ25X50-20S FAQ
At 0.5 MPa expect 245.3 N on extend and 206.1 N on retract; at 0.7 MPa extend force is 343.4 N with 288.5 N retract; bore 25 tops out theoretically at 50 kgf at 1.0 MPa.
No. The MAJ carries fixed anti-impact pads that soften stroke-end deceleration; if you need tunable air cushioning, AirTAC's MAC adjustable series is the related choice. The -20 adjuster on this model sets the extend endpoint, not the cushion.
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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.
Fast Reply
Most inquiries answered within 7-8 hours.
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