Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X50-40S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X50-40S 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 MAJ25X50-40S
With a 40 mm trimming window, the MAJ25X50-40S lets one bore 25 cylinder serve extend positions from 50 mm down to 10 mm - set the stop with a screwdriver and lock it in. Push at 0.5 MPa is 245.3 N; halved for a 2:1 margin, it lifts about 12.5 kg vertically, which makes sizing against real part weights straightforward.
Construction is a rolled, riveted stainless tube with a 20 um hard-chrome carbon-steel rod - corrosion resistance painted minis cannot match in humid workshops. The two-way piston seal also stores grease for longer dry-running intervals, and because the magnet is standard, CMSG / DMSG / EMSG switches attach out of the box.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X50-40S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X50-40S |
|---|---|
| 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 MAJ25X50-40S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×50 | 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 MAJ25X50-40S Is Used
Pick-and-place Z strokes
Set the exact down-stroke on a slide that lifts parts of up to about 12.5 kg with a 2:1 safety margin built in.
Dispensing carriages
Fine stop adjustment suits glue or sealant heads where a repeatable short extension must be changed between product runs.
Humid wash zones
Stainless barrel and chrome-plated rod keep cycling in bottling-plant corners where painted mini cylinders rust through.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X50-40S the Right Cylinder?
Bore 25 gives 245.3 N push and 206.1 N pull at 0.5 MPa - if the job needs more, MAJ32 reaches 402.2 N; if less, MAJ20 delivers 157.0 N in a smaller envelope. Remember the stop screw only shortens the extend stroke and behaves as an end stop: if supply air fails, the piston can creep, so add a check or locking valve where a held position matters. Mount it FA (flange), LB (foot) or with I / Y knuckles; the 1/8" ports take PT by default, G or NPT on request.
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 MAJ25X50-40S FAQ
Push at 0.5 MPa is 245.3 N, pull 206.1 N; at 0.7 MPa push climbs to 343.4 N and pull to 288.5 N. Theoretical peak is 50 kgf at 1.0 MPa. Speed range is 30-800 mm/s, pressure 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi).
The barrel is stainless steel rolled onto aluminium covers, and the rod carries a 20 um hard-chrome plating, so splash, humidity and light washdown cause little trouble. The round riveted construction also keeps the installed footprint compact for the same bore.
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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