Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X200-40S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X200-40S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø25mm bore and 200mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ25 mm
- Stroke200 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 MAJ25X200-40S
A 40 mm tuning band on a 200 mm stroke makes the MAJ25X200-40S a fit-and-forget answer for feed stations that need repeatable short shots from one cylinder. It is double-acting, so air drives the rod both out and back, and an external stop screw trims the extend stroke anywhere inside the 40 mm window without changing parts. At 0.5 MPa the bore 25 piston pushes 245 N (about 25 kgf), enough for clamping light aluminium brackets or ejecting small parts.
The stainless round barrel and hard-chromed 10 mm rod stand up to splash and humidity far better than painted minis, while the fixed anti-impact pad softens arrival at each stroke end - it decelerates, it is not an adjustable cushion. Every unit ships with the magnet already built in, so a CMSG, DMSG or EMSG switch snaps on for end-of-stroke signals. Plan on roughly 147 N of real work at 0.5 MPa rather than the full 245 N rating.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X200-40S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X200-40S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 200 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 MAJ25X200-40S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×200 | 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 MAJ25X200-40S Is Used
Packaging line reject pusher
The 40 mm trim window lets the MAJ25X200-40S flick mislabelled cartons off a conveyor at one fixed point, with 245 N of push at 0.5 MPa clearing the belt every cycle.
Fixture clamp on a drilling jig
Clamping steel plates before drilling needs steady, repeatable force - the 147 N working figure leaves margin, and the hard-chrome rod shrugs off coolant mist.
Stroke-checked ejection station
With the built-in magnet and a DMSG switch the controller confirms full extend before the next part is released, cutting misload downtime.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X200-40S the Right Cylinder?
If 245 N at 0.5 MPa is more than the job needs, the bore 20 version delivers 157 N under the same pressure; step up to bore 32 for 402 N when parts get heavier. Remember the stop screw is a mechanical end position, not a lock - on air loss the rod still drifts, so support the load separately. The 200 mm stroke is long for a mini, so guide side loads externally; FA flange or LB foot mounting, plus I or Y rod knuckles, covers most fixtures. Non-standard strokes beyond the 300 mm cap for this bore are made to order.
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 MAJ25X200-40S FAQ
At 0.5 MPa it pushes 245.3 N and pulls 206.1 N; at 0.7 MPa those figures rise to 343.4 N push and 288.5 N pull. The theoretical ceiling for bore 25 at 1.0 MPa is 50 kgf. Operating pressure runs 0.15-1.0 MPa (22-145 psi) and speed 30-800 mm/s.
An external stop screw shortens the extend stroke to any point within the ordered 40 mm window - turn it in for a shorter shot, out for longer. It acts as a mechanical end stop only, so it does not hold the rod against drifting when air pressure is lost. Fixed bumper pads at both ends damp the arrival impact.
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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