Airtac MFJ Adjustable Mini Cylinder MFJ25X225-75S
The AirTAC Airtac MFJ Adjustable Mini Cylinder MFJ25X225-75S is a genuine double acting, adjustable stroke JIS-standard round-body mini air cylinder with a Ø25mm bore and 225mm stroke, 1/8" air ports and a SUS304 stainless-steel barrel for mildly corrosive environments. For the same bore and stroke it is shorter than an ISO 6432 cylinder, saving mounting space.
- BoreØ25 mm
- Stroke225 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke
- Rod threadM10×1.25
- CushionFixed TPU 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 MFJ Adjustable Mini Cylinder MFJ25X225-75S
Trim the extend stroke by up to 75 mm directly at the fixture with the MFJ25X225-75S, giving you a usable extend range of 150 to 225 mm without swapping hardware. This JIS-standard round-body mini cylinder relies on a SUS304 stainless barrel and riveted aluminium covers, delivering a body that is physically shorter than a comparable ISO 6432 unit to save valuable mounting length.
Driven by filtered air through a 1/8" port, the 25 mm bore generates 245.3 N of push force at 0.5 MPa. The integrated -S magnet enables CMSG, DMSG, or EMSG switches for position sensing, while fixed TPU bumper pads absorb end-of-stroke impacts. For vertical tasks, expect a safe lift of about 12.5 kg with a 2:1 margin.
Airtac MFJ Adjustable Mini Cylinder MFJ25X225-75S Technical Specifications
| Model | Airtac MFJ Adjustable Mini Cylinder MFJ25X225-75S |
|---|---|
| Series | MFJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 225 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 TPU bumper pads |
| Max standard stroke | Up to 500 mm |
Specifications follow the official AirTAC MF/MFC (JIS-standard) datasheet. Barrel: SUS304 stainless steel; covers: aluminum alloy (round-body, riveted rolling-packed construction). Thread options: PT (blank) / G / NPT.
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 MFJ Adjustable Mini Cylinder MFJ25X225-75S
| MFJ | JIS-standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×225 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
MF-family variants: MF / MFC (double acting ±cushion), MSF / MTF (single acting push / pull), MFD / MFCD (double rod ±cushion), MFJ / MFCJ (adjustable stroke ±cushion). Back covers CA / U / CM. Mounting LB / FA / SDB / TC.
Where the Airtac MFJ Adjustable Mini Cylinder MFJ25X225-75S Is Used
Changeover Dial-In
Dial in the extend position during product changeovers, using the 75 mm window to hit new stop locations without machining fresh spacers.
Prototype Fit-Up
Test multiple extend endpoints on a prototype rig, sliding the 150 to 225 mm usable range until the kinematic motion is perfect.
Variable Positioning Stops
Push lightweight jigs into place with 245.3 N of force, adjusting the final contact point on the fly as wear parts shift dimensions.
Is the Airtac MFJ Adjustable Mini Cylinder MFJ25X225-75S the Right Cylinder?
Choose the 25 mm bore for mid-range thrust: it steps up from the 157 N push of an MFJ20 yet stays below the 402.2 N output of an MFJ32 at 0.5 MPa. The 75 mm adjustable window is ideal for trial fits and line changeovers where the exact extend position is unknown, letting you dial in the end point on site.
Remember that the external adjuster only sets the extend endpoint—it is not a mid-stroke lock. The piston will drift if air pressure drops, so fit an external rod lock or pilot check valve for suspended loads. Mounting options include LB foot, FA flange, and TC trunnion (no SDB), and the built-in magnet is ready for reed or electronic sensors.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Back cover (CA/U/CM) & mount (LB/FA/SDB/TC)
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 Use correct back cover (CA/U/CM) & mount (LB/FA/SDB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac MFJ Adjustable Mini Cylinder MFJ25X225-75S FAQ
This 25 mm bore cylinder features a 1/8" air port and a 10 mm rod with an M10x1.25 thread. At 0.5 MPa it pushes with 245.3 N and pulls with 206.1 N. At 0.7 MPa the push is 343.4 N and pull is 288.5 N. The theoretical maximum force is 50 kgf at 1.0 MPa.
An external adjuster shortens the extend stroke by up to 75 mm on site, giving a usable extend window of 150 to 225 mm; retract remains full. End-of-stroke deceleration is handled by fixed TPU bumper pads, not an adjustable air cushion. The included -S magnet allows CMSG, DMSG, and EMSG sensors to track piston position.
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 MFJ Adjustable Mini Cylinder MFJ25X225-75S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.