Airtac MFJ Adjustable Mini Cylinder MFJ25X225-100S
The AirTAC Airtac MFJ Adjustable Mini Cylinder MFJ25X225-100S 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 MFJ25X225-100S
Dial in your extend end-position on-site with the AirTAC MFJ25X225-100S, a JIS-standard round-body mini cylinder featuring a 100 mm adjustable stroke window (yielding a usable 125-225 mm extend). The riveted SUS304 stainless barrel and aluminium covers resist mild washdown while keeping the total envelope shorter than a comparable ISO 6432 unit.
Driven by a Ø10 mm rod and 1/8" port, this double-acting actuator delivers 245.3 N push at 0.5 MPa. The built-in magnet (-S) supports CMSG, DMSG, and EMSG switches for position sensing, while fixed TPU bumpers absorb end-of-stroke impacts. It provides a safe working load near 147 N and lifts about 12.5 kg vertically with a 2:1 margin.
Airtac MFJ Adjustable Mini Cylinder MFJ25X225-100S Technical Specifications
| Model | Airtac MFJ Adjustable Mini Cylinder MFJ25X225-100S |
|---|---|
| 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 MFJ25X225-100S
| 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 MFJ25X225-100S Is Used
Changeover Stations
Fine-tune the 125-225 mm extend reach during format changes, using the 245.3 N force to push parts into new fixtures without machining custom stops.
Trial Fit Rigs
Dial in the exact extend position on prototype assembly jigs, relying on the 1/8" port and built-in magnet to confirm end-of-travel via CMSG sensors.
Variable Position Stops
Adjust the end point on the fly for varying product lengths, letting the fixed TPU bumper absorb the impact of each 147 N safe working load cycle.
Is the Airtac MFJ Adjustable Mini Cylinder MFJ25X225-100S the Right Cylinder?
When sizing across the range, the MFJ20 provides 157 N of push force, this MFJ25 hits 245.3 N, and the MFJ32 steps up to 402.2 N (all at 0.5 MPa). The 100 mm adjuster window is ideal for trial fits and line changeovers where the exact extend position is not yet finalized, letting you fine-tune travel without swapping hardware.
Mounting options include LB foot, FA flange, and TC trunnion (no SDB). Note that the external adjuster only sets the extend endpoint—it is not a mid-stroke lock; the piston will drift on air loss, so add an external rod lock or pilot check valve to hold a suspended load.
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 MFJ25X225-100S FAQ
This 25 mm bore cylinder has a 1/8" port and a Ø10 mm rod. It generates 245.3 N push and 206.1 N pull at 0.5 MPa, or 343.4 N push and 288.5 N pull at 0.7 MPa, with a theoretical max of 50 kgf at 1.0 MPa. The 100 mm external adjuster shortens the extend stroke from the 225 mm maximum down to 125 mm.
The external adjuster mechanically limits the extend endpoint so you can set the travel distance on-site; retract remains full stroke. End-of-travel deceleration is handled by fixed TPU bumper pads, not an adjustable air cushion. The -S suffix means it has a built-in magnet for CMSG, DMSG, or EMSG switches.
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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