
The AirTAC Airtac MFJ Adjustable Mini Cylinder MFJ25X175-10 is a genuine double acting, adjustable stroke JIS-standard round-body mini air cylinder with a Ø25mm bore and 175mm 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.
Trimming the extend stroke by up to 10 mm on site, the AirTAC MFJ25X175-10 sets its usable forward travel between 165 and 175 mm via an external adjuster. This JIS-standard round-body mini cylinder features a SUS304 stainless barrel and riveted aluminium covers, yielding a mounting envelope noticeably shorter than a comparable ISO 6432 unit for the same 25 mm bore and 175 mm stroke. It operates as a double-acting drive on a 1/8" port, delivering 245.3 N of push force at 0.5 MPa.
The fixed TPU bumper pads absorb end-of-stroke impacts across the 30-800 mm/s speed range, while the absence of a -S suffix means this specific SKU lacks a piston magnet and cannot host CMSG, DMSG or EMSG sensors. For sizing context, it provides a safe working load of roughly 147 N (about 60% of the 0.5 MPa push figure) and lifts approximately 12.5 kg vertically with a 2:1 safety margin.
| Model | Airtac MFJ Adjustable Mini Cylinder MFJ25X175-10 |
|---|---|
| Series | MFJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 175 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.
| 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.
| MFJ | JIS-standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×175 | 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.
Dial in the 165-175 mm extend position during product format changes without machining new hard stops, using the 245.3 N push force to shift light tooling.
Validate exact end-of-travel points on prototype assemblies where the final stroke length is still unknown, relying on the 12.5 kg vertical lift capacity.
Act as an adjustable mechanical stop for light clamping tasks, fine-tuning the 10 mm window on site to accommodate part tolerances.
Choose this 25 mm bore when you need more reach than the 157 N push of an MFJ20 but lack the physical space for the 402.2 N MFJ32. The 10 mm adjustable window is ideal for trial fits and line changeovers where the exact end position is not finalised, letting you fine-tune the extend stop without buying a new cylinder. Retract travel remains fixed at the full 175 mm.
Mounting options include LB foot, FA flange and TC trunnion (there is no SDB or back-cover option on this build). Remember that the bumper pads only decelerate the stroke end; the piston drifts on air loss, so fit an external rod lock or pilot check valve if you need to hold a load. To add sensing, switch to the -S magnet variant.
Quick checklist
This 25 mm bore cylinder uses a 1/8" port and a 10 mm piston rod with an M10x1.25 male thread. It generates 245.3 N push and 206.1 N pull at 0.5 MPa, 343.4 N push and 288.5 N pull at 0.7 MPa, with a theoretical maximum of 50 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 10 mm on site; it does not add stroke beyond the 175 mm base and retract remains full. The fixed TPU bumpers only decelerate the end of travel, so the piston drifts on air loss and cannot hold a load without an external rod lock.
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Covers non-human-caused product damage.
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