
The AirTAC Airtac MFJ Adjustable Mini Cylinder MFJ25X110-50 is a genuine double acting, adjustable stroke JIS-standard round-body mini air cylinder with a Ø25mm bore and 110mm 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.
Dial in your extend stroke on-site with the AirTAC MFJ25X110-50, a JIS-standard round-body mini cylinder built with a SUS304 stainless barrel and riveted aluminium covers. An external adjuster lets you shorten the forward stroke by up to 50 mm, giving a usable extend range of 60 to 110 mm while keeping full retract. This double-acting actuator pushes with 245.3 N and pulls with 206.1 N at 0.5 MPa, featuring a 10 mm rod, M10x1.25 male thread, and a 1/8" port.
For the same bore and stroke, this riveted body is noticeably shorter than an ISO 6432 cylinder, saving valuable mounting length without conforming to that standard. The fixed TPU bumper pads decelerate the stroke end, operating at 30-800 mm/s across a 0.15-1.0 MPa range. Based on the 0.5 MPa push force, it handles a safe working load of about 147 N, lifting roughly 12.5 kg vertically with a 2:1 margin. Note this SKU lacks a magnet and cannot take a sensor; the -S variant is required for CMSG, DMSG, or EMSG switches.
| Model | Airtac MFJ Adjustable Mini Cylinder MFJ25X110-50 |
|---|---|
| Series | MFJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 110 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. |
| ×110 | 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.
Fine-tune the 60 to 110 mm extend position during product changeovers to set new push-off distances without swapping hardware.
Dial in the exact forward stroke on prototype assemblies, using the 245.3 N push force to seat components gently before locking the adjuster.
Adjust the end-of-stroke bumping point on the fly for light pressing tasks, relying on the fixed TPU pads to absorb the 12.5 kg equivalent impact.
When sizing this series, compare the real 0.5 MPa figures: the MFJ20 delivers 157 N of push force, this MFJ25 provides 245.3 N, and the larger MFJ32 outputs 402.2 N. The 50 mm adjustable window is ideal for trial fits and line changeovers where the exact end position is not yet final, letting you fine-tune without buying a new cylinder or adding external stops. Mounting options include LB foot, FA flange, and TC trunnion (no SDB or back-cover here). Remember that a plain cylinder drifts on air loss; the bumper only decelerates and never locks the load, so specify an external rod lock or pilot check valve if you need to hold position vertically.
Quick checklist
This 25 mm bore cylinder uses a 1/8" port and a 10 mm 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 50 mm on-site, giving a usable forward range of 60 to 110 mm, while retract remains full. The fixed TPU bumper only decelerates the end of stroke; it is not a lock, so the piston will drift if air pressure is lost.
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