
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X25-10 is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø25mm bore and 25mm 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 exact end positions and absorb end-of-stroke shock with the AirTAC MFCJ25X25-10, a JIS-standard round-body mini cylinder built with a SUS304 stainless barrel and riveted aluminium covers. An external adjuster shortens the extend stroke by up to 10 mm on-site, giving a usable 15-25 mm extend window, while needle variable air cushions at both ends soak up high-speed impact for smooth 30-800 mm/s operation.
Delivering 245.3 N push force at 0.5 MPa through a 1/8" port, this double-acting actuator provides a safe working load of about 147 N and lifts roughly 12.5 kg vertically with a 2:1 margin. Its riveted body is shorter than an ISO 6432 cylinder for the same 25 mm stroke, saving mounting length. Note this SKU lacks a magnet, so it cannot take CMSG/DMSG/EMSG switches.
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ25X25-10 |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 25 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| 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 | Variable air cushion, both ends |
| 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.
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×25 | 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 15-25 mm extend stroke by up to 10 mm on-site to hit exact sensor probe contact points without remachining stops.
Drive small package diverters with 245.3 N push force while the variable air cushion silently absorbs high-speed return shocks.
Perfect for changeovers where the exact extend position is unknown; dial in the stroke and set the needle cushion for delicate part seating.
When sizing this adjustable family, compare real thrust: the MFCJ20 provides 157 N push at 0.5 MPa, this MFCJ25 hits 245.3 N, and the larger MFCJ32 delivers 402.2 N. Choose the 25 mm bore when you need roughly 147 N of safe working force in a compact footprint. The 10 mm adjustable window is perfect for trial fits where the exact extend point and end-of-stroke deceleration both need field tuning.
Remember the air cushion only decelerates the piston near the end of travel; it is not a brake. If the load must hold position on air loss, add an external rod lock or pilot check valve. For mounting, use LB foot, FA flange, or TC trunnion brackets, and note that no back-cover or SDB mount exists on this build.
Quick checklist
This 25 mm bore cylinder uses a 1/8" port and generates 245.3 N push / 206.1 N pull at 0.5 MPa, and 343.4 N push / 288.5 N pull at 0.7 MPa. The theoretical maximum force is 50 kgf at 1.0 MPa.
This specific SKU lacks a magnet, so it cannot accept CMSG, DMSG, or EMSG switches; you need the -S variant for sensing. The external adjuster shortens the extend stroke by up to 10 mm, but it only sets the end position and does not lock the piston mid-stroke.
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