
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X30-10 is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø25mm bore and 30mm 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 the extend end by up to 10 mm on site with the external adjuster, while the needle variable air cushion at both ends soaks up high-speed shock. This AirTAC MFCJ25X30-10 is a double-acting, JIS-standard round-body mini cylinder built with a SUS304 stainless barrel and riveted aluminium covers, offering a shorter mounting length than an ISO 6432 unit of the same bore and stroke.
In the 25 mm bore class it delivers 245.3 N push and 206.1 N pull at 0.5 MPa, peaking at a 50 kgf theoretical max. The 1/8" port and M10x1.25 male rod thread handle speeds of 30-800 mm/s. As a practical buyer insight, expect a safe working load of about 147 N, which lifts roughly 12.5 kg vertically with a 2:1 margin. Note this SKU lacks the -S magnet, so it cannot take CMSG/DMSG/EMSG sensors.
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ25X30-10 |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 30 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. |
| ×30 | 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.
Use the 10 mm extend adjuster to dial in exact contact points during short-stroke assembly trials without remachining stops, relying on the 245.3 N push force to seat light parts.
Variable air cushions absorb the end-of-stroke shock on rapid 30 mm extend cycles, quietly routing small packages while maintaining a compact footprint.
Lift or push items up to 12.5 kg vertically with a 2:1 safety margin, tweaking the end position on the fly to accommodate varying carton sizes.
When sizing across the range, the MFCJ20 provides 157 N of push force at 0.5 MPa, while the larger MFCJ32 jumps to 402.2 N. This 25 mm bore sits in the middle at 245.3 N, making it ideal when you need moderate force plus the ability to fine-tune the extend position during high-speed changeovers or shock-sensitive trial fits. Mounting options include LB foot, FA flange, and TC trunnion (no SDB or back-cover here).
Remember the cushion only decelerates the piston near the stroke end; it is not a brake. Because a plain cylinder drifts on air loss, add an external rod lock or pilot-operated check valve if the load must be held. For position sensing, you must specify the -S magnet version to use CMSG, DMSG, or EMSG switches.
Quick checklist
This 25 mm bore cylinder has a 1/8" port and delivers 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.
The external adjuster shortens the extend stroke by up to 10 mm on site (usable extend 20-30 mm), while the variable air cushion decelerates the piston at both ends. This specific SKU lacks the -S magnet, so it cannot accept CMSG/DMSG/EMSG switches; choose the -S variant for sensing.
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