
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X100-10S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø25mm bore and 100mm 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.
Trim the extend stroke by up to 10 mm on site with this adjustable-stroke, variable-cushion JIS-standard round-body mini cylinder. The built-in needle air cushion at both ends soaks up high-speed shock, while the SUS304 stainless barrel and riveted aluminium covers resist mild corrosion and washdowns. As a double-acting actuator, it delivers 245.3 N of push force at 0.5 MPa and features a 1/8" port.
Because the MF body is shorter than an ISO 6432 cylinder for the same 25 mm bore and 100 mm stroke, it saves valuable mounting length. The -S suffix means a piston magnet is present for CMSG, DMSG or EMSG switches. For sizing, expect a safe working load of roughly 147 N, meaning it lifts about 12.5 kg vertically with a 2:1 margin.
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ25X100-10S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 100 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. |
| ×100 | 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 exact 90-100 mm extend contact point on the fly while the variable air cushion absorbs the 245.3 N impact during rapid assembly operations.
Fine-tune the stroke length by up to 10 mm during line changeovers to accommodate different package sizes without swapping the entire cylinder.
Leverage the smooth deceleration and compact JIS body to test fragile components, safely lifting up to 12.5 kg vertically with a 2:1 safety margin.
When sizing this actuator, compare the real thrust: the 25 mm bore provides 245.3 N push at 0.5 MPa, sitting neatly between the MFCJ20 at 157 N and the MFCJ32 at 402.2 N. Choose this model when a 100 mm extend needs fine-tuning within a 10 mm window and high-speed end-of-stroke shock requires a tuned needle air cushion rather than a fixed bumper.
Mounting options include LB foot, FA flange and TC trunnion, with no SDB or back-cover available on this adjustable build. Note that the cushion only decelerates the piston near stroke end—it is not a lock or brake. If the application must hold a load on air loss, add an external rod lock or pilot-operated check valve.
Quick checklist
This 25 mm bore double-acting cylinder uses a 1/8" port and a Ø10 mm rod with M10x1.25 male thread. 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. The theoretical maximum force is 50 kgf at 1.0 MPa, with an operating speed of 30-800 mm/s.
An external adjuster shortens the extend stroke by up to 10 mm on site, giving a usable 90-100 mm range, while the needle air cushion decelerates the piston at both ends for smooth high-speed motion. The -S magnet allows CMSG/DMSG/EMSG sensors. The cushion is not a brake; the piston drifts on air loss, so use an external rod lock for load holding.
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