
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ20X150-100S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 150mm 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 100 mm on site with this double-acting, variable-cushion mini cylinder. The riveted SUS304 stainless round body with aluminium covers is purpose-built for JIS-standard setups, delivering a shorter mounting length than an ISO 6432 unit of the same bore and stroke.
Driven by a 1/8" port and an Ø8 mm rod, the 20 mm bore yields 157 N of push force at 0.5 MPa. The integrated piston magnet (-S) supports CMSG, DMSG and EMSG switches, while the needle air cushion at both ends soaks up high-speed end-of-stroke shock.
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ20X150-100S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 150 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 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). |
|---|---|
| 20 | Bore size in mm. |
| ×150 | 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.
Apply up to 157 N of push force at 0.5 MPa while tuning the exact extend position within the 100 mm window for delicate assembly fits.
Use the needle air cushions to decelerate the Ø8 mm rod smoothly at high cycle rates, preventing impact damage during product routing.
Dial in the extend stroke on-site for changeovers, leveraging the SUS304 stainless body for washdown resistance in varied production environments.
Match the bore to your load: this 20 mm unit pushes 157 N at 0.5 MPa, whereas the larger MFCJ25 delivers 245.3 N. Choose the 20 mm bore for lighter, high-speed changeovers where the 100 mm adjust window and twin air cushions excel at dialling out end-of-stroke shock. Plan for an external rod lock or pilot check valve if the load must be held on air loss, as the cushion only decelerates and never locks the piston. Mount via LB foot, FA flange or TC trunnion (no SDB), and rely on the -S magnet for position sensing.
Quick checklist
This 20 mm bore cylinder uses a 1/8" port and an Ø8 mm rod. It generates 157 N push and 131.9 N pull at 0.5 MPa, 219.8 N push and 184.7 N pull at 0.7 MPa, with a theoretical max of 32 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 100 mm (usable range 50-150 mm), while the variable air cushion at both ends decelerates the piston near stroke end. The -S suffix means it has a built-in magnet for CMSG, DMSG or EMSG sensors.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
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