
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ20X75-75 is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 75mm 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.
Tune extend travel on-site with the AirTAC MFCJ20X75-75, a JIS-standard round-body mini cylinder featuring a 75 mm adjustable stroke window and needle-set variable air cushions at both ends. The riveted SUS304 stainless barrel with aluminium covers is purposefully shorter than an ISO 6432 unit of the same bore and stroke, saving valuable mounting length while resisting mild washdown corrosion. Driven by a 12 mm piston rod with an M8x1.25 male thread and 1/8" port, this double-acting actuator delivers a 157 N push force at 0.5 MPa.
The integrated cushioning soaks up high-speed end-of-stroke shock for smooth, quiet motion, but note it only decelerates the piston and does not lock the load. This non-magnet SKU cannot host position sensors; adding the -S variant enables CMSG, DMSG, or EMSG switches. For vertical lifting, expect a safe working load of about 94 N (roughly 60% of the 0.5 MPa push force), which lifts approximately 8 kg vertically with a 2:1 safety margin.
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ20X75-75 |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 75 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. |
| ×75 | 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 0-75 mm extend position on-site to deflect light packages smoothly, relying on the variable air cushion to absorb the impact of high-speed 157 N push strokes.
Perfect for changeovers where a 94 N safe working load seats delicate components, letting operators fine-tune the extend length and needle dampening to prevent end-of-stroke shock damage.
Save mounting space along tight conveyor lines with a JIS-standard body shorter than ISO 6432, using the 1/8" ported actuator to halt lightweight product flows with adjustable reach.
Choose the MFCJ20 bore when your changeover requires precise on-site stroke tuning and moderate force, offering a 157 N push at 0.5 MPa. If your fixture demands more thrust, step up to the MFCJ25, which provides 245.3 N of push force at the same pressure. Both options feature an external adjuster that shortens the extend stroke by up to 75 mm, making them perfect for trial fits where end-of-stroke shock also needs custom needle-valve damping. Mount via LB foot, FA flange, or TC trunnion (SDB is unavailable). Because this specific model lacks the -S magnet, it cannot accept magnetic sensors; if positioning feedback is required, select the -S version for CMSG/DMSG/EMSG switch compatibility. Remember that the air cushion only decelerates near the stroke end—it will not hold a load on air loss. For suspended loads, install an external rod lock or pilot check valve.
Quick checklist
This 20 mm bore cylinder features a 1/8" air port and an M8x1.25 male rod thread. At 0.5 MPa it provides 157 N of push force and 131.9 N of pull force. At 0.7 MPa, push increases to 219.8 N and pull to 184.7 N. The theoretical maximum force is 32 kgf at 1.0 MPa, with an operating speed range of 30-800 mm/s.
No, this specific SKU lacks a magnet and cannot accept CMSG, DMSG, or EMSG sensors; you must choose the -S variant for position feedback. Additionally, the variable air cushion only decelerates the piston near the stroke end to absorb shock—it is not a brake. The cylinder will drift on air loss, so use an external rod lock or pilot check valve for load holding.
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