
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ20X160-75S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 160mm 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 on-site with the AirTAC MFCJ20X160-75S, a JIS-standard round-body mini cylinder featuring a 75 mm adjustable extend window and variable air cushions at both ends. The SUS304 stainless steel barrel and riveted aluminium covers form a compact body that is physically shorter than a comparable ISO 6432 unit, saving valuable mounting length. Equipped with a built-in magnet (-S), it drives CMSG, DMSG, or EMSG switches for position feedback.
In the 20 mm bore class, this double-acting actuator delivers 157 N of push force at 0.5 MPa using a 1/8" port. The needle cushions absorb high-speed end-of-stroke shock for quiet operation, while the external adjuster allows you to shorten the extend stroke anywhere from 85 to 160 mm. It yields a safe working load of roughly 94 N, easily lifting about 8 kg vertically with a 2:1 safety margin.
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ20X160-75S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 160 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. |
| ×160 | 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 extend stroke up to 75 mm during prototype assembly to find the exact contact distance for delicate 8 kg components.
Use the needle air cushions to softly stop the piston at high speeds when deflecting small packages without slamming.
Leverage the SUS304 stainless barrel for mild washdown resistance while adjusting the stroke on the fly for varying test tube heights.
When sizing this series, compare the real thrust: the 20 mm bore provides 157 N push at 0.5 MPa, whereas stepping up to the MFCJ25 yields 245.3 N. Choose the 20 mm bore for lighter, high-speed changeovers where exact positioning and shock absorption matter. The variable air cushion only decelerates the piston near the end of travel—it does not lock or hold the load. If your application must maintain position during air loss, install an external rod lock or pilot-operated check valve. Mounting options include LB foot, FA flange, and TC trunnion (no SDB).
Quick checklist
This 20 mm bore cylinder uses a 1/8" port and generates 157 N push / 131.9 N pull at 0.5 MPa, and 219.8 N push / 184.7 N pull at 0.7 MPa. The theoretical maximum force is 32 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 75 mm (usable range 85-160 mm). The variable air cushions at both ends decelerate the piston to reduce shock. Because it has the -S magnet, you can mount CMSG, DMSG, or EMSG sensors for position detection.
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