
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ20X160-30S 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 and absorb high-speed shock with the AirTAC MFCJ20X160-30S. This JIS-standard round-body mini cylinder features a 30 mm external adjuster that shortens the extend stroke on-site (usable range 130-160 mm), paired with a needle variable air cushion at both ends for smooth deceleration.
Built with a SUS304 stainless barrel and riveted aluminium covers, the body is shorter than an ISO 6432 cylinder for the same bore and stroke, saving valuable mounting length. The 20 mm bore delivers 157 N push at 0.5 MPa via a 1/8" port, yielding a safe working load around 94 N. The -S suffix means a built-in magnet enables CMSG, DMSG or EMSG sensors.
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ20X160-30S |
|---|---|
| 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 130-160 mm extend position on trial fixtures without machining new spacers, using the 30 mm window to dial in the exact 94 N working contact point.
Rely on the variable air cushion to silently soak up end-of-stroke shock when rapidly routing light packages, preventing impact damage over long cycle runs.
Leverage the SUS304 stainless barrel for mild washdown resistance while adjusting the extend length on the fly to test different sample depths without changing cylinders.
Choose between the 20 mm and 25 mm bores based on your force needs: this MFCJ20 provides 157 N push at 0.5 MPa, while the larger MFCJ25 offers 245.3 N. The adjustable stroke and variable air cushion are perfect for high-speed changeovers or shock-sensitive trial fits where you must tune both the end position and the deceleration rate.
Note that the air cushion only decelerates the piston near stroke end; it does not lock or hold the load. If air loss occurs, the piston drifts, so fit an external rod lock or pilot check valve for suspended loads. Mount via LB foot, FA flange or TC trunnion (no SDB), and use the -S magnet for position sensing.
Quick checklist
This 20 mm bore cylinder features a 1/8" port and an Ø8 mm rod. It generates 157 N push / 131.9 N pull at 0.5 MPa, 219.8 N push / 184.7 N pull at 0.7 MPa, and a theoretical max of 32 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 30 mm (usable range 130-160 mm), while the needle variable air cushion at both ends decelerates the piston near stroke end. The -S suffix provides a magnet for CMSG, DMSG or EMSG sensors.
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