
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ32X20-20 is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø32mm bore and 20mm stroke, 1/4" 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 end-of-stroke shock with the AirTAC MFCJ32X20-20. This JIS-standard round-body mini cylinder features a SUS304 stainless barrel and riveted aluminium covers, giving you a shorter mounting envelope than an ISO 6432 unit of the same size. An external adjuster lets you shorten the extend stroke by up to 20 mm on site, while needle valves provide a variable air cushion at both ends for smooth 30-800 mm/s operation.
Driven by a 32 mm bore and a 1/4" port, it delivers 402.2 N push and 345.6 N pull at 0.5 MPa. That translates to a safe working load of roughly 241 N, or enough to lift about 20.5 kg vertically with a 2:1 margin. Note this SKU lacks the -S magnet, so it cannot accept CMSG, DMSG or EMSG sensors.
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ32X20-20 |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 20 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/4" |
| 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 | 402 N | 346 N |
| 0.7 MPa | 563 N | 484 N |
| Max (@1.0 MPa) | 82 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). |
|---|---|
| 32 | Bore size in mm. |
| ×20 | 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 end by up to 20 mm during machine changeovers, letting the 402.2 N push force seat parts accurately without adding physical shims.
Use the variable air cushion to silently absorb shock at 800 mm/s as the 32 mm bore pushes light cartons off a belt, preventing end-cap slam.
Dial in the exact extend position on a test rig, safely moving loads up to 241 N while the SUS304 barrel shrugs off mild washdown splashes.
Choose the MFCJ32 (402.2 N push at 0.5 MPa) for moderate clamping and lifting, stepping up to the MFCJ40 (628.3 N) if your payload exceeds 241 N. Conversely, lighter duties under 245.3 N are better served by the MFCJ25. The 20 mm adjustable window here is perfect for trial fits where you need to tune the extend end without machining spacers, and the dual air cushions handle high-speed changeovers gracefully.
Remember that the cushion only decelerates the piston near the end of travel—it is not a brake. If the load must hold position on air loss, fit an external rod lock or pilot check valve. For mounting, use LB foot, FA flange or TC trunnion brackets (there is no SDB or back-cover option on this build), and order the -S variant if you need position sensing.
Quick checklist
This 32 mm bore cylinder uses a 1/4" port. At 0.5 MPa it pushes 402.2 N and pulls 345.6 N. At 0.7 MPa it pushes 563 N and pulls 483.8 N. The theoretical maximum force is 82 kgf at 1.0 MPa.
This specific SKU lacks a magnet, so it cannot accept CMSG, DMSG or EMSG switches; you need the -S variant for sensing. The external adjuster shortens the extend stroke by up to 20 mm on site, while the variable air cushion at both ends decelerates the piston near stroke end to reduce shock.
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