
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ20X150-75 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.
Dial in exact end positions and absorb high-speed shock with the AirTAC MFCJ20X150-75, a JIS-standard round-body mini cylinder. The external adjuster shortens the extend stroke by up to 75 mm, while needle variable air cushions at both ends soak up end-of-stroke impact.
Built with a SUS304 stainless barrel and riveted aluminium covers, this double-acting actuator is shorter than an ISO 6432 cylinder for the same envelope. It pushes with 157 N at 0.5 MPa via a 1/8" port, yielding a safe working load around 94 N. Note this SKU lacks a magnet, so it cannot take CMSG/DMSG/EMSG sensors.
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ20X150-75 |
|---|---|
| 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.
Use the 75 mm extend adjuster to micro-tune the reach on small machining fixtures, letting the 157 N push force seat delicate components without crushing them.
Variable air cushions absorb the shock of rapid diverting strokes on light packaging lines, while the external adjuster sets the exact push distance.
Shorter than an ISO 6432 cylinder, this SUS304 stainless actuator fits tight lab frames and washes down safely, with on-site stroke tuning for varying test tubes.
Choose between the 20 mm and 25 mm bores based on your force needs. This 20 mm bore delivers 157 N push at 0.5 MPa, whereas the MFCJ25 provides 245.3 N. If your changeover requires both exact stroke tuning and high-speed deceleration, the 75 mm adjustable window and variable air cushion here are ideal.
Mount using LB foot, FA flange, or TC trunnion (no SDB or back-cover). Because this non-magnet SKU cannot host a sensor, order the -S variant if you need position feedback. The cushion only decelerates the piston and is not a lock; add an external rod lock or pilot check valve to hold loads on air loss.
Quick checklist
This 20 mm bore cylinder features a 1/8" port and an 8 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.
No, this specific SKU does not include a magnet and cannot host CMSG, DMSG, or EMSG switches. You must order the -S variant for sensing. The 75 mm adjuster only shortens the extend stroke and the variable air cushion only decelerates; neither acts as a mid-stroke lock.
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