
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ40X60-40S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø40mm bore and 60mm 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 high-speed shock with the AirTAC MFCJ40X60-40S, a JIS-standard round-body mini cylinder. The external adjuster lets you shorten the extend stroke by up to 40 mm on-site, while needle variable air cushions at both ends ensure smooth deceleration. Its SUS304 stainless barrel and riveted aluminium covers resist mild washdown environments.
Delivering 628.3 N of push force at 0.5 MPa through a 1/4" port, this double-acting 40 mm bore unit handles robust cycles. The -S option includes a piston magnet for CMSG, DMSG, or EMSG sensors. It yields a safe working load of roughly 377 N, lifting about 32 kg vertically with a 2:1 margin.
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ40X60-40S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 60 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/4" |
| Rod thread | M14×1.5 |
| 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 | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 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). |
|---|---|
| 40 | Bore size in mm. |
| ×60 | 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.
Drives a 30 kg machining platen rapidly forward, relying on the variable air cushion to absorb end shock while the 40 mm adjuster sets the exact clamping reach.
Pushes varied carton sizes on a conveyor, using the 40 mm extend window to change stroke length on the fly without moving the cylinder mounts.
Lifts roughly 32 kg of packaged stock vertically, using the built-in magnet to confirm top position and the needle cushion to prevent dropping shock.
When sizing between the two available bores, the MFCJ40 provides 628.3 N push at 0.5 MPa versus the MFCJ32 at 402.2 N. Choose this 40 mm bore when moving heavier platens at high speeds, as the variable air cushion prevents harsh end-of-stroke impacts. The 40 mm adjustable window is ideal for changeovers needing precise extend tuning.
Mount via LB foot, FA flange, or TC trunnion (no SDB). Note that the air cushion only decelerates the piston; it does not lock the load. If gravity drops the tooling on air loss, add an external rod lock or pilot check valve. The included -S magnet enables solid-state or reed position sensing.
Quick checklist
This 40 mm bore cylinder uses a 1/4" port and a M14x1.5 male rod thread. It generates 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push and 738.9 N pull at 0.7 MPa, with a theoretical maximum of 128.1 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 40 mm on-site without changing the full retract. Needle variable air cushions at both ends decelerate the piston near stroke end for quiet high-speed motion. The -S suffix means it has a built-in magnet for CMSG, DMSG, or EMSG sensors.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
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