
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ40X60-30S 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 extend distances on-site with the AirTAC MFCJ40X60-30S, a JIS-standard round-body mini cylinder featuring a 30 mm adjustable stroke window and variable air cushions at both ends. The SUS304 stainless steel barrel and riveted aluminium covers form a compact body that is shorter than a comparable ISO 6432 unit, saving valuable machine space while resisting mild washdown corrosion.
Driven by a 16 mm rod and a 1/4" port, this double-acting 40 mm bore generates 628.3 N of push force at 0.5 MPa, yielding a safe working load of roughly 377 N or about 32 kg of vertical lift with a 2:1 margin. The integrated -S magnet supports CMSG, DMSG, or EMSG reed and electronic switches for precise end-position sensing.
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ40X60-30S |
|---|---|
| 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.
Use the 879.6 N push force at 0.7 MPa to drive a stamping die, dialing the 30 mm stroke adjuster for precise material contact and setting the air cushion to prevent harsh end impacts.
Actuate a routing flap at high cycle speeds; the variable cushion soaks up kinetic energy while the -S magnet triggers a DMSG switch to confirm the divert stroke.
Arrest heavy pallets safely using the 527.8 N pull force, relying on the adjustable extend window to fine-tune the stopping distance for various load sizes.
Choose the MFCJ40 over the 32 mm bore when you need serious thrust: the 40 mm delivers 628.3 N push at 0.5 MPa compared to 402.2 N for the MFCJ32. This larger bore is the right pick for high-speed changeovers where you must tune both the extend end-point within the 30 mm window and the needle air cushion to absorb end-of-stroke shock without slamming.
Mounting options include LB foot, FA flange, and TC trunnion brackets (no SDB). Note that the air cushion only decelerates the piston near the end of travel; it is not a brake. If the load must be held during air loss, install an external rod lock or pilot check valve.
Quick checklist
This 40 mm bore double-acting cylinder uses a 1/4" air port and a 16 mm rod with an M14x1.5 male 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. Operating speed ranges from 30-800 mm/s.
The external adjuster shortens the extend stroke by up to 30 mm on-site, giving a usable extend range of 30-60 mm, while the retract stroke remains full length. The variable air cushion at both ends uses a needle valve to decelerate the piston smoothly at high speeds. Because it includes the -S magnet, you can mount CMSG, DMSG, or EMSG sensors for position detection.
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