
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ40X160-75S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø40mm bore and 160mm 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 lengths on-site with the AirTAC MFCJ40X160-75S, a JIS-standard round-body mini cylinder featuring a 75 mm adjustable stroke window and needle-set variable air cushions at both ends. The SUS304 stainless barrel and riveted aluminium covers yield a shorter mounting envelope than an ISO 6432 unit of the same bore and stroke, while resisting mild washdown corrosion. A 1/4" port and M14x1.5 male rod thread equip the 16 mm rod for heavy-duty cycles.
This double-acting 40 mm bore generates 628.3 N push and 527.8 N pull at 0.5 MPa, peaking at a 128.1 kgf theoretical maximum at 1.0 MPa. For practical sizing, it yields a safe working load of about 377 N, lifting roughly 32 kg vertically with a 2:1 margin. The built-in -S magnet enables CMSG, DMSG, or EMSG switches for position sensing across the 30-800 mm/s speed range.
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ40X160-75S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 160 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. |
| ×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 75 mm extend window on high-speed assembly lines to press bearings without over-traveling, relying on 628.3 N of thrust.
Alter the diverting stroke on the fly for mixed product sizes, using the needle cushion to silently stop the 16 mm rod at high speeds.
Lift 32 kg loads vertically in packaging zones; the -S magnet confirms extend/retract positions via DMSG sensors for safe changeovers.
Choose the MFCJ40 over the MFCJ32 when your application demands serious thrust: the 40 mm bore delivers 628.3 N push at 0.5 MPa compared to 402.2 N for the 32 mm variant. The external adjuster is ideal for high-speed changeovers, allowing you to shorten the extend stroke by up to 75 mm (usable range 85-160 mm) without swapping hardware, while the variable air cushions absorb end-of-stroke shock during rapid trial fits. Mounting options include LB foot, FA flange, and TC trunnion (no SDB or back-cover). Note that the cushion only decelerates the piston near stroke end; it does not function as a brake. To hold a load vertically on air loss, install an external rod lock or pilot-operated check valve.
Quick checklist
This 40 mm bore cylinder uses a 1/4" port. At 0.5 MPa it provides 628.3 N push and 527.8 N pull. At 0.7 MPa it provides 879.6 N push and 738.9 N pull. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
An external adjuster shortens the extend stroke by up to 75 mm (usable 85-160 mm), while the retract stroke remains full. Needle-set variable air cushions at both ends decelerate the piston to reduce shock at speeds up to 800 mm/s. The -S magnet allows CMSG, DMSG, and EMSG sensors to track position.
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