
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ40X160-50 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 the exact extend end-point on-site with the AirTAC MFCJ40X160-50, a JIS-standard round-body mini cylinder featuring a 50 mm adjustable stroke window (usable extend 110-160 mm). The SUS304 stainless barrel and riveted aluminium covers yield a shorter mounting envelope than an ISO 6432 unit, resisting mild washdown corrosion while packing a 628.3 N push force at 0.5 MPa.
Driven by a 16 mm rod with a 1/4" port and M14x1.5 male thread, this double-acting actuator pairs its on-site adjuster with a needle variable air cushion at both ends to soak up high-speed shock. It yields a safe working load of roughly 377 N and lifts about 32 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 MFCJ40X160-50 |
|---|---|
| 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.
Tune the 50 mm extend window to set the exact 110-160 mm contact depth, relying on the variable air cushion to decelerate the 628.3 N push force smoothly at cycle end.
Fine-tune the diverting arm reach on-site for mixed product sizes; the needle cushion absorbs the shock of rapid routing reversals without needing a separate bumper.
Lift or arrest loads up to 32 kg vertically with a 2:1 safety margin, adjusting the stop position precisely while the SUS304 barrel handles mildly humid storage environments.
When sizing these adjustable-stroke units, compare both bores directly: this MFCJ40 delivers 628.3 N push and 527.8 N pull at 0.5 MPa, whereas the smaller MFCJ32 provides 402.2 N push. Choose the 40 mm bore when moving heavier fixtures or overcoming high friction during high-speed changeovers. The external adjuster and twin needle cushions are ideal for trial fits where both the stroke length and end-of-stroke shock require precise tuning.
Mounting options include LB foot, FA flange, and TC trunnion (with no SDB or back-cover available). Because this specific SKU has no -S magnet, position sensing is impossible without switching to the magnet-equipped variant. Remember that the air cushion only decelerates the piston near stroke end—it is not a lock. If the load must be held during air loss, install an external rod lock or pilot check valve.
Quick checklist
This double-acting 40 mm bore cylinder has a 1/4" port and an M14x1.5 male rod thread. It generates 628.3 N push and 527.8 N pull at 0.5 MPa, or 879.6 N push and 738.9 N pull at 0.7 MPa, with a theoretical max of 128.1 kgf at 1.0 MPa. It uses a variable air cushion at both ends and operates at 30-800 mm/s.
No, this specific SKU does not include the -S magnet, so it cannot accept CMSG, DMSG, or EMSG switches. You must select the -S variant for sensing. The 50 mm external adjuster only shortens the extend stroke within the 110-160 mm range; it does not lock the piston mid-stroke.
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