Airtac MFCJ Adjustable Mini Cylinder MFCJ40X80-10
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ40X80-10 is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø40mm bore and 80mm 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.
- BoreØ40 mm
- Stroke80 mm
- Port size1/4"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM14×1.5
- CushionVariable air cushion, both ends
About the Airtac MFCJ Adjustable Mini Cylinder MFCJ40X80-10
Dial in exact end positions and absorb high-speed shock with the AirTAC MFCJ40X80-10, a JIS-standard round-body mini cylinder. An external adjuster shortens the extend stroke by up to 10 mm on-site, while needle-set variable air cushions at both ends soak up end-of-stroke impact. The riveted SUS304 stainless barrel and aluminium covers yield a body notably shorter than an ISO 6432 unit for the same 80 mm stroke.
Built for robust double-acting performance, this 40 mm bore model pushes 628.3 N and pulls 527.8 N at 0.5 MPa. That translates to a safe working load of roughly 377 N, or lifting about 32 kg vertically with a 2:1 safety margin. It uses a 1/4" port and a 16 mm rod with an M14x1.5 male thread. Note this SKU lacks a magnet, so it cannot accept CMSG/DMSG/EMSG sensors.
Airtac MFCJ Adjustable Mini Cylinder MFCJ40X80-10 Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ40X80-10 |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 80 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.
Theoretical Output Force (Ø40mm)
| 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.
Model Code: Airtac MFCJ Adjustable Mini Cylinder MFCJ40X80-10
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×80 | 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.
Where the Airtac MFCJ Adjustable Mini Cylinder MFCJ40X80-10 Is Used
High-Speed Forming Press Feed
Pushes heavy tooling with 628.3 N force at 0.5 MPa. The variable air cushion decelerates the 800 mm/s rapid approach smoothly, while the 10 mm stroke adjuster dials in the exact material contact point.
Pallet Diverting Gate
Handles robust pallet routing loads. The adjustable extend end allows on-site tuning of the gate clearance without remachining stops, and the cushion prevents shock wear during continuous cycling.
Vertical Lift Stopper
Lifts about 32 kg vertically with a 2:1 safety margin. The SUS304 stainless barrel resists washdown moisture, and the compact JIS body saves vertical mounting space compared to ISO 6432 equivalents.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ40X80-10 the Right Cylinder?
When sizing these adjustable-stroke units, compare the real thrust: this MFCJ40 delivers 628.3 N push at 0.5 MPa, whereas the smaller MFCJ32 provides 402.2 N. Choose the 40 mm bore when moving heavier fixtures or overcoming high friction, and use the 10 mm adjuster window for trial fits where the exact extend point must be tuned on the machine. The variable air cushion is essential for high-speed changeovers that would otherwise slam the end cap.
Mounting options include LB foot, FA flange, and TC trunnion (no SDB or back-cover code). Remember that the cushion only decelerates the piston near stroke end—it is not a lock. If the load must hold position on air loss, install an external rod lock or pilot check valve. For position feedback, you must select the -S magnet variant, as this base SKU cannot take a sensor.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Back cover (CA/U/CM) & mount (LB/FA/SDB/TC)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check Use correct back cover (CA/U/CM) & mount (LB/FA/SDB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac MFCJ Adjustable Mini Cylinder MFCJ40X80-10 FAQ
This 40 mm bore cylinder features a 1/4" port and a 16 mm rod with an M14x1.5 male thread. At 0.5 MPa it pushes 628.3 N and pulls 527.8 N; at 0.7 MPa it pushes 879.6 N and pulls 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
This specific SKU does not have a magnet, so it cannot accept CMSG, DMSG, or EMSG switches; you need the -S variant for sensing. The external adjuster shortens the extend stroke by up to 10 mm on-site (usable extend 70-80 mm), and the variable air cushion at both ends decelerates the piston near stroke end but does not lock the load.
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