Airtac MFCJ Adjustable Mini Cylinder MFCJ40X75-75
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ40X75-75 is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø40mm bore and 75mm 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
- Stroke75 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 MFCJ40X75-75
Dial in the exact extend end-point on-site with the AirTAC MFCJ40X75-75, a JIS-standard round-body mini cylinder featuring a 75 mm adjustable stroke window. The SUS304 stainless barrel and riveted aluminium covers yield a shorter mounting envelope than an ISO 6432 unit, while the 1/4" port and M14x1.5 male rod thread handle robust pneumatic flow.
This 40 mm bore double-acting actuator delivers 628.3 N of push force at 0.5 MPa, making its safe working load roughly 377 N. It lifts about 32 kg vertically with a 2:1 margin. Needle-set variable air cushions at both ends soak up high-speed kinetic energy, and because this specific SKU lacks the -S magnet, it cannot accept CMSG, DMSG, or EMSG position switches.
Airtac MFCJ Adjustable Mini Cylinder MFCJ40X75-75 Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ40X75-75 |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 75 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 MFCJ40X75-75
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×75 | 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 MFCJ40X75-75 Is Used
High-Speed Press Feed
Pushes 628.3 N at 0.5 MPa to feed heavy stock, using the 75 mm adjuster to dial in the exact grip length while the variable air cushion absorbs rapid repetitive shocks.
Package Divert Arm
Lifts about 32 kg vertically with a 2:1 margin to actuate a divert gate, relying on the needle-set cushion to prevent slamming during 800 mm/s cycling.
Machine Tool Clamping
Holds heavy cast parts securely for machining, fine-tuning the extend position on the fly to accommodate different raw material widths without swapping hardware.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ40X75-75 the Right Cylinder?
When sizing these adjustable actuators, compare the bores directly: this 40 mm bore pushes 628.3 N at 0.5 MPa, whereas the smaller MFCJ32 provides 402.2 N. Choose the 40 mm variant when moving heavier fixtures at high speeds where the 75 mm adjuster window and dual variable air cushions prevent end-of-stroke shock damage during rapid changeovers.
Mount this cylinder using LB foot, FA flange, or TC trunnion brackets, noting that SDB and back-cover options are unavailable. Remember that the air cushion only decelerates the piston near the stroke end; it does not function as a brake. If gravity or air loss could cause the load to drift, install an external rod lock or pilot check valve.
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 MFCJ40X75-75 FAQ
This 40 mm bore cylinder features 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, 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.
No, this specific SKU lacks the internal magnet, so it cannot accept CMSG, DMSG, or EMSG switches. You must order the -S variant for sensing capabilities. The external adjuster shortens the extend stroke by up to 75 mm, but it does not lock the piston mid-stroke.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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