Airtac MFCJ Adjustable Mini Cylinder MFCJ40X150-75S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ40X150-75S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø40mm bore and 150mm 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
- Stroke150 mm
- Port size1/4"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM14×1.5
- CushionVariable air cushion, both ends
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MFCJ Adjustable Mini Cylinder MFCJ40X150-75S
Dial in exact extend lengths and absorb high-speed shocks with the AirTAC MFCJ40X150-75S. This JIS-standard round-body mini cylinder features a 75 mm adjustable stroke window, letting you shorten the extend end on-site from 150 mm down to 75 mm, while the retract stroke remains full. A needle-set variable air cushion at both ends soaks up end-of-stroke impact for smooth, quiet operation across its 30-800 mm/s speed range.
Built with a SUS304 stainless steel barrel and riveted aluminium covers, it resists mild corrosion and washdown while maintaining a shorter mounting length than an ISO 6432 cylinder. The 40 mm bore delivers 628.3 N push force at 0.5 MPa, yielding a safe working load of roughly 377 N or a 32 kg vertical lift with a 2:1 margin. A 1/4" port and M14x1.5 male rod thread handle the airflow and linkage, and the included -S magnet enables CMSG, DMSG or EMSG sensor switches.
Airtac MFCJ Adjustable Mini Cylinder MFCJ40X150-75S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ40X150-75S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 150 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 MFCJ40X150-75S
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×150 | 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 MFCJ40X150-75S Is Used
High-Speed Component Pressing
Tune the 75 mm extend window on-site to achieve the exact 90 mm press depth for bearing inserts, while the variable air cushion absorbs the 628.3 N impact at high cycle speeds.
Adjustable Diverter Arm
Set precise sorting positions for changing package sizes on a packaging line, using the needle cushion to smoothly stop the 40 mm bore rod without slamming.
Vertical Lift Stops
Lift loads up to 32 kg vertically with a 2:1 safety margin, adjusting the extend end to clear varying pallet heights while relying on the cushion to prevent end-of-stroke bounce.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ40X150-75S the Right Cylinder?
When sizing an adjustable-stroke cylinder, compare the real force outputs: this 40 mm bore provides 628.3 N push at 0.5 MPa, whereas the smaller MFCJ32 offers 402.2 N. Choose the 40 mm bore when moving heavier fixtures or overcoming high friction during high-speed changeovers. The 75 mm adjust window is perfect for trial fits where the exact extend position must be tuned on the machine, and the variable air cushion handles the resulting shock at high velocities.
Mounting options include LB foot, FA flange and TC trunnion (no SDB or back-cover code applies here). Because the -S magnet is present, you can fit reed or electronic switches directly. Remember that the air cushion only decelerates the piston near the end of stroke; it does not lock or hold the load. If air pressure drops, the piston will drift, so install an external rod lock or pilot-operated check valve for suspended loads.
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 MFCJ40X150-75S FAQ
This 40 mm bore cylinder uses a 1/4" port and delivers 628.3 N push and 527.8 N pull at 0.5 MPa. 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 on-site, while the needle-set variable air cushion at both ends decelerates the piston for smooth stops. The -S magnet allows CMSG, DMSG or EMSG sensors. The cushion is not a brake; the cylinder cannot hold a load on air loss, so use an external rod lock for suspended loads.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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