Airtac MFCJ Adjustable Mini Cylinder MFCJ40X100-75S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ40X100-75S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø40mm bore and 100mm 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
- Stroke100 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 MFCJ40X100-75S
Tune both travel and end-of-stroke shock on site with this 40 mm bore JIS-standard round-body mini cylinder. The external adjuster shortens the extend stroke by up to 75 mm, while needle variable air cushions at both ends soak up high-speed impact. Its SUS304 stainless barrel and riveted aluminium covers yield a shorter mounting envelope than an ISO 6432 unit, resisting mild washdown.
Delivering 628.3 N push at 0.5 MPa through a 1/4" port, this double-acting actuator fits medium-force tasks. The -S suffix means a piston magnet is built in for CMSG, DMSG or EMSG sensors. Expect a safe working load around 377 N, or roughly 32 kg vertical lift with a 2:1 margin.
Airtac MFCJ Adjustable Mini Cylinder MFCJ40X100-75S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ40X100-75S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 100 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 MFCJ40X100-75S
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×100 | 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 MFCJ40X100-75S Is Used
High-Speed Diverters
Dial in the 75 mm stroke window to time package pushes perfectly, letting the variable air cushion absorb the 879.6 N peak force at 0.7 MPa without end-knock.
Trial-Fit Clamping
Use the on-site extend adjuster to find the exact clamping position for varying parts, relying on the 628.3 N push force to secure the workpiece.
Adjustable Seal Press
Tune the extend end to press cartons gently. The SUS304 stainless barrel handles light washdown while the cushion ensures quiet stops at 800 mm/s.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ40X100-75S the Right Cylinder?
Choose the MFCJ40 over the MFCJ32 when you need more muscle: 628.3 N push versus 402.2 N at 0.5 MPa. This 40 mm bore is ideal for high-speed changeovers where you must dial in the exact 25 to 100 mm extend position and set the cushion to prevent end-knock. The 1/4" port and M14x1.5 male rod thread match standard pneumatic manifolds.
The variable air cushion only decelerates the piston near stroke end; it is not a brake. If air pressure drops, the load drifts, so fit an external rod lock or pilot check valve for holding. Mount via LB foot, FA flange or TC trunnion (no SDB). The -S magnet enables CMSG, DMSG and EMSG switches.
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 MFCJ40X100-75S FAQ
This 40 mm bore cylinder uses a 1/4" port. 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 max of 128.1 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 75 mm on site, and needle variable air cushions at both ends decelerate the piston near stroke end. The cushion is not a brake; the -S magnet enables CMSG, DMSG and EMSG sensors.
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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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