Airtac MFCJ Adjustable Mini Cylinder MFCJ40X225-75
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ40X225-75 is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø40mm bore and 225mm 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
- Stroke225 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 MFCJ40X225-75
Tune extend travel precisely on-site with the AirTAC MFCJ40X225-75, a JIS-standard round-body mini cylinder built with a SUS304 stainless barrel and riveted aluminium covers. An external adjuster shortens the extend stroke by up to 75 mm (usable range 150-225 mm), while a needle-set variable air cushion at both ends absorbs high-speed end-of-stroke shock. This 40 mm bore delivers 628.3 N push force at 0.5 MPa and features a 1/4" port.
For the same bore and stroke, this compact body is shorter than an ISO 6432 cylinder, saving valuable mounting length while resisting mild corrosion and washdown. It yields a safe working load of roughly 377 N, lifting about 32 kg vertically with a 2:1 margin. Note this SKU lacks a magnet and cannot take a sensor; the -S variant enables CMSG/DMSG/EMSG switches.
Airtac MFCJ Adjustable Mini Cylinder MFCJ40X225-75 Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ40X225-75 |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 225 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 MFCJ40X225-75
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×225 | 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 MFCJ40X225-75 Is Used
High-Speed Machining Clamps
Dial in the exact 150-225 mm clamp extension on varied part fixtures, using the variable air cushion to soften the 879.6 N @0.7 MPa impact during rapid automated changes.
Package Diverters
Adjust the pusher stroke up to 75 mm on-site for different carton sizes while the needle cushion ensures quiet, shock-free stops at high cycling speeds.
Pallet Stopper Gates
Handle heavy pallets safely with 628.3 N of push force, fine-tuning the gate extension to match pallet depth without mechanical redesign.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ40X225-75 the Right Cylinder?
When sizing, compare this MFCJ40 at 628.3 N push (@0.5 MPa) against the smaller MFCJ32 at 402.2 N. Choose the 40 mm bore when moving heavier fixtures or overcoming high friction, and use the 75 mm adjustable window for trial fits where the exact end position and end-of-stroke shock both need tuning. The variable air cushion allows smooth deceleration across the 30-800 mm/s speed range.
Mounting options include LB foot, FA flange, and TC trunnion (no SDB or back-cover). Remember the air cushion only decelerates near the end of stroke and does not hold position; if air loss occurs the piston drifts, so fit an external rod lock or pilot check valve for suspended loads. As this specific SKU has no -S magnet, position sensing is unavailable.
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 MFCJ40X225-75 FAQ
This 40 mm bore cylinder has a 1/4" port and a 225 mm base stroke with a 75 mm adjustable extend window (150-225 mm usable). 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.
No, this specific SKU does not include a magnet and cannot accept CMSG, DMSG, or EMSG switches; you must order the -S variant for sensing. The external adjuster sets the extend end position, and the variable air cushion only decelerates the piston near the end of travel—it is not a mid-stroke lock.
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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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