Airtac MFCJ Adjustable Mini Cylinder MFCJ20X225-75
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ20X225-75 is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 225mm stroke, 1/8" 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.
- BoreØ20 mm
- Stroke225 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM8×1.25
- 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 MFCJ20X225-75
Dial in the exact extend position on-site with this 75 mm adjustable window, which allows the extend end to be shortened from the 225 mm nominal maximum down to 150 mm. This double-acting, JIS-standard round-body mini cylinder pairs that external adjuster with a needle-set variable air cushion at both ends to soak up high-speed shock. The SUS304 stainless barrel and riveted aluminium covers resist mild corrosion and washdown environments.
Belonging to the 20 mm bore class, it delivers 157 N of push force at 0.5 MPa through its 1/8" port, yielding a safe working load of roughly 94 N. This translates to lifting about 8 kg vertically with a 2:1 margin. The riveted body is purposefully shorter than an ISO 6432 cylinder of the same bore and stroke, saving valuable mounting length. Note this SKU lacks the -S magnet, so it cannot accept CMSG, DMSG or EMSG sensors.
Airtac MFCJ Adjustable Mini Cylinder MFCJ20X225-75 Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ20X225-75 |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 225 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 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 MFCJ20X225-75
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | 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 MFCJ20X225-75 Is Used
Lightweight Trial Fit Assembly
Use the 75 mm adjuster to fine-tune the extend reach during changeovers and set the needle cushion to softly press 8 kg sub-assemblies without slamming.
High-Speed Diverting Gate
Shorten the stroke on-site to match varying package sizes while the variable air cushion absorbs the kinetic energy of rapid 157 N push movements at 800 mm/s.
Adjustable Sealing Head
Dial in the exact 150 to 225 mm extend position for different carton depths, relying on the SUS304 stainless barrel to handle occasional washdowns.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ20X225-75 the Right Cylinder?
When sizing this actuator, compare both directions: this 20 mm bore provides 157 N push at 0.5 MPa, while stepping up to an MFCJ25 yields 245.3 N. Choose the 20 mm bore for lighter, high-speed changeovers where shock-sensitive trial fits demand precise tuning of both the extend end position and the end-of-stroke deceleration. The variable air cushion only decelerates the piston near the end of travel; it is not a lock or brake.
Because a plain cylinder does not hold its load on air loss or when the valve is centered, the piston will drift. For a suspended load, recommend an external rod lock or a pilot-operated check valve. For mounting, select LB foot, FA flange or TC trunnion brackets (SDB and back-cover mounts are unavailable on this build). If position feedback is required, switch to the -S magnet variant to enable sensor use.
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 MFCJ20X225-75 FAQ
This 20 mm bore cylinder uses a 1/8" port and an Ø8 mm rod with an M8x1.25 male thread. It generates 157 N push and 131.9 N pull at 0.5 MPa, 219.8 N push and 184.7 N pull at 0.7 MPa, with a theoretical maximum of 32 kgf at 1.0 MPa.
No, this specific SKU lacks the internal magnet, so it cannot accept CMSG, DMSG or EMSG switches. You would need the -S variant for sensing. The external adjuster only shortens the extend stroke by up to 75 mm; it does not lock the piston mid-stroke.
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