Airtac MFCJ Adjustable Mini Cylinder MFCJ20X10-10S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ20X10-10S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 10mm 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
- Stroke10 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM8×1.25
- CushionVariable air cushion, both ends
About the Airtac MFCJ Adjustable Mini Cylinder MFCJ20X10-10S
Dial in exact end positions on the fly with this double-acting, adjustable-stroke mini cylinder. An external adjuster shortens the extend stroke by up to 10 mm, while a needle-set variable air cushion at both ends soaks up high-speed shock for smooth deceleration. The built-in -S magnet supports CMSG, DMSG, and EMSG switches for position sensing.
Built to JIS standards with a SUS304 stainless barrel and riveted aluminium covers, this round-body unit is shorter than an ISO 6432 cylinder of the same bore and stroke, saving valuable mounting length. Delivering 157 N of push force at 0.5 MPa on a 1/8" port, it yields a safe working load of roughly 94 N. It lifts about 8 kg vertically with a 2:1 margin, making it ideal for compact, washdown-resistant trial fits.
Airtac MFCJ Adjustable Mini Cylinder MFCJ20X10-10S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ20X10-10S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 10 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 MFCJ20X10-10S
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×10 | 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 MFCJ20X10-10S Is Used
Micro-Clamp Tuning
Fine-tune the extend stroke within the 10 mm window during high-speed changeovers to grip delicate electronic components without crushing them.
Lab Dispense Head
Leverage the 8 kg vertical lift capacity and variable air cushion to lower a fluid dispense nozzle smoothly, preventing splashing at the stroke end.
Small Part Ejection
Adjust the extend position on-site to push lightweight moulded parts out of a jig, relying on the 94 N safe working load for consistent ejection.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ20X10-10S the Right Cylinder?
Choose the MFCJ20 bore when your application demands around 94 N of safe working force (60% of the 157 N push at 0.5 MPa). If your changeover requires more thrust, step up to the MFCJ25 which provides 245.3 N at 0.5 MPa. Both options feature the 10 mm adjustable window and variable air cushion to tame end-of-stroke shock during high-speed changeovers.
The external adjuster sets the extend end position but does not function as a mid-stroke lock. Because the piston drifts on air loss, add an external rod lock or pilot check valve for suspended loads. Mount via LB foot, FA flange, or TC trunnion (no SDB), and utilize the -S magnet for electronic or reed sensors.
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 MFCJ20X10-10S FAQ
This 20 mm bore cylinder features a 1/8" air port and an M8x1.25 male rod 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 force of 32 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 10 mm, and the needle-set variable air cushion decelerates the piston at both ends for smooth high-speed motion. The cushion only slows the piston near the end of travel; it is not a lock or brake, so the piston will drift on air loss unless you fit an external rod lock.
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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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