Airtac MFCJ Adjustable Mini Cylinder MFCJ20X30-20
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ20X30-20 is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 30mm 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
- Stroke30 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 MFCJ20X30-20
Trim the extend end by up to 20 mm on site with this adjustable-stroke, variable-cushion mini cylinder, then dial in a needle air cushion at each end to soak up high-speed shock. The JIS-standard riveted SUS304 stainless body and aluminium covers are purposefully shorter than an ISO 6432 unit of the same 30 mm stroke, saving valuable mounting length while resisting mild washdown.
Driven by filtered air at 1/8" ports, the 20 mm bore delivers 157 N of push force at 0.5 MPa. That yields a safe working load of roughly 94 N, letting you lift about 8 kg vertically with a 2:1 margin. Note this base SKU lacks a magnet, so it cannot accept CMSG/DMSG/EMSG sensors.
Airtac MFCJ Adjustable Mini Cylinder MFCJ20X30-20 Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ20X30-20 |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 30 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 MFCJ20X30-20
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×30 | 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 MFCJ20X30-20 Is Used
Light Part Ejection
Dial the 20 mm extend window to strike plastic parts cleanly at high speed, relying on the variable air cushion to halt the 8 kg load smoothly.
Package Diverting
Tune the stroke on site to deflect light cartons without overshoot, while the needle cushion absorbs end-of-travel impact during rapid cycling.
Lab Test Actuation
Ideal for compact trial-fit rigs where the SUS304 body resists mild corrosion and the adjustable end saves remachining stops.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ20X30-20 the Right Cylinder?
When sizing, compare this 20 mm bore offering 157 N push at 0.5 MPa against the MFCJ25 at 245.3 N to match your load. The external adjuster is perfect for high-speed changeovers or shock-sensitive trial fits where the exact extend position needs tuning. Mount via LB foot, FA flange, or TC trunnion (no SDB). Remember the air cushion only decelerates near stroke end; for load holding on air loss, fit an external rod lock or pilot check valve.
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 MFCJ20X30-20 FAQ
This 20 mm bore cylinder features a 1/8" port and an 8 mm rod. 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 max of 32 kgf at 1.0 MPa.
This SKU lacks the -S magnet, so it cannot take CMSG/DMSG/EMSG switches. The external adjuster only shortens the extend end position; it and the variable air cushion do not lock or hold the load. Use a pilot check valve for holding.
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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