Airtac MFCJ Adjustable Mini Cylinder MFCJ20X300-10S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ20X300-10S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 300mm 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
- Stroke300 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 MFCJ20X300-10S
Tune both travel and end-of-stroke shock on site with this JIS-standard round-body mini cylinder. The external adjuster shortens the extend stroke by up to 10 mm (usable 290-300 mm), while the needle variable air cushion at both ends soaks up high-speed impact for smooth motion. An integrated magnet (-S) enables CMSG, DMSG or EMSG switches for position sensing.
Built with a SUS304 stainless steel barrel and riveted aluminium covers, the riveted construction is shorter than an ISO 6432 cylinder for the same 20 mm bore and 300 mm stroke, saving valuable mounting length. Delivering 157 N push force at 0.5 MPa via a 1/8" port, it provides a safe working load of roughly 94 N or lifts about 8 kg vertically with a 2:1 margin.
Airtac MFCJ Adjustable Mini Cylinder MFCJ20X300-10S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ20X300-10S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 300 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 MFCJ20X300-10S
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×300 | 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 MFCJ20X300-10S Is Used
Lightweight Component Pushing
Pushes small electronic or plastic parts at high speed with 157 N force, using the 10 mm stroke adjuster to dial in the exact extend position for delicate trial fits.
High-Speed Diverter Arms
Actuates light diverting gates on packaging lines; the variable air cushion absorbs the repetitive end-of-stroke shock to keep the 300 mm travel quiet and smooth.
Compact Vertical Lifts
Lifts roughly 8 kg of product or tooling vertically in tight machine cells, benefiting from the shorter JIS body length compared to standard ISO 6432 alternatives.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ20X300-10S the Right Cylinder?
Choose between the 20 mm and 25 mm bores based on your force needs. This MFCJ20 provides 157 N push at 0.5 MPa, whereas the larger MFCJ25 delivers 245.3 N—pick the 20 mm for lighter, high-speed tasks and the 25 mm when moving heavier fixtures. Both feature the on-site stroke adjuster and variable air cushion, ideal for changeovers where exact end positions and shock absorption need tuning.
Remember that the air cushion only decelerates the piston near the end of travel; it does not lock or hold the load. If air pressure drops, the piston will drift. For vertical or suspended loads that must hold position, add an external rod lock or pilot-operated check valve. Mount using LB foot, FA flange or TC trunnion brackets (no SDB), and use the built-in magnet for CMSG/DMSG/EMSG 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 MFCJ20X300-10S FAQ
This 20 mm bore double-acting cylinder uses 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 maximum of 32 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 10 mm (usable 290-300 mm) to fine-tune the end position. The variable air cushion only decelerates the piston near the end; it is not a brake. The -S magnet enables CMSG/DMSG/EMSG sensors, but you need an external rod lock to hold loads on air loss.
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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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