Airtac MFCJ Adjustable Mini Cylinder MFCJ20X300-100
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ20X300-100 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 MFCJ20X300-100
Dial in exact end positions and absorb high-speed shock with the AirTAC MFCJ20X300-100 adjustable-stroke, variable-cushion cylinder. This JIS-standard round-body mini features a 100 mm adjuster window that shortens the extend stroke on-site from 300 mm down to 200 mm, while retract remains full length. The SUS304 stainless steel barrel and riveted aluminium covers deliver mild washdown resistance, and the body is noticeably shorter than an ISO 6432 cylinder for the same envelope.
Operating at 0.15-1.0 MPa via a 1/8" port, the 20 mm bore generates 157 N of push force at 0.5 MPa. This translates to a safe working load of roughly 94 N, lifting about 8 kg vertically with a 2:1 margin. Needle-set variable air cushions at both ends soak up end-of-stroke kinetic energy to prevent harsh impacts during rapid cycling.
Airtac MFCJ Adjustable Mini Cylinder MFCJ20X300-100 Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ20X300-100 |
|---|---|
| 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 MFCJ20X300-100
| 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 MFCJ20X300-100 Is Used
Lightweight Component Pressing
Apply up to 94 N of safe working force to seat delicate electronic clips or pins, using the 100 mm adjuster to fine-tune the extend depth without reprogramming the motion controller.
High-Speed Diverting
Actuate lightweight routing gates at up to 800 mm/s while the variable air cushion silently decelerates the 300 mm stroke, preventing impact damage during rapid package changeovers.
Adjustable Length Gauging
Set precise physical stops for material feed or length inspection between 200 and 300 mm, relying on the SUS304 barrel to withstand mildly humid or washdown factory environments.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ20X300-100 the Right Cylinder?
When sizing this adjustable family, compare the real thrust figures: 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 changeover tasks where exact extend length and end-of-stroke shock both need field tuning. The external adjuster sets the end position but does not lock the piston mid-stroke.
Note that this specific SKU lacks the -S magnet and therefore cannot accept CMSG, DMSG, or EMSG position switches. Mounting options include LB foot, FA flange, and TC trunnion (no SDB or back-cover mount). Because a standard cylinder drifts on air loss, add an external rod lock or pilot check valve if the load must be held safely.
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 MFCJ20X300-100 FAQ
This 20 mm bore cylinder features a 1/8" port and operates at speeds of 30-800 mm/s. The double-acting thrust is 157 N push and 131.9 N pull at 0.5 MPa, rising to 219.8 N push and 184.7 N pull at 0.7 MPa. The theoretical maximum force is 32 kgf at 1.0 MPa.
No, this specific SKU does not include the -S magnet option, so it cannot accept CMSG, DMSG, or EMSG magnetic switches. You would need the -S variant for sensing. Additionally, while the 100 mm external adjuster shortens the extend stroke and the air cushion decelerates the piston, neither feature acts as a brake to hold the load on air loss.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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