Airtac MFCJ Adjustable Mini Cylinder MFCJ20X80-100
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ20X80-100 is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 80mm 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
- Stroke80 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 MFCJ20X80-100
Dial in exact end positions and absorb high-speed shock with the AirTAC MFCJ20X80-100. This double-acting JIS-standard round-body mini cylinder features a 100 mm adjustable window to shorten the extend stroke on site, paired with a variable air cushion at both ends for smooth deceleration. The SUS304 stainless steel barrel and riveted aluminium covers deliver reliable mild-corrosion resistance, while the compact body is specifically shorter than an ISO 6432 unit for the same 20 mm bore and 80 mm stroke—saving valuable mounting length.
Generating 157 N of push force at 0.5 MPa (131.9 N pull), it fits light-duty tasks perfectly. A practical computed insight: this yields a safe working load of about 94 N, lifting roughly 8 kg vertically with a 2:1 margin. The 1/8" port and M8x1.25 male rod thread simplify integration. Note this SKU lacks the -S magnet, so it cannot accept CMSG, DMSG, or EMSG position switches.
Airtac MFCJ Adjustable Mini Cylinder MFCJ20X80-100 Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ20X80-100 |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 80 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 MFCJ20X80-100
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×80 | 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 MFCJ20X80-100 Is Used
Light-Part Trial Fits
Use the 100 mm adjuster to fine-tune the extend position during changeovers on small assembly tooling, absorbing end-of-stroke shock smoothly for parts weighing under 8 kg.
High-Speed Diverting
Leverage the variable air cushion to quietly stop the piston at high speeds when sorting lightweight goods, relying on the 157 N push force to actuate diverter arms reliably.
Lab Automation Jigs
Fit the compact JIS-standard round body into tight test fixtures; the SUS304 barrel handles mild washdown while the external adjuster dials in the exact 0-80 mm extend length needed.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ20X80-100 the Right Cylinder?
When sizing these adjustable-stroke units, compare the real thrust figures: this MFCJ20 bore pushes 157 N at 0.5 MPa, whereas stepping up to the MFCJ25 provides 245.3 N. Choose the 20 mm bore for lighter, high-speed changeovers where exact stroke length and end-of-stroke shock both need field tuning. The needle air cushion only decelerates the piston near the end of travel—it is not a lock or brake. If the application requires the load to be held on air loss, add an external rod lock or pilot-operated check valve, as the piston will drift.
Mounting options include LB foot, FA flange, and TC trunnion (there is no SDB or back-cover option on this build). Because this specific model has no -S magnet, it cannot support magnetic sensing; if position feedback is required, select the -S variant to enable CMSG, DMSG, or EMSG switches.
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 MFCJ20X80-100 FAQ
This 20 mm bore cylinder has a 1/8" port and generates 157 N push / 131.9 N pull at 0.5 MPa, and 219.8 N push / 184.7 N pull at 0.7 MPa. The theoretical maximum force is 32 kgf at 1.0 MPa.
This specific SKU lacks the -S magnet, so it cannot accept CMSG, DMSG, or EMSG switches. The external adjuster only shortens the extend stroke by up to 100 mm, and the variable air cushion only decelerates the piston; neither holds the load on air loss, so use an external rod lock if needed.
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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.
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Most inquiries answered within 7-8 hours.
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