Airtac MFCJ Adjustable Mini Cylinder MFCJ20X80-10S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ20X80-10S 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 MFCJ20X80-10S
Dial in exact end positions and absorb high-speed shock with this double-acting, JIS-standard round-body mini cylinder. The external adjuster shortens the extend stroke by up to 10 mm on site, while the needle-set variable air cushion at both ends ensures smooth deceleration. Featuring a SUS304 stainless barrel and riveted aluminium covers, the riveted rolling-packed construction is shorter than an ISO 6432 cylinder for the same 20 mm bore and 80 mm stroke, saving valuable mounting length.
Driven by a 1/8" port and an Ø8 mm rod with M8x1.25 male threading, this unit delivers 157 N of push force at 0.5 MPa. The included -S piston magnet supports CMSG, DMSG, and EMSG position switches. For sizing context, its safe working load is roughly 94 N, meaning it lifts about 8 kg vertically with a 2:1 margin.
Airtac MFCJ Adjustable Mini Cylinder MFCJ20X80-10S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ20X80-10S |
|---|---|
| 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 MFCJ20X80-10S
| 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 MFCJ20X80-10S Is Used
Micro-Clamp Actuation
Tunes the extend stroke by up to 10 mm to dial in clamping depth on delicate electronic components, using the 157 N push force without crushing parts.
Light Diverting Arms
Leverages the variable air cushion to silently stop the diverting arm at high speeds, preventing impact bounce on small packaging lines.
Lab Automation Trial Fits
Ideal for prototype changeovers where the exact 70-80 mm extend position needs on-site tweaking and repeatable high-speed cycling.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ20X80-10S the Right Cylinder?
When choosing between bores, this 20 mm option provides 157 N push at 0.5 MPa, whereas the larger MFCJ25 generates 245.3 N at the same pressure. Select the 20 mm bore for lighter, faster changeovers where precise trial fits and end-of-stroke tuning are critical. The 10 mm adjustable window is ideal for shimming out minor position discrepancies without remounting hardware.
Keep in mind the variable air cushion only decelerates the piston near the end of travel; it does not function as a lock or brake. If your application must hold a load vertically during air loss, add an external rod lock or pilot-operated check valve. Mounting options include LB foot, FA flange, and TC trunnion (no SDB or back-cover mount is available on this adjustable build).
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 MFCJ20X80-10S FAQ
This 20 mm bore cylinder features a 1/8" port and an Ø8 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 force of 32 kgf at 1.0 MPa. Operating pressure ranges from 0.15 to 1.0 MPa.
The external adjuster shortens the extend stroke by up to 10 mm on site (usable extend 70-80 mm), while the retract stroke remains full. The needle-set variable air cushion at both ends decelerates the piston to absorb high-speed shock, but it is not a brake. The -S suffix means a magnet is built-in for CMSG, DMSG, or EMSG sensors.
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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