Airtac MFCJ Adjustable Mini Cylinder MFCJ20X100-50S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ20X100-50S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 100mm 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
- Stroke100 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM8×1.25
- CushionVariable air cushion, both ends
About the Airtac MFCJ Adjustable Mini Cylinder MFCJ20X100-50S
Dial in exact end positions on-site with this double-acting JIS-standard round-body mini cylinder, which features a 50 mm external stroke adjuster and variable air cushions at both ends. The SUS304 stainless steel barrel and riveted aluminium covers yield a body that is physically shorter than a comparable ISO 6432 unit, saving valuable mounting length in tight machinery.
Generating 157 N of push force at 0.5 MPa through a 1/8" port, this 20 mm bore unit lifts about 8 kg vertically with a 2:1 safety margin. Because this SKU includes the -S magnet, it is fully ready for CMSG, DMSG, or EMSG position sensing right out of the box.
Airtac MFCJ Adjustable Mini Cylinder MFCJ20X100-50S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ20X100-50S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 100 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 MFCJ20X100-50S
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×100 | 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 MFCJ20X100-50S Is Used
Light-Part Ejection
Tunes the extend endpoint within a 50 mm window to strike small plastic parts cleanly while the variable air cushion absorbs the 8 kg load impact at high speed.
Package Diverter
Adjusts the pusher stroke on the fly for mixed carton sizes, using the 157 N thrust to redirect lightweight boxes without slamming at the end of travel.
Lab Test Actuator
Provides a compact SUS304 stainless body for mild washdown environments, letting operators fine-tune the extend distance for delicate sensor calibration cycles.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ20X100-50S the Right Cylinder?
When sizing these adjustable-stroke units, compare the real thrust: this 20 mm bore provides 157 N push at 0.5 MPa, while stepping up to the 25 mm bore yields 245.3 N. Choose the 20 mm variant for lighter, high-speed changeovers where shock-sensitive trial fits demand a finely tuned needle air cushion at stroke end.
The external adjuster shortens the extend stroke by up to 50 mm but does not lock the piston mid-travel; for load holding on air loss, install an external rod lock or pilot check valve. Mount via LB foot, FA flange, or TC trunnion (no SDB), and rely on the built-in magnet for electronic or reed switch feedback.
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 MFCJ20X100-50S FAQ
This 20 mm bore cylinder uses a 1/8" port and generates 157 N push / 131.9 N pull at 0.5 MPa, 219.8 N push / 184.7 N pull at 0.7 MPa, with a theoretical maximum of 32 kgf at 1.0 MPa. It operates at 30-800 mm/s.
The external adjuster shortens the extend stroke by up to 50 mm on-site, while the needle-set variable air cushion at both ends decelerates the piston near stroke end for smooth high-speed motion. The -S suffix means it has a built-in magnet 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 usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
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