Airtac MFCJ Adjustable Mini Cylinder MFCJ20X15-20S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ20X15-20S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 15mm 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
- Stroke15 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 MFCJ20X15-20S
Tune both the extend end-point and the end-of-stroke deceleration on-site with this 20 mm bore JIS-standard round-body mini cylinder. The external adjuster shortens the extend stroke within a 20 mm window, while the needle-set variable air cushion at both ends soaks up high-speed shock for smooth, quiet motion. Its riveted SUS304 stainless barrel and aluminium covers form a compact body that is shorter than an ISO 6432 cylinder for the same bore and stroke, saving valuable mounting length.
Delivering 157 N of push force at 0.5 MPa, this double-acting actuator is built for lighter loads. It yields a safe working load of about 94 N, lifting roughly 8 kg vertically with a 2:1 margin. The -S suffix indicates a built-in piston magnet, allowing CMSG, DMSG, or EMSG switches to track position. The 1/8" port and M8x1.25 male rod thread complete the pneumatic interface.
Airtac MFCJ Adjustable Mini Cylinder MFCJ20X15-20S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ20X15-20S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 15 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 MFCJ20X15-20S
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×15 | 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 MFCJ20X15-20S Is Used
Light-Part Trial Fits
Dial in the exact extend distance up to 15 mm during prototype changeovers, using the 20 mm adjuster window to perfect the placement of delicate 8 kg assemblies.
High-Speed Diverter
Sort small items at speed with a 157 N push force, relying on the variable air cushion to silently decelerate the piston and prevent end-cap shock.
Lab Dispense Positioning
Fine-tune the extend endpoint for precise fluid dispensing, leveraging the SUS304 stainless barrel for mild washdown resistance in lab environments.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ20X15-20S the Right Cylinder?
When sizing this adjustable series, compare the real thrust figures: this 20 mm bore provides 157 N push at 0.5 MPa, while stepping up to the MFCJ25 yields 245.3 N. Choose the 20 mm bore for lighter, high-speed changeovers where exact positioning and shock absorption must be dialed in on the fly. The variable air cushion only decelerates the piston near the stroke end; it does not act as a lock or brake. If the 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 styles, with no SDB or back-cover available on this adjustable build. Because this SKU includes the -S magnet, it is fully ready for CMSG, DMSG, or EMSG sensor integration.
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 MFCJ20X15-20S FAQ
This 20 mm bore cylinder features a 1/8" port and an M8x1.25 male rod thread. At 0.5 MPa it provides 157 N push and 131.9 N pull force. At 0.7 MPa it provides 219.8 N push and 184.7 N pull. The theoretical maximum force is 32 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 20 mm on-site, and the variable air cushion at both ends decelerates the piston near the stroke end. The cushion is not a brake and does not hold the load on air loss; for position holding, use an external rod lock. The -S suffix means it has a 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 are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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