Airtac MFCJ Adjustable Mini Cylinder MFCJ20X75-20
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ20X75-20 is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 75mm 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
- Stroke75 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 MFCJ20X75-20
Dial in exact end positions and absorb high-speed shock with the AirTAC MFCJ20X75-20 adjustable-stroke mini cylinder. This JIS-standard round-body actuator uses a 1/8" port and an external adjuster to shorten the extend stroke by up to 20 mm on-site, yielding a usable 55-75 mm extend range while retract remains full. A needle variable air cushion at both ends soaks up end-of-stroke impact for smooth deceleration.
Built with a SUS304 stainless barrel and riveted aluminium covers, the compact body is shorter than an ISO 6432 cylinder for the same 20 mm bore and 75 mm stroke, saving valuable mounting length while resisting mild washdown. Generating 157 N of push force at 0.5 MPa, it handles a safe working load of roughly 94 N. Note this SKU lacks the -S magnet, so it cannot accept CMSG/DMSG/EMSG position switches.
Airtac MFCJ Adjustable Mini Cylinder MFCJ20X75-20 Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ20X75-20 |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 75 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 MFCJ20X75-20
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×75 | 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 MFCJ20X75-20 Is Used
Light Part Trial Fits
Use the 20 mm adjustable window to fine-tune the extend position during short-run changeovers, letting the 94 N safe working load press delicate components without fixed hard stops.
High-Speed Diverter Gates
Leverage the variable air cushion to silently absorb end-of-stroke shock on fast diverting arms, preventing bounce while routing lightweight packages at high cycle rates.
Compact Sorting Pushers
Fit the shorter-than-ISO-6432 stainless body into tight conveyor gaps, using the 157 N thrust to push small items precisely across a 55-75 mm adjustable stroke.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ20X75-20 the Right Cylinder?
When sizing these double-acting cylinders, compare the real thrust: this 20 mm bore provides 157 N push at 0.5 MPa, whereas stepping up to an MFCJ25 yields 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 20 mm adjuster window is ideal for trial fits where the final extend position is not yet fixed.
Mount using LB foot, FA flange, or TC trunnion brackets (no SDB or back-cover mount exists on this adjustable build). Remember that the air cushion only decelerates the piston near the stroke end—it is not a lock or brake. If the application must hold a vertical load on air loss, add an external rod lock or pilot-operated check valve, as the piston will drift. Since this specific code lacks the -S suffix, it cannot support magnetic sensors; order the -S variant if position feedback is required.
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 MFCJ20X75-20 FAQ
This 20 mm bore cylinder features a 1/8" port and an 8 mm rod with an M8x1.25 male thread. It delivers 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 of 32 kgf at 1.0 MPa. The 75 mm base stroke is adjustable down by 20 mm, and it operates at speeds of 30-800 mm/s.
No, this specific SKU does not include the -S magnet, so it cannot accept CMSG, DMSG, or EMSG switches. You must order the -S variant for position sensing. Additionally, the external adjuster only shortens the extend stroke end position—it does not act as a mid-stroke lock or brake.
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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.
Fast Reply
Most inquiries answered within 7-8 hours.
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