Airtac MFCJ Adjustable Mini Cylinder MFCJ20X75-30
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ20X75-30 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 MFCJ20X75-30
Trim the extend stroke by up to 30 mm on site with the AirTAC MFCJ20X75-30, a JIS-standard round-body mini cylinder built from SUS304 stainless steel and riveted aluminium covers. It delivers 157 N of push force at 0.5 MPa through a 1/8" port, making it a robust choice for compact actuation.
The integrated variable air cushion at both ends absorbs high-speed end-of-stroke shock, while the body is purposefully shorter than an ISO 6432 unit of the same bore and stroke. This non-magnet SKU cannot host position sensors; specify the -S variant if you require CMSG, DMSG, or EMSG switches.
Airtac MFCJ Adjustable Mini Cylinder MFCJ20X75-30 Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ20X75-30 |
|---|---|
| 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 MFCJ20X75-30
| 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 MFCJ20X75-30 Is Used
High-Speed Clamping
Tune the 30 mm extend window and set the needle cushion to softly stop the 157 N clamping force without slamming at high cycle rates.
Sorter Diverter
Adjust the extend end precisely for varying package sizes on a conveyor, relying on the variable air cushion to absorb the repetitive shock loads.
Trial Fit Assembly
Dial in the exact 45 to 75 mm extend position during machine commissioning, letting the cushion soak up end-of-stroke impact on sensitive parts.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ20X75-30 the Right Cylinder?
When sizing this 20 mm bore, its 157 N push force at 0.5 MPa yields a safe working load of roughly 94 N, or about 8 kg of vertical lift with a 2:1 margin. If your application demands more thrust, stepping up to the MFCJ25 provides 245.3 N at 0.5 MPa.
The 30 mm adjustable window is perfect for changeovers where the exact extend position and deceleration need tuning. Remember that the air cushion only decelerates the piston and does not lock the load; fit an external rod lock or pilot check valve if you need to hold position on air loss. Mounting options include LB foot, FA flange, and TC trunnion.
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 MFCJ20X75-30 FAQ
This 20 mm bore double-acting cylinder uses a 1/8" port and an Ø8 mm rod with an M8x1.25 male thread. 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 maximum of 32 kgf at 1.0 MPa.
No, this specific SKU lacks the internal magnet and cannot accept CMSG, DMSG, or EMSG switches. You must select the -S magnet variant if your application requires pneumatic position sensing.
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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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