Airtac MFCJ Adjustable Mini Cylinder MFCJ20X225-75S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ20X225-75S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 225mm 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
- Stroke225 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 MFCJ20X225-75S
Dial in exact end positions on-site with the MFCJ20X225-75S, a JIS-standard round-body stainless mini cylinder offering a 75 mm adjustable extend window (usable range 150-225 mm). Built with a SUS304 stainless barrel and riveted aluminium covers, this double-acting actuator is shorter than an ISO 6432 cylinder for the same bore and stroke, saving valuable mounting length while resisting mild washdown.
Driven by a 1/8" port and Ø8 mm rod, it delivers 157 N of push force at 0.5 MPa. The integrated variable air cushion at both ends soaks up high-speed shock for smooth deceleration. With a safe working load around 94 N, it lifts about 8 kg vertically with a 2:1 margin. The built-in -S magnet supports CMSG, DMSG and EMSG switches for position sensing.
Airtac MFCJ Adjustable Mini Cylinder MFCJ20X225-75S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ20X225-75S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 225 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 MFCJ20X225-75S
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×225 | 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 MFCJ20X225-75S Is Used
Light-Part Trial Fit
Use the 75 mm extend adjuster to dial in exact contact points on delicate 8 kg assemblies, relying on the variable air cushion to prevent impact damage during high-speed changeovers.
Compact Divert Gate
Fit the shorter-than-ISO-6432 body into tight transfer stations, adjusting the stroke on-site to accommodate different package widths without swapping cylinders.
Lab Test Actuator
Leverage the 157 N push force and needle-set cushion for smooth, repeatable testing of light components, using the -S magnet to trigger CMSG sensors at variable end points.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ20X225-75S the Right Cylinder?
When sizing this series, compare the bores directly: this 20 mm bore provides 157 N push at 0.5 MPa, while stepping up to an MFCJ25 yields 245.3 N. Choose the 20 mm when space is tight and the load is light. The 75 mm adjustable stroke window is ideal for high-speed changeovers or trial fits where the exact extend position and end-of-stroke shock both need fine-tuning via the needle cushion. Foot (LB), flange (FA) and trunnion (TC) mounts are available, but note there is no SDB mount or back cover on this adjustable build.
Remember that the air cushion and external adjuster only decelerate the piston and set the end position—they do not lock the load. If air pressure drops, the piston will drift. For suspended or vertical loads that must hold position on air loss, install an external rod lock or pilot-operated check valve. The -S magnet on this unit enables CMSG, DMSG or EMSG sensors for precise 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 MFCJ20X225-75S 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 maximum of 32 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa.
The external adjuster shortens the extend stroke by up to 75 mm (usable range 150-225 mm), while the variable air cushion at both ends uses a needle valve to absorb high-speed shock. The cushion only decelerates the piston; it does not lock or hold the load on air loss. The -S magnet allows CMSG, DMSG and EMSG sensors for position feedback.
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.
Related AirTAC MFCJ Cylinders
Request a Quote for Airtac MFCJ Adjustable Mini Cylinder MFCJ20X225-75S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.