Airtac MFCJ Adjustable Mini Cylinder MFCJ25X80-20
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X80-20 is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø25mm bore and 80mm 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.
- BoreØ25 mm
- Stroke80 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM10×1.25
- 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 MFCJ25X80-20
Trim the extend stroke by up to 20 mm on site with the AirTAC MFCJ25X80-20, yielding a usable 60-80 mm forward travel while retract remains full. This JIS-standard round-body mini cylinder pairs that external adjuster with a needle variable air cushion at both ends to soak up high-speed end-of-stroke shock.
Built with a SUS304 stainless barrel and riveted aluminium covers, the body is deliberately shorter than an ISO 6432 unit for the same 25 mm bore and 80 mm stroke, saving mounting length. It pushes with 245.3 N and pulls with 206.1 N at 0.5 MPa via a 1/8" port. This translates to a safe working load of about 147 N, or roughly 12.5 kg vertical lift with a 2:1 margin. Note this SKU lacks the -S magnet, so it cannot take CMSG/DMSG/EMSG sensors.
Airtac MFCJ Adjustable Mini Cylinder MFCJ25X80-20 Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ25X80-20 |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 80 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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 (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 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 MFCJ25X80-20
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×80 | 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 MFCJ25X80-20 Is Used
Changeover Dial-In
Perfect for trial-fit stations where the 60-80 mm extend must be fine-tuned on the fly and the 245.3 N push force secures light tooling.
High-Speed Diverting
Use the needle air cushions to silently stop the piston at the adjusted end point without slamming, protecting small package diverters.
Compact Vertical Lift
Lifts about 12.5 kg vertically with a 2:1 safety margin, while the shorter-than-ISO-6432 JIS body fits into tight elevator enclosures.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ25X80-20 the Right Cylinder?
When sizing this series, compare the real thrust: the 25 mm bore gives 245.3 N push at 0.5 MPa, sitting neatly between the 157 N of an MFCJ20 and the 402.2 N of an MFCJ32. Choose the 25 mm bore when your changeover needs moderate force plus the ability to dial in the exact end position and tune the cushion for sensitive trial fits.
Mounting options include LB foot, FA flange, and TC trunnion (there is no SDB or back-cover option on this adjustable build). Remember that the air cushion only decelerates the piston near the end of travel—it is not a lock or brake. If the load must hold position on air loss, add an external rod lock or pilot check valve. Because this specific SKU has no -S magnet, magnetic sensing is impossible without switching to the -S variant.
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 MFCJ25X80-20 FAQ
This 25 mm bore cylinder features a 1/8" port and a 10 mm rod with M10x1.25 thread. It generates 245.3 N push and 206.1 N pull at 0.5 MPa, or 343.4 N push and 288.5 N pull at 0.7 MPa. The theoretical maximum force is 50 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 20 mm (usable 60-80 mm), while the needle variable air cushion at both ends decelerates the piston near stroke end for smooth high-speed stops. This specific SKU lacks the -S magnet, so it cannot accept 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.
Related AirTAC MFCJ Cylinders
Request a Quote for Airtac MFCJ Adjustable Mini Cylinder MFCJ25X80-20
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.