Airtac MFCJ Adjustable Mini Cylinder MFCJ25X80-50S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X80-50S 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 MFCJ25X80-50S
Trim the extend stroke by up to 50 mm on site with this adjustable-stroke, variable-cushion mini cylinder. The external needle sets a smooth deceleration at both ends for high-speed motion, while the built-in magnet (-S) supports CMSG, DMSG, or EMSG sensors.
Built as a JIS-standard round-body unit with a SUS304 stainless barrel and riveted aluminium covers, it is shorter than an ISO 6432 cylinder for the same 25 mm bore and 80 mm stroke. It pushes with 245.3 N at 0.5 MPa (1/8" port, M10x1.25 rod). For vertical lifting, expect a safe working load of about 147 N, lifting roughly 12.5 kg with a 2:1 margin.
Airtac MFCJ Adjustable Mini Cylinder MFCJ25X80-50S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ25X80-50S |
|---|---|
| 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 MFCJ25X80-50S
| 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 MFCJ25X80-50S Is Used
High-Speed Component Pressing
Dial in the exact 30 to 80 mm extend distance and tune the needle cushion to press lightweight fittings without impact shock, using the 245.3 N thrust.
Variable-Length Diverting
Adjust the stroke by up to 50 mm on the fly to handle changing package sizes on a line, relying on the cushion to absorb the kinetic energy of rapid retraction.
Vertical Lift Stops
Lift loads up to roughly 12.5 kg in sorting stations. The built-in magnet tracks position, while the cushion ensures quiet stops at the end of travel.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ25X80-50S the Right Cylinder?
Selecting between the available bores means balancing thrust and footprint. This 25 mm bore yields 245.3 N of push force at 0.5 MPa, sitting comfortably between the smaller MFCJ20 at 157 N and the larger MFCJ32 at 402.2 N. The 50 mm adjustable window is ideal for high-speed changeovers where you need to tune both the end position and the air cushion to prevent shock during trial fits.
Mount using LB foot, FA flange, or TC trunnion brackets (no SDB or back-cover option exists for this build). The -S magnet enables electronic or reed switches. Remember that the cushion only decelerates the piston near stroke end; it does not act as a brake. If you need to hold a load vertically during air loss, install an external rod lock or pilot check valve.
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 MFCJ25X80-50S FAQ
This double-acting cylinder has a 1/8" port and an M10x1.25 male rod 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. It features a variable air cushion at both ends and operates at speeds of 30-800 mm/s.
The external adjuster shortens the extend stroke by up to 50 mm, giving a usable extend range of 30 to 80 mm; the retract stroke remains full. The -S suffix means a piston magnet is included for CMSG, DMSG, or EMSG sensors. The air cushion only decelerates the piston near the end of travel and does not lock or hold the load—if you need position holding on air loss, use an external rod lock or pilot check valve.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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