Airtac MFCJ Adjustable Mini Cylinder MFCJ25X80-30S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X80-30S 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 MFCJ25X80-30S
Tune both the extend end-point and the end-of-stroke shock on site with this AirTAC adjustable-stroke, variable-cushion mini cylinder. The external adjuster shortens the extend stroke by up to 30 mm (usable 50-80 mm), while needle air cushions at both ends soak up high-speed impact for smooth, quiet motion.
Built as a JIS-standard round-body unit with a SUS304 stainless barrel and riveted aluminium covers, it delivers 245.3 N push force at 0.5 MPa through a 1/8" port. This compact body is shorter than an ISO 6432 cylinder for the same bore and stroke, saving valuable mounting length. The built-in magnet (-S) supports CMSG, DMSG, or EMSG sensors, and the design yields a safe working load of roughly 147 N, lifting about 12.5 kg vertically with a 2:1 margin.
Airtac MFCJ Adjustable Mini Cylinder MFCJ25X80-30S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ25X80-30S |
|---|---|
| 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 MFCJ25X80-30S
| 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 MFCJ25X80-30S Is Used
High-Speed Component Pressing
Dial in the exact 50-80 mm extend position for pressing small bearings, using the variable air cushion to absorb the 245.3 N end impact without shock.
Adjustable Diverter Stroke
Fine-tune the actuator length on the fly during product changeovers, relying on the 30 mm adjuster window to set precise diverting distances.
Delicate Carton Sealing
Lift loads up to 12.5 kg vertically and gently seat the sealing head, tweaking the extend end-point to accommodate various package heights.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ25X80-30S the Right Cylinder?
Choose between the available bores based on your force requirements: the MFCJ20 provides 157 N of push force at 0.5 MPa for lighter duties, this MFCJ25 hits 245.3 N, and the larger MFCJ32 outputs 402.2 N. This 25 mm bore is ideal when you need moderate thrust combined with on-site stroke tuning to perfect a high-speed changeover or a shock-sensitive trial fit.
Mounting options include LB foot, FA flange, and TC trunnion (no SDB or back-cover). Note that the air cushion only decelerates the piston near the stroke end; it is not a lock. If the application must hold a load on air loss, add an external rod lock or pilot-operated check valve, as the piston will drift.
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 MFCJ25X80-30S FAQ
This double-acting cylinder features a 1/8" port and a 10 mm rod with an M10x1.25 male thread. It generates 245.3 N push and 206.1 N pull at 0.5 MPa, 343.4 N push and 288.5 N pull at 0.7 MPa, with a theoretical maximum force of 50 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 30 mm (usable range 50-80 mm); retract remains full. The -S suffix indicates a built-in piston magnet for CMSG, DMSG, or EMSG switches. The variable air cushion only decelerates the piston near the end and does not lock the load.
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.
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