Airtac MFCJ Adjustable Mini Cylinder MFCJ25X300-30S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X300-30S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø25mm bore and 300mm 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
- Stroke300 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 MFCJ25X300-30S
Dial in exact end positions and absorb high-speed shock with the AirTAC MFCJ25X300-30S, a JIS-standard round-body mini cylinder built from SUS304 stainless steel and riveted aluminium covers. An external adjuster lets you shorten the extend stroke by up to 30 mm on site, yielding a usable 270-300 mm extension, while the needle-set variable air cushion at both ends soaks up end-of-stroke impact. Because it is shorter than an ISO 6432 cylinder for the same bore and stroke, it saves valuable mounting length.
Featuring a 25 mm bore, Ø10 mm rod, and 1/8" port, this double-acting actuator delivers 245.3 N of push force at 0.5 MPa. The built-in magnet (-S) supports CMSG, DMSG, or EMSG switches for position sensing. For sizing, it provides a safe working load of about 147 N, lifting roughly 12.5 kg vertically with a 2:1 margin. Note that the cushion only decelerates the piston; it is not a lock or brake.
Airtac MFCJ Adjustable Mini Cylinder MFCJ25X300-30S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ25X300-30S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 300 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 MFCJ25X300-30S
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×300 | 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 MFCJ25X300-30S Is Used
Adjustable Tooling Stops
Fine-tune the 270-300 mm extend stroke by up to 30 mm during machine changeovers, using the variable air cushion to smoothly stop the 245.3 N thrust without slamming.
High-Speed Diverters
Sort lightweight goods on a line by dialing in the exact extend position, relying on the needle cushion to absorb high-speed kinetic energy at the end of travel.
Vertical Lift Gates
Lift loads up to about 12.5 kg with a 2:1 safety margin, adjusting the stroke on site to fit varying package sizes while the SUS304 barrel resists mild washdown.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ25X300-30S the Right Cylinder?
When sizing this actuator, weigh the 245.3 N push force at 0.5 MPa against adjacent bores: the MFCJ20 yields 157 N, while the MFCJ32 provides 402.2 N. Choose the 25 mm bore when your application requires moderate force and the flexibility to fine-tune the extend stroke on the fly. The 30 mm adjustment window is ideal for trial fits and high-speed changeovers where exact end positions vary.
Mounting options include LB foot, FA flange, and TC trunnion (no SDB or back-cover code is available). Because this SKU includes the -S magnet, you can directly mount CMSG, DMSG, or EMSG sensors. Remember that a standard cylinder does not hold position on air loss—the piston drifts—so install an external rod lock or pilot check valve if you need to suspend a load safely.
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 MFCJ25X300-30S FAQ
This 25 mm bore cylinder features a 1/8" port and a Ø10 mm rod. 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. Operating pressure ranges from 0.15 to 1.0 MPa.
The external adjuster shortens the extend stroke by up to 30 mm, giving a usable 270-300 mm extension. The variable air cushion at both ends only decelerates the piston near stroke end—it is not a lock or brake. The piston will drift on air loss, so use an external rod lock for position holding. The -S magnet allows CMSG, DMSG, or EMSG sensors.
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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.
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Most inquiries answered within 7-8 hours.
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