Airtac MFCJ Adjustable Mini Cylinder MFCJ25X175-30S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X175-30S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø25mm bore and 175mm 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
- Stroke175 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 MFCJ25X175-30S
Tune both the extend reach and end-of-travel shock on site with this double-acting, variable-cushion mini cylinder. An external adjuster lets you shorten the extend stroke by up to 30 mm (usable range 145-175 mm), while needle air cushions at both ends absorb high-speed impact. The 1/8" port and Ø10 mm rod deliver 245.3 N push at 0.5 MPa.
Built to JIS standards with a SUS304 stainless barrel and riveted aluminium covers, this round-body unit is shorter than an ISO 6432 cylinder of the same bore and stroke, saving valuable mounting length. The -S suffix means a piston magnet is fitted for CMSG/DMSG/EMSG sensors. With a safe working load around 147 N, it lifts about 12.5 kg vertically with a 2:1 margin.
Airtac MFCJ Adjustable Mini Cylinder MFCJ25X175-30S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ25X175-30S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 175 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 MFCJ25X175-30S
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×175 | 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 MFCJ25X175-30S Is Used
Adjustable Tooling Stops
Dial in the exact 145-175 mm extend position for multi-part machining fixtures, relying on the needle cushion to soften the stop at high cycling speeds.
High-Speed Diverters
Sort lightweight goods on a line using the 245.3 N push force, tweaking the 30 mm stroke window on site to accommodate varying package sizes without shock.
Vertical Lift Gates
Lift roughly 12.5 kg access flaps or stops with a 2:1 safety margin, using the built-in -S magnet to confirm gate position via reed switches.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ25X175-30S the Right Cylinder?
Choose between the 20, 25, 32, and 40 mm bores based on your force needs. This 25 mm bore gives 245.3 N push at 0.5 MPa; stepping up to the MFCJ32 yields 402.2 N, while the MFCJ20 offers 157 N. The 30 mm adjustable window here is perfect for changeovers where the exact extend position and deceleration need dialling in.
Mount using LB foot, FA flange, or TC trunnion brackets. Remember that the air cushion only decelerates the piston near stroke end—it does not lock or hold the load. If you need to prevent drift on air loss, add 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 MFCJ25X175-30S 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 of 50 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 30 mm (usable range 145-175 mm); retract remains full. The variable air cushion at both ends decelerates the piston near stroke end for smooth stops, but it is not a brake. The -S suffix indicates a built-in magnet for CMSG/DMSG/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.
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