Airtac MFCJ Adjustable Mini Cylinder MFCJ25X50-30S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X50-30S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø25mm bore and 50mm 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
- Stroke50 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 MFCJ25X50-30S
Trim the extend stroke by up to 30 mm on-site with the MFCJ25X50-30S, a JIS-standard round-body mini cylinder built for high-speed changeovers. The external adjuster lets you dial in the exact end position within a 20-50 mm window, while the needle-set variable air cushion at both ends soaks up end-of-stroke shock. Because the riveted SUS304 stainless barrel and aluminium covers form a shorter body than an ISO 6432 cylinder for the same stroke, it saves valuable mounting length and resists mild washdown.
Delivering 245.3 N of push force at 0.5 MPa (206.1 N pull) through a 1/8" port, this double-acting actuator handles dynamic positioning with ease. The -S suffix means a piston magnet is fitted for CMSG, DMSG or EMSG switches. For sizing, its safe working load is roughly 147 N, lifting about 12.5 kg vertically with a 2:1 margin.
Airtac MFCJ Adjustable Mini Cylinder MFCJ25X50-30S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ25X50-30S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 50 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 MFCJ25X50-30S
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×50 | 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 MFCJ25X50-30S Is Used
Component Trial Fits
Dial in the 30 mm extend window during short-stroke assembly changeovers, letting the air cushion absorb high-speed impacts without re-engineering the fixture.
Light Transfer Diverter
Pushes 12.5 kg packages vertically with a 2:1 margin, using the adjustable stop to fine-tune the divert distance on the fly.
Carton Forming Stop
Sets precise 20-50 mm end positions for folding flaps, while the SUS304 barrel handles occasional washdown in packaging lines.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ25X50-30S the Right Cylinder?
When choosing between bores, compare this 25 mm unit delivering 245.3 N push at 0.5 MPa against the MFCJ20 at 157 N for lighter tasks, or step up to the MFCJ32 at 402.2 N if your payload exceeds 15 kg. The adjustable stroke and dual air cushions are ideal for high-speed trial fits where both the end position and deceleration need tuning. Mount via LB foot, FA flange or TC trunnion (no SDB). Remember the cushion only decelerates near the stroke end; it is not a brake. To hold a load on 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 MFCJ25X50-30S FAQ
This 25 mm bore cylinder has a 1/8" port and an M10x1.25 male rod thread. At 0.5 MPa it pushes 245.3 N and pulls 206.1 N. At 0.7 MPa it pushes 343.4 N and pulls 288.5 N. The theoretical maximum force is 50 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 30 mm (usable range 20-50 mm); retract remains full. The -S suffix indicates a built-in piston magnet for CMSG, DMSG or EMSG sensors. The needle air cushion decelerates the piston near stroke end but does not lock the load.
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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.
Fast Reply
Most inquiries answered within 7-8 hours.
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