Airtac MFCJ Adjustable Mini Cylinder MFCJ25X20-10S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X20-10S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø25mm bore and 20mm 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
- Stroke20 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 MFCJ25X20-10S
Dial in exact end positions and absorb high-speed shock with the AirTAC MFCJ25X20-10S, a JIS-standard round-body mini cylinder built with a SUS304 stainless barrel and riveted aluminium covers. An external adjuster shortens the extend stroke by up to 10 mm on site, while needle-set variable air cushions at both ends soak up end-of-stroke impact. Because it uses a riveted rolling-packed construction, the overall body is shorter than an ISO 6432 cylinder for the same 25 mm bore and 20 mm stroke, saving valuable mounting length.
Delivering 245.3 N push and 206.1 N pull at 0.5 MPa, this double-acting actuator handles light automation tasks well; the safe working load is roughly 147 N, lifting about 12.5 kg vertically with a 2:1 margin. The -S suffix denotes a built-in piston magnet for CMSG, DMSG or EMSG switches. It features a 1/8" port, an Ø10 mm rod with an M10x1.25 male thread, and operates at 30-800 mm/s across a 0.15-1.0 MPa pressure range.
Airtac MFCJ Adjustable Mini Cylinder MFCJ25X20-10S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ25X20-10S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 20 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 MFCJ25X20-10S
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×20 | 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 MFCJ25X20-10S Is Used
Micro-Clamp Actuation
Tunes the exact 10-20 mm extend reach on delicate machining clamps, using the variable air cushion to prevent marking parts during rapid 245.3 N actuation.
Light Divertor Arms
Adjusts the stroke end-position on the fly for conveyor changeovers, absorbing high-speed shock with needle cushions while handling the 147 N safe working load.
Small Component Pushers
Feeds lightweight parts precisely, relying on the SUS304 stainless barrel for washdown resistance and the -S magnet for DMSG position confirmation.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ25X20-10S the Right Cylinder?
When sizing this adjustable series, compare the real thrust figures: the MFCJ20 provides 157 N of push force at 0.5 MPa, this MFCJ25 hits 245.3 N, and the larger MFCJ32 delivers 402.2 N. Choose the 25 mm bore when your changeover requires precise extend tuning within that 10 mm window alongside moderate force. The variable air cushion is essential for shock-sensitive trial fits running at high speed, letting you needle-set the deceleration independently at each end.
Remember that the cushion only decelerates the piston near stroke end and the adjuster sets the end position—neither acts as a lock or brake. The piston will drift on air loss, so fit an external rod lock or pilot-operated check valve if you need to hold a vertical load. For mounting, use LB foot, FA flange or TC trunnion brackets; there is no SDB or back-cover option on this build, and the integrated magnet (-S) is required if you plan to use CMSG, DMSG or EMSG sensors.
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 MFCJ25X20-10S FAQ
This 25 mm bore double-acting cylinder uses a 1/8" air port and an M10x1.25 male rod thread on 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 10 mm (usable range 10-20 mm), and the variable air cushion at both ends decelerates the piston near stroke end. It is not a brake; the piston drifts on air loss, so use an external rod lock for holding. The -S magnet enables 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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