Airtac MFCJ Adjustable Mini Cylinder MFCJ25X100-20S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X100-20S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø25mm bore and 100mm 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
- Stroke100 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 MFCJ25X100-20S
Dial in exact end positions and absorb high-speed shock with the AirTAC MFCJ25X100-20S. This double-acting JIS-standard round-body mini cylinder features a 20mm external adjuster that shortens the extend stroke on-site, giving a usable extend range of 80-100mm, paired with a variable air cushion at both ends for smooth deceleration.
Built with a SUS304 stainless barrel and riveted aluminium covers, the body is shorter than an ISO 6432 cylinder for the same 25mm bore and 100mm stroke, saving valuable mounting length. Delivering 245.3N push force at 0.5MPa via a 1/8" port, it handles a safe working load of about 147N. The -S suffix means a built-in magnet supports CMSG, DMSG, or EMSG sensors.
Airtac MFCJ Adjustable Mini Cylinder MFCJ25X100-20S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ25X100-20S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 100 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 MFCJ25X100-20S
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×100 | 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 MFCJ25X100-20S Is Used
Adjustable Tooling Stops
Fine-tune the 80-100mm extend position on machining fixtures to accommodate part variations, relying on the 245.3N thrust to consistently push components into place.
High-Speed Diverting
Use the needle air cushions to silently absorb end-of-stroke shock during rapid package diverting, preventing bounce while handling a 12.5kg vertical lift load.
Lab Automation Trial Fits
Perfect for research equipment where the exact extend length must be dialed in on-site, leveraging the compact JIS body to save space in tight enclosures.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ25X100-20S the Right Cylinder?
When sizing this series, compare the real thrust outputs: the 25mm bore provides 245.3N push at 0.5MPa, sitting neatly between the smaller MFCJ20 at 157N and the larger MFCJ32 at 402.2N. Choose the 25mm bore when you need approximately 147N of safe working load, or about 12.5kg of vertical lift with a 2:1 margin. The adjustable stroke and dual needle air cushions are perfect for high-speed changeovers and shock-sensitive trial fits where both the end position and deceleration need fine-tuning.
Remember that the air cushion only decelerates the piston near stroke end—it is not a lock or brake. If the application requires the load to hold position on air loss, add an external rod lock or pilot-operated check valve. For mounting, select LB foot, FA flange, or TC trunnion brackets (SDB and back-cover mounts are unavailable on this build).
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 MFCJ25X100-20S FAQ
This 25mm bore cylinder uses a 1/8" port and a 10mm rod with M10x1.25 male thread. It generates 245.3N push and 206.1N pull at 0.5MPa, 343.4N push and 288.5N pull at 0.7MPa, with a theoretical maximum of 50kgf at 1.0MPa.
The external adjuster shortens the extend stroke by up to 20mm on-site, yielding an 80-100mm usable range; retract remains full. The -S suffix denotes a built-in magnet for CMSG, DMSG, or EMSG switches. The variable air cushions only decelerate the piston and do 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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