Airtac MFCJ Adjustable Mini Cylinder MFCJ25X250-100
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X250-100 is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø25mm bore and 250mm 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
- Stroke250 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 MFCJ25X250-100
Dial in the exact extend position on-site with the AirTAC MFCJ25X250-100, a JIS-standard round-body mini cylinder featuring a 100 mm adjustable stroke window. Built with a SUS304 stainless steel barrel and riveted aluminium covers, this double-acting actuator delivers a 245.3 N push force at 0.5 MPa. The needle-set variable air cushion at both ends soaks up high-speed end-of-stroke shock, ensuring smooth deceleration without acting as a physical lock.
Because the riveted MF body is shorter than a comparable ISO 6432 cylinder for the same 25 mm bore and 250 mm stroke, it saves valuable mounting length. This non-magnet SKU cannot accept a position sensor; add the -S variant for CMSG, DMSG, or EMSG switches. With a 1/8" port and a safe working load around 147 N, it lifts about 12.5 kg vertically with a 2:1 margin.
Airtac MFCJ Adjustable Mini Cylinder MFCJ25X250-100 Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ25X250-100 |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 250 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 MFCJ25X250-100
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×250 | 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 MFCJ25X250-100 Is Used
Stroke Trial Fitting
Use the 100 mm adjuster to find the optimal 150 to 250 mm extend endpoint during prototype assembly without machining new spacers.
High-Speed Diverting
Leverage the variable air cushion to absorb shock when pushing 12.5 kg packages at speeds up to 800 mm/s without harsh impacts.
Compact Clamping
Fit the shorter-than-ISO-6432 stainless body into tight machinery cells to deliver 245.3 N of clamping force in washdown-prone areas.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ25X250-100 the Right Cylinder?
When sizing this actuator, compare the real thrust figures: the MFCJ20 provides 157 N of push force at 0.5 MPa, while the MFCJ32 jumps to 402.2 N. This 25 mm bore strikes a middle ground at 245.3 N, making it ideal when the smaller body lacks authority but the 32 mm is physically too large. The 100 mm adjustable window is perfect for high-speed changeovers where the exact extend endpoint and end-of-stroke shock both require field tuning.
Remember that the variable air cushion only decelerates the piston near the stroke end; it is not a brake. If the machine loses air, the piston drifts, so install an external rod lock or pilot-operated check valve for suspended loads. Mounting options include LB foot, FA flange, and TC trunnion (no SDB). Because this specific SKU lacks a magnet, it cannot host reed or solid-state 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 MFCJ25X250-100 FAQ
This 25 mm bore cylinder features a 1/8" air port and a 10 mm male rod thread (M10x1.25). 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.
No, this specific SKU does not include a magnet, so it cannot accept CMSG, DMSG, or EMSG switches. You must select the -S magnet variant for position sensing capabilities.
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.
Related AirTAC MFCJ Cylinders
Request a Quote for Airtac MFCJ Adjustable Mini Cylinder MFCJ25X250-100
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.