Airtac MFCJ Adjustable Mini Cylinder MFCJ25X550-100S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X550-100S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø25mm bore and 550mm 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
- Stroke550 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 MFCJ25X550-100S
Dial in the extend end by up to 100 mm on site with this double-acting JIS-standard round-body mini cylinder. The external adjuster shortens the forward stroke within a 450-550 mm window, while a needle-set variable air cushion at both ends soaks up high-speed shock. Because the 550 mm base length exceeds the 500 mm standard, this specific variant is a non-standard, made-to-order unit.
The SUS304 stainless steel barrel and riveted aluminium covers resist mild corrosion and washdown. It carries a 1/8" air port and a Ø10 mm piston rod with an M10x1.25 male thread. Generating 245.3 N of push force at 0.5 MPa, it yields a safe working load of about 147 N and lifts roughly 12.5 kg vertically with a 2:1 margin. The body is shorter than an ISO 6432 cylinder for the same bore and stroke, and the -S suffix means a built-in magnet enables CMSG, DMSG or EMSG switches.
Airtac MFCJ Adjustable Mini Cylinder MFCJ25X550-100S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ25X550-100S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 550 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 MFCJ25X550-100S
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×550 | 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 MFCJ25X550-100S Is Used
Long-Reach Part Pushing
Pushes lightweight components over a 550 mm span on an automated line, using the 100 mm adjuster to fine-tune the extend position for different fixture widths without changing mounts.
High-Speed Diverting
Diverts small cartons at high cycle rates where the variable air cushion absorbs end-of-stroke shock, preventing bounce while handling a safe working load near 147 N.
Vertical Lift Stations
Lifts approximately 12.5 kg loads vertically in a packaging cell, relying on the 245.3 N thrust at 0.5 MPa and the compact JIS body to save vertical mounting space.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ25X550-100S the Right Cylinder?
Size by force: the MFCJ20 delivers 157 N @0.5 MPa, this MFCJ25 provides 245.3 N, and the MFCJ32 steps up to 402.2 N. Choose this 25 mm bore when your changeover requires both a 100 mm stroke adjustment and smooth deceleration at high speed. Note that the air cushion only decelerates the piston near the end of travel; it is not a lock or brake.
If the load must be held during air loss or when a valve is centred, the piston will drift, so add an external rod lock or pilot-operated check valve. For mounting, select LB foot, FA flange or TC trunnion brackets (there is no SDB or back-cover option on this build). Confirm sensor compatibility with the installed -S magnet.
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 MFCJ25X550-100S FAQ
This 25 mm bore cylinder has a 1/8" air port. At 0.5 MPa it pushes with 245.3 N and pulls with 206.1 N. At 0.7 MPa the push is 343.4 N and the pull is 288.5 N. The theoretical maximum force is 50 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 100 mm (usable range 450-550 mm); retract remains full. Needle valves set the variable air cushion at both ends to decelerate the piston smoothly. It does not lock or hold the load on air loss, and the -S magnet allows CMSG/DMSG/EMSG sensors.
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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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