Airtac MFCJ Adjustable Mini Cylinder MFCJ25X50-50S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X50-50S 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 MFCJ25X50-50S
Dial in exact extend lengths and tame high-speed shock with the AirTAC MFCJ25X50-50S, a JIS-standard round-body mini cylinder built from a SUS304 stainless barrel and riveted aluminium covers. This double-acting actuator features a 50 mm adjustable stroke window alongside a needle-set variable air cushion at both ends, giving you on-site control over both the end position and the deceleration ramp. It carries a built-in piston magnet (-S) for position sensing.
Delivering 245.3 N of push force at 0.5 MPa, it provides a safe working load of about 147 N and lifts roughly 12.5 kg vertically with a 2:1 margin. The 1/8" port and M10x1.25 male rod thread keep the pneumatic and mechanical hookups compact. Because the MF body is shorter than an ISO 6432 cylinder for the same bore and stroke, it saves valuable mounting length without conforming to that standard.
Airtac MFCJ Adjustable Mini Cylinder MFCJ25X50-50S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ25X50-50S |
|---|---|
| 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 MFCJ25X50-50S
| 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 MFCJ25X50-50S Is Used
Adjustable Press Fit
Dial the extend stroke down from the 50 mm maximum to press delicate bearings, using the variable air cushion to prevent impact shock at the 245.3 N force level.
High-Speed Diverter
Fine-tune the actuation length on a packaging line diverter, relying on the needle cushions to absorb high-speed kinetic energy during rapid changeovers.
Vertical Lift Stop
Lift loads up to 12.5 kg with a 2:1 safety margin, adjusting the extend endpoint precisely to meet varying package heights on the fly.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ25X50-50S the Right Cylinder?
Choose between the available bores using real 0.5 MPa push figures: the MFCJ20 yields 157 N, this MFCJ25 hits 245.3 N, and the MFCJ32 jumps to 402.2 N. This 25 mm bore is the sweet spot when the MFCJ20 lacks thrust but the MFCJ32 is physically too large. The 50 mm adjustable window and twin variable air cushions excel in high-speed changeovers where end-of-stroke shock needs careful tuning.
Mount via LB foot, FA flange, or TC trunnion (no SDB or back-cover option exists on this build). The -S magnet supports CMSG, DMSG, and EMSG switches. Remember that the cushion only decelerates the piston near stroke end—it is not a lock. If your application must hold a load on air loss, install an external rod lock or pilot-operated 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 MFCJ25X50-50S FAQ
This 25 mm bore cylinder uses a 1/8" 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 pull is 288.5 N. The theoretical maximum force is 50 kgf at 1.0 MPa.
An external adjuster shortens the extend stroke by up to 50 mm on-site, while the variable air cushions at both ends decelerate the piston near the ends to absorb high-speed shock. The cushion is not a brake; the cylinder cannot hold a load on air loss, so use an external rod lock for position holding. The -S suffix means it has a magnet for CMSG, DMSG, or 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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