Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X155SU
The AirTAC Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X155SU is a genuine double acting + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 155mm 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.
- BoreØ20 mm
- Stroke155 mm
- Port size1/8"
- Acting typeDouble acting + cushion
- Rod threadM8×1.25
- 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 MFC Cushioned Stainless Steel Mini Cylinder MFC20X155SU
Delivering 157 N of push force at 0.5 MPa, the AirTAC MFC20X155SU is a JIS-standard round-body mini cylinder built for fast, shock-sensitive tasks. A variable air cushion at both ends lets you dial in the deceleration needle to absorb end-of-stroke impact, protecting your payload far better than a fixed bumper. The SUS304 stainless barrel and riveted aluminium covers resist mild corrosion and washdown, while the U flat-end rear cover simplifies direct mounting.
For the same 20 mm bore and 155 mm stroke, this riveted body is noticeably shorter than an ISO 6432 cylinder, saving valuable machine space. The -S suffix means a built-in piston magnet is present, allowing you to fit CMSG, DMSG or EMSG switches for position sensing. With a practical safe working load of roughly 94 N, it lifts about 8 kg vertically with a 2:1 safety margin.
Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X155SU Technical Specifications
| Model | Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X155SU |
|---|---|
| Series | MFC JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 155 mm |
| Acting type | Double acting + cushion |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X155SU
| MFC | JIS-standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×155 | 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 MFC Cushioned Stainless Steel Mini Cylinder MFC20X155SU Is Used
Light-Part Ejection
Shoots small plastic or aluminium parts out of a machining fixture at high speed, relying on the variable air cushion to stop the 8 mm rod softly without slamming.
Package Diverting
Pushes lightweight cardboard cartons across a belt at 800 mm/s; the adjustable needle prevents the stroke end from jarring the mechanism.
Compact Tray Sorting
Fits into tight transfer stations where overall length is critical, using the shorter-than-ISO-6432 body and U flat-end cover to save mounting space.
Is the Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X155SU the Right Cylinder?
If 157 N of push at 0.5 MPa is too much, no smaller MFC bore exists; you would need to regulate pressure down. If your payload grows, step up to the MFC25, which provides 245.3 N at 0.5 MPa. The adjustable air cushion is essential when cycling at high speeds or moving fragile items, as it softly decelerates the piston near the stroke ends.
This cylinder uses a 1/8" port and an M8x1.25 male rod thread. Because it lacks an internal locking mechanism, the piston will drift if air pressure drops or the valve is centered; use an external rod lock or pilot check valve to hold a load safely. The U back cover offers a flat rear face for flush mounting.
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 MFC Cushioned Stainless Steel Mini Cylinder MFC20X155SU FAQ
This 20 mm bore, 155 mm stroke double-acting cylinder pushes 157 N and pulls 131.9 N at 0.5 MPa. At 0.7 MPa it pushes 219.8 N and pulls 184.7 N, with a theoretical max of 32 kgf at 1.0 MPa. It uses a 1/8" air port and an M8x1.25 male rod thread.
Yes, the -S suffix indicates a built-in magnet for CMSG, DMSG or EMSG switches. However, the variable air cushion only decelerates the piston near the stroke end; it is not a brake. The cylinder will drift on air loss, so fit an external rod lock or pilot check valve to hold a load.
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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.
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Most inquiries answered within 7-8 hours.
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