Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X125SU
The AirTAC Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X125SU is a genuine double acting + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 125mm 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
- Stroke125 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 MFC20X125SU
Delivering 157 N of push force at 0.5 MPa, this double-acting mini cylinder is built around a JIS-standard round body with a SUS304 stainless barrel and riveted aluminium covers. Because the chassis uses a rolling-packed construction rather than a tie-rod or extruded profile, the overall length is noticeably shorter than an equivalent ISO 6432 unit for the same 20 mm bore and 125 mm stroke. The U-style flat rear cover keeps the back flush for direct mounting.
A built-in piston magnet (-S) enables position sensing with CMSG, DMSG or EMSG switches, while the variable air cushion at both ends lets you dial in a needle valve to absorb high-speed end-of-stroke shock. Derived from the 0.5 MPa push rating, the safe working load is roughly 94 N, meaning it lifts about 8 kg vertically with a 2:1 safety margin. The 1/8" port feeds the 8 mm rod, which carries an M8x1.25 male thread.
Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X125SU Technical Specifications
| Model | Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X125SU |
|---|---|
| Series | MFC JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 125 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 MFC20X125SU
| MFC | JIS-standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×125 | 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 MFC20X125SU Is Used
Small Package Diverting
Routes light parcels on a high-speed line using the 8 kg vertical lift capacity, relying on the needle-set air cushion to prevent harsh slams during rapid 125 mm strokes.
Electronic Component Testing
Applies a precise 94 N working load to delicate PCBs or connectors, using the -S magnet and DMSG switches to verify exact position without shock damage.
Blister Pack Sealing
Closes sealing jaws in a washdown-resistant SUS304 housing, where the U flat-end cover mounts directly against the machine frame to save space.
Is the Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X125SU the Right Cylinder?
If 157 N at 0.5 MPa is insufficient, step up to the MFC25, which provides 245.3 N of push force; there is no smaller bore in the MFC family. The adjustable air cushion is essential when driving the 125 mm stroke at high speeds or moving sensitive masses, as it replaces harsh bumper impacts with smooth deceleration. Note that this cushion only slows the piston near the end of travel and does not act as a brake or lock.
Because a standard double-acting cylinder will drift and lose its position if air pressure drops or the valve is centred, you must add an external rod lock or pilot-operated check valve for suspended loads. Mounting options include LB foot, FA flange, SDB pivot and TC trunnion brackets to suit your frame.
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 MFC20X125SU FAQ
This 20 mm bore cylinder has a 1/8" port and an 8 mm rod with an M8x1.25 thread. It generates 157 N push and 131.9 N pull at 0.5 MPa, 219.8 N push and 184.7 N pull at 0.7 MPa, with a theoretical maximum of 32 kgf at 1.0 MPa.
No, the piston will drift if air pressure drops or the valve is centred. The variable air cushion only decelerates the piston near the stroke end and does not function as a lock or brake. For suspended loads, install an external rod lock or pilot check valve. The -S magnet supports CMSG, DMSG and 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.
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Most inquiries answered within 7-8 hours.
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