
The AirTAC Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X25CM is a genuine double acting + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 25mm 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.
Damping high-speed end-of-stroke impacts is the core strength of this double-acting mini cylinder, achieved via a needle-adjustable variable air cushion at both ends. The MFC20X25CM features a JIS-standard round-body construction with a SUS304 stainless barrel and riveted aluminium covers, yielding a unit notably shorter than an ISO 6432 cylinder for the same 20 mm bore and 25 mm stroke. A CM round-end back cover equips this specific model.
Operating at 30-800 mm/s on a 1/8" port with an 8 mm rod, it generates 157 N of push force at 0.5 MPa. This translates to a safe working load of about 94 N, or roughly 8 kg of vertical lift with a 2:1 margin. Note that this SKU lacks a magnet, meaning it cannot host CMSG, DMSG or EMG sensors; the -S variant is required for position detection.
| Model | Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X25CM |
|---|---|
| Series | MFC JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 25 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.
| 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.
| MFC | JIS-standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×25 | 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.
Shoots small parts out of a machining center at speed, relying on the adjustable air cushion to silently absorb the 25 mm stroke end impact without damaging the workpiece.
Pushes lightweight cartons on a packing line where the 157 N push force is plenty, while the cushioned stroke prevents banging against hard stops.
Holds delicate plastic or aluminum components during a secondary trimming operation, using the SUS304 body to resist occasional coolant washdown.
When sizing this 20 mm bore, step down if loads are light or step up to the MFC25 which provides 245.3 N of push force at 0.5 MPa. The variable air cushion is essential for this 25 mm stroke when cycling at high speeds, as it decelerates the piston to protect the load. Remember the cushion only eases the stop and does not brake or lock the rod.
Because this plain cylinder will drift and drop its load if air pressure is lost or the valve is centered, apply 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
This 20 mm bore cylinder uses a 1/8" port and an 8 mm rod. It delivers 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 force of 32 kgf at 1.0 MPa.
No, this specific SKU does not include a piston magnet so it cannot accept CMSG, DMSG or EMSG switches. You must order the -S variant to enable magnetic sensing. The variable air cushion at both ends functions solely to decelerate the piston, not to hold the load.
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