Airtac MF20-25 Stainless Steel Mini Cylinder MF20X120SCM
The AirTAC Airtac MF20-25 Stainless Steel Mini Cylinder MF20X120SCM is a genuine double acting JIS-standard round-body mini air cylinder with a Ø20mm bore and 120mm 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
- Stroke120 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
- 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 MF20-25 Stainless Steel Mini Cylinder MF20X120SCM
Generating 157 N of push force at 0.5 MPa, this double-acting AirTAC mini cylinder features a 20 mm bore and a 120 mm stroke. Its JIS-standard round-body construction pairs a SUS304 stainless steel barrel with riveted aluminium covers, making the overall length shorter than a comparable ISO 6432 unit to save valuable mounting space in tight fixtures. The internal piston relies on a two-way oil-retaining seal for long life, while fixed TPU pads soften stroke-end impacts.
Because the code includes an S, this unit has a built-in magnet for CMSG, DMSG, or EMSG position sensing. For practical sizing, plan for a safe working load of about 94 N, which means it can vertically lift roughly 8 kg with a 2:1 safety margin. The CM round-end back cover simplifies rear pivot mounting, and the 1/8 inch port matches the bore specification exactly.
Airtac MF20-25 Stainless Steel Mini Cylinder MF20X120SCM Technical Specifications
| Model | Airtac MF20-25 Stainless Steel Mini Cylinder MF20X120SCM |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 120 mm |
| Acting type | Double acting |
| 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 | Fixed TPU bumper pads |
| 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 MF20-25 Stainless Steel Mini Cylinder MF20X120SCM
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×120 | 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 MF20-25 Stainless Steel Mini Cylinder MF20X120SCM Is Used
Small Part Ejection
Pushes lightweight plastic moulded components out of an injection press with 157 N of force at 0.5 MPa, using the 120 mm stroke to clear the tooling entirely.
Package Diverting
Actuates a routing flap on a packaging line to sort small cardboard boxes, benefiting from the compact JIS body length to fit between conveyor rollers.
Electronic Assembly
Presses delicate connectors onto PCBs, relying on the DMSG sensor to confirm the exact 120 mm extension before the next cycle begins.
Is the Airtac MF20-25 Stainless Steel Mini Cylinder MF20X120SCM the Right Cylinder?
When sizing this 20 mm bore actuator, consider the adjacent MF25 model if your application requires more force, as the larger bore provides 245.3 N of push at 0.5 MPa. Since 20 mm is the smallest available MF bore, dropping down further is not an option. The fixed TPU bumper pads only decelerate the piston near the stroke end and do not function as a lock; if air pressure drops, the rod will drift, so add an external rod lock or pilot check valve for suspended loads.
The 120 mm stroke is well within the 500 mm standard limit, but at this extension you should carefully manage side loading to prevent rod bending. You can mount this unit using LB foot, FA flange, or TC trunnion hardware, and the male M8x1.25 rod thread provides a secure attachment point for your tooling.
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 MF20-25 Stainless Steel Mini Cylinder MF20X120SCM FAQ
At 0.5 MPa it provides 157 N push and 131.9 N pull. At 0.7 MPa it provides 219.8 N push and 184.7 N pull. The theoretical maximum force is 32 kgf at 1.0 MPa, and the air port size is 1/8 inch.
The CM designation indicates a round-end rear cover that allows for pivot mounting. At the stroke endpoints, fixed TPU bumper pads decelerate the piston to reduce impact, but they do not act as an adjustable air cushion or a locking mechanism to hold the load in place.
Authorized Export Seller
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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