Airtac MSF Single Acting Mini Cylinder MSF20X20SU
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF20X20SU is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø20mm bore and 20mm 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
- Stroke20 mm
- Port size1/8"
- Acting typeSingle acting, push (spring return)
- 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 MSF Single Acting Mini Cylinder MSF20X20SU
Delivering 117.5 N of push force at 0.5 MPa, this AirTAC MSF20X20SU mini cylinder uses compressed air to extend the rod and an internal spring to retract it. Because it is single-acting, you only need to plumb one 1/8" port, which simplifies valve requirements and ensures the rod fails to the retracted position if air pressure drops. The SUS304 stainless round-body construction resists mild washdown environments while maintaining a shorter mounting envelope than an ISO 6432 cylinder of the same bore.
The quoted output is already net of the return spring, providing a safe working load of roughly 71 N or a vertical lift capacity of about 6 kg with a 2:1 margin. It features a flat-end U back cover, an 8 mm rod with an M8x1.25 male thread, and fixed TPU bumper pads for end-of-stroke deceleration across its 20 mm stroke. The included -S magnet enables position sensing with CMSG, DMSG, or EMSG switches.
Airtac MSF Single Acting Mini Cylinder MSF20X20SU Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF20X20SU |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 20 mm |
| Acting type | Single acting, push (spring return) |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.2 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 50 – 800 mm/s |
| Cushion | Fixed TPU bumper pads |
| Max standard stroke | Up to 150 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 (spring return) |
|---|---|
| 0.5 MPa | 117.5 N |
| 0.7 MPa | 181.3 N |
Single-acting push: air extends the rod; the return spring retracts it. Forces already net the spring; minimum working pressure is 0.2 MPa.
Model Code: Airtac MSF Single Acting Mini Cylinder MSF20X20SU
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 20 | Bore size in mm. |
| ×20 | 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 MSF Single Acting Mini Cylinder MSF20X20SU Is Used
Part Ejection
Pushes machined parts out of a fixture with 117.5 N of force, relying on the spring to safely pull the rod back clear of the workspace.
Gate Diversion
Actuates a short 20 mm diverter arm on a packaging line, returning to the resting position automatically when the air supply is cut.
Light Clamping
Holds lightweight components steady during assembly, providing a secure 6 kg vertical hold margin without needing a double-acting circuit.
Is the Airtac MSF Single Acting Mini Cylinder MSF20X20SU the Right Cylinder?
When sizing this 20 mm bore model, compare its 117.5 N @0.5 MPa output against the next size up: the MSF25 provides 192.8 N @0.5 MPa if your clamp or ejector needs more authority. As the smallest available MSF bore, there is no smaller variant to step down to. Ensure your supply stays at or above the 0.2 MPa floor, otherwise the internal spring will overpower the air and prevent extension. 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 0.2 – 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 MSF Single Acting Mini Cylinder MSF20X20SU FAQ
It generates 117.5 N of push force at 0.5 MPa and 181.3 N at 0.7 MPa. Because these figures are net of the internal spring, you must supply at least 0.2 MPa of air pressure to overcome the spring and extend the rod.
No, the spring constantly drives the rod to the retracted rest position on air loss, so it cannot act as a brake or hold an arbitrary mid-stroke load. For held positioning, use a double-acting MF cylinder with an external rod lock.
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.
Request a Quote for Airtac MSF Single Acting Mini Cylinder MSF20X20SU
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.