Airtac MSF Single Acting Mini Cylinder MSF20X100SU
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF20X100SU is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø20mm bore and 100mm 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
- Stroke100 mm
- Port size1/8"
- Acting typeSingle acting, push (spring return)
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MSF Single Acting Mini Cylinder MSF20X100SU
Delivering 117.5 N of push force at 0.5 MPa (181.3 N at 0.7 MPa), this JIS-standard round-body mini cylinder uses a SUS304 stainless barrel and riveted aluminium covers. The MSF20X100SU is a single-acting push type: compressed air entering the 1/8" port extends the Ø8 mm rod, while an internal spring retracts it. Because the spring constantly pulls back, the quoted force is already net of that resistance, and the rod cannot be loaded on the return stroke.
For this 20 mm bore, a practical safe working load is roughly 71 N, or vertically lifting about 6 kg with a 2:1 safety margin. The 100 mm stroke is governed by fixed TPU bumper pads rather than an adjustable cushion. Thanks to the riveted construction, the overall body is shorter than an ISO 6432 cylinder of the same bore and stroke, saving valuable mounting length. The -S suffix indicates a built-in piston magnet for position sensing, and the U suffix denotes a flat-end rear cover.
Airtac MSF Single Acting Mini Cylinder MSF20X100SU Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF20X100SU |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 100 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 MSF20X100SU
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 20 | Bore size in mm. |
| ×100 | 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 MSF20X100SU Is Used
Light-Duty Clamping
Extends to clamp small components with 117.5 N of push force, using the internal spring to automatically release the part if air pressure drops.
Package Ejection
Pushes lightweight goods off a belt over a 100 mm stroke, relying on the fail-safe retracted rest position to clear the conveyor path.
Vertical Lifting
Raises items up to 6 kg against gravity, with the single-acting design requiring only one 1/8" air line to operate the extend motion.
Is the Airtac MSF Single Acting Mini Cylinder MSF20X100SU the Right Cylinder?
When sizing this unit, evaluate both directions: if 117.5 N at 0.5 MPa is insufficient, step up to the MSF25 which provides 192.8 N; as this is the smallest available bore in the series, there is no smaller MSF option. It fits applications needing a spring-return clamp or ejector that safely retracts on air loss. Ensure your supply meets the 0.2 MPa minimum floor required to overcome the return spring. Mounting options include LB foot, FA flange, SDB pivot, and TC trunnion brackets, and the integrated magnet (-S) supports CMSG, DMSG, or EMSG switches.
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 MSF20X100SU FAQ
It provides a net push force of 117.5 N at 0.5 MPa and 181.3 N at 0.7 MPa. The operating pressure range is 0.2 to 1.0 MPa; a minimum of 0.2 MPa is required to overcome the internal return spring, and it uses a 1/8" port.
No, on air loss the spring drives the rod to the retracted position, so it cannot hold an arbitrary mid-stroke load. For mid-stroke holding you need a double-acting MF with an external rod lock. The -S magnet allows CMSG/DMSG/EMSG sensors to track end positions.
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