Airtac MSF Single Acting Mini Cylinder MSF20X150U
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF20X150U is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø20mm bore and 150mm 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
- Stroke150 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 MSF20X150U
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 MSF20X150U is a single-acting, push-type actuator where compressed air extends the 8 mm rod and an internal spring retracts it. Because the spring constantly pulls back, the quoted forces are already net of that resistance, and the rod cannot be loaded in the return direction. This 150 mm stroke unit features a U flat-end rear cover and a 1/8" port.
You only need to plumb one air line to extend the rod, which simplifies valve requirements and ensures the cylinder fails to the retracted position on air loss. For its size, the riveted construction is shorter than an ISO 6432 cylinder for the same bore and stroke, saving valuable mounting length while the stainless barrel resists mild washdown environments. Based on the 0.5 MPa rating, a safe working load is roughly 71 N, meaning it can vertically lift or clamp about 6 kg with a 2:1 safety margin. Note that this SKU lacks a magnet, so it cannot host CMSG, DMSG, or EMSG sensors without switching to an -S variant.
Airtac MSF Single Acting Mini Cylinder MSF20X150U Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF20X150U |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 150 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 MSF20X150U
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 20 | Bore size in mm. |
| ×150 | 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 MSF20X150U Is Used
Long-Stroke Part Ejection
Uses the full 150 mm stroke to push finished parts clear of a machine bed, relying on the spring to safely retract the 8 mm rod when air is removed.
Fail-Safe Clamping
Applies up to 117.5 N of clamping pressure at 0.5 MPa, automatically releasing the part back to the retracted position during an air loss event.
Light-Duty Gating
Actuates lightweight diverter gates on a packaging line, where the 6 kg vertical lift capacity is sufficient to move the mechanism without overload.
Is the Airtac MSF Single Acting Mini Cylinder MSF20X150U the Right Cylinder?
When sizing this 20 mm bore actuator, compare it directly against the MSF25, which steps up to 192.8 N of push force at 0.5 MPa if your clamp or ejector needs more authority. As the smallest bore in the MSF range, there is no smaller option, so if 117.5 N is excessive for your fixture, consider adding a flow control to limit the extend speed rather than dropping bore size. The internal spring dictates a strict 0.2 MPa operating pressure floor; below that, the spring wins and the rod will not extend properly. This model carries a U flat-end back cover and supports LB foot, FA flange, SDB pivot, and TC trunnion mounts. Because this specific SKU is not magnetised, position sensing is impossible here—order an -S version if your cycle requires 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 MSF20X150U FAQ
This single-acting cylinder generates a net push force of 117.5 N at 0.5 MPa and 181.3 N at 0.7 MPa. It requires a minimum operating pressure of 0.2 MPa to overcome the internal return spring, with a maximum pressure of 1.0 MPa and a proof pressure of 1.5 MPa.
No, this specific SKU does not include a magnet, so it cannot accept CMSG, DMSG, or EMSG switches. You must specify an -S variant to enable sensing. Additionally, the spring only returns the rod to its rest position on air loss; it will not hold a mid-stroke load.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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