Airtac MSF Single Acting Mini Cylinder MSF20X15SU
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF20X15SU is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø20mm bore and 15mm 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
- Stroke15 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 MSF20X15SU
Generating 117.5 N of push force at 0.5 MPa, this single-acting cylinder uses compressed air to extend the rod and an internal spring to retract it. Because you only plumb a single 1/8" port, valve complexity drops, and the rod fails to the retracted position on air loss. The 15 mm stroke keeps the envelope tight for short ejection or clamping tasks.
Built as a JIS-standard round-body mini, the SUS304 stainless barrel and riveted aluminium covers yield a shorter mounting length than an ISO 6432 unit of identical bore and stroke. The quoted force is already net of the return spring, which requires a 0.2 MPa floor to overcome. For sizing, a safe working load is roughly 71 N, letting it clamp about 6 kg vertically with a 2:1 margin.
Airtac MSF Single Acting Mini Cylinder MSF20X15SU Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF20X15SU |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 15 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 MSF20X15SU
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 20 | Bore size in mm. |
| ×15 | 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 MSF20X15SU Is Used
Short-Stroke Clamping
Exerts a safe 71 N working load to hold light aluminium or plastic components securely during a quick machining cycle.
Part Ejection
Extends 15 mm to push small finished parts off a conveyor belt, with the spring ensuring the ejector retracts on air loss.
Bin Gate Actuation
Opens and closes a lightweight hopper flap, using the 6 kg vertical lift capacity to shift the gate mass reliably.
Is the Airtac MSF Single Acting Mini Cylinder MSF20X15SU the Right Cylinder?
If 117.5 N at 0.5 MPa is insufficient, step up to the MSF25, which provides 192.8 N at the same pressure. This 20 mm bore is the smallest available, so no smaller MSF option exists. The single-acting spring-return design fits short clamping or ejection duties where air loss must safely retract the tooling. Ensure your supply stays at or above the 0.2 MPa floor so the spring does not win. Mounting options include LB foot, FA flange, SDB pivot, and TC trunnion, and this U flat-end rear cover variant pairs well with compact foot or flange setups. Because this SKU includes the -S magnet, you can track position with 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 MSF20X15SU FAQ
It delivers a net push force of 117.5 N at 0.5 MPa and 181.3 N at 0.7 MPa. Operating pressure ranges from 0.2 to 1.0 MPa, but you must supply at least 0.2 MPa to overcome the internal return spring.
No. The internal spring drives the rod to the retracted position on air loss; it cannot hold an arbitrary mid-stroke load. For mid-stroke holding, use a double-acting MF cylinder with an external rod lock. This -S variant supports CMSG, DMSG, and EMSG sensors.
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1-Year Warranty
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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