Airtac MSF Single Acting Mini Cylinder MSF20X70SCA
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF20X70SCA is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø20mm bore and 70mm 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
- Stroke70 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 MSF20X70SCA
Generating 117.5 N of push force at 0.5 MPa, this AirTAC 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, simplifying valve requirements. The quoted force is already net of the spring, and the 8 mm rod features an M8x1.25 male thread. A built-in magnet (-S) enables position tracking with CMSG, DMSG, or EMSG switches.
Built with a SUS304 stainless steel barrel and riveted aluminium covers, the JIS-standard round body is notably shorter than an ISO 6432 cylinder of the same 20 mm bore and 70 mm stroke. The CA rear pivot cover allows direct pin mounting. For a practical guideline, the safe working load is roughly 71 N, or about 6 kg of vertical lift with a 2:1 margin. Fixed TPU bumper pads absorb end-of-stroke impacts across the 50-800 mm/s speed range.
Airtac MSF Single Acting Mini Cylinder MSF20X70SCA Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF20X70SCA |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 70 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 MSF20X70SCA
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 20 | Bore size in mm. |
| ×70 | 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 MSF20X70SCA Is Used
Light-Duty Clamping
Supplies 117.5 N of push force at 0.5 MPa to hold light components securely during machining, releasing automatically via spring return.
Part Ejection
Uses the 70 mm stroke to push finished parts off a conveyor line, relying on the internal spring to retract the 8 mm rod when air is removed.
Pivoting Gate Actuation
Leverages the CA rear pivot cover to swing a diverter gate, safely returning to the closed retracted position if the air supply drops.
Is the Airtac MSF Single Acting Mini Cylinder MSF20X70SCA 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; as the smallest bore in the MSF family, there is no smaller standard option. Remember that a minimum operating pressure of 0.2 MPa is required to overcome the return spring. This 20 mm bore configuration pairs the -S magnet for sensors with the CA rear pivot, making it ideal for pivoting clamp or eject mechanisms that must fail safely to the retracted position on air loss.
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 MSF20X70SCA FAQ
It delivers 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 0.2-1.0 MPa; a minimum of 0.2 MPa is required to overcome the internal return spring.
No, the spring constantly drives the rod to the retracted position, so it cannot hold a mid-stroke load. For mid-stroke holding, use a double-acting MF cylinder with an external rod lock. The -S magnet allows CMSG/DMSG/EMSG sensors to detect end positions.
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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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