Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X50CM
The AirTAC Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X50CM is a genuine single acting, push (spring return) round-body mini air cylinder with a Ø20mm bore and 50mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments. Its ISO 6432 mounting interface makes it a compact drop-in for standard mini-cylinder fixtures.
- BoreØ20 mm
- Stroke50 mm
- Port size1/8"
- Acting typeSingle acting, push (spring return)
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X50CM
Delivering 119.5 N of push force at 0.5 MPa, this stainless-steel round-body mini cylinder uses compressed air to extend the rod and an internal spring to retract it. Because it is a single-acting push type, you only need one 1/8" air line, saving plumbing and ensuring the rod safely springs back to its retracted rest position if air pressure drops. The Ø20 mm bore conforms to the ISO 6432 mounting interface, dropping directly into standard mini brackets, while the CM round rear cover provides a clean back-end profile.
The riveted stainless barrel and Ø8 mm rod resist mild corrosion and washdown environments. It requires at least 0.2 MPa of input pressure to overcome the return spring before any extension occurs. For sizing, this bore yields a safe working load of roughly 72 N, meaning it can vertically lift or clamp about 6.1 kg with a 2:1 safety margin. This specific SKU lacks a magnet, so it cannot accept CMSG, DMSG, or EMSG sensors; order an -S variant if position detection is required.
Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X50CM Technical Specifications
| Model | Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X50CM |
|---|---|
| Series | MSI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 50 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 500 mm |
Specifications follow the official AirTAC MI/MIC (ISO 6432) datasheet. Barrel & rod: stainless steel (round-body, riveted construction). Thread options: PT (blank) / G.
Theoretical Output Force (Ø20mm)
| Pressure | Push force (spring return) |
|---|---|
| 0.5 MPa | 119.5 N |
| 0.7 MPa | 182.3 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 MSI Single Acting Stainless Steel Mini Cylinder MSI20X50CM
| MSI | ISO 6432 round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 20 | Bore size in mm. |
| ×50 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
MI-family variants: MI / MIC (double acting ±cushion), MSI / MTI (single acting push / pull), MID / MICD (double rod ±cushion), MIJ / MICJ (adjustable stroke ±cushion). Back covers CA / U / R / CM. Mounting LB / FA / SDB / TC.
Where the Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X50CM Is Used
Light-Duty Clamping
With a safe working load near 72 N, it securely clamps light workpieces during machining or assembly, automatically releasing them if the air supply is cut.
Parts Ejector
Uses its 119.5 N push stroke to knock small finished parts off a conveyor line, with the spring ensuring the ejector arm stays clear at rest.
Bin Gate Actuation
Ideal for opening small gravity-fed bin gates; the spring-return fail-safe automatically closes the gate to halt material flow upon air loss.
Is the Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X50CM the Right Cylinder?
When sizing by push force, this Ø20 mm bore provides 119.5 N at 0.5 MPa. If your load is lighter, step down to the Ø16 mm bore which provides 74.9 N; if you need more force, step up to the Ø25 mm bore offering 190.3 N. Remember that because a return spring constantly opposes the air, the cylinder will not move at all below 0.2 MPa.
The 50 mm stroke sits well within the 80 mm maximum standard travel limit for this bore size. Mounting options include LB foot, FA flange, SDB pivot-block, and TC trunnion. Since this base unit has no -S magnet, it cannot support magnetic sensing; choose the -S version if you need to track position.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G)
- ✓ Magnet (-S) for sensors?
- ✓ Back cover (CA/U/R/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/R/CM) & mount (LB/FA/SDB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X50CM FAQ
It generates 119.5 N of push force at 0.5 MPa and 182.3 N at 0.7 MPa. Because it is single-acting with a spring return, it requires a minimum of 0.2 MPa to overcome the internal spring and extend the rod. When air is released, the spring drives the rod back to its retracted rest position.
No, this specific SKU does not include a magnet, so it cannot accept CMSG, DMSG, or EMSG sensors. You would need the -S variant for position detection. It is a single-acting push cylinder, not double-acting, and features a stainless steel round-body build with a 1/8" port.
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