Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X15R
The AirTAC Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X15R is a genuine single acting, push (spring return) round-body mini air cylinder with a Ø20mm bore and 15mm 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
- Stroke15 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 MSI20X15R
Delivering 119.5 N of push force at 0.5 MPa, this AirTAC stainless-steel round-body mini cylinder uses compressed air to extend the rod and an internal spring to retract it. Because it is single-acting, you only need one 1/8 inch air line, saving plumbing and air consumption. The spring ensures the rod safely returns to its retracted rest position if air pressure drops. This R-style rear cover features an axial port orientation for straightforward inline mounting.
Built to the ISO 6432 mounting interface, the Ø20 mm body drops into standard mini brackets and clevises. The stainless barrel and rod resist mild corrosion and washdown environments. For sizing, the 119.5 N output at 0.5 MPa translates to a safe working load of about 72 N, meaning it can vertically lift or clamp roughly 6.1 kg with a 2:1 safety margin. Note that this specific SKU lacks a magnet, so it cannot accept position sensors.
Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X15R Technical Specifications
| Model | Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X15R |
|---|---|
| Series | MSI ISO 6432 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 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 MSI20X15R
| MSI | ISO 6432 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. |
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 MSI20X15R Is Used
Light-Duty Clamping
Provides 119.5 N of push force to secure light workpieces during machining or assembly, with the spring ensuring the clamp retracts safely on air loss.
Package Ejector
Extends 15 mm to push small items off a conveyor line, using the single-acting design to save air and simplify valve requirements.
Pin Stopper Gate
Acts as a spring-return pin stop on a production track, extending to halt parts and automatically retracting when air is removed.
Is the Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X15R the Right Cylinder?
Choose this Ø20 bore when you need the 119.5 N push force at 0.5 MPa, stepping up from the Ø16 bore which provides 74.9 N. If your application requires more power, the next size up is the Ø25 bore delivering 190.3 N. Remember that the spring requires at least 0.2 MPa of air pressure to overcome before the rod will extend. The 15 mm stroke is well within the 80 mm standard spring limit for this bore.
This model uses the R back cover with an axial port. Because it has no -S suffix, it cannot host CMSG, DMSG, or EMSG sensors; if you need position feedback, select the magnet-equipped variant. Mounting options include LB foot, FA flange, SDB pivot-block, and TC trunnion.
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 MSI20X15R FAQ
It delivers 119.5 N of push force at 0.5 MPa and 182.3 N at 0.7 MPa. It requires a minimum of 0.2 MPa to overcome the internal spring and extend the rod; when air is released, the spring retracts the rod to its rest position.
No, this specific SKU does not have a magnet and cannot accept CMSG, DMSG, or EMSG sensors. You would need the -S variant for position sensing. It is a single-acting push cylinder with a stainless build, not a double-acting unit.
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