Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X25CM
The AirTAC Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X25CM is a genuine single acting, push (spring return) round-body mini air cylinder with a Ø20mm bore and 25mm 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
- Stroke25 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 MSI20X25CM
Delivering 119.5 N of push force at 0.5 MPa, this AirTAC MSI20X25CM is a single-acting, spring-return mini cylinder. Compressed air extends the rod while an internal spring handles the retraction, meaning it only needs one 1/8" air line to operate. Because the spring actively pulls the rod back, the cylinder defaults to a safe retracted rest position if air pressure drops. The listed force is already net of the spring resistance.
Built with a stainless-steel round barrel and piston rod, the riveted construction resists mild corrosion and washdown environments. It uses the ISO 6432 mounting interface for easy bracket interchangeability. For sizing purposes, the safe working load is roughly 72 N, which translates to clamping or vertically lifting about 6.1 kg with a 2:1 safety margin. This specific CM-cover SKU lacks a magnet, so it cannot accept CMSG, DMSG, or EMSG sensors.
Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X25CM Technical Specifications
| Model | Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X25CM |
|---|---|
| Series | MSI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 25 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 MSI20X25CM
| MSI | ISO 6432 round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 20 | Bore size in mm. |
| ×25 | 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 MSI20X25CM Is Used
Parts Ejection
Pushes finished parts out of a machining area with 119.5 N, relying on the spring to safely retract the pin when air is removed.
Flow Gating
Acts as a stopper pin on a conveyor line, extending to halt cartons and springing back to clear the path on air loss.
Light Clamping
Secures light workpieces during assembly, applying a safe working load of roughly 72 N without needing a second air line.
Is the Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X25CM the Right Cylinder?
When sizing by push force, this Ø20 bore generates 119.5 N at 0.5 MPa. If you need less force, the Ø16 bore provides 74.9 N; stepping up to the Ø25 bore yields 190.3 N. Remember that a minimum of 0.2 MPa is required just to overcome the return spring before any useful work is done. The 25 mm stroke is well within the 80 mm standard spring limit for this bore. Mounting options include LB foot, FA flange, SDB pivot-block, and TC trunnion. If position sensing is required, you must select the -S magnet variant, as this base SKU cannot accept a switch.
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 MSI20X25CM FAQ
It provides a push force of 119.5 N 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. Upon air loss, the spring forces the rod back to the fully retracted rest position.
No, this specific SKU does not have a magnet. You must order the -S variant to use CMSG, DMSG, or EMSG sensors. The cylinder features a stainless-steel round body, a 1/8" port, and fixed TPU bumper pads.
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Covers non-human-caused product damage.
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