Vacuum Pump/Motor
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This page explains how Shaft Assembly is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.
A rotating mechanical component that transmits torque and supports rotating elements within a vacuum pump/motor system.
Technical details and manufacturing context for Shaft Assembly
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Shaft Diameter | 20–80 mm | Standard sizes for pump/motor shaftsISO 286 |
| Shaft Length | 100–500 mm | Custom lengths available |
| Torque Capacity | 50–500 N·m | Depends on material and diameter |
| Rotational Speed | 3000–6000 rpm | Max speed limited by balance |
| Tolerance Grade | IT6–IT8 | Precision for bearing fitISO 286 |
| Surface Roughness | Ra 0.4–1.6 µm | Critical for seal surfacesISO 1302 |
| Operating Temperature | -20–120 °C | Above 120°C requires special materials |
| Material Grade | 40Cr–42CrMo | Alloy steel for strengthGB/T 3077 |
| Hardness | HRC 28–45 | For wear resistanceISO 6508 |
| Weight | 5–50 kg | Depends on size and material |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is essential for the following industrial systems and equipment:
| pressure: | Up to 10 bar (absolute) in vacuum service |
| other spec: | Max rotational speed: 15,000 RPM, Torque capacity: 50 Nm, Vacuum level: 10^-3 mbar |
| temperature: | -40°C to 200°C |
Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.
Quoted from the published standard.
3 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.
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A practical evidence checklist for RFQ preparation and supplier evaluation.
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The shaft assembly is typically made from stainless steel or alloy steel. For alloy steel, material grades such as 40Cr to 42CrMo are referenced in GB/T 3077. The specific material grade depends on the application and must be confirmed with the manufacturer.
The shaft diameter ranges from 20 to 80 mm, and the length from 100 to 500 mm, with custom lengths available. These are reference ranges; the exact dimensions must be verified for the specific pump/motor model.
The rotational speed is limited to 3000–6000 rpm, depending on the balance of the assembly. The actual maximum speed for a given shaft must be confirmed with the manufacturer based on the application.
Tolerance grades follow ISO 286, typically IT6–IT8 for bearing fits. Surface roughness on seal surfaces is Ra 0.4–1.6 µm per ISO 1302. These specifications are critical for proper bearing and seal performance and must be verified for the specific product.
Editorial classification, named public sources where available, and source-reviewed manufacturer records.
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