Encoders
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This page explains how Shaft / Bearing 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 mechanical assembly consisting of a rotating shaft supported by one or more bearings, designed to transmit motion and position data within an encoder system.
Technical details and manufacturing context for Shaft / Bearing Assembly
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Shaft Diameter | 6–100 mm | Standard range for encoder shaftsISO 286 |
| Shaft Length | 20–500 mm | Custom lengths available |
| Bearing Bore Diameter | 3–100 mm | Matches shaft diameterISO 15 |
| Bearing Outer Diameter | 10–215 mm | Housing fitISO 15 |
| Radial Runout | 0.01–0.05 mm | Critical for encoder accuracyISO 1101 |
| Axial Play | 0.02–0.10 mm | Preload affects playISO 5753 |
| Max Speed | 3000–10000 rpm | Depends on bearing type |
| Operating Temperature | -40–85 °C | Extended range optionalIEC 60068-2-1 |
| IP Rating | IP54–IP65 | Higher for harsh environmentsIEC 60529 |
| Bearing Material | GCr15–G20CrMo | Steel grades for durabilityGB/T 18254 |
| Shaft Material | 45–40Cr | Alloy steel for strengthGB/T 699 |
| Weight | 0.5–20 kg | Depends on size |
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: | Atmospheric to 2 bar (sealed bearings), higher with pressurization |
| other spec: | Max rotational speed: 10,000 RPM (depends on bearing type/size), radial load capacity: 50-5000 N, axial load capacity: 20-2000 N |
| temperature: | -40°C to +120°C (standard), up to +150°C with special seals/lubricants |
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.
Manufacturer profiles associated with Shaft / Bearing Assembly.
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A practical evidence checklist for RFQ preparation and supplier evaluation.
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According to the reference data, the shaft diameter typically ranges from 6 to 100 mm, with tolerances per ISO 286. However, the exact diameter depends on the specific encoder model and application. Always confirm the required shaft diameter with the encoder manufacturer or supplier.
Common shaft materials include hardened steel, stainless steel, and alloy steels such as 45 or 40Cr (per GB/T 699). Bearing materials include bearing steel (GCr15 to G20CrMo per GB/T 18254) and sometimes ceramic for specialized bearings. The choice depends on load, speed, and environmental conditions.
Radial runout is the deviation of the shaft's rotation from a true circle. Excessive runout can cause the encoder's sensing elements to misread position, to measurement errors. The reference range for radial runout is 0.01–0.05 mm per ISO 1101. Lower runout is critical for high-precision applications.
The reference maximum speed range is 3000–10000 rpm, depending on bearing type and assembly design. The actual maximum speed must be verified with the manufacturer, as it depends on factors such as bearing preload, lubrication, and shaft balance.
Editorial classification, named public sources where available, and source-reviewed manufacturer records.
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