Drive Shaft & Bearings for Centrifugal Wheels

Product Specifications

Technical details and manufacturing context for Drive Shaft & Bearings

Definition

The drive shaft and bearings are critical components within a centrifugal wheel assembly, responsible for transferring torque from the prime mover to the rotating wheel. The bearings provide precise rotational support, minimize friction, and maintain alignment under operational loads, ensuring smooth and efficient power transmission. This assembly is designed for machinery and equipment manufacturing applications where reliable power transmission is essential. The drive shaft is typically made from alloy steel grades such as 40Cr, 42CrMo, or 45# per GB/T 3077, offering high strength and durability. Bearings are deep groove ball bearings (e.g., 6205–6220, 6305–6320) per ISO 15, with precision classes P0 to P6 per ISO 492. Key parameters include shaft diameter (20–100 mm per ISO 286), shaft length (200–2000 mm), rated torque (50–5000 N·m per ISO 1940), and maximum speed (3000–15000 rpm per ISO 1940). Radial load capacity ranges from 10 to 100 kN, and axial load capacity from 5 to 50 kN, both per ISO 76. Shaft straightness is specified as 0.02–0.05 mm/m per ISO 1101, and surface roughness as Ra 0.4–1.6 µm per ISO 1302. Operating temperature range is -20 to 120 °C per ISO 492, with lubrication options of grease or oil per ISO 281. Weight varies from 5 to 200 kg depending on size and material. These values are reference ranges; actual model-specific values must be verified with the legal manufacturer or supplier. The assembly is designed to operate within these parameters, and exceeding rated torque may cause shaft failure. Proper selection of shaft diameter, bearing type, and precision class is critical for performance. Verification of standards and compliance should be conducted with the manufacturer.

Working Principle

The drive shaft receives rotational force from a motor or engine. This torque is transmitted along its length to the attached centrifugal wheel. The bearings (typically ball or roller bearings) support the shaft, allowing it to rotate freely with minimal resistance by using rolling elements between inner and outer races. This setup converts input power into the rotational motion of the wheel. The bearings also handle radial and axial loads, maintaining alignment and reducing friction. Proper lubrication and precision class are essential for smooth operation and longevity.

Common Materials

Alloy Steel, Bearing Steel (e.g., SAE 52100), Case-Hardened Steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Shaft Diameter	20–100 mm	Select based on torque and bearing bore.ISO 286
Shaft Length	200–2000 mm	Custom lengths available.
Rated Torque	50–5000 N·m	Exceeding rated torque may cause shaft failure.ISO 1940
Max Speed	3000–15000 rpm	Balance grade G2.5 or better.ISO 1940
Radial Load Capacity	10–100 kN	Static load rating of bearings.ISO 76
Axial Load Capacity	5–50 kN	Thrust load capability.ISO 76
Shaft Material	40Cr, 42CrMo, 45#	Alloy steel for high strength.GB/T 3077
Bearing Type	6205–6220, 6305–6320	Deep groove ball bearings.ISO 15
Bearing Precision Class	P0–P6	P6 for higher speed applications.ISO 492
Shaft Straightness	0.02–0.05 mm/m	Critical for vibration.ISO 1101
Surface Roughness	Ra 0.4–1.6 µm	Smoother finish for seal areas.ISO 1302
Operating Temperature	-20–120 °C	Higher temps require special grease.ISO 492
Lubrication	Grease, Oil	Grease for low maintenance.ISO 281
Weight	5–200 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.

Components / BOM

Shaft Part
Transmits torque from the power source to the centrifugal wheel.

Material: Alloy Steel
Bearing Inner Race Part
Fits onto the shaft and provides a smooth surface for the rolling elements.

Material: Bearing Steel
Bearing Outer Race Part
Fits into the housing, providing the outer track for the rolling elements.

Material: Bearing Steel
Rolling Elements (Balls/Rollers) Part
Reduce friction by rolling between the inner and outer races.

Material: Bearing Steel
Bearing Cage/Retainer Part
Spaces and retains the rolling elements.

Material: Steel or Polymer

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Centrifugal Wheel Assembly

View system integration details

Head Section

View system integration details

Manufacturers of Drive Shaft & Bearings

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Frequently Asked Questions

What materials are used for the drive shaft?

The drive shaft is typically made from alloy steel grades such as 40Cr, 42CrMo, or 45# per GB/T 3077. These materials provide high strength and durability for power transmission applications.

What bearing types are available?

Deep groove ball bearings are used, with sizes ranging from 6205–6220 and 6305–6320 per ISO 15. Precision classes from P0 to P6 per ISO 492 are available, with P6 recommended for higher speed applications.

What is the maximum operating speed?

The maximum speed range is 3000–15000 rpm per ISO 1940. The balance grade should be G2.5 or better. Actual speed limits depend on the specific model and application, so verify with the manufacturer.

How do I select the right shaft diameter?

Shaft diameter ranges from 20 to 100 mm per ISO 286. Selection should be based on the required torque and the bearing bore size. Consult the manufacturer for model-specific recommendations.

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pressure:	Up to 10 bar (145 psi)
other spec:	Max rotational speed: 5000 RPM, Max torque: 1000 Nm, Max axial load: 5 kN, Max radial load: 10 kN
temperature:	-40°C to 120°C

Drive Shaft & Bearings

Product Specifications

Applied To / Applications

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Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

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