Sprocket Hub: Maximum Torque Capacity 50-5000 Nm

Component Specifications

Definition

A sprocket hub is a precision-engineered mechanical component designed to securely mount a sprocket onto a rotating shaft in power transmission systems. It serves as the interface between the sprocket teeth and the drive shaft, ensuring proper alignment, torque transmission, and load distribution. The hub typically features keyways, set screws, or clamping mechanisms to prevent rotational slippage and axial movement.

Working Principle

The sprocket hub operates on the principle of mechanical power transmission through positive engagement. It transfers rotational motion and torque from the drive shaft to the sprocket, which then engages with a chain to transmit power to other components. The hub maintains precise concentricity between the sprocket and shaft, ensuring efficient power transfer while minimizing vibration and wear.

Materials

Typically manufactured from medium carbon steel (AISI 1045, 4140), alloy steel, or stainless steel (304, 316) for corrosion resistance. Heat treatment (quenching and tempering) to achieve hardness of 28-32 HRC for standard applications, 40-45 HRC for heavy-duty applications.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Hub Length	20-150 mm
Balance Grade	G6.3 per ISO 1940
Bore Diameter	12-100 mm
Mounting Type	Set screw, clamping, keyed, or taper lock
Surface Finish	Ra 1.6-3.2 μm
Keyway Standards	ANSI B17.1, DIN 6885
Maximum Torque Capacity	50-5000 Nm

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 606, DIN 8187, ANSI B29.1, JIS B1801

Parent Products

This component is used in the following industrial products

Drive Sprocket

A toothed wheel that engages with the track links of a crawler undercarriage to transmit power and propel the vehicle.

View Product Details

Drive Sprockets

Toothed wheels that transmit power from the engine to the tracks in tracked vehicles.

View Product Details

Engineering Analysis

Risks & Mitigation

Improper installation leading to shaft damage
Material fatigue under cyclic loading
Corrosion in harsh environments
Misalignment causing premature chain wear
Insufficient torque transmission capacity

FMEA Triads

Trigger: Incorrect bore size or tolerance
Failure: Slippage on shaft, uneven load distribution
Mitigation: Precision machining to specified tolerances, proper measurement verification

Trigger: Material defects or improper heat treatment
Failure: Cracking, deformation under load
Mitigation: Material certification, hardness testing, quality control during manufacturing

Trigger: Improper installation or mounting
Failure: Eccentric rotation, vibration, premature failure
Mitigation: Proper installation procedures, use of alignment tools, torque specification adherence

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Bore diameter: H7/h6 fit per ISO 286, keyway: ±0.025 mm, concentricity: 0.05 mm TIR maximum

Test Method

Dimensional inspection per ISO 2768, hardness testing per ISO 6508, torque testing per ISO 16047, surface roughness measurement per ISO 4287

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Sprocket Hub

Manufacturer profiles associated with Sprocket Hub.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the difference between a sprocket hub and a sprocket?

A sprocket is the toothed wheel that engages with the chain, while the hub is the mounting component that connects the sprocket to the shaft. They may be manufactured as separate components or as an integrated unit.

How do I select the right sprocket hub for my application?

Consider shaft diameter, torque requirements, mounting method (keyed, clamping, or set screw), material compatibility with operating environment, and industry standards compliance. Always match the hub to both the sprocket specifications and shaft dimensions.

What maintenance is required for sprocket hubs?

Regular inspection for wear, proper lubrication of mounting surfaces, checking set screw tightness, and ensuring proper alignment. Replace hubs showing signs of deformation, excessive wear, or corrosion that compromises mounting integrity.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Sprocket Hub