Rim (Pulley) or Tooth Profile (Gear): Bore Size 10-100 mm

Component Specifications

Definition

The rim of a pulley is the outer cylindrical surface that contacts and drives a belt, cable, or chain via friction, designed to prevent slippage and ensure efficient power transfer. The tooth profile of a gear refers to the precise geometric shape of the teeth (e.g., involute, cycloidal) that meshes with another gear to transmit torque and motion through positive engagement, minimizing backlash and wear. Both are fundamental to converting and transmitting mechanical power in drive systems.

Working Principle

Pulley rim operates on friction principle: the rim's surface grips the belt, creating traction to transfer rotational force from the driver to the driven shaft. Gear tooth profile operates on positive engagement: teeth mesh precisely to transfer motion and torque between parallel, intersecting, or non-parallel shafts, with the profile geometry ensuring smooth engagement, constant velocity ratio, and load distribution.

Materials

Commonly carbon steel (e.g., AISI 1045, 4140), alloy steel, cast iron, aluminum alloys, or engineered polymers (e.g., nylon, acetal) for lightweight/low-load applications. Surface treatments include hardening (case hardening, induction hardening), plating (zinc, chrome), or coatings (polymer, rubber) to enhance wear resistance, corrosion protection, or friction properties.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Width	10-200 mm
Keyway	Standard (e.g., ANSI B17.1)
Diameter	50-1000 mm
Hardness	HRC 45-60 (for steel components)
Bore Size	10-100 mm
Tooth Module	1-10 mm (for gears)
Balance Grade	G6.3 (per ISO 1940)
Pressure Angle	20° (standard for gears)
Surface Finish	Ra 1.6-3.2 μm

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 5296, ISO 1328, DIN 780, DIN 3960, ANSI/AGMA 2000

Parent Products

This component is used in the following industrial products

Drive Pulley/Gear

A mechanical component that transmits rotational motion and torque from the motor to the main spindle assembly.

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Engineering Analysis

Risks & Mitigation

Wear and tear from friction/contact
Misalignment causing vibration/noise
Overloading leading to deformation/failure
Corrosion in harsh environments
Improper lubrication (gears) causing overheating

FMEA Triads

Trigger: Excessive load or shock loads
Failure: Tooth breakage (gear) or rim cracking (pulley)
Mitigation: Design with safety factors, use impact-resistant materials, implement load monitoring systems.

Trigger: Poor alignment during installation
Failure: Uneven wear, increased vibration, reduced efficiency
Mitigation: Use alignment tools, follow installation guidelines, conduct regular maintenance checks.

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

ISO 286 for fits, AGMA 2000 for gear accuracy (e.g., Grade 6-8)

Test Method

Dimensional inspection (CMM), hardness testing (Rockwell), surface roughness measurement, dynamic balancing (per ISO 1940), load testing

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

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Manufacturers of Rim (Pulley) or Tooth Profile (Gear)

Manufacturer profiles associated with Rim (Pulley) or Tooth Profile (Gear).

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Frequently Asked Questions

What is the difference between a pulley rim and a gear tooth profile?

A pulley rim uses friction to drive belts/chains, suitable for non-synchronous applications, while a gear tooth profile uses positive meshing for precise, synchronous power transmission with higher torque capacity.

How do I select the right material for a pulley rim or gear tooth?

Consider load, speed, environment, and cost: use steel for high strength/durability, aluminum for lightweight needs, or polymers for corrosion resistance/low noise. Surface treatments enhance performance.

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.

Rim (Pulley) or Tooth Profile (Gear)