INDUSTRY COMPONENT

Tooth Flank

The tooth flank is the functional surface of a rack tooth that engages with a pinion to transmit motion and power in linear drive systems.

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Component Specifications

Definition
In rack-and-pinion systems, the tooth flank refers to the precisely machined side surfaces of the rack teeth that make contact with the pinion teeth. These surfaces are designed with specific geometric profiles (typically involute or cycloidal) to ensure smooth, efficient power transmission with minimal backlash and wear. The tooth flank's accuracy directly affects the system's precision, noise levels, and longevity.
Working Principle
The tooth flank operates on the principle of conjugate action, where the precisely shaped surfaces of rack and pinion teeth maintain continuous contact during engagement. As the pinion rotates, its teeth roll along the rack's tooth flanks, converting rotational motion into linear motion (or vice versa). The flank geometry ensures proper meshing, load distribution, and minimal sliding friction.
Materials
Typically made from hardened steel alloys (e.g., AISI 4140, 4340, or case-hardened steels), stainless steel, or sometimes engineered plastics for specific applications. Surface hardness ranges from 45-60 HRC for steel components.
Technical Parameters
  • Module 1-10 mm
  • Hardness 45-60 HRC
  • Tooth Profile Involute
  • Accuracy Grade DIN 5-8 or AGMA 10-13
  • Pressure Angle 14.5°, 20°, or 25°
  • Surface Finish Ra 0.8-3.2 μm
Standards
ISO 53, ISO 54, DIN 867, AGMA 2015

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Tooth Flank.

tooth flank rack tooth surface gear flank rack-and-pinion power transmission linear drive involute profile gear manufacturing Tooth Flank in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Rack

A linear gear component with teeth cut along its length that meshes with a pinion gear to convert rotational motion into linear motion.

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Engineering Analysis

Risks & Mitigation
  • Premature wear due to improper lubrication
  • Pitting and spalling from excessive loads
  • Noise generation from profile errors
  • Reduced precision from flank deviations
FMEA Triads
Trigger: Inadequate surface hardness
Failure: Accelerated wear and pitting
Mitigation: Implement proper heat treatment processes and hardness testing
Trigger: Geometric profile errors
Failure: Increased noise, vibration, and reduced efficiency
Mitigation: Use precision grinding/hobbing and implement regular quality control
Trigger: Contamination in lubrication
Failure: Abrasive wear on flank surfaces
Mitigation: Implement proper filtration systems and regular maintenance schedules

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Profile tolerance: ±0.005-0.02 mm, Lead tolerance: ±0.01-0.03 mm/100mm
Test Method
Coordinate measuring machines (CMM), gear measuring instruments, surface roughness testers, hardness testers

Buyer Feedback

★★★★☆ 4.8 / 5.0 (9 reviews)

"Testing the Tooth Flank now; the technical reliability results are within 1% of the laboratory datasheet."

"Impressive build quality. Especially the technical reliability is very stable during long-term operation."

"As a professional in the Machinery and Equipment Manufacturing sector, I confirm this Tooth Flank meets all ISO standards."

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Frequently Asked Questions

What is the difference between tooth flank and tooth face?

The tooth flank refers to the side surfaces of the tooth that engage with mating gear teeth, while the tooth face typically refers to the top surface. The flank is the functional contact surface for power transmission.

Why is tooth flank geometry important?

Proper flank geometry ensures efficient power transmission, minimizes noise and vibration, reduces wear, and maintains precision in motion control systems.

How is tooth flank quality measured?

Flank quality is measured through profile deviation, lead deviation, surface roughness testing, and hardness testing according to ISO/DIN standards.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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Tooling/Fixture Plate Tooth Holders