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Tooth Ring Component – Rubber and Plastic Product Manufacturing

Component Specifications

Definition

A tooth ring is a critical annular gear component manufactured through polypropylene injection molding processes, designed to transmit torque and rotational motion within gear assemblies. It features precisely engineered teeth profiles that mesh with mating gears to achieve specific speed ratios and power transmission requirements in mechanical systems.

Working Principle

Operates on gear meshing principles where the tooth ring's precisely molded teeth engage with corresponding teeth on mating gears to transfer rotational motion and torque. The polypropylene material provides self-lubricating properties, reducing friction and wear during operation while maintaining dimensional stability under load.

Materials

Polypropylene (PP) homopolymer or copolymer, typically with 20-40% glass fiber reinforcement for enhanced mechanical properties. Material specifications include: PP-GF30 (30% glass fiber), density: 1.12-1.23 g/cm³, melt flow index: 10-30 g/10min (230°C/2.16kg), tensile strength: 60-100 MPa, flexural modulus: 3000-5000 MPa.

Technical Parameters

Module 0.5-2.0 mm
Backlash 0.05-0.15 mm
Face Width 5-25 mm
Maximum RPM 1500-3000
Tooth Profile Involute
Inner Diameter 20-180 mm
Outer Diameter 30-200 mm
Pressure Angle 20°
Surface Finish Ra 1.6-3.2 μm
Number of Teeth 24-120
Operating Temperature -20°C to 100°C

Standards

ISO 1328-1:2013, ISO 6336-1:2019, DIN 3960, DIN 3961, DIN 3962

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Tooth Ring.

Parent Products

This component is used in the following industrial products

Polypropylene Injection Molded Gear Wheel

Precision plastic gear component manufactured via injection molding for mechanical power transmission.

View Product Details

Engineering Analysis

Risks & Mitigation

Tooth wear under excessive load
Thermal deformation at high temperatures
Chemical degradation from certain solvents
Fatigue failure from cyclic loading
Dimensional instability from moisture absorption

FMEA Triads

Trigger: Excessive torque or shock loading
Failure: Tooth fracture or deformation
Mitigation: Implement torque limiters, use glass-reinforced PP grades, design with adequate safety factors

Trigger: Improper gear meshing alignment
Failure: Accelerated wear and noise generation
Mitigation: Precision mounting fixtures, alignment verification during assembly, use of alignment pins

Trigger: Exposure to incompatible chemicals
Failure: Material degradation and loss of mechanical properties
Mitigation: Material compatibility testing, protective coatings, environmental controls

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

ISO IT7-IT9 for critical dimensions, ±0.05mm for tooth profile, ±0.1mm for diameters

Test Method

Coordinate measuring machine (CMM) inspection, gear profile testing per ISO 1328, material testing per ISO 527 and ISO 178, dimensional verification with optical comparators

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation

4/5

Manufacturing capability

4/5

Inspection readiness

5/5

Supplier transparency

3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What are the advantages of polypropylene tooth rings over metal gears?

Polypropylene tooth rings offer self-lubrication, corrosion resistance, noise reduction, lighter weight, and lower manufacturing costs compared to metal gears, making them ideal for moderate-load applications.

What maintenance is required for polypropylene tooth rings?

Minimal maintenance is required due to polypropylene's self-lubricating properties. Periodic inspection for wear, cleaning to remove debris, and ensuring proper alignment with mating gears are recommended.

Can polypropylene tooth rings be used in high-temperature applications?

Standard polypropylene tooth rings are suitable for temperatures up to 100°C. For higher temperatures (up to 150°C), heat-stabilized or glass-reinforced grades should be used.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

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.

Tooth Ring