PROFILE DEVELOPMENT / 10B21
10B21 gear
10B21 Gear: Gear-tooth sample record. This case presents a 10B21 gear-tooth cross-section. Tooth tip, tooth root, local fillets, and angular distribution shall be jointly verified as a complete contour.
Geometric Focus Points
Number of teeth, tooth tip and root profiles, angular distribution
Complete cross-sectional outline, local serrations, and dimensional datums
Confirm technical requirements based on the drawing
Cross-sectional features and review points
This case demonstrates a toothed cross-section of grade 10B21. Tooth tip, tooth root, local fillets, and angular distribution must be verified collectively as a complete profile.
Drawings and measurement requirements
Recommend providing identifiable tooth count, tooth geometry dimensions, center and angular datum; if meshing or mating is required, provide supporting design and acceptance criteria separately.
Delivery and subsequent processing
Toothed samples cannot directly verify load-carrying or meshing performance of any specific gear. Subsequent cutting, forming, or assembly conditions must be reviewed concurrently with development drawings.
Documentation basis and scope of confirmation
Data originates from this case’s catalog and internal sample photographs; catalog dimensions are nominal values, and photographs do not substitute formal inspection reports. Material standards, mechanical properties, heat treatment, supply conditions, and acceptance criteria must be confirmed per project.
Photo recording
Development Q&A
Can toothed shaped wire be accepted based solely on outer diameter?
Envelope dimensions are insufficient to define gear tooth geometry; tooth tip, tooth root, fillets, and angular distribution must also be verified—inspection items shall be defined per drawing.
Can the gear tooth profile shown in photographs verify meshing performance?
No. Photographs document cross-sectional geometry only; meshing, strength, or service suitability require supporting design and validation evidence.
Related cross-sectional cases
Material data and technical communication
Technical requirements must include cross-sectional drawing and revision, critical tolerances, subsequent processing steps, delivery form, and inspection requirements.
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