Hypoid Gears
![Hypoid bevel gearset1 (1) Hypoid Bevel Gearset](../static/picture/Hypoid-bevel-gearset1-1.jpg)
Hypoid Gear Set
Size Range and Capability for Hypoid Gears
Maximum Pitch Diameter – 30”
Diametral Pitch – 1.5 – 48
Face Width – 5
Unground Tooth – AGMA Q9
Ground Tooth – AGMA Q13
Non-Intersecting Axes
![Hypoid NI Hypoid NI](../static/picture/Hypoid-NI.jpg)
Straight Bevel Gears
Size Range and Capability for Straight Bevel Gears
Maximum Pitch Diameter – 28”
Diametral Pitch – 2.5 – 48
Face Width – 6.0
Unground Tooth – AGMA Q9
The Simplest Form of Bevel Gear
![crowning Fig.1 - Crowning on the tooth of a straight tooth bevel gear from the Coniflex cutting process](../static/picture/crowning.jpg)
![coniflex-cutting Fig.2 - Coniflex cutting of a straight bevel gear](../static/picture/coniflex-cutting.jpg)
Zerol® Bevel Gears
Size Range and Capability for Zerol Bevel Gears
Maximum Pitch Diameter – 22”
Diametral Pitch – 1.5 – 48
Face Width – 4.0
Unground Tooth – AGMA Q9*
Ground Tooth – AGMA Q13
* Some configurations to AGMA Quality Number 10 (lapped).
Higher Quality Alternative to Straight Bevel Gears
Zerol Bevel Gears are spiral bevel gears, but the spiral angle of the teeth is zero. If the curvature of the tooth is a large radius, they can easily be confused with a straight bevel gear.
![zerol-spiral-comparison zerol-spiral-comparison](../static/picture/zerol-spiral-comparison.jpg)
Fig. 1 - Comparison between spiral angles of Spiral Bevel and Zerol® Bevel Gears.