Size Range and Capability for Straight Bevel Gears
Maximum Pitch Diameter
Diametral Pitch
Face Width
Unground Tooth
28”
2.5 – 48
6.0
AGMA Q9
The Simplest Form of Bevel Gear
Zerol®
Zerol® Bevel Gears
Size Range and Capability for Zerol Bevel Gears
Maximum Pitch Diameter
Diametral Pitch
Face Width
Unground Tooth
Ground Tooth
22”
1.5 – 48
4.0
AGMA Q9*
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.
Fig. 1 - Comparison between spiral angles of Spiral Bevel and Zerol® Bevel Gears.