Features:   

*Forged Bull Gear

 AISI 4135(35CrMo)

 (Or customized material)

* World Top Class Heat Treatment & Multi-Spindle CNC Machining ensure highest product quality of bull gear exceeding API standard requirements

* Strict QC and Inspection Procedures guarantee better performance and longer service life of bull gear

* Grinding process of Herringbone gear ensures better quality and longer service life than gear hobbing,hardness of tooth surface HRC55-60

* Gear hobbing of Herringbone gear is also available as an option

* Narrow/Wide (7mm/65mm) middle teeth space of the Herringbone gear available

* Rated for drilling operation Pressure maximum 7500 PSI

* Extremely Long Service Life Exceeding API Standard

* Fully interchangeable with major pump models and power end types

* Product Series:

HNA-PE-PS  :  HNA Bull Gear, full sizes and specifications available 

Customized Specific Design & Series of HNA Bull Gear -- API/Non-API Standard