PETOLâ„¢ Gearing

PETOL™ GEARENCH provides full-service gear milling of external involute gear forms including, but not limited to Herringbone, Helical, Double Helical, and Spur, meeting the standard of high quality expected of all our products since 1927.

In a recently added facility utilizing state of the art machining centers, new services such as reverse engineering and custom metrology are available for specific gearing requirements. Production equipment includes a 7 axis turn-mill, 5 axis vertical mill-turn and 3D coordinate measuring machine (CMM) with rotary axis.

Shop view.
  • Gear Milling of external involute gear forms
    including, but not limited to:
     Helical – Double Helical – Spur – Herringbone
  • Reverse Engineering of Standard & Metric tooth forms
  • Up to AGMA 12 Quality Level (Standard 2000-A88)
  • Tooth Profile Modification for prototypes or production
  • Custom Metrology
  • Gear Inspection Services
  • Prototype Manufacturing
  • 2" to 16" OD Pinions up to 64" in Length
  • Up to 58" OD Gears and 20" Face Width
  • METROLOGY: (X)62" (Y)118" (Z)55"

Contact us with your specific custom gear requirements.
View/Download Gearing brochure. (5.7MB)

DMG mill-turn.

DMG - DMC 160 FD duoBlock® 5 axis vertical


ZEISS PRISMO® Navigator with rotary axis

Mori Seiki turn-mill.

MORI SEIKI NT 5400/1800 DCG® 5 axis turn-mill

Cutting gear.
vertical pinion.
Cutting pinion.

For over 35 years PETOL GEARENCH has furnished from stock replacement herringbone gears and pinions for most name brand pumping units and mud pumps. Pinions are specially heat-treated to ensure that proper hardness for long life is attained. Please indicate unit make, size/model, and gear/pinions required when making inquiries.

Close-up and inventory.