Girth Gears

Girth Gears

Girth Gears

Product catalog summary
Overview: David Brown Santasalo specializes in the engineering and manufacturing of girth gears, which are crucial for the rotational drive of horizontal mills, rotary mills, and kilns. These gears are designed to be robust, efficient, and durable, with options for cast, fabricated, and multi-segment configurations.
Key Specifications:
  • Power rating up to 10MW per pinion
  • Diameter up to 14 meters
  • Weight up to 105 tonnes
  • Pitch up to 50 module
  • Segment options: 2, 4, 6, and 8 segments
  • Compliance with AGMA standards
System Options: Girth gears can be provided individually or as part of a complete system including mill drive gearbox, pinions, barring drive, and auxiliary equipment.
Material Options:
  • SG Iron: Offers excellent material quality with hardness up to 320BHN and improved load sharing.
  • Cast Steel: Designed for mechanical properties and weld repairability, with liquid quenching to reduce cracking risks.
  • Fabricated Steel: Features high impact strength and consistency through a unique hot forming process.
Gearing Options:
  • T Section: Optimizes stiffness and is resilient to pinion misalignment.
  • Y Section: Provides optimal rim support and stiffness, suitable for rotating mills and kilns.
Contact Information: David Brown Santasalo has a global presence with contacts in Europe, Americas, Asia Pacific, and Africa. For specific inquiries, customers are advised to contact their local representative.
Note: The document was last revised in March 2020, and specifications may change without notice. Consultation with a representative is recommended before product selection.
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Catalog excerpts

Girth Gears-1

David Brown Santasalo David Brown Santasalo has almost three centuries of gear engineering expertise and a huge installed base of successfully operating girth gears worldwide. Usually fitted to the outside of horizontal mills, rotary mills and kilns, girth gears provide the system's primary rotational drive and as such need to be robust, efficient and built to last. David Brown Santasalo delivers a full range of girth gears with cast, fabricated and multi-segment options available for the following applications: Mills • Kilns • Dryers • Coolers • Scrubbers Key benefits: • Cast and fabricated gears rated up to 10MW per pinion • Options for 2, 4, 6 and 8 segment manufacture in cast and fabricated material • Designed to the latest AGMA standards for complete assurance Individual gears or a fully optimised system Girth gears can be supplied individually, or as part of a fully optimised package which includes: • Mill drive gearbox • Girth gear • Barring drive • Auxiliary equipment including couplings, brakes, pedestal bearings and clutches Whichever option you chose, rest assured that your girth gear will be designed to complement your whole system.

 Open the catalog to page 1
Girth Gears-2

T section gearing options Y section gearing options T section gears are designed to optimise stiffness across the gear’s facewidth. David Brown Santasalo T section gears are resilient to pinion misalignment, ensuring robust, reliable operation. David Brown Santasalo uses Finite Element Analysis (FEA) to deliver optimal gear performance. Y section designs have been extensively used on rotating mills and kilns for many years and David Brown Santasalo has long standing experience in providing this type of girth gear. Y section gears offer optimal rim support and stiffness over the facewidth of the...

 Open the catalog to page 2

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.