OEM Heavy Duty Double Helical Ring Gear at Factory Price

Product Description

Product Description

This heavy-duty high-load girth gear (also called ring gear / bull gear) is a core transmission spare part for large industrial rotary equipment. It is widely applied in ball mills, rotary kilns, drums and other heavy rotary machinery. We supply both cast girth gear and forged girth gear for different working condition demands. For ultra-heavy load and high-impact harsh working environments, forged gear blanks are adopted to deliver higher structural compactness, better toughness and stronger fatigue resistance. We professionally customizegirth gear with module greater than 20 (Module ≥20), strictly manufactured according to customer drawings, dimensions and technical specifications. Each gear undergoes complete standardized heat treatment and strict UT/MT non-destructive testing before delivery, ensuring stable long-term operation and ultra-long service life for mining, cement and metallurgical rotary equipment.

Main Features

- Dual production process: cast steel & forged steel optional, matching standard and ultra-heavy load working conditions

- Professional large module customization: Gear Module ≥20, specializing in super-large heavy-duty girth gear for various industrial rotary equipment

- Two structural designs: split-segment type and integral type, convenient for oversize transportation and on-site installation

- Integrated quenching and tempering heat treatment, uniform tooth surface hardness, excellent wear resistance and impact resistance

- Strict UT/MT non-destructive testing to eliminate internal casting and forging defects

- High-precision tooth machining, compliant with ISO, DIN and AGMA international industry standards

- Customizable material, module and size; complete supporting pinion gear set available

- 24-hour continuous operable design, adapting to harsh industrial production environments

Processing

Large size: Large diameter ring gears are designed to handle high loads and torque, which requires a large diameter to distribute the load over a wider area.

High strength: These gears are made of high-strength materials, such as alloy steel, that can withstand the stresses and strains of heavy-duty use.

Precision machining: Large diameter ring gears are machined to precise tolerances to ensure smooth operation and reduce wear and tear.

Heat treatment: The gears undergo specialized heat treatment processes, such as carburizing and quenching, to enhance their strength, durability, and wear resistance. 

Tooth profile: The teeth on the ring gear are designed with specific profiles to ensure smooth and efficient power transmission between the gear and the pinion. 

Mounting options: Large diameter ring gears can be mounted in various ways, such as using bolts, clamps, or shrink fitting, to provide a secure and reliable connection to other rotating components.

Lubrication: Proper lubrication is essential for the smooth operation and long life of large diameter ring gears. They often require specialized lubricants and lubrication systems to maintain optimal performance.

Specification

Item	Specification
Product Name	Gear Ring
Brand	Yogie
Process	Forging, Machining, Heat Treatment
Application	Large printing machines, airplanes, production machinery, port industry, heavy industry machinery, etc.
Processing Material	45#, 40Cr, 20CrMnTi, 20CrNiMo, 17CrNiMo, 42CrMo, etc.
Module of Gear	8-120
Gear Grinding	Max. module 25
Diameter of Gear Wheel	Max. 13,000 mm
Diameter of Spiral Gear	Max. 2,200 mm
Length of Gear Shaft	Max. 5,000 mm
Gear Teeth Treatment	Surface hardening, carburizing and quenching
Blank	Forging, Casting and Welding

Custom Service

1. Accept custom production according to customer drawings, samples and technical datasheets
2. Specialized in Module ≥20 large module girth gear, adjustable material, diameter and precision class
3. Provide cast and forged process solutions based on actual working load conditions
4. Support customized matching pinion gear to ensure perfect meshing performance
5. Provide official factory documents: dimension inspection report, NDT certificate, material certificate

Application

Mainly used as core transmission spare parts for heavy-duty rotary equipment, widely applicable to mineral processing ball mills in mining industry, ball mills and rotary kilns in cement plants, metallurgical rotary drums, and other large rotary machinery that requires large module and high-load gears.

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