Mill Gear Ring

1. Product Description: The mill gear ring is a large ring gear mounted on the mill cylinder. It precisely meshes with the drive pinion, converting the powerful torque of the motor into rotational motion of the mill cylinder.
2. Product Structure: The large ring gear is constructed of two or four split halves, connected by high-strength alloy steel bolts.
3. Size Range: 1000mm-10000mm.
4. Customization Supported: Whether you have specific size, tooth profile, or structure requirements, our engineering team can provide you with a professional custom solution.
5. Materials: 45#, 55#, 40Cr, 42CrMo, ZG35CrMo, etc. Custom materials are available upon request.
6. Applications:
Cement, mining, power, chemical and metallurgical, and other industries

Product Description

Mill Gear Ring - Heavy-Duty Ring Gears for Industrial Milling Equipment

Product Details

When your grinding operations require a reliable, high-torque drivetrain, our mill gear rings deliver the performance you need. Designed for continuous heavy-duty operation, these large gear rings mount directly to the mill cylinder and mesh precisely with the drive gears, converting motor torque into smooth rotary motion. Whether you're processing cement, minerals, or coal, our products ensure stable power transmission under extreme loads. Each gear ring is precision-manufactured to withstand the harsh conditions of ball mills, tube mills, and rod mills in mining, cement, and power plants.

Our gear rings feature a segmented design—typically consisting of two or four segments—connected by high-strength alloy steel clamp bolts. This unique design simplifies installation, reduces downtime during maintenance, and facilitates the transport of large-diameter components. You get a product that combines practicality and ease of maintenance.

We manufacture adapter rings using premium composite steels, including 45#, 55#, 40Cr, 42CrMo, and ZG35CrMo, and custom materials are available upon request. Our standard sizes range from 1000 mm to 10000 mm, and our design team can tailor a suitable solution for you based on your specific tooth profile, module, and basic requirements.

Why Choose Us?

Industry Experience: Luoyang Hengguan Bearing Technology Co., Ltd. boasts over 20 years of experience in bearings and precision machining, integrating exquisite craftsmanship into every product.

Advanced Machining Equipment: We utilize CNC vertical machining centers, CNC milling machines, CNC forming machines, gear hobbing machines, and machining centers to ensure dimensional accuracy and surface quality.

Customization Capabilities: We can undertake non-standard customized projects based on your drawings or reverse engineering designs. Our team supports full-process technical discussions, product design, and manufacturing from concept to delivery.

Quality Management: We are ISO 9001 certified and RoHS compliant. Our production process follows strict quality control procedures, ensuring full traceability from raw materials to finished products.

Global Coverage: Our products serve customers in over 50 countries and regions, including the United States, Germany, South Africa, Australia, and the entire Middle East.

Technical Support: We have a team of over 50 R&D and manufacturing experts providing decision-making guidance, installation support, and ongoing technical support.

Technical Specifications

Parameter	Specification
Outer Diameter Range	1000 mm – 10000 mm
Materials	45#, 55#, 40Cr, 42CrMo, ZG35CrMo (custom available)
Tooth Surface Hardness	HRC 55-62 (after induction hardening)
Core Hardness	HRC 25-35 (after quenching and tempering)
Gear Accuracy Grade	ISO 1328 Class 7-9 (customizable)
Modulus Range	8 mm – 50 mm
Heat Treatment	Overall quenching and tempering + tooth surface induction hardening
Structural Design	Split segments (2 or 4 pieces) with bolted connections
Surface Finish	Ra 3.2 – 6.3 μm
Manufacturing Standards	ISO, DIN, GB

Certification

Mill Gear Ring certification

FFeatures and Benefits

Sectioned Development: Part plan empowers simpler establishment on existing process barrels and streamlines support without total dismantling. This diminishes your Gear downtime significantly.

Advanced Warm Treatment: By and large extinguishing and hardening makes a uniform sorbite microstructure in the center, conveying tall durability to retain affect loads. Medium-frequency acceptance solidifying on tooth surfaces gives extraordinary wear resistance whereas keeping up center ductility.

High Stack Capacity: The combination of high-quality amalgam steel and controlled warm treatment guarantees your adapt ring withstands overwhelming outspread loads, stun impacts, and ceaseless cyclic stretch commonplace in processing operations.

Precision Tooth Profile: CNC adapt forming and hobbing deliver exact involute tooth geometry, guaranteeing smooth fitting, diminished vibration, and productive torque transmission all through the benefit life.

Comprehensive Quality Control: Each unit experiences ultrasonic testing (UT), attractive molecule assessment (MT), and dimensional confirmation to ensure inner and surface quality some time recently shipment.

Applications

Our mill gear ring products serve critical grinding equipment in multiple industries:

Mining: Ball mills and rod mills are used for processing gold, copper, iron, zinc, and other metallic ores through mineral processing.

Cement Production: Ball mills and tube mills are used for raw material preparation, coal grinding, and clinker grinding in cement plants.

Power Generation: Coal pulverized grinding systems requiring reliable and continuous operation in thermal power plants.

Metallurgy and Chemicals: Slag micronizer mills, metallurgical additive grinding, and chemical raw material preparation equipment.

Other Industries: Raw material grinding equipment for ceramics, glass manufacturing, and non-metallic mineral processing.

Testing & Certification

Our facility is ISO 9001 certified, and all products comply with RoHS environmental standards. We employ rigorous testing procedures including:

· Coordinate measuring machines for dimensional accuracy verification

· Ultrasonic testing (UT) for internal defect detection

· Magnetic particle testing (MT) for surface crack identification

· Hardness testing across tooth surfaces and core sections

· Gear accuracy measurement per ISO 1328 standards

Each shipment includes complete material certificates and inspection reports for full traceability.

Installation Guide

1. Pre-Installation Inspection: Verify all bolt holes align properly and check tooth surfaces for any shipping damage.

2. Positioning: Lift gear ring segments carefully using appropriate lifting equipment. Position segments on the mill cylinder with bolt holes aligned.

3. Assembly: Install high-strength bolts in a cross-pattern sequence. Apply manufacturer-specified torque gradually in multiple stages to ensure uniform compression.

4. Alignment Check: Measure radial and axial runout using dial indicators. Adjust segment positions if measurements exceed tolerance limits.

5. Pinion Meshing: Install the drive pinion and verify proper backlash and contact pattern. Adjust center distance if necessary.

6. Final Inspection: Rotate the mill manually to confirm smooth operation without binding or unusual noise before applying power.

Exhibition

We attend many famous international exhibitions such as Shanghai International Maritime Exhibition,Mining World Russia, bauma China, CTT Russia, etc

Partners

Your trust, we cherish in heart all times and will reciprocate that trust with unwavering quality.

Packaging & shipping

Your goods are unique, and their journey should be flawless. Therefore, we offer professional and customized packaging services. Our experienced team will evaluate your goods' characteristics, transportation route, and environmental requirements to recommend the most secure solution, such as: wooden crate packaging, sturdy frame packaging, or composite reinforced packaging (wooden crate + iron frame).

Maintenance and Care

Standard Oil: Apply fitting equip grease agreeing to your process manufacturer's details. Screen grease condition and defilement levels.

Periodic Review: Check tooth surfaces month to month for wear designs, setting, or splitting. Early discovery avoids disastrous failures.

Bolt Torque Confirmation: Re-torque association jolts after the to begin with 100 working hours, at that point each 6 months or per your support schedule.

Alignment Checking: Check adapt ring arrangement quarterly. Misalignment quickens wear and increments stretch on teeth.

Wear Estimation: Report tooth thickness estimations to track wear rates and arrange substitution some time recently execution deteriorates.

FAQ

Q: Can you fabricate equip rings bigger than 10000mm?

A: Yes, we can talk about bigger distances across based on your particular necessities. Contact our designing group with your specifications.

Q: What lead time ought to I anticipate for custom orders?

A: Standard plans regularly transport inside 6-8 weeks. Complex custom ventures may require 10-12 weeks depending on details and testing requirements.

Q: Do you give establishment support?

A: Yes, we offer establishment direction and can organize on-site specialized bolster for huge projects.

Q: What documentation do you give with shipments?

A: Each arrange incorporates fabric certificates, dimensional review reports, warm treatment records, and working manuals.

Q: Can you reverse-engineer equip rings from existing equipment?

A: Yes, we give mapping administrations for substitution parts when unique drawings are inaccessible.

Contact Us

Ready to discuss your Mill Gear Ring requirements? Our engineering team is here to help you select the right solution. Email us at mia@hgb-bearing.com for technical consultation and quotations.

WHAT OUR CUSTOMERS SAY

Here is the customer's evaluation of us

From Europe

As a leading construction machinery manufacturer in Europe, we are very impressed with the quality and performance of your slewing rings. The precision machining and consistent quality meet our strict standards. A reliable global supplier!

From United States

Our CT scanners require extremely smooth rotation, low noise, and no magnetic interference. Your product perfectly meets these requirements, operating virtually silently without compromising image quality. Your technical expertise is truly impressive!

From Southeast Asia

We have been the distributor of your brand for many years and have received excellent customer feedback. Your diverse product line meets diverse customer needs, and our consistent quality makes us very competitive in the market. Your technical support and service team are also fantastic!

From United States

The slewing bearing selected for our wind turbine main drive system has exceeded our expectations in terms of precision and reliability. It operates smoothly even in extreme wind conditions and has a long maintenance cycle, significantly reducing our lifecycle costs. We are a trustworthy partner!

From the Middle East

Our equipment required a slewing bearing with non-standard dimensions and special gears. We contacted several companies but they all said they couldn't make it. Not only did you accept the order, but we also communicated smoothly throughout the entire process from proofing to mass production, and the finished product fully met our design requirements. This customization capability demonstrates your true technical strength.

From Europe

We have integrated your slewing rings into our new line of crawler cranes. The performance under full load and in extreme weather conditions has been flawless. The precision and durability meet the highest European standards. A truly reliable component for critical applications.

From North America

The harsh, sandy environment of our port is a true test for any equipment. Your slewing bearings' superior sealing system has effectively kept out abrasive contaminants. Our ship-to-shore cranes have seen a dramatic increase in uptime and service life since switching to your brand.

From the Middle East

In the mining industry, equipment failure is not an option. The immense strength and robust construction of your large-diameter slewing bearings have withstood the incredible shocks and loads in our mining excavators. Their reliability is directly contributing to our productivity.