Products Description
The ball mill girth gear is a critical drive component used to transmit torque from the pinion gear to the rotating mill shell. As a key gear part in mining grinding equipment, it directly affects operational stability, energy efficiency, and service life.
Manufactured from BS3100 Grade BT-1 steel, our mill girth gear offers excellent toughness and resistance to impact loads. Advanced CNC machining and gear cutting technologies ensure accurate tooth profile, controlled gear module, and uniform load distribution. The optimized tooth geometry minimizes vibration and noise during long-term operation.
As a high-quality manufacturer and gear supplier, we provide customized ball mill gear solutions for various production line capacities, ensuring reliable performance in demanding mining environments.

01
Heavy-Duty Design
Optimized for large gear manufacturers serving mining and cement industries.
02
Precision Gear Cutting
Accurate tooth spacing ensures smooth engagement with pinion gear.
03
Custom Manufacturing
Gear module, diameter, and face width tailored to ball mill specifications.
04
Full Process Control
From pattern making to final inspection, all steps are internally managed.
Manufacturing Process | Controlled Production from Casting to Gear Cutting
- Pattern Making
- Supply of Material
- Casting
- Heat Treatment
- Fettling
- CNC Machining
- Gear Cutting
- Drilling & Tapping
- NDT
- Final Quality Inspection
- Anti-Rust Protection & Painting
- Packaging
Technical Specifications | Precision Parameters for Ball Mill Gear
| Material | BS3100:1976 Grade BT-1 |
| Gear Type | Ball mill girth gear |
| Gear Module | Customized per design |
| Tooth Profile | Precision involute |
| Hardness | ≥200BHN |
| Pressure Angle | 25° |
| General Tolerance | ±0.25mm |
| Machining | CNC machining |
| Application | Ball mill, crusher spare parts,SAG mill |
Quality Control & Inspection System





Documented, Measurable, Traceable:
- Chemical Composition Testing
- Mechanical Properties Testing
- Normalizing, Quenching & Tempering Records
- Ultrasonic Testing (UT)
- Magnetic Particle Inspection (MT)
- Hardness Testing
- Dimensional Inspection
- Gear Inspection (tooth ring & pitch)
- Geometric Runout Measurement
- Surface Roughness Inspection
All inspections are supported by detailed reports and photos, ensuring full transparency and reliability.

Packaging & Protection

Engineered Packaging for Large Mining Gears
Ball mill girth gears are large, heavy, and high-value gear parts, requiring specially engineered packaging solutions. Based on gear size, weight, and shipping method, we adopt either stacked packing or fumigation-free wooden crates combined with reinforced steel frames. For container shipments, gears are fixed on custom steel bases to prevent movement and deformation during transit.
Before packing, each girth gear is treated with anti-rust protection, wrapped with moisture-resistant film, and secured using shock-absorbing materials. All lifting points, centerlines, and handling instructions are clearly marked on the outer packaging. This packaging system ensures safe transportation of ball mill gear and pinion gear assemblies over long distances, minimizing risk during sea freight and inland transport.
Products Description
Professional Export Service for Heavy Gear Equipment
As an experienced gear manufacturer and gear supplier, we provide comprehensive global shipping solutions for ball mill girth gear and other large industrial gears. Depending on cargo size and destination, we arrange container shipping, bulk cargo, or project logistics.
Each shipment includes a complete export document package, such as commercial invoice, packing list, bill of lading, certificate of origin, inspection reports, and quality certificates. Our logistics team coordinates closely with freight forwarders to manage booking, loading supervision, and delivery schedules. With proven export experience to multiple international markets, we ensure safe, compliant, and on-time delivery for mining equipment and crusher spare parts worldwide.

On-Site Inspection by Overseas Customers

Transparency and Trust in Gear Manufacturing
We welcome overseas customers to visit our production facility for on-site inspection of ball mill girth gear manufacturing and quality control processes. During factory visits, customers can review raw material certificates, observe gear cutting and CNC machining operations, and witness key inspections such as ultrasonic testing, magnetic particle inspection, and gear accuracy checks.
Our engineering and quality teams provide detailed explanations of production flow, inspection standards, and test reports. This open approach allows customers to verify product quality firsthand and ensures full confidence before shipment. Such on-site inspections further strengthen long-term cooperation with international gear suppliers and mining equipment manufacturers.
Inquiry & Custom Ball Mill Girth Gear Solutions
Contact us today to receive a customized ball mill girth gear solution. As an experienced gear supplier and manufacturer company, we deliver precision, durability, and long-term value for your mining production line.
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