Mature technology,excellent product consistency.
Mature Technology & Excellent Product Consistency: Manufactured using a German-made HOFLER 1250 gear grinding machine, this bull gear achieves Grade 3 to Grade 6 accuracy. The high-precision grinding process ensures excellent product consistency and reliable operation for metallurgical rolling mill applications.
Superior Wear Resistance & Durability: Crafted from 18CrNiMo7-6 material and treated by surface hardening, this bull gear reaches a tooth surface hardness of 58–62 HRC, featuring superior wear resistance in metallurgical operations.
Precision Engineering for Reliable Transmission: With a module of 12, 87 teeth, and a pressure angle of 20°, this bull gear is engineered for optimal load distribution and smooth power transmission in metallurgical rolling mill gearboxes.
Product Overview: This bull gear is designed for gearboxes used in metallurgical rolling mills and has been applied in multiple projects both at home and abroad.
Core Technical Parameters: Features a module of 12, 87 teeth, and a pressure angle of 20°, engineered for high-torque transmission in metallurgical applications.
Comprehensive Gear Manufacturing Process: Our gear manufacturing process includes forging blank forming, turning, gear hobbing, heat treatment, fine turning, and gear grinding to ensure dimensional accuracy.
Traceability & Quality Assurance: For full product traceability, each bull gear is engraved with its model and serial number. Equipped with a process card, every component proceeds to the next process only after passing inspection by quality inspectors upon completion of each procedure.
Custom Gear Design & Development: To meet diverse customer requirements, our company provides customized gear design and development services as well as customized production based on customer-supplied drawings.
| Item | Details |
|---|---|
| Application | Metallurgical rolling mill gearbox |
| Raw Material | 18CrNiMo7-6 |
| Module | 12 |
| Number of Teeth | 87 |
| Pressure Angle | 20° |
| Heat Treatment Mode | carburizing and quenching |
| Tooth Surface Hardness | 58-62 HRC |
| Processing Equipment | German HOFLER 1250 Gear Grinding Machine |
| Gear Accuracy | Grade 3 - Grade 6 |
| Main Markets | China, United States |



As a bull gear for metallurgical rolling mills, our products are widely applied in metallurgical applications, delivering mature technology, excellent product consistency, and reliable torque transmission.
Steel Rolling Mills
With a module of 12 and 87 teeth, this bull gear is engineered for optimal load distribution in steel rolling mill gearboxes. Manufactured using a German-made HOFLER 1250 gear grinding machine, it achieves Grade 3 to Grade 6 accuracy, ensuring smooth power transmission in rolling operations.
Metallurgical Rolling Production Lines
Crafted from 18CrNiMo7-6 material and treated by surface hardening, this bull gear reaches 58–62 HRC tooth surface hardness. Its superior wear resistance and durability make it suitable for metallurgical rolling production lines.
Metallurgical Equipment
Featuring mature technology and excellent product consistency, this bull gear ensures reliable performance in metallurgical equipment. The high-precision grinding process and quality control guarantee stable operation in metallurgical production environments.