girth gear pinion
Material: 35SiMn、zg45、40Crmo, etc.
Pitch diam: customized as per request
Tooth number: customized as per request
Application: Cement plant
Certificates: ISO9001:2015
Product Introduction
The girth gear and pinion are transmission devices of ball mills. They are toothed mechanical parts that can mesh with each other. When the ball mill rotates, the pinion on the reducer meshes with the girth gear, thereby driving the ball mill to run. Its weight, volume, and cost occupy a large proportion of the whole set of ball mill equipment, and its work efficiency has an important impact on the normal operation of the ball mill.
Ball mill pinion is also called ball mill pinion gear. Different from other mechanical transmission gear, its role is to transfer power according to the specified speed ratio. When the ball mill rotates, the pinion is subjected to a huge torque force. The wear grade of the pinion is higher, and the keyway and key strength of the girth gear are required to be higher.
Materials of ball mill pinion
The material of ball mill pinion can be generally divided into 35 silicon manganese, 40 chromium molybdenum, forged steel quenching, and so on.
High-carbon cast steel is usually used for making the ball mill pinion. To obtain high tensile strength, alloy steel containing silicon, manganese, nickel, and molybdenum may be used. Generally, the girth gear of the ball mill is lower in hardness than the pinion gear. ZG45 is usually adopted for small-scale ball mills. ZG310-570 is preferred for ball mills with larger diameters such as 2.2m or wider. It is more wear-resistant than ZG45 and has good hardness and toughness.
Advantages of ball mill pinion gear by SINOMA Zibo
Strong wear resistance
All pinion materials are quenched and tempered by forgings to get strong wear resistance thus the service life is extended.
High teeth precision
The teeth have been dealt with fine rolling processing which reaches the national standard 8. The noise is less than 90 decibels.
Cost saving
The mass production and overall arrangement of forging blanks lower the price.
Customized specification
Both standard specifications and customized specifications are provided to ensure the pinion fits for clients’ girth gear and ball mill.
The manufacturing process of ball mill pinion
In the first stage, we can develop specific process solutions based on drawings according to different customer needs. In the intermediate stage, each step is strictly monitored. In the later stage, each product is subject to strict 360° nondestructive testing before leaving the factory.
Wood pattern → molding → pouring → pit – sand cleaning- heat treatment – finishing (inspection) → rough processing – (inspection) – finishing (inspection) → assembly – packaging – delivery
Why choose SINOMA Zibo
Considerate services
SINOMA Zibo provides technical consultation, product design, mapping, drawing, manufacturing, installation guidance, on-site inspection, repair, product upgrade, .etc, comprehensive services.
Full set of machining equipment
We have many processing equipment such as CNC vertical lathe, CNC quenching machine, CNC gear shaping machine, machining center, grinding machine, large gear hobbing machine, milling machine, boring machine, etc.
Professional teamwork
We have engineers with more than 20 years of experience in the industry accumulatively served more than 100 companies by providing personalized non-standard customization solutions.
Cases
The girth gear and pinion and other spares are exported to Vietnam, Colombia, Malaysia, Korea, and other countries.
