Boxin · Hengzhen · Botrust
Precision Manufacturing・Powering the World
MIM
This component is a precision bevel gear manufactured using the MIM metal powder injection molding process. Made from an iron-based alloy, it features high gear‑tooth accuracy, uniform strength, and suitability for mass production. The overall structure comprises a cylindrical shaft section with an internal bore and a bevel‑gear portion; the tooth profile is clear and well‑defined, and the surface finish is even. It is suitable for power transmission systems in applications such as robotic vacuum cleaners, remote‑control models, and small mechanical devices, enabling power transmission and direction change between intersecting shafts.
- Product Description
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I. Basic Product Information
- Product Name : MIM precision bevel gears
- Manufacturing process Metal Injection Molding (MIM)
- Material : Iron-based alloys (customizable to stainless steel, alloy steel, and other materials upon request)
- Core Use : Power transmission components for small machinery, smart home devices, remote-controlled models, power tools, and other equipment, enabling power transmission and speed/torque conversion between intersecting shafts at a 90° angle.
II. Structure and Process Details
- Appearance and Structure
- The entire assembly features an integral molded structure, comprising a cylindrical shaft section and a bevel gear working section, with no welded joints, resulting in enhanced structural strength.
- The gear teeth feature clear, well-defined profiles and uniformly smooth tooth surfaces. Tooth pitch and profile accuracy are ensured by the mold, resulting in excellent consistency, smooth meshing, and low noise levels.
- The center bore exhibits high coaxiality, enabling direct mating with shaft-type components without the need for additional complex machining, thereby reducing assembly costs.
- MIM Process Advantages Are Evident
- High forming accuracy: Complex gear profiles and shaft sections are formed in a single step, with tolerances as tight as ±0.05 mm, meeting the demands of precision transmission.
- Uniform and dense microstructure: The powder metallurgy process ensures a homogeneous internal composition, eliminates casting defects, and yields stable strength and hardness distributions after heat treatment.
- Excellent batch-to-batch consistency: Molded production ensures that the tooth profile, dimensions, and performance of large‑volume parts are highly uniform, making them well suited for automated assembly lines.
- High material utilization: Near-net-shape manufacturing reduces machining allowances, thereby lowering material waste and processing costs.
- Performance Features
- It features low surface roughness, reduced meshing friction, high transmission efficiency, and excellent wear resistance, making it well suited for high‑frequency, long‑duration operating conditions.
- Subsequent heat treatments, such as carburizing and quenching, can further enhance the tooth surface hardness while maintaining core toughness, thereby balancing wear resistance with impact strength.
- Customization is available for module, number of teeth, inner bore diameter, shaft segment length, and other parameters to suit the transmission system design of various equipment.
III. Application Scenarios
It is widely used in applications such as the locomotion mechanisms of robotic vacuum cleaners, differentials in remote-controlled model vehicles, drive assemblies for small power tools, and power modules in smart home devices, making it particularly well-suited for precision‑mechanical fields that demand high part accuracy, strength, and batch-to-batch consistency.
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