一、Product Description
This custom precision spur gear with a keyway is manufactured from 42CrMo alloy steel, a material offering excellent strength, toughness, and fatigue resistance. Capable of withstanding high torque and alternating loads, it is ideal for medium-to-high-speed, heavy-duty transmission applications, effectively resisting tooth surface wear and the risk of tooth breakage. The gear undergoes a black oxide surface treatment, creating a uniform protective layer that enhances rust resistance while reducing friction losses on the tooth surfaces. We offer comprehensive OEM customization services, allowing for adjustments to the module, number of teeth, face width, bore diameter, keyway specifications, and set screw locations based on customer drawings. These gears are widely used in power transmission systems such as gear reducers, conveyor equipment, and industrial transmission modules. As a reliable, OEM-quality component, the gear profile, bore, and keyway dimensions are strictly controlled to ensure precise assembly with the drive shaft, stable transmission, and reliable torque output. With its robust mechanical properties, this 42CrMo spur gear is a preferred choice for heavy-duty transmission applications.
二、Key Specifications
Product Name: Keyway Spur Gear
Material: 42CrMo Alloy Steel
Surface Finish: Black Oxide Treatment
Product Features: High strength and impact resistance; wear and fatigue resistance; secure keyway positioning; rust and corrosion resistance; high torque-bearing capacity
Applications: Gear reducer housings, conveyor transmission mechanisms, industrial automation equipment, and power transmission components for construction machinery.
三、Manufacturing Process
The process begins with cutting 42CrMo alloy steel bar stock, followed by rough turning of the gear blank’s outer diameter, bore, and end faces. High-precision areas—such as the assembly bore and reference end face—undergo finish turning using precision CNC services, with strict control over coaxiality and roundness tolerances. Subsequent steps include hobbing to form the straight gear teeth, machining the keyway and set screw holes, and deburring. A black oxide treatment is applied after all machining is complete. Finally, the finished products undergo gear profile inspection and keyway dimension verification to ensure assembly precision and interchangeability across the batch.
四、Company Profile
Dongguan Shengpeng Precision Technology Co., Ltd. operates as both a manufacturer and a trader, specializing in the OEM custom machining of various alloy steel power transmission components. The factory offers mass production capabilities for non-standard spur gears—including those with keyways—and supports customization of module sizes, keyway dimensions, bore diameters, and surface finishes, as well as heat treatment processes such as quenching and blackening. Capable of handling orders of any scale, the company leverages mature alloy steel machining techniques, flexible customization solutions, and a robust export delivery system to provide global clients in the power transmission equipment sector with one-stop, custom precision mechanical component solutions.
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