Sprocket wheel bore type

Sprocket Wheel Bore Type


When it comes to milling machines, our company is a leader in the Chinese market. We offer a wide range of products including sprocket wheels, sprocket chains, motorbike sprockets, small sprockets, motor chains, bush chains, plastic chains, and more. With 300 sets of various fully automatic CNC production equipment and automated assembly equipment, we are committed to providing high-quality products, competitive prices, and attentive service to our customers.

Sprocket Wheel

1. Understanding Sprocket Wheel Bore Types

When working with sprocket wheels, it’s essential to understand the different bore types available. The bore of a sprocket wheel refers to the central hole through which the shaft passes. There are various bore types, each suited to specific applications:

  • Standard Bore: The standard bore type is the most common and versatile option. It has a plain, cylindrical hole that fits securely onto a shaft.
  • Keyway Bore: A keyway bore includes a slot, or keyway, that allows for the addition of a key or spline. This ensures a more secure connection between the sprocket wheel and the shaft, preventing slippage.
  • Tapered Bore: A tapered bore gradually narrows towards one end, allowing for a tight and self-locking fit onto a matching tapered shaft.
  • Hex Bore: Hexagonal bore sprocket wheels are designed for hex shafts, providing a more reliable and rigid connection.
  • Square Bore: Square bore sprocket wheels are specifically designed for square shafts, ensuring a precise fit and optimal power transmission.

Sprocket Wheel Application

2. Applications of Sprocket Wheel Bore Types

The choice of sprocket wheel bore type depends on the specific application and requirements. Here are some common scenarios where different bore types excel:

  • Standard Bore: The standard bore is suitable for most general-purpose applications, providing ease of installation and versatility.
  • Keyway Bore: Keyway bores are commonly used in heavy machinery and high-torque applications, where a secure and precise connection between the sprocket wheel and the shaft is crucial.
  • Tapered Bore: Tapered bores are often found in automotive and industrial machinery, offering excellent self-locking capabilities and enhanced load-bearing capacity.
  • Hex Bore: Hex bore sprocket wheels are ideal for robotics and automation systems, providing a rigid and dependable connection.
  • Square Bore: Square bore sprocket wheels are commonly used in agricultural machinery, ensuring reliable power transmission and reduced slippage.


Choosing the right sprocket wheel bore type is essential for achieving optimal performance and reliability in various applications. Whether you require a standard bore, keyway bore, tapered bore, hex bore, or square bore, our company offers a wide range of high-quality sprocket wheels to meet your specific needs. With our emphasis on quality, competitive pricing, and attentive service, we are dedicated to providing the best solutions for our customers.

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Author: Czh