hzpt logo 80px
[email protected]
+86 13083988828
Get In Touch
Product Search

Finished Bore Sprocket

 

ep 1. finish bore sprockets 1 2 1 588673

A Finish Bore Sprocket is a precision machined sprocket characterized by a sprocket center hole that has been specially finished to very high tolerances. This finishing is usually done to ensure a precise fit between the sprocket and the shaft, thereby improving the performance and reliability of the entire drivetrain.

0-non-hardened tooth sprocket

Non-hardened teeth sprocket

hardened tooth sprocket

Hardened teeth sprocket

European Standard PDF
American Standard PDF
Asian Standard PDF

European Standard Finished Bore Sprocket

Finished Bore sprockets For Roller Chains DIN8187-ISO/R606

FINISHED BORE SPROCKET 1

American Standard Finished Bore Sprocket

ASIAN Standard Finished Bore Sprocket

What is a finish bore sprocket?

A Finish Bore Sprocket is a precision machined sprocket characterized by a sprocket center hole that has been specially finished to very high tolerances. This finishing is usually done to ensure a precise fit between the sprocket and the shaft, thereby improving the performance and reliability of the entire drivetrain.

Improved

Alignment

Accuracy

Enhanced

Transmission

Efficiency

Improve
Safety

Improve

Overall

Performance

Finished Bore Sprocket Raw Materials Selection

✔ Steel

  • Carbon Steel: Suitable for general-purpose sprockets with good strength and toughness. Common grades include 1018, 1045, etc.
  • Alloy Steel: Used in situations where higher strength and wear resistance are required, such as 4140 or 4340 alloy steel.

✔ Stainless Steel

  • 304/304L Stainless Steel: Commonly used in environments that require corrosion resistance, such as food processing or chemical industries.
  • 316/316L Stainless Steel: More corrosion-resistant than 304, suitable for marine or high-chloride environments.

✔ Cast Iron

  • Grey Iron: Usually used in low-speed and light-load applications, with lower cost.
  • Ductile Iron: Has better ductility and impact strength, suitable for medium loads and applications that require a certain degree of toughness.

✔ Aluminum Alloy

  • 6061-T6 aluminum alloy: Lightweight and corrosion-resistant, suitable for weight-sensitive applications.
  • 7075-T6 aluminum alloy: Higher strength, suitable for situations that require higher strength but lighter weight.

Manufacturing Process

Forging

Casting

Machining

Hole machining

Heat Treatment & Surface Treatment

  • Annealing: Improve the machinability of materials and eliminate internal stress.
  • Quenching: Improve hardness and wear resistance.
  • Tempering: Increase toughness while maintaining a certain hardness.
  • Coating: Increase corrosion resistance or improve appearance through electroplating, spraying, etc.
  • Galvanizing: Provide anti-rust protection.
  • Anodizing: Increase the corrosion resistance of aluminum alloys.
  • Polishing: Improve surface finish and reduce friction.

Quality Control

ep 0sprockets test 588673

  • Balance Correction
    Dynamic Balancing: By adding or removing material, the sprocket is kept balanced and vibration is reduced when rotating at high speed.

     

  • Deburring: Remove burrs generated during processing.

  • Cleaning: Remove surface residues to prepare for further processing or packaging.

  • Dimensional Inspection: Use tools such as calipers and micrometers to measure key dimensions.
  • Surface Inspection: Check the surface for defects such as cracks, scratches, etc.
  • Hardness Test: Confirm whether the material hardness meets the requirements.
  • Dynamic Balancing Test: Test the balance of the sprocket in the rotating state.