National Machine Tool Company
Providing Keyway Solutions Since 1903
National Machine Tool Company | National Machine Tool Company Providing Keyway Solutions Since 1903

Keyway Milling of an Aluminum Bearing for a Parts Manufacturing Company

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Keyway Mill Tooling for an Aluminum Bearing
Keyway Mill Tooling for an Aluminum Bearing

At National Machine Tool Company, we provide versatile tool designs for multiple applications. This project involved the manufacturing of a bearing keyseat miller for a customer in the parts manufacturing industry. This customer had 4 keyways 90˚ apart in a blind bore without a relief hole to break into. Our solution at NMT was to design and develop a special keyseat miller designed with a center mounted cutter. This cutter would mill two slots in one pass into the bore utilizing climb milling and conventional milling. The customer would then index the part and repeat the process and mill the other two slots. In addition to CNC milling and turning, we also utilized our grinding applications to manufacture the keyseat miller. The keyway dimensions were .215" in width with a depth of .100". The customer provided drawings called out the use of aluminum material and manufactured to tolerances o ±.0002" for this single unit. Functionality testing in addition to dimensional and visual inspections was completed to verify accuracy. This project highlights our versatility of tool design in a blind bore with multiple indexed slots.

For more information on our keyway mill tooling project or the processes involved to manufacture it, see the table below, or contact us directly.

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Keyway Milling of an Aluminum Bearing Project Highlights

Product Name
Bearing Keyseat Miller
Problem Description
4 keyways 90° apart in blind bore without a relief hole to break into
Solution
Special Keyseat miller designed with center mounted cutter to mill two slots in one pass into the bore utilizing climb milling and conventional milling-customer then indexed the part, repeated the process and milled the other two slots
Capabilities Applied/Processes
Primary:
Engineering
  • Product Development/Design
CNC Milling
CNC Turning
Grinding
Keyway Dimensions
Width: 0.215"
Depth: 0.100"
Tightest Tolerances
Within 0.0002"
Material Cut
Aluminum
In process testing/inspection performed
Dimensional Inspection, Visual Inspection, Functionality
Industry for Use
Parts Manufacturing
Volume
1
Delivery/Turnaround Time
Stock Items: 2- 3 Days
Custom Items: 2 - 3 Weeks
Delivery Location
Nationwide / Worldwide
Standards Met
Customer Specifications, 2D CAD Drawing

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