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Spur Gears — Precision Metric Spur Gears from KHK USA

ISO 9001:2015 Certified AGMA & JIS Standards Same-Day Shipping 2,600+ Standard Items

KHK USA supplies precision metric spur gears for industrial, automation, and OEM applications across North America. Available in a wide range of modules from 0.5 to 10, with tooth counts from 10 to 200 teeth depending on module and material.

KHK Spur Gear Materials

KHK spur gears are available in carbon steel (S45C), stainless steel (SUS303), engineering plastics (MC Nylon, Duracon, Bakelite), and non-ferrous alloys. Each material offers distinct advantages for load capacity, corrosion resistance, and weight.

Spur Gear Standards

All KHK metric spur gears are manufactured to AGMA and JIS B 1702 standards. Precision grades from N8 to N5 are available depending on product series. Ground spur gears (KSS series) achieve N5 precision grade for demanding applications.

Free Engineering Tools

4 Free AI-Powered Engineering Tools

Built exclusively by KHK USA. Not available from any other gear supplier. Click any tool to use it.

01
Compatibility
Gear Assembly Compatibility Checker
Validate that your gear set will mesh correctly before ordering. Get an instant engineering verdict with actionable recommendations.
  • Module & pressure angle match validation
  • Hunting tooth analysis
  • Center distance calculation
  • COMPATIBLE / WARNING / INCOMPATIBLE verdict
Use This Tool
02
Conversion
Module-to-DP Converter & Cross-Reference
Bi-directional conversion between metric Module and imperial Diametral Pitch with KHK standard module matches.
  • Instant bi-directional conversion
  • Closest KHK module matches with deviation %
  • Side-by-side dimensional comparison
  • 12 most common DP quick-reference grid
Use This Tool
03
Reference
Interactive Gear Glossary
Searchable reference of 40 gear engineering terms with definitions, formulas, and direct KHK product links.
  • Real-time keyword search with highlighting
  • 6 category filters — Geometry, Performance, etc.
  • Alphabetical navigation A–Z
  • Direct links to KHK products
Use This Tool
04
Calculator
Gear Torque & Load Calculator
Full Lewis bending stress analysis for gear tooth strength validation with animated safety factor verdict.
  • 9 KHK material options
  • Barth velocity factor equation
  • 8 result cards in metric + imperial
  • Automatic upgrade path recommendations
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FAQ

Frequently Asked Questions

KHK USA offers spur gears in modules 0.5, 0.8, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 8, and 10, depending on the product series and material.

KS series spur gears are hobbed to N8 precision grade, suitable for general industrial use. KSS series are ground spur gears achieving N5 precision grade for applications requiring low noise and high accuracy.

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