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Gearboxes — Metric Gear Speed Reducers from KHK USA

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

KHK USA supplies metric gear speed reducers and gearbox assemblies for use in industrial automation, conveyor systems, packaging equipment, and material handling. KHK gearboxes are designed to integrate with standard motor flanges and provide reliable, compact speed reduction.

Gearbox Types

KHK USA stocks worm gear speed reducers, spur gear reducers, and helical gear reducers. Each type offers distinct advantages in terms of ratio range, efficiency, noise level, and output torque.

Integration with KHK Gears

KHK gearboxes are designed to be used with standard KHK gear components. Custom shaft configurations, bore sizes, and keyways are available through KHK USA’s secondary operations program.

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
Use This Tool
FAQ

Frequently Asked Questions

KHK worm gear reducers provide ratios from 5:1 to 60:1. Spur gear reducers typically provide ratios from 2:1 to 15:1 in a single stage. Multi-stage configurations provide higher ratios.

Mounting orientation depends on the specific gearbox series. Worm gear reducers can typically be mounted in multiple orientations with appropriate lubrication provisions. Contact KHK USA engineering for specific installation guidance.

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Contact KHK USA

Ready to discuss your metric gear requirements? Our engineering team provides application assistance, custom quotations, and technical support.

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