KHK USA, a subsidiary of Kohara Gear Industry Co., Ltd. of Japan, is the leading machine tool gearbox fabricator in North America. With over 90 years of precision gear manufacturing excellence, KHK has built an unmatched reputation as the most trusted machine tool gearbox fabricator serving machine tool builders, CNC system manufacturers, and precision machining specialists across the United States and beyond.
As the largest machine tool gearbox fabricator on the continent, KHK USA offers more than 27,000 standardized metric gear configurations across 200+ gear styles — including spur gears, helical gears, bevel gears, miter gears, worm gears, gear racks, CP racks & pinions, internal ring gears, screw gears, and gearboxes. Every product is manufactured to exacting tolerances at KHK’s state-of-the-art facilities in Japan and delivered to your door within 3 business days from our Mineola, New York warehouse.
Engineers and procurement professionals choose KHK USA as their preferred machine tool gearbox fabricator for machine tool systems applications because of our unrivaled combination of product breadth, quality certifications, and speed of delivery. Our entire product line is both ISO 9001:2015 and ISO 14001:2015 certified, and we are fully ITAR compliant.
KHK USA is not a reseller or broker — we are the factory-direct source. This means you get manufacturer-direct pricing, full engineering support, and access to the deepest inventory of metric gears available anywhere in North America. Our J-Series custom gear program delivers made-to-order gears with secondary operations in as few as 5 business days.
Machine Tool Systems demands gears that deliver precision positioning accuracy, vibration-free power transmission, and thermal stability for tight-tolerance machining operations. As a specialized machine tool gearbox fabricator, KHK USA supplies gears engineered for the full range of machine tool systems applications — from lathes, milling machines, grinding machines, drilling machines, boring mills, and multi-axis machining centers.
Our metric spur gears and helical gears deliver smooth, efficient power transmission with minimal backlash. For right-angle drives, our bevel and miter gears provide reliable 90-degree motion transmission. Worm gears offer self-locking capability, while our precision gear racks and pinions deliver linear motion accuracy.
Metric Spur Gears — Modules 0.5–10. Carbon steel, stainless, alloy steel, nylon, acetal, brass, bronze, aluminum bronze, cast iron.
Metric Helical Gears — Precision and ground options. Right and left hand.
Metric Bevel Gears — Straight and spiral for right-angle transmission.
Metric Miter Gears — 1:1 ratio, 90-degree direction changes.
Metric Worm
KHK USA is the largest machine tool gearbox fabricator in North America, backed by 87+ years of Japanese precision manufacturing. Over 27,000 configurations, factory-direct pricing, ISO 9001:2015 and ITAR compliance, and 3-business-day delivery.
Complete range of metric gears: spur, helical, bevel, miter, worm, racks & pinions, internal ring gears. Multiple materials including carbon steel, stainless steel, alloy steel, brass, bronze, nylon, acetal.
Yes. J-Series program delivers custom metric gears within 5 business days. Bore modifications, keyway cutting, hub reduction, and tapped holes available.
Same-day processing, 3-business-day delivery on stocked items from Mineola, NY. 27,000+ configurations in stock.
Factory direct from Japan. Ships anywhere in the USA in 3 business days. 87+ years of precision manufacturing.
