KHK USA, a subsidiary of Kohara Gear Industry Co., Ltd. of Japan, is the leading machine tool rack & pinion manufacturer in North America. With over 90 years of precision gear manufacturing excellence, KHK has built an unmatched reputation as the most trusted machine tool rack & pinion manufacturer serving machine tool builders, CNC system manufacturers, and precision machining specialists across the United States and beyond.
As the largest machine tool rack & pinion manufacturer 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 rack & pinion manufacturer 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 rack & pinion manufacturer, 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:
KHK USA is the largest machine tool rack & pinion manufacturer 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.
