Precision Grinding Ensures Smooth Motion and High Load Capacity for Demanding Applications
KHK USA Inc. has announced its Ground Helical Rack Series (KRHG, KRHGF, KRHGFD), engineered to deliver exceptionally smooth operation, high torque transmission, and long-lasting performance in precision motion systems. These premium ground helical racks are designed for demanding environments such as machine tools, high-speed automation equipment, and precision positioning systems where accuracy and quiet operation are essential.
The Ground Helical Racks are manufactured from SCM440 alloy steel and undergo thermal refining and induction hardening to achieve outstanding strength, rigidity, and wear resistance. Precision grinding to JIS Grade N6 (KHK Grade 1) ensures each rack meets the most stringent accuracy requirements, resulting in highly consistent surface quality and superior gear contact.
Offered in modules ranging from M1 to M6 and in standard lengths of 100, 500, and 1,000mm, the Ground Helical Rack Series accommodates a wide range of system configurations. The lineup includes:
- KRHG models – Standard configuration for general applications
- KRHGF models – Featuring machined ends for easy connection and alignment
- KRHGFD models – Equipped with machined ends and bolt holes for seamless, secure assembly
The Ground Helical Racks represent KHK’s ongoing commitment to precision and reliability. Each rack is carefully ground finished for smooth motion, high positional accuracy, and optimal performance when paired with KHK helical pinions.
Like all KHK stock gears, the Ground Helical Rack Series is available off-the-shelf and is compatible with standard metric helical pinions, allowing engineers to build precise and efficient motion systems without custom manufacturing delays.
