RUKO KEB-HSS modulfrees 5,5, 56,0 mm diameter, HSS, boring 27 mm, DIN 3968 klasse B

This RUKO module cutter (gear hob) is a precision tool for cutting spur gears, helical gears, and splines on gear hobbing machines. Its module 5.5 profile with a 56.0 mm outer diameter and 27 mm bore fits standard hobbing setups, while the high-speed steel body with ground involute profile delivers DIN 3968 Class B accuracy.

Highlights

• High-speed steel (HSS) for durability and heat resistance
• Ground involute profile for precise tooth geometry
• Right-hand cutting direction with helical flutes for smooth chip evacuation
• Bore type with keyway for secure mounting
• Uncoated surface for versatile use with various coolants

In daily use

Mount the cutter on a gear hobbing machine arbor with the keyway aligned, then set the correct speed and feed for the workpiece material. The single-start design and DIN 8002 / DIN 3972 reference profile produce accurate gears in a single pass, making it suitable for both prototype and production runs.

Full specifications

• Tool Type: Module Cutter (Gear Hob)
• Material: High-Speed Steel (HSS)
• Module (M): 5.5
• Outer Diameter (D): 56.0 mm
• Bore Diameter (d): 27 mm
• Overall Length (L): 70 mm
• Accuracy Class: DIN 3968 Class B
• Profile: Involute
• Number of Starts: Single Start
• Cutting Direction: Right-Hand
• Tooth Form: Helical Flutes
• Application: Cutting Spur Gears, Helical Gears, Splines
• Standard: DIN 8002 / DIN 3972
• Manufacturing Process: Ground Profile
• Coating: Uncoated
• Mounting Type: Bore Type with Keyway
• Suitable For: Gear Hobbing Machines

Final note

For gear manufacturers and maintenance shops, this RUKO hob offers a reliable balance of precision and cost-effectiveness, with a geometry that matches common hobbing machine requirements.