Leitz Premium HBLH Dowel Drill Bit 35mm x 70mm Z=3
Premium HBLH Dowel
Drill Bit
Industrial tungsten-carbide dowel and hinge boring bit engineered for automated panel processing. Its Z3 cutting-wing geometry, left-hand HBLH configuration, and aggressive axial-shear design support clean blind-hole machining and stable high-feed production.
Main Product Description
The Leitz Premium HBLH Dowel Drill Bit L37280 is designed for high-volume automated panel manufacturing. Its three-wing Z3 cutting geometry distributes cutting load across multiple edges, helping reduce chip load per wing and support stable drilling in dense composite materials.
Premium-grade tungsten-carbide cutting edges provide wear resistance under repeated production cycles. The left-hand HBLH geometry combines specialized clearance angles with deep chip-evacuation paths to move waste away from blind holes and reduce recutting, heat buildup, and friction marks.
With a 35 mm cutting diameter and 70 mm working length, this bit is suited to hinge-hole preparation, dowel boring, cabinet-component machining, and architectural millwork. The cylindrical shank with flat supports secure engagement in compatible CNC boring blocks and thru-feed gang-drill systems.
Best Fit Applications
Product Highlights
Z3 Wing Configuration
Three cutting wings distribute drilling load to support balanced rotation and clean surface entry in production materials.
HBLH Left-Hand Geometry
The left-hand configuration is designed for compatible multi-spindle boring blocks and continuous automated drilling cycles.
Advanced Axial Shear
Controlled shear geometry slices through melamine, MDF, particleboard, and plywood while helping reduce face fracture.
Compatibility & Installation Notes
Isolate the machine before installation or servicing. Confirm that the spindle and boring block accept a 35 mm left-hand HBLH tool with the supplied cylindrical shank-and-flat configuration. Verify secure clamping, correct rotation, operating speed, feed rate, and drilling depth before production. Inspect chip-clearance channels regularly to prevent debris packing during deep blind-hole cycles.
Increase Automated Boring Stability
The Leitz Premium HBLH Dowel Drill Bit L37280 is designed for high-capacity manufacturers using automated boring infrastructure. Its 35 mm diameter, 70 mm working length, Z3 cutting-wing layout, and left-hand HBLH geometry support stable hole production across dense composite panels and solid-core materials.
Precision clearance angles, axial-shear geometry, and carbide cutting edges help reduce entry fracture, control spindle load, and extend service intervals during continuous cabinet and architectural-millwork production.