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7-tooth 40mm diameter 11° tapered spherical button bit
Product Specifications
Product Name:
7-Tooth Tapered Ball-End Drill Bit
Diameter:
40mm
Body Length:
50mm (50mm/55mm/60mm/68mm/72mm/78mm available)
Tapered Degree:
11° (4°46′,6°,7°,11°,12° available)
Steel Grade:
42CrMo, 45CrNiMoVA
Carbide Grade:
YK05/KD10/KK05/YG9C/YG10C
Net Weight:
0.3 kg per piece
Packaging:
50 pieces per plywood case
Product Overview
The Hanglong 7-tooth tapered ball-end drill bit is engineered for high-precision surface drilling and narrow-space operations in soft to medium-hard rock formations. Combining spherical drill bit design, optimized tooth layout, and compact structure, it is the ideal solution for tunnel profiling, rock carving, slope reinforcement and anchoring, and applications requiring exceptional drilling accuracy.
Key Features & Benefits
Seven evenly distributed carbide buttons designed specifically for contour drilling and curved rock surfaces
Spherical design ensures full contact with curved surfaces and even distribution of impact force
7-tooth configuration increases drilling speed by 18-22% in sandstone, limestone, and weathered granite compared to 5-tooth designs
11° taper angle provides stable drilling performance and prevents slippage
Compatible with most lightweight drill rods and handheld drilling rigs without custom adapters
Ultra-compact 50mm height for access to confined spaces
YG11C tungsten carbide buttons deliver high hardness and impact toughness
Alloy steel body undergoes double heat treatment (quenching + tempering) for enhanced tensile strength and bending resistance
HENGLONG is an internationally recognized and leading producer of superior percussive rock drilling tools.Our high performance products include top hammer drill bits extension and tunneling rods,integral and tapered rods,shank adapters,coupling,drag bits,blast furnace tapping tools,self dr... HENGLONG is an internationally recognized and leading producer of superior percussive rock drilling tools.Our high performance products include top hammer drill bits extension and tunneling rods,integral and tapered rods,shank adapters,coupling,drag bits,blast furnace tapping tools,self dr...
