NMLC HMLC Impregnated Diamond Core Drill Bits 75.31mm OD 52mm ID for Mining Exploration

Price Negotiable

Price: Negotiable

MOQ: N/A

Delivery Time: Based on Detailed Order

Brand: SINOCOREDRILL

Product Description

Product Overview

High-speed impregnated wireline diamond core drill bits designed for geological mine exploration in gold, iron ore, and copper mining applications. Available in NMLC and HMLC configurations with precise dimensional specifications.

Key Specifications

NMLC Wireline Diamond Core Drilling Bit

Outside Diameter: 2.965" / 75.31mm

Inside Diameter: 2.047" / 52mm

Applications & Usage

Primarily recommended for drilling relatively soft, abrasive, unconsolidated formations where impregnated diamond bits are less effective. Also suitable for harder formations when equipment limitations prevent optimal use of impregnated diamond bits.

Site investigation and mineral exploration
Compatible with NMLC core barrels
Prospecting, water and electricity building projects
Construction industry applications for roads, railways, bridges, and buildings

Technical Features

High drilling speed with extended service life
Multiple cutting edges for smoother drilling progress
Diamond-free erosion manufacturing for optimal utilization
Various configurations to meet diverse geological conditions
Comprehensive matrix range for easy selection
Reliable foundation for various drilling requirements

Size Specifications

NMLC Series

Size	Outside Dia. (inch)	Outside Dia. (mm)	Inside Dia. (inch)	Inside Dia. (mm)
NQ	2.970~2.960	75.44~75.19	1.880~1.870	47.75~47.50
NQ-RSG	2.985~2.975	75.82~75.57	1.880~1.870	47.75~47.50
NQ3.032	3.037~3.027	77.14~76.89	1.880~1.870	47.75~47.50
NQ2	2.970~2.960	75.44~75.19	2.000~1.990	50.80~50.55
NQ2-RSG	2.985~2.975	75.82~75.57	2.000~1.990	50.80~50.55
NQ3/NQTT	2.970~2.960	75.44~75.19	1.780~1.770	45.21~44.96
NQ3-RSG	2.985~2.975	75.82~75.57	1.780~1.770	45.21~44.96
NQ3-3.032	3.037~3.027	77.14~76.89	1.780~1.770	45.21~44.96
NMLC	2.970~2.960	75.44~75.19	2.052~2.042	52.12~51.87
NWG/NX	2.970~2.960	75.44~75.19	2.160~2.150	54.86~54.61
NWM	2.970~2.960	75.44~75.19	2.160~2.150	54.86~54.61
NWT	2.970~2.960	75.44~75.19	2.318~2.308	58.87~58.62
TNW	2.970~2.960	75.44~75.19	2.394~2.384	60.80~60.55

HMLC Series

Size	Outside Dia. (inch)	Outside Dia. (mm)	Inside Dia. (inch)	Inside Dia. (mm)
HQ	3.770~3.755	95.76~95.38	2.505~2.495	63.63~63.38
HQ-RSG	3.790~3.755	96.27~98.89	2.505~2.495	63.63~63.38
HQ-3.830	3.840~3.825	97.54~97.16	2.505~2.495	63.63~63.38
HQ-3.895	3.897~3.882	98.98~98.60	2.505~2.495	63.63~63.38
HQ3/HQTT	3.770~3.755	95.76~95.38	2.411~2.401	61.24~60.99
HQ3-RSG	3.790~3.755	96.27~95.89	2.411~2.401	61.24~60.99
HQ3-3.830	3.840~3.825	97.54~97.16	2.411~2.401	61.24~60.99
HQ3-3.895	3.897~3.882	98.98~98.60	2.411~2.401	61.24~60.99
HMLC	3.897~3.882	98.98~98.60	2.505~2.495	63.63~63.38
HWF-long	3.912~3.897	99.36~98.98	3.005~2.995	76.33~76.08
HWF-short	3.897~3.882	98.98~98.60	3.005~2.995	76.33~76.08
HWG/HX	3.897~3.882	98.98~98.60	3.005~2.995	76.33~76.08
HWT	3.897~3.882	98.98~98.60	3.192~3.182	81.08~80.82