Regular Product: Powerroc DTH Drill Bit Numa Shank Customized Large Diameter Water Well Drilling

Name: Regular Product: Powerroc DTH Drill Bit Numa Shank Customized Large Diameter Water Well Drilling
Brand: Hunan Powerroc Mining Technology Co., Ltd
SKU: 1996035361

Hunan, ChinaHunan Powerroc Mining Technology Co., Ltd

US$850.00-2,200.00

1 Piece

Sample price:US$800.00/piece.Request sample

Product profile

Customization

Available

Customized

Standard

ISO 9001

Model NO.

DTH-NUMA-LDWW

Length

Taper-length

Type

Center Drill Bit

Material

Tungsten Carbide

Usage

Wood Drilling, Well Drilling, PCB Drilling, Metal Drilling, Masonry Drilling, Large Diameter Water Well Drilling

Shank Type

Numa Shank

Bit Face Design

Drop Center with Ballistic Buttons

Carbide Grade

Advanced Impact Resistant

Body Material

Forged Alloy Steel

Recommended Rpm

20-40 Rpm

Recommended Air Pressure

22-28 Bar

Transport Package

Fumigation Free Solid Wood Case

Specification

Diameter: 203mm (8 Inch)

Trademark

PowerRoc

Origin

China

HS Code

84314310

Production Capacity

2, 50units/Year

Key features

NUMA shank with enlarged spline area handles 30% higher torque loads, perfect for large diameter water well drilling.

Stop bit loss in deep water wells; advanced carbide grade prevents button breakage in high impact conditions.

Independent tests show 25% faster penetration in hard rock aquifers compared to standard DTH bits.

From municipal water supply to irrigation wells, one bit delivers consistent performance.

Drop center bit face with ballistic buttons ensures maximum rock crushing efficiency and hole straightness.

Company profile

Hunan Powerroc Mining Technology Co., LtdHunan, China

Business Type: Manufacturer/FactoryNearest Port: CNZOS, CNSHA, CNSZXAverage Response Time: ≤0.65h

About Our Factory & Business Background

AddressMingcheng Lvgu Smart Industrial Park, Renmin East Road, Changsha, Hunan, China

Registered Capital2,000,000 RMB

Average Lead TimePeak Season Lead Time: one month Off Season Lead Time: one month

Our Production Capability & Technical Expertise

Main ProductsMining Products

Our Industry Experience & Global Business Record

Main MarketsSouth America, Africa, Eastern Asia, Eastern Europe, Mid East, Southeast Asia, Western Europe

Product Q&A

Q:Which NUMA hammer models work with this bit?

This bit fits NUMA 8, NUMA 10, and NUMA 12 hammers. Confirm your hammer model for correct shank matching.

Q:What is the advantage of drop center face design for water wells?

It improves rock crushing efficiency and maintains better hole straightness in deep water well drilling applications.

Q:What is the recommended air volume for this 8 inch bit?

We recommend 750-1,100 CFM air volume at 22-28 bar pressure for optimal chip removal and penetration rate.

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