Structured Manufacturing Data (2026)

Rotary-Percussive Drill Head

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Rotary-Percussive Drill Head used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Rotary-Percussive Drill Head is characterized by the integration of Cutting Teeth/Inserts and Threaded Shank. In industrial production environments, manufacturers listed on CNFX commonly emphasize High-strength alloy steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A specialized drilling component that combines rotary and percussive actions to bore holes in rock formations.

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Product Specifications

Technical details and manufacturing context for Rotary-Percussive Drill Head

Definition
The rotary-percussive drill head is a critical component of rock bolting rigs used in mining and tunneling operations. It functions as the primary interface between the drilling machinery and the rock surface, delivering both rotational torque and impact force to efficiently penetrate hard geological formations for rock bolt installation.
Working Principle
The drill head receives rotational power from the rig's hydraulic or electric motor while simultaneously receiving percussive impacts from a hammer mechanism. This dual-action approach allows it to both grind and fracture rock material, significantly improving drilling efficiency in hard rock conditions compared to pure rotary or pure percussive methods.
Common Materials
High-strength alloy steel, Tungsten carbide
Technical Parameters
  • Drill head diameter, typically ranging from 28mm to 45mm for standard rock bolting applications (mm) Per Request
Components / BOM

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Rotary-Percussive Drill Head.

Rotary Hammer Drill Head Combination Drill Head rotary percussive drill head for rock drilling high-strength alloy steel drill head tungsten carbide cutting teeth drill components industrial rock boring drill head threaded shank percussive drill head

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Rock Bolting Rig
View system integration details

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 250 bar
flow rate: 50-300 L/min
temperature: -20°C to 120°C
slurry concentration: Up to 40% solids by weight
Media Compatibility
✓ Granite ✓ Limestone ✓ Sandstone
Unsuitable: Highly abrasive quartzite formations
Sizing Data Required
  • Required hole diameter (mm)
  • Rock compressive strength (MPa)
  • Desired penetration rate (m/hour)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Bearing fatigue and seizure
Cause: High cyclic loading from percussive impacts combined with inadequate lubrication leads to micro-pitting, spalling, and eventual bearing lock-up.
Percussion piston or striker wear/fracture
Cause: Metal fatigue from repeated high-energy impacts, often accelerated by misalignment, contamination (e.g., rock dust ingress), or improper air/oil mixture in pneumatic models.
Maintenance Indicators
  • Unusual metallic grinding or knocking sounds during operation, indicating bearing failure or internal component contact.
  • Decreased drilling speed or power despite normal operating pressure, signaling internal wear, leakage, or blockage.
Engineering Tips
  • Implement strict lubrication schedules using manufacturer-specified grease/oil, and monitor for contamination; consider automatic lubrication systems for continuous-duty applications.
  • Conduct regular alignment checks and inspect wear components (e.g., striker, bushings) per usage hours; use vibration analysis to detect early bearing or imbalance issues.

Compliance & Manufacturing Standards

Reference Standards
ISO 11148-6:2012 - Safety requirements for hand-held non-electric power tools - Part 6: Rotary-percussive drills ANSI B173.1-2018 - Safety Requirements for Portable, Compressed-Air-Actuated Fastener Driving Tools and Accessories (relevant for pneumatic models) DIN EN 60745-2-1:2010 - Hand-held motor-operated electric tools - Safety - Part 2-1: Particular requirements for drills and impact drills
Manufacturing Precision
  • Bearing seat diameter: +/-0.015 mm
  • Impact mechanism alignment: 0.05 mm total indicator runout
Quality Inspection
  • Hardness testing of impact components (Rockwell C scale)
  • Torque and rotational speed performance verification under load

Factories Producing Rotary-Percussive Drill Head

Manufacturer profiles with relevant production capability in China

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What materials are used in this rotary-percussive drill head?

This drill head is constructed from high-strength alloy steel for durability and features tungsten carbide cutting teeth/inserts for superior wear resistance in rock formations.

How does the flushing channel system work in this drill head?

The integrated flushing channels efficiently remove drill cuttings and debris from the borehole, maintaining optimal drilling performance and preventing clogging during operation.

What types of drilling applications is this drill head designed for?

This specialized rotary-percussive drill head is engineered for industrial rock boring applications in mining, construction, and quarrying where combined rotary and impact forces are required.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data basis: CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks for Machinery and Equipment Manufacturing.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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