HSS R Rolled Twist Drill Bits

For everyday metal drilling, a straightforward HSS twist drill is often the practical choice. RONGKE HSS R Rolled Twist Drill Bits use a rolled flute construction with two cutting lips and a 118° point, providing a familiar configuration for general workshop operations.

The drills are available in cylindrical-shank jobber-length configurations referenced to DIN 338. Common sizes include 3, 4, 5, 6, 8 and 10 mm, giving buyers a range of options for different hole requirements.

They are intended for drilling steel, aluminium and other common workshop components. When ordering, the required diameter, hole depth, workpiece material and machine setup should be confirmed to ensure the selected drill matches the job.

Key Facts at a Glance

Technical Specifications

Key Product Advantages

HSS Material for General Metal Drilling

The HSS construction is suited to routine drilling work in steel, aluminium and common metal workshop components, making this series a practical option for general-purpose applications.

Rolled Flute Construction

The rolled flute provides a conventional twist-drill configuration for maintenance, fabrication and general metalworking. The helical flutes provide a path for chips to leave the cutting area during drilling.

118° Point Geometry

A 118° point is used for the reference configuration, providing a familiar geometry for general-purpose drilling applications and straightforward tool selection.

Cylindrical Shank

The cylindrical shank makes it easy to specify the drill according to the available chuck and machine setup. Buyers can confirm the required holding arrangement before ordering.

DIN 338 Jobber-Length Reference

The standard configuration follows DIN 338 jobber-length dimensions, giving purchasers a clear reference when comparing sizes and selecting replacement drills.

Standard Sizes with Non-Standard Support

RONGKE can supply common sizes such as 3–10 mm, while its in-house cutting-tool development and manufacturing capabilities also support customized non-standard tooling requirements.

Applications & Procurement Scenarios

General Metalworking

Suitable for routine drilling operations involving steel, aluminium and common metal components. It can be used where a conventional HSS twist drill is required for everyday workshop work.

Workshop Maintenance

A practical option for maintenance teams handling replacement parts, brackets, fixtures and general repair work where different hole sizes may be required.

Metal Fabrication

Used for drilling holes in general fabricated metal components and workshop assemblies. Diameter and drill length can be selected according to the actual workpiece.

Mechanical Components

Suitable for routine hole-making in common machinery components and workshop parts where standard drilling requirements do not call for a specialized deep-hole or application-specific tool.

Suitable Procurement Customers

The series can be considered by:

● General machinery manufacturers

● Metal fabrication companies

● Maintenance workshops

● Machine shops

● Industrial tool distributors

● Cutting-tool traders

● Workshop tooling suppliers

For larger or application-specific requirements, buyers can provide the material grade, hole dimensions, machine type and quantity so RONGKE can confirm the appropriate configuration.

Why Choose RONGKE?

In-House Cutting Tool Manufacturing

RONGKE has independent capabilities covering cutting-tool R&D, production and inspection. The company has more than ten years of experience in precision hole-processing cutting tools and operates an independent laboratory for product development and testing.

Standard and Customized Tooling

In addition to standard cutting tools, RONGKE develops and manufactures non-standard cutting tools for specific machining requirements. This allows buyers to discuss special dimensions or configurations rather than being limited to standard catalogue products.

Digitalized Production Management

Digital data acquisition equipment and an MES system are used for production management. The 5-axis CNC workshop combines MES management with intelligent robotic arms to support automated manufacturing.

Professional Technical Support

Before purchase, RONGKE engineers can provide technical consultation and product selection assistance. Sample trial cutting is also available when a customer needs to evaluate a tooling solution against an actual machining application.

Growing International Supply Experience

RONGKE products have been exported to Russia and other overseas markets, with ongoing cooperation with international customers. The company's products have also received recognition from established cutting-tool companies, including OSG Japan.

A Manufacturer Focused on Hole-Processing Tools

Rather than covering unrelated industrial products, RONGKE focuses on CNC hole-processing cutting tools and customized non-standard cutting tools. This specialization supports continuous development of drilling solutions for different machining requirements.

Controlled Manufacturing and Inspection

RONGKE uses a combination of precision manufacturing equipment and dedicated inspection instruments to control tool quality. Its equipment includes Haas machining centers, high-end imported 5-axis linkage tool grinders, CNC lathes and precision grinding machines.

Professional coating furnaces and heat-treatment facilities are also used within the company's manufacturing system for applicable cutting-tool processes.

For inspection, RONGKE is equipped with coordinate measuring machines, tool contour detectors, hardness testers and roughness testers. Tool dimensions, cutting-edge profiles and relevant surface or coating characteristics can be checked during production and before supply.

Certified Management Systems

RONGKE has established a management system covering quality, environmental protection and occupational health and safety. The company holds:

● ISO 9001 Quality Management System Certification

● ISO 14001 Environmental Management System Certification

● ISO 45001 Occupational Health and Safety Management System Certification

● National High-Tech Enterprise Certification

● Doctoral Innovation Workstation

● Multiple National Utility Model Patents

These qualifications support RONGKE's standardized approach to manufacturing, quality management and continuous technical development.

FAQ

What materials are HSS R Rolled Twist Drill Bits suitable for?

They are intended for general metal drilling applications, including steel, aluminium and common workshop components. The final drill selection should take the material grade, hardness and machining conditions into account.

What is the standard configuration of these drill bits?

The reference configuration uses HSS material, rolled flutes, a 118° point, right-hand cutting and a cylindrical shank. DIN 338 jobber length is used as the dimensional reference.

What sizes are available from RONGKE?

Common reference sizes include 3.0, 4.0, 5.0, 6.0, 8.0 and 10.0 mm. Other requirements can be discussed with RONGKE according to the application.

Are these drills suitable for workshop maintenance?

Yes. The rolled HSS twist-drill configuration is intended for routine drilling in general metalworking, maintenance and fabrication applications.

Can RONGKE manufacture non-standard HSS drill bits?

RONGKE provides customized non-standard cutting tools. For a specific requirement, buyers should provide the required diameter, length, workpiece material, machine type and machining conditions for evaluation.

What information is needed for an HSS drill quotation?

Please provide the drill diameter, required hole depth, workpiece material, machine type and order quantity. If there are special requirements for dimensions or drill geometry, include them with the inquiry so RONGKE can confirm the suitable configuration.