Top Deep Hole Drilling Tooling Manufacturers: Overview

The global deep hole drilling industry is built on a foundation of specialized manufacturers — companies that have spent decades perfecting the art of drilling holes tens or hundreds of times deeper than their diameter. Unlike general machining, deep hole drilling demands tooling and machines designed specifically for the process. Choosing the right manufacturer is not a commodity decision; it is a strategic choice that affects hole quality, tool life, cycle time, and ultimately the cost per hole.

Market Overview ​

Market Size and Segmentation ​

The deep hole drilling market is divided into two distinct segments:

Regional distribution of the machinery market:

Types of Manufacturers ​

German Manufacturers: The Technology Leaders ​

TBT Tiefbohrtechnik GmbH + Co ​

TBT is one of the largest specialized manufacturers of deep hole drilling machines and tooling in the world. The company provides machines, tools, and services from a single source — a vertically integrated approach that few competitors can match.

Machine series:

TBT machines feature Siemens CNC controls, positioning accuracy of ±0.02 mm, and Industry 4.0 readiness. The company's UK subsidiary (TBT UK, established 1984) operates one of Europe's largest deep hole drilling subcontracting facilities, handling components up to 25 tonnes.

Key industries: Automotive (BMW, Mercedes, Porsche), aerospace (Airbus A350 landing gear), energy (Siemens gas turbine rotors), medical technology, defence.

TBT's slogan captures its capability: "If there's a requirement to drill or bore holes of say 1 m diameter by 20 m deep, we can build the machine to do it."

botek Präzisionsbohrtechnik GmbH ​

botek is the world market leader in single-flute gun drills and the largest deep hole drilling tool manufacturer globally. The company does not build complete machines — it specializes exclusively in tooling.

Breakthrough innovation: In 1982, botek invented the Type 113 solid carbide gun drill — the world's first gun drill with a kidney-shaped coolant channel, enabling deep hole drilling below 2 mm diameter. This was a critical enabler for modern automotive fuel injection systems.

Core product range:

botek tools achieve tolerances up to IT 7 and surface finishes down to Ra 0.8 μm. The company offers regrinding services and a technical hotline for application support.

Gühring KG ​

Gühring is one of the world's largest cutting tool manufacturers. While not exclusively a deep hole drilling company, its product range includes gun drills, BTA tooling, and solid carbide deep hole drills. Gühring's strength lies in its vast distribution network and broad product portfolio, making deep hole tooling accessible through standard supply channels.

TIBO Tiefbohrtechnik GmbH ​

TIBO specializes in single-lip deep drilling machines for diameters from 1 to 40 mm and depths up to 1,500 mm. The company has built a reputation for practical, cost-effective machines with high automation levels. In 2022, TIBO acquired a smaller specialist to expand its oil and gas portfolio.

Loch Präzisions Bohrtechnik GmbH ​

A German specialist in precision deep hole drilling, offering both subcontract drilling services and custom tooling solutions. Less well-known globally but respected in European precision engineering circles.

United States Manufacturers ​

UNISIG Deep Hole Drilling Systems ​

UNISIG is one of the largest producers of gun drilling and BTA drilling machines in the world. All machines are engineered and manufactured in the USA.

Machine series:

UNISIG manufactures its own tooling including drill tubes, driver systems, vibration dampeners, pressure heads, and workholding chucks. The company is known for advanced automation integration — pallet changers, robotics, smart conveyors, and heavy bar loaders.

Key differentiator: The new UNE6-2i-CR operating system reduces new part setup times by 80% or more with integrated robotics.

Smallest hole demonstrated: < 0.040 inch (1 mm) in titanium for medical components.

Sunnen Products Company (BTA Heller Division) ​

Sunnen is the world's largest vertically integrated manufacturer of honing systems. The acquisition of BTA Heller (formerly American Heller, founded 1952 in Troy, Michigan) added deep hole drilling tooling and machines to Sunnen's bore finishing portfolio.

BTA Heller's product range includes:

• Deep hole drilling tools and inserts
• Pressure heads
• Vibration dampeners
• Boring bars
• Deep hole drilling and boring machines
• Diameter range: 0.5 to 36 inches (12.7–914 mm)

The strategic value of the acquisition: Sunnen can now offer a complete drill-to-finish solution — primary hole creation through BTA Heller tooling, followed by honing, skiving, and roller burnishing through Sunnen's core product lines. No other deep hole drilling company has Sunnen's global presence for technical and post-sale support, with offices in Europe, the UK, China, Brazil, and India.

STAR CUTTER Company ​

STAR CUTTER is a US-based manufacturer of gun drills and deep hole drilling tooling. The company is known for its troubleshooting guides and application support, serving the North American market with responsive service and standard and custom gun drill geometries.

Other US Manufacturers ​

United Kingdom: Mollart Engineering ​

Mollart Engineering is a world leader in deep hole drilling with over 95 years of engineering history. The company operates three divisions: deep hole drilling machines, tooling (manufactured under licence from botek), and subcontract precision machining.

Historical milestones:

• 1965: Developed its first gun drilling machine
• 1993: Began manufacturing Botek gun drills under licence in the UK
• 2008: Acquired Bencere Tooling (roller burnishing, deburring)
• 2011: Developed Accubore steerable gun drill technology
• 2018: Produced 4-spindle Omnisprint machine (500% drill feed increase)
• 2023: Machine tools business acquired by InCompass (US company)

Product range:

• Drillsprint Series: 2–25 mm diameter, up to 1,500 mm depth, 1–4 spindles
• BTA drilling machines: up to 50 mm in exotic materials
• Microdrilling machines: for fuel injection and medical applications
• Pellet die drilling machines: world leader, 450+ gun drilling spindles installed
• Total capability: 0.5 mm to 300 mm diameter, depths up to 3,000 mm

Mollart is ISO 9001:2015 and AS9100 accredited, with an ISO 6 Class 1,000 cleanroom facility for medical and semiconductor components.

Italian Manufacturers ​

IMSA S.r.l. ​

IMSA manufactures both deep hole drilling tools and machines, serving European and international markets. The company's product range includes BTA drill heads, gun drills, guide pads, and complete drilling systems.

Galbiati Group ​

Galbiati Group designs and builds deep hole drilling machines for large workpieces, particularly in the hydraulic cylinder and oil and gas sectors. The company offers BTA, gun drilling, and skiving and roller burnishing machines.

TechniDrill ​

TechniDrill provides both machines and tooling for deep hole drilling applications, serving European and global markets with a focus on practical, production-oriented solutions.

Japanese Manufacturers ​

BIG DAISHOWA Seiki Co., Ltd. ​

BIG DAISHOWA is a major Japanese cutting tool manufacturer whose product range includes deep hole drilling tooling. The company is known for high-precision toolholding systems and boring tools, with deep hole drills as part of its comprehensive portfolio.

SUGINO MACHINE LIMITED ​

Sugino is a Japanese manufacturer of gun drilling machines and high-pressure coolant systems. The company invented the Selfeeder pneumatic drilling unit and has since expanded into deep hole drilling. Sugino machines are known for compact design and are widely used in automotive and general manufacturing.

Indian Manufacturers ​

Precihole Machine Tools Pvt. Ltd. ​

Precihole is India's most complete deep hole drilling solution provider, offering gun drilling machines, BTA (STS) drilling machines, and hole finishing equipment.

Product lines:

• Gun drilling machines: single and multi-axis, Ø1 mm and up
• BVN Series BTA machines: BVN65, BVN100, BVN180, BVN250
• Trepanning, pull boring, counter boring
• Skiving and roller burnishing machines
• Honing and lapping equipment

Capability: Ø1 mm to Ø400 mm diameter, up to 12 m depth.

Key differentiators: Proprietary pressure head design, vibration dampening technology, multi-process machines that combine BTA drilling with counter boring, trepanning, and skiving on a single platform. Precihole emphasizes lower total cost compared to European and American competitors, making it an attractive option for cost-conscious operations.

Uttam Tools ​

Uttam Tools manufactures gun drills and BTA tooling for the Indian and export markets, competing primarily on price with established European tooling manufacturers.

South Korean Manufacturers ​

Shin-il Machinery Co., Ltd. ​

Shin-il manufactures deep hole drilling machines for the Asian market, serving automotive, mould, and general engineering sectors. The company provides both gun drilling and BTA systems with competitive pricing and regional service support.

Chinese Manufacturers ​

Dezhou Jutai Machine Tool Manufacturing Co., Ltd. ​

Dezhou Jutai is a leading Chinese manufacturer of CNC deep hole drilling machines. The city of Dezhou in Shandong province has become a cluster for deep hole drilling technology in China, hosting multiple manufacturers.

Product range:

• Deep hole drilling machines
• Deep hole boring machines
• Honing machines
• Skiving and roller burnishing machines
• Scraping and rolling machines

HONGJI Machine Tools ​

HONGJI is one of the Chinese manufacturers identified in global market reports as a significant player, particularly in the Asia-Pacific region. The company has recently released energy-efficient machine models to reduce power consumption.

Comparative Analysis ​

Manufacturer Selection Guide ​

Strength Comparison ​

Market Trends ​

Trend 1: Industry 4.0 and IoT Integration ​

Trend 2: Energy Efficiency ​

Trend 3: Coating Technology Advancement ​

DLC-coated guide pads, advanced PVD coatings (TiAlN, AlCrN), and ta-C (tetrahedral amorphous carbon) coatings are becoming standard offerings from tooling manufacturers. botek, TBT, and Gühring all offer coated tooling options for extended tool life.

Trend 4: Regional Manufacturing Shifts ​

China is forecast to be a key growth driver in the machinery segment. Asian manufacturers are increasingly competitive in quality while maintaining cost advantages. Indian manufacturers like Precihole are expanding their export presence to 20+ countries.

Trend 5: Multi-Process Machines ​

Manufacturers are increasingly offering machines that combine deep hole drilling with milling, turning, or finishing operations in a single setup. UNISIG's USC-M and TBT's BW series exemplify this trend, reducing part handling and improving overall accuracy.

FAQ ​

Q: Which company is the largest deep hole drilling tooling manufacturer? botek (Germany) is the world market leader in single-flute gun drills and the largest deep hole drilling tooling manufacturer, with approximately 750 employees and production facilities across Europe and Asia.

Q: Which company builds the best deep hole drilling machines? There is no single "best" manufacturer. TBT (Germany) is widely regarded as the technology leader for high-precision, high-automation applications. UNISIG (USA) leads in very deep holes (up to 30 m) and large-diameter BTA drilling. Precihole (India) offers the best value for cost-sensitive applications.

Q: What is the market size of the deep hole drilling industry? The tooling segment was approximately $60 million in 2023 (projected $87 million by 2030). The machinery segment was approximately $850 million (projected $1.28 billion by 2030).

Q: Are Chinese deep hole drilling manufacturers competitive? Yes. Chinese manufacturers, particularly those in Dezhou, Shandong province, offer significantly lower machine prices and are improving their quality. They are best suited for applications where the highest precision is not required.

Q: Which manufacturer has the best global support network? Sunnen (BTA Heller) has offices in Europe, the UK, China, Brazil, and India, supported by Sunnen's extensive global distribution network. TBT and botek also have strong international presence through subsidiaries and sales partners.

Q: What is the lead time for gun drills from major manufacturers? botek offers a stock program (Type 110) with 1–3 working day delivery for standard diameters. Custom tools typically require 2–6 weeks depending on complexity and manufacturer workload.

Q: Do any manufacturers offer both machines and tooling? Yes. TBT, Sunnen (BTA Heller), and Mollart offer both machines and tooling as integrated solutions. botek specializes exclusively in tooling. UNISIG also manufactures its own drill tubes, driver systems, and workholding equipment.

Q: Which manufacturer should I choose for small-diameter deep hole drilling (below 2 mm)? botek's Type 113 solid carbide gun drill (invented in 1982) is the industry standard for sub-2 mm deep hole drilling. For machines, TBT and Mollart offer micromachining capabilities.

Q: How has the market structure changed through acquisitions? Notable acquisitions include Sunnen's purchase of BTA Heller (2018), Mollart's acquisition of Bencere Tooling (2008), and Mollart's machine tool division being acquired by InCompass (2023). These acquisitions reflect consolidation trends as companies seek to offer more comprehensive solutions.

Q: What is the best way to select a manufacturer for a new deep hole drilling application? Start with the required hole diameter, depth, material, tolerance, and production volume. Then match against manufacturer specializations — botek for small-diameter tooling, TBT or UNISIG for deep-hole machines, Sunnen for drill-to-finish solutions, or Precihole for cost-sensitive production.