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DTR Corp. (formerly Dragon Precision Tools)
DTR offers a complete line of coarse pitch to fine pitch hobs including involute, worm, chain sprocket, timing pulley, serration, parallel spline or special tooth shape, shaper cutters and milling cutters for auto, aerospace, wind, mining, construction and other industrial gear cutting applications.

ESGI Tools Pvt. Ltd.
We introduce ourselves as the leading manufacturer & Exporters of gear cutting tools, including hobs, shaper cutters, shaving cutters, rack milling cutters, Coniflex bevel gear cutters, shaving cutters and master gears.

Gleason Cutting Tools Corporation
Wherever superior gear performance is needed -- from hand-held power tools to super tankers, from automobiles to aircraft -- Gleason Cutting Tools Corporation gear tools are at work, helping raise the standard of bevel and cylindrical gear manufacturing to levels unimaginable just a few years ago.

Star Cutter Co.
Headquartered in Farmington Hills, MI, StarCut Sales, Inc. is a wholly owned subsidiary of Star Cutter Company and is a partner in the Star SU LLC enterprise for marketing, sales, and service. Through Star SU and StarCut Sales, Inc.'s international organization Star Cutter Company markets and services its products in North America, South America, Europe and the Far East.

Star SU LLC
Star SU LLC provides the latest in gear and rotor manufacturing technology by offering a wide variety of gear cutting machinery, tools and services.

Steelmans Broaches Pvt. Ltd.
Manufacturers and Exporters of Push and Pull style Spline, Serration, Keyway, Surface, Standard Broaches and Broach Sets. We also manufacture Gear Hobs, Gear Cutters, Serration Cutters,Gear Shaper Cutter, Shaving Cutters , Milling Cutters....

Longevity Coatings
SETCO Precision Spindles

Articles About coatings


1 Hard Coatings on Contaminated Surfaces - A Case Study (January/February 1997)

Physical Vapor Deposited (PVD) coatings such as TiN (Titanium nitride) have been a boon for cutting tool manufacturers. They reduce wear and, therefore, extend tool life, which in turn reduces production costs. But PVD coatings are expensive, and when they fail, they cost both time and money, and they causes of the failure are not always readily apparent.

2 Influence of Coatings and Surface Improvements on the Lifetime of Gears (July/August 2004)

Surface coatings or finishing processes are the future technologies for improving the load carrying capacity of case hardened gears. With the help of basic tests, the influence of different coatings and finishing processes on efficiency and resistance to wear, scuffing, micropitting, and macropitting is examined.

3 Composite Electroless Nickel Coatings for the Gear Industry (January/February 1997)

Electroless Nickel (EN) plating, a process dating back to the 1940s, is one of the predominant metal finishing methods today. It is especially suitable for the gear industry, whose end uses span innumerable other industries, providing an endless assortment of requirements, environments, materials and specifications. EN plating has a broad array of functional features, which include:

4 The Lubrication of DLC Coated Gears with Environmentally Adapted Ester-Based Oil (July/August 2006)

A main limiting factor in extending the use of hard coatings to machine component application is the lack of knowledge about how these inert coatings perform under lubricated conditions using today's lubricants.

5 Hob Tool Life Technology Update (March/April 2009)

The method of cutting teeth on a cylindrical gear by the hobbing process has been in existence since the late 1800s. Advances have been made over the years in both the machines and the cutting tools used in the process. This paper will examine hob tool life and the many variables that affect it. The paper will cover the state-of-the-art cutting tool materials and coatings, hob tool design characteristics, process speeds and feeds, hob shifting strategies, wear characteristics, etc. The paper will also discuss the use of a common denominator method for evaluating hob tool life in terms of meters (or inches) per hob tooth as an alternative to tool life expressed in parts per sharpening.

6 Service Behavior of PVD-Coated Gearing Lubricated with Biodegradable Synthetic Ester Oils (January/February 2004)

The following article is concerned with the analysis of the wear-reducing effect of PVD-coatings in gearings. Standardized test methods are used, which under near-real conditions enable statements to be made about the different forms of damage and wear (micropitting, macropitting, scuffing).

7 Coated Gears Provide Slick Solution for Human-Powered Boat (January/February 1997)

Design Problem: Develop a gear drive for a pedal-powered water craft that will be easy to manufacture, use and maintain; that will be lightweight enough for the boat to be portable; and that will eliminate the environmental risk of lubricants leaking into the water.

8 Heavy-Duty Demands - Modern Coating Technology Examined (May 2013)

The hob is a perfect example of how a little manufacturing ingenuity can make a reliable, highly productive cutting tool. It's an engineering specimen that creates higher cutting speeds, better wear resistance and increases rigidity. The cutting tool alone, however, can't take all the credit for its resourcefulness. Advanced coating technology from companies like Sulzer, Oerlikon Balzers, Ionbond, Seco Tools and Cemecon helps improve cutting tools by reducing overall costs, increasing tool life and maintaining the highest levels of productivity. The following is a quick recap of new technologies and the latest information in the coating market.

9 Improved Ion Bond Recoating for the Gear Manufacturing Industry (January/February 1997)

This article summarizes the development of an improved titanium nitride (TiN) recoating process, which has, when compared to conventional recoat methods, demonstrated tool life increases of up to three times in performance testing of hobs and shaper cutters. This new coating process, called Super TiN, surpasses the performance of standard TiN recoating for machining gear components. Super TiN incorporates stripping, surface preparation, smooth coating techniques and polishing before and after recoating. The combination of these improvements to the recoating process is the key to its performance.

10 Wear Protection for Gears (March/April 1996)

Several trends in mechanical engineering are leading to greater surface stress on components and thus to unacceptable wear. These trends include greater stresses due to increased power densities; the need to maintain high precision of components throughout their service life; and the environmental imperative to reduce use of lubricants and additives.

11 Advantages of Titanium Nitride Coated Gear Tools (May/June 1984)

A brief introduction to the subject of Thin Film Coatings and their application to gear hobs and shaper cutters is followed by a detailed description of the Chemical Vapor Deposition Process and the Physical Vapor Deposition Process. Advantages and disadvantages of each of these processes is discussed. Emphasis is placed upon: application engineering of coated gear tools based on laboratory and field test results. Recommendations are suggested for tool design improvements and optimization of gear cutting operations using coated tools. Productivity improvements potentially available by properly utilizing coated tools are considered in terms of both tool cost and machining cost.

12 High Technology Hobs (January/February 1993)

Today's high technology hobs are visible different from their predecessors. Gear hobs have taken on a different appearance and function with present day technology and tool and material development. This article shows the newer products being offered today and the reasons for investigating their potential for use in today's modern gear hobbers, where cost reduction and higher productivity are wanted.

13 New Innovations in Hobbing - Part I (September/October 1994)

Prior to the introduction of titanium nitride to the cutting tool industry in the early 1980s, there was very little progress in the general application of hobbing in the gear cutting industry. The productivity gains realized with this new type of coating initiated a very active time of advancement in the gear manufacturing process.

14 New Innovations in Hobbing - Part II (November/December 1994)

The first part of this article, which ran in the September/October 1994 issue, explained the fundamentals of gear hobbing and some of the latest techniques, including methods of hob performance analysis and new tool configurations, being used to solve specific application problems. In this issue, the author continues his exploration of hobbing by describing the effects of progress on requirements in accuracy, as well as the latest in materials, coating and dry hobbing.

15 Myths and Miracles of Gear Coating (July/August 1999)

Three years ago, coated gears seemed to be the perfect solution for the Micro Marine Corporation. The early designs for the gear drive of their MicroCAT human-powered boat used a combination of thin-film dry gear coatings with lubrication and wear-resistance properties. These coatings simplified their design, provided corrosion resistance, made the gear drive environmentally safe and eliminated the need for gear drive lubrication and maintenance. It was a success story in the making.

16 Wanted, Custom-Made Machine Tools (August 2013)

The machine tool industry is as competitive as ever. New machine technologies, materials, coatings and software upgrades are changing the way gears are being manufactured. Companies like Gleason, Liebherr, Kapp/Niles and DMG/Mori Seiki spend plenty of time and resources on R&D to develop the best products for the gear market. More importantly, these companies engage with (and listen to) customer requests.

17 Cutting Tools Now (May/June 1996)

The cutting tool is basic to gear manufacturing. Whether it's a hob, broach, shaper cutter or EDM wire, not much gets done without it. And the mission of the tool remains the same as always; removing material as quickly, accurately and cost-effectively as possible. Progress in the field tends to be evolutionary, coming gradually over time, but recently, a confluence of emerging technologies and new customer demands has caused significant changes in the machines, the materials and the coatings that make cutting tools.

18 Spiral Bevel and Hypoid Gear Cutting Technology Update (July 2007)

Spiral bevel and hypoid gear cutting has changed significantly over the years. The machines, tools, processes and coatings have steadily advanced.

19 Full Speed Ahead (May 2012)

Indexable carbide insert (ICI) cutting tools continue to play a pivotal role in gear manufacturing. By offering higher cutting speeds, reduced cycle times, enhanced coatings, custom configurations and a diverse range of sizes and capabilities, ICI tools have proven invaluable for finishing and pre-grind applications. They continue to expand their unique capabilities and worth in the cutting tool market.

20 The New Freedoms: Bevel Blades (September/October 2007)

Today, because of reduced cost of coatings and quicker turnaround times, the idea of all-around coating on three-face-sharpened blades is again economically viable, allowing manufacturers greater freedoms in cutting blade parameters, including three-face-sharpened and even four-face-sharpened blades.

21 Selection of Hobbing Data (November/December 1987)

The art of gear hobbing has advanced dramatically since the development and introduction of unique machine and tool features such as no backlash, super rigidity, automatic loading of cutting tools, CNC controls, additional machine power and improved cutter materials and coatings. It is essential to utilize all these features to run the machine economically.

News Items About coatings

1 Advanced Coatings Provide Gear Cutting Edge (April 20, 2012)
Balinite Alcrona Pro, the second generation of ALCr-based coatings, is now available on new and re-sharpened tools from Star SU. Develope... Read News

2 Balzers Acquires Gold Star Coatings (March 20, 2006)
Balzers Inc. announced a cooperaion agreement to take over the PVD coating operations of Gold Star Coatings, a subsidiary of the industri... Read News

3 Gleason Expands Advanced Coatings Facility (January 27, 2011)
Gleason Corporation has announced a new investment to expand the Advanced Coatings Facility at its Gleason Cutting Tools Corporation (GCT... Read News

4 Morgan Advanced Ceramics Introduces New Coatings from the Racing Industry (August 14, 2007)
The Diamonex Products division of Morgan Advanced Ceramics (MAC) introduced its Diamonex® Diamond-like Coatings (DLC) for the pe... Read News