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Grinding Wheels

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PCD Or PCBN Reamers

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PCD End Mills

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PCD Drills

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PCD Inserts

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PCBN Inserts

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PCBN Shank Tools

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KJK Polydiamonds is a member of the KJK Group of Companies actively involved in supplying advanced technology products for the Automobile, Aerospace, Electronics and Machine Tool manufacturers. KJK is actively pursuing Globalisation in partnership with reliable companies around the world to cope up effectively with the many changes in the industry. The International connections of KJK have helped to secure a great number of valuable customers around the world and to obtain a reputation as a reliable supplier of quality PCD & PCBN tools. International exchanges in the cutting tool industry are gaining more speed with the discovery of new techniques. KJK is playing an active role in promoting international co-operation in the industry. Since 1982, we have been actively involved in manufacturing Poly Crystalline Diamond and Poly Crystalline Cubic Boron Nitride Cutting tools for machining operation in automobile, aviation, electronics and mechanical engineering sectors. The Company's aim is to remain as one of the world class leaders in PCD & PCBN tools manufacturing and a total tooling solutions provider with quality assurance and reliable on dot delivery , to all our customers around the World. Regrinding and re-tipping service are also available in our production centres at Chennai, INDIA.+ Read More

Nature of Business

Manufacturer

Year of Establishment

2009

Legal Status of Firm

Limited Company (Ltd./Pvt.Ltd.)

GST Number

33AACCK6327P1Z8

Grinding Wheels
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Grinding Wheels

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Small diameter vitrified / Resin bonded Diamond / PCBN wheels used for grinding and finishing the inside diameter (ID) of bores. Typically used on Jig grinders and Universal grinders, for hardened steel and super alloys internal grinding.

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PCD Or PCBN Reamers
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PCD Or PCBN Reamers

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KJK PCD reamers are successfully used in many automobile and engineering industries for the machining of aluminum and other non-ferrous metals. KJK PCD reamers are manufactured in diameters ranging from 3.0 to 200.0 millimeters with two or four flutes to suit the bore dimensions, tolerances and cutting geometries of the specific application.

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PCD End Mills
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PCD End Mills

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The automotive industry takes full advantage of KJK PCD / PCBN end Mills in machining silicon aluminum transmissions. Our unique "through-tool-coolant" PCD end mills work round-the-clock with no tool change downtime.
In the recent years, the aerospace industry is discovering the value of PCD's long life in the manufacture of aircraft components and are currently still attracting for use on modern machining equipments.
Particularly, the highly abrasive materials cause uncontrollable wear on the solid carbide milling cutters, resulting to distortions in geometry on forms or the required corner radii are not produced. In these cases, enormous potential of KJK PCD / PCBN end mills are demonstrated.
The PCD / PCBN end mill requirements exploded in the last 10 years as manufacturing process incorporated more and more mold and dies to improve productivity. This shift in manufacturing process triggered another race, which end mills can machine mold and dies faster.
KJK PCBN end mills machine the hardest mold and die material with finesse, and excels in machining at high speed in most commonly used materials.
KJK's dedicated engineers reach out, not only to provide end-mills, but also to develop machining technologies with all our demanding customers.
KJK cover all the requirements of today's mold and die industries need.
KJK offers PCD / PCBN end mills in straight flutes, helical flutes, profile forms, in straight shanks, Integral shanks and flange types.

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PCD Drills
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PCD Drills

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The benefits of machining non-ferrous materials with KJK PCD tools are well established for decades. However, applying KJK PCD technology to the drilling process has long been an objective for many of our customers. KJK's advanced technological innovations, has successfully developed unique PCD drills to the engineering industry's demand for precision drilling operations.
KJK PCD technology and expertise, offers PCD drills with sharp cutting edges in rigid carbide shanks to give the following advantages.
  • Runs without coolant 
  • Cutting edge stays sharper longer
  • Addresses the issues which have long been defeated.
  • Exceeds the expectations and technical challenges of modern machining 
  • Life is approximately 50 times the tungsten carbide
  • Meets tolerance requirements
  • Can drill to H8 tolerance and eliminates reaming
  • Increased machining parameters and consequent productivity ( 50-100%)
  • Vastly improved drill life
  • Improved drill hole surface finish
  • Greater tolerance control
  • Greatly reduces down time
  • Rugged construction 
  • Enables to handle difficult conditions
  • Increased drill speeds and feeds
  • Available in 5 - 13mm diameters
  • Standard lengths up to 200mm and others as per application
  • Designed for use on: very high silica aluminum, Fiber Reinforced Plastics, reinforced Ceramic Composites, Metal Matrix, composites & green carbide
  • Sharper cutting edge, improves wear and chip resistance
  • Available in straight and spiral flutes.
  • Made to customer specifications.

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PCD Inserts
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PCD Inserts

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KJK PCD Inserts are offered in standard and nonstandard or as per the drawings from the customers. The following shall give our customers, an idea to choose the standards Inserts.

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PCBN Inserts
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PCBN Inserts

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KJK manufactures a complete range of high quality Polycrystalline Cubic Boron Nitride (PCBN) Inserts for machining ferrous materials.
The combination of material, brazing and the high technologies used at KJK means that PCBN inserts are especially made for effective and efficient in high speed and accurate machining of hardened steel and cast iron.
PCBN Inserts has a hardness second only to diamond, has lower affinity to iron than diamond. The low affinity and high hardness properties means that KJK PCBN delivers significant increase in tool life, consistent surface finish, dimensional control, decrease in over all cost of the component, higher productivity and cost savings in total manufacturing operation.
The customers shall have an idea to choose any PCBN Inserts from our standard range of Inserts as detailed below, suitable for there purpose.

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Milling Cutters & Cartridges
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KJK manufactures cutter bodies in aluminum and steel in different diameters with 3, 6, 8, 10 and 12 cartridge configurations for face and shoulder and wiper milling. However, there is also a special CT-cartridge with 75° lead angle and 0.2 mm by 45° chamfer for semi-finish milling operations where the surface has to be prepared ready for a defined finish and flatness specification.
We are engaged in offering a range of Face Mill Arbor that is manufactured using quality engineering steel. These are considered to be perfect for high speed, safe and efficient milling, designed and fabricated as per ISO standards. These Face Mill Arbors find extensive application in conventional milling machines and CNC machining centers. These are manufactured in shorter version (Stub Milling Arbor) and longer version (Long Milling arbor).
By incorporating, very compact insert / cartridge into its latest multiple tooth milling cutter system is able to run at up to double the speed of a normal face mill due to the number of inserts it can carry maintaining the same rate of feed per tooth.
The Rotary Milling cutters are shipped complete with bodies, cartridges and wiper inserts.
The new cutters from KJK has high-precision body and the PCD cartridge special designs enable the customers to achieve high-cutting depth, required surface roughness and percentage of contact area.
The cutter body design also has a minimum number of separate components and utilizes high-precision stress-free friction clamping, giving a simple fine adjustment of each cutting edge for perfect "flat" running and minimal creation of rags or burrs.
KJK cutter bodies are mostly in aluminum and ranging in diameters from 63 mm with eight teeth to 125 mm with 16 teeth. The largest cutter can also be specified with an additional two teeth depending on the application. The positive interlocking of each PCD-cartridge unit requires a low-torque setting that prevents the cartridge moving on final tightening and ensures each cartridge unit is set to the same height, precisely.
KJK milling cutters are extensively used in automotive applications to produce joint faces on transmission housings, cylinder heads and crankcases as well as the milling of valve bodies where the high demands of surface finish with excellent predictable tool life contribute to higher spindle utilization with minimal downtime.
Three different variations are available with 45°, 60° and 90° lead angles and with a variety of inserts / cartridges.
Re-grinding and re-tipping service of PCD and PCBN cartridges are offered to all our customers.

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PCBN Shank Tools
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PCBN Shank Tools

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Most of the general machining areas in production requires shortest machining times meeting highest quality requirements.
KJK PCD and PCBN shanked tools effectively work in turning operation on most non-ferrous metals and highly abrasive non-metallic materials, including: Brass, Magnesium, Aluminum, Copper, Rubber, Columbium, Reinforced Plastics, Graphite, Ceramics, Wood, Fiberglass, and many composite materials and the life is much longer than that of carbide, etc.
Due to the long life, KJK PCD / PCBN shank tools are widely accepted in all industries and are very efficient in the large companies.
These tools are highly rigid with perfect geometries specially manufactured and supplied in standard and special sizes and specifications / drawings according to our customers need.
Re-grinding and re-tipping service is also offered to all our customers.

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PCD Or PCBN Bites
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PCD Or PCBN Bites

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Modern batch production is characterised by the shortest machining times and the highest quality requirements.
KJK offers PCD & PCBN Bites in standard and special geometries according to the users applications and requirements.
Suitable for many applications on ferrous and non-ferrous metals and highly abrasive non-metallic materials, including: Brass, Magnesium, Aluminum, Copper, Rubber, Columbium, Reinforced Plastics, Graphite, Ceramics, Wood, Fiberglass,and many composite materials and the life is much longer.
Due to high rigidity, special geometries and the long life, the PCD / PCBN Bites offered by KJK are widely accepted in all industries for many general and very special machining applications.
Re-grinding and re-tipping service is also offered to all our customers.

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PCD Or PCBN Micro Boring Tools
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To meet the demands of high precision boring and micro boring operations KJK offers excellent tools and solutions.
For the fine boring, tools are specially designed, manufactured and supplied by KJK, understanding the requirements and demands of today's Industry.
The tooling that KJK have engineered, excels in the areas demanded by the machinists to produce complete, accurate, high quality precision boring and micro boring of parts. Extreme rigidity, higher tool life, repeatability and easy of set up are just some of the best qualities that KJK Tools feature.
For very fine and precise small sized boring of holes, we manufacture and supply superior quality fine boring tools, which are easy to use for a wide range for boring from 10 to 80 mm diameters, within an accuracy of 10 microns.
KJK offers PCD / PCBN boring / microbore tools with cartridges of various sizes and dimensions, at economical prices.
Re-grinding and re-tipping service is also offered to all our customers.

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Grooving Tools
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Grooving Tools

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KJK offers the widest array of standard tooling and the broadest range of solutions for precision grooving, recessing, and internal and external facing and chamfering. High precision tooling is the corner stone of mechanical engineering enabling faster and more accurate production of machines and components for all the industrial branches.
KJK's presence with high technological innovations offers efficient and in expensive PCD and PCBN grooving tools for the world wide market for precision tooling. The main benefit of KJK series of grooving tools is comprised by its high precision and multi functional capabilities, reducing grooving time, increasing productivity as well as reducing through-put time with lower tooling costs.
KJK PCD and PCBN grooving tools are successfully used in many automobile and engineering industries for grooving / machining of aluminum and non-ferrous and ferrous metals. KJK grooving tools are offered in cutting widths ranging from 0.80 to 8.00 millimeters with carbide shanks. dimensions, tolerances and cutting geometries of the specific application.

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Wood Working Tools
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Wood Working Tools

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We take great pride in our customer-focused innovation and are pleased to provide high quality cutting tools with precision at an affordable price. With the unveiling of our PCD series, we're now ensuring that our customers can achieve the best results to save labor, time and money.
The Conventional tungsten carbide wood working tools, are becoming obsolete due to emergence of PCD tools offering high productivity and higher finish on the end product, reducing labor costs, time and money.
KJK manufactures and supplies high quality PCD Tools for wood working, giving major advantages such as high productivity, higher finish, reducing labor cost and saving time and money.
The high quality of KJK PCD tools significantly increases the life and are ideal for use in harder types of materials such as MDF and chipboards.
Re-grinding and re-tipping service is also provided to all our customers.

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Mono Crystaline Diamond Tools
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KJK Mono Crystalline Diamond (MKD) is a synthetic diamond out of pure carbon. These diamonds enable the production of geometric defined flutes with absolutely notch free. KJK Mono Crystalline Diamond (MKD) is suitable for achieving very high surface finishes, mirror bright surfaces, machining of non-ferrous materials, micro machining and machining of titanium without burr.
The KJK Mono Crystalline Diamond tool of the present invention is available for performing ultra precision machining on hard and brittle materials and a difficult-to-machining materials, or the like.
KJK offers Mono Crystalline Diamond cutting tools to perform ultra precision machining of hard and brittle materials with good swarf discharge and reduced cutting resistance to improve precision in cutting surface and less wear or micro chipping of a cutting edge, thus achieving long life.

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Diamond Dressers
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Diamond Dressers

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In the last few decades, single point diamond dressers have, undoubtedly, emerged as the most widely used diamond dressing tools. The prime reason for the popularity of these tools is the versatility offered by them, as they can be used for truing as well as dressing of grinding wheels.

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HSK Tool Holders & Adaptors
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"HSK" is the German abbreviation for "hollow taper shank. HSK shanks must be connected to machines via compatible HSK spindle receivers. Whereas steep-taper shanks were developed prior to standardization, HSK shanks were developed to address performance problems associated with the traditional interfaces, particularly in high speed machining applications.
The shank styles are designated by the letters A through F identified by the diameter of the shank's flange in millimeters. Styles A, B, C, and D are for low-speed applications. E and F are for high speeds. The main differences between the styles are the positions of the drive slots, gripper-location slots, coolant holes, and the area of the flange. Each style was defined for certain applications. It is critical that the proper type of HSK tooling be specified on high-speed machine tools, not just the correct size.
These holders are dynamically balanced, to give good results in machining. For high speed machining and to provide good rigidity to the tools, we offer integral reamers with HSK 50, HSK 63, HSK 80 and HSK 100 series shanks. These can be directly clamped on to spindle and there is no separate setting time is needed.
These are supplied with high accuracy, to help our customers to achieve highest dimensional accuracy in their components, even if the machine spindle is having a run out,
The compensation holders also supplied by KJK to hold the flange reamers. The BT and BBT with KAH 63 and KAH 81 (KAH are KJK adjustable holders), HSK A50 and HSK A63 with KAH63 and KAH81 holders are supplied based on the applications.

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