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About KLR Industries
Founded in 1985, KLR is a solution provider for drilling industries. We are leading manufacturer of Rigs, DTH Bits, Hammers, Tri Cone Bits, Drill pipes, custom drilling tools and accessories. We service for all drilling segments like geothermal, water well, construction, and mining


KLR means Quality. We pride ourselves on the quality of our process and product.
Our Quality Motto “Customer Delight


We believe in providing best services to our customers on time and every time.


We can make anything for drilling industry right from custom made rig, bit or drill pipes.

KLR Rock Bits – Feel the difference with “Tejas Roller Cone Bits”

As a leading manufacturer and global supplier to drilling industries, we are proud to introduce our new series of rock drill bits. Innovative “Tejas Roller Cone Bits” can be operated at elevated rotary speed and higher weight on bit.
Mr. Laxma Reddy, founder CMD,  explains that " KLR’s growth has come from three prone approach which are - Product Development, Capacity Enhancement, Process Improvements. In short there is always innovation and continuous improvement to provide better quality and services to our, “ever increasing customer base”.

We have a state of the art manufacturing and development facility where rock roller bits are designed using high end modeling software and manufactured using.  Bits are designed for taking higher loads and to have excellent penetration rate for any formation.
 Bits are available in form of milled tooth and tungsten carbide insert bits.
Bit size ranges from 2 ½” to 12 ¼”

Tejas Rock Bit

Key features that needs to considered for right selection cum optimum performance of rock bits are
1. Cutting Structure
2. Bearing Design
3. Shirttail Protection
4. Gage protection
5. Air circulation system
6. Carbide insert profiles

Design of Cutting Structure

Design of Cutting Structure 1. Insert/Tooth
    a. Shape
    b. Size
    c. Projection
    d. Grip length
    e. Spacing width
    f. Number of inserts
    g. Carbide Grade
2. Number of rows
3. Bearing offset
4. Intermesh groove clearance
Cutting structure are designed for optimum results in the field, by eliminating tracking and off center rotation and also to provide a fast rate of penetration, high durability and long bit life. Bearing Design There are two basic bearing design used in construction of air bearing rock roller bit.  
1. Roller Friction Ball Bearing
2. Double Roller Ball Bearing
Bearing Design

Shirttail Protection

To protect the shirttail under high abrasive applications, extremely wear resistant hard metal is applied  on leading edge and tungsten carbide are added to protect the leg wear. customized shirttail layout is decided based on drilling condition.

1. Only Shirttail hard facing
2. Combination of shirttail hard facing and shirttail Inserts
Shirttail Protection

Gage Protection
Bit gage and heel area is well protected with wear resistant gage insert. Gage inserts are strategically placed on gage surface of the cone and are extended out from steel surface to assist the heel row  and also trim the bore hole wall to maintain full gage hole. In abrasive application where gage rounding takes place double gage is used.

1. Single gage
2. Double gage
Gage Protection

Air Circulation System

Air Circulation System Importance of air circulation system is to clean the hole, cool the bearing and carry the cutting out. Air pressure is critical for bottom hole cleaning. Pressure drop across the bits should be maintain a excess of  30 psi. General thumb rule is for every 100 feet depth there will be 10 psi of pressure loss. For optimum bit life nozzle should be selected to hold the pressure near maximum.
In order for the drill bit to perform at its best and have excellent rate of penetration always the bottom of hole should be clean. Air velocity is one which moves the cutting out from the bottom. General thumb rule is a velocity between 5000 to 8000 feet per minute is optimum for cleaning the hole.
From simple formula Q=AV, we can determine what volume of air (Q) is necessary to give desired velocity (V) for given annular area (A)

Nozzle configuration is such that the air is directed between the cones towards the corner of bore wall and bottom of hole. With this configuration all energy is focused directly on formation and cleans the gage and multiple inner rows of the cone.
Air tube configuration is such that is supplies equal volume of air to bearing for cooling.
Carbide Insert Profile

Carbide insert profile designed by exploding individual attributes like bottom profile, Top profile,  profile shape, grip length, projection, various radii and angles. Each attribute is tested and fine tuned to give the best drilling result with minimum insert breakage and wear.  Proprietary insert grades are used for higher durability, aggressive cutting, reduce the cone shell erosion and keeps the bit for longer runs.
Tougher and wear resistant insert are designed such that maximum material removal rate attained per revolution of tooth to achieve higher penetration rate.

Different sample Profiles
Different sample Profiles
Serrated,Ogive,Wedge chisel

For Enquiry Please Contact
Mr. Sri Ram, Marketing
Cell no. +91 9392017837

Drilling Today Contact