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Product Overview

For over 50 years LINK has been a hallmark of cutting tool quality for centerdrills, combination drills and countersinks. Link Industries offers a proprietary flute form that facilitates a smooth and easy chip flow minimizing heat generation and subsequent chip buildup. The LINK Unidapt System offers extended tool length in combination with generic, low cost tool inserts to improve work efficiency and operational costs. To optimize the machining operation, LINK offers a variety of tip forms designed to suit each application with optimal hole contour. LINK also manufactures a wide range of custom high-speed drills.
 

ST Type Centerdrill
Hey Drill Type ST

This is our standard drill type which is used for a wide range of general centering and spotting applications of the work piece. This drill type is ideal for centering parts to be turned between centers. It features a 118° tip angle and a single taper of 60° between the tip diameter and the shank diameter.
 

R Type Radial Centerdrill

The R Type Radial Centerdrill is used where the most precise centering applications are required. The sweeping curved contour of the Type R drill provides an increased cross-sectional area that is directly related to the depth of the cut and the resulting tool force. The tip angle is 134°.
 

S Type Centerdrill
B Type Centerdrill
Hey Drill B Type Bell

The S and B Type Centerdrills are dual-purpose drills used for the heaviest duty burnishing and chamfering applications. The drills have a smoothly blended 60° chord-curve band design, followed by an 82° flare for the S Type and a 120° flare for the B Type. The preformed 60° band produces a preformed protected band. The flares give the tools their dual-purpose capabilities as well as a fatigue strength equivalent to the R Type Radial Centerdrill. The S and B Type Centerdrills produce a preformed band ample to support the heaviest parts. The flare automatically results in a safety center that is easily lubricated.
 

Counterbores
     English
     Metric
Countersinks
     English
     Metric

LINK Counterbores and Countersinks are available with a straight shank for standard chucking or use with collet holders in both Metric and English sizes. The LINK Counterbore is designed to drill and to provide clearance for a socket head cap screw in a single operation. The LINK Countersink is specially formed to match the contour of a flat or oval headed screw. 
 

Coatings
 
LINK offers several special coatings for our complete range of tools to improve cutting efficiency and to extend tool life. Following is a list of coatings, which may be requested along with your tool order. These coatings are an engineered part of each tool, and provisions are taken to assure quality and workmanship is retained. LINK would be pleased to recommend the coating best suited for your specific machining application. 
 

LINK Drills are manufactured from the finest U.S. tools steels. Drills are engineered to combine the appropriate drill form with the optimal material to precisely  suit each application. The normally available materials are specified with the corresponding hardness values. Special materials and material hardness's are available to suit unique machining applications.
 

Tolerances

LINK Centerdrills , Combination Drills and Countersinks are manufactured to the most demanding standards to assure consistency and repeatability drill after drill. The following is a list of tolerances corresponding to the applicable decimal precision.

Markings

 All LINK tools are delivered with the LINK Logo and the machine size identity. Special and custom logos or markings are available and may be quoted for each application.

Gauge Rings

LINK Centerdrills and combination drill and Countersinks offer the unique feature of Gauge Rings, which are positioned a precise distance from the tip of selected drills. Inserting a Snap Ring, allows hold depths to be controlled and repeated in a production environment.

Warning

Any cutting tool may break or shatter under improper use. Government Regulations require use of safety glasses and other appropriate safety equipment at all times in the vicinity of their use. 

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Information presented in this brochure is for informational purposes only. Link Industries reserves the right to make changes, alterations and substitutions to the products, services or other information presented in
this brochure without prior notice. For the latest information contact Link Industries.

Equipment pictured in this brochure may be shown with safety equipment removed or disabled for purposes of illustration.  Equipment must never be operated with safety equipment removed or disabled.
 

To Order Call 1-800-626-9460