Frei & Borel Co.
Quality Jewelry Supplies for Generations - Since 1930
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Drill Press & Drills

Bergeon Pivot Drills
Tool Steel

Tool steel refers to a variety of carbon and alloy steels that are particularly well-suited to be made into tools. Their suitability comes from their distinctive toughness, resistance to abrasion, their ability to hold a cutting edge, and/or their resistance to deformation at elevated temperatures (red-hardness). High speed steel (often abbreviated HSS) is a material usually used in the manufacture of machine tool bits and other cutters. It is often used in power saw blades and drill bits. It is superior to the older high carbon steel tools used extensively through the 1940s in that it can withstand higher temperatures without losing its temper (hardness). This property allows HSS to cut faster than high carbon steel, hence the name high speed steel. At room temperature HSS and high carbon steel have an equivalent hardness; only at elevated temperatures does HSS become advantageous. Bergeon only offers Tool Steel Pivot Drills and one reason for this is this is HSS would cost about 3 times more while the main reason has been that when working on watches Tool Steel works well and HSS is not needed.

   

Bergeon Assortment of 12 End-Mill, in Hard Metal, with Interchangeable Pivots

All the pivots of the assortment are interchangeable between themselves for end-mill number 1 to 12 plus 16 and number 13 to 15. Use with broach 30007-C that is included. Conical shank 2%. Delivered in wooden case.

BERG-30007-MD
$1,265.00

 

   

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www.ofrei.com
Otto Frei and Jules Borel, Inc.
Customers Entrance
126 2nd St. Oakland, California 94607
Mailing Address: PO BOX 796, Oakland Ca. 94604
Freight Shipment Address: 119 3rd St. Oakland Ca. 94607 USA


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