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The SDS bit was developed by Bosch in 1975 improving on the TE system introduced by Hilti in 1960. Hilti's original 10 mm TE-D and 18 mm TE-F shanks can be used in SDS-plus and SDS-max chucks respectively but not vice versa while the newer TE-C, TE-T and TE-Y are fully compatible. The SDS name is an acronym of German: Steck – Dreh – Sitzt!
Hilti Corporation (Hilti Aktiengesellschaft or Hilti AG, also known as Hilti Group) is a Liechtensteiner multinational company that develops, manufactures, and markets products for the construction, building maintenance, energy and manufacturing industries, mainly to the professional end-user.
Twist drill bits are available in standard lengths, referred to as Stub-length or Screw-Machine-length (short), the extremely common Jobber-length (medium), and Taper-length or Long-Series (long). Most drill bits for consumer use have straight shanks. For heavy duty drilling in industry, bits with tapered shanks are sometimes used. Other types ...
Drill bits of the less routinely used sizes, such as 2.55 mm, would have to be ordered from a specialist drill bit supplier. This subsetting of standard sizes is in contrast to general practice with number gauge drill bits, where it is rare to find a set on the market which does not contain every gauge. There are also Renard series sequences of ...
Below is a comprehensive drill and tap size chart for all drills and taps: Inch, imperial, and metric, up to 36.5 millimetres (1.44 in) in diameter. In manufactured parts, holes with female screw threads are often needed; they accept male screws to facilitate the building and fastening of a finished assembly.
This included the drill bit (well) and tool joint product lines critical for oil and gas drilling, some of the first technologies for ram blast bits for drilling in mines, geothermal drilling, and a hydraulic powered jackhammer known as the Hughes Impactor. [7]
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