Master shanks

For every job Wohlhaupter has just the right connecting component. Master shank connections between the machine tool and the MultiBore modular components are supplied for all machines. The MultiBore boring tools fit straight into the master shanks or can be fitted with intermediate modules to make up a complete tool suitable for the component being machined. Wohlhaupter master shanks equipped with the following MVS connecting components are available to meet the different machine requirements:

  • MVS 50-28 preferably for SK 40/HSK-A50 machines up to a boring diameter range of 83 mm 
  • MVS 63-36 for machines bigger than SK 40/HSK-A50 
  • MVS 80-36 up to 205 mm boring range 
  • MVS 100-56 preferably from 200 mm boring range upwards 

Connection D40 / D60: For short overhangs and high torque transfers above 200 mm boring range. Each master shank with the MVS connection is supplied with the corresponding threaded taper pins. Shanks for a D 60 flange connection similar to DIN 6357 are supplied with T-bolts fitted and no M 16 pull studs. 

HSK master shanks for the Wohlhaupter MultiBore range offer you many benefits which include:

  • High level of accuracy when repeating or making a replacement
  • Quick replacement times
  • High static and dynamic rigidity
  • Safe machining at high speed
  • With standard balancing 

Position of the tool edge 

Field of application: machine tools 

German standard DIN 69893 (tapered hollow shanks Part 1, Form A and Form C) defines the position of the tool edge in single-edged cutting tools as right-hand versions. 
Based on this specification relating to the driving slots, every deviating edge position is expressed at Wohlhaupter in clockwise angular dimensions.
In principle, the cutting edge position should be checked before any tool application, and with orders for special tools and special clamping devices must be approved in writing by the user.

Downloads / Catalogues

Chapter A Master shanks
 Accessories / Spare parts / Service keys
Accessories / Spare parts
General accessories

DIN 69 893 HSK

DIN 69 871-AD / B -D


DIN 2080


Order-No. (Metric)Description

Master shanks with Polygon shaft

DIN 228 A/2207, DIN 1806 Morse tapers