Expanding mandrels are the ideal solution to many workholding problems. By holding parts on most of the datum bore (or outside diameter in the case of a collet chuck) the clamping forces are evenly distributed, reducing distortions during part manufacture.
Mandrels also provide a superior method of holding parts which are high volume, have short cycle times or require the highest levels of concentricity.
Craftsman manufacture expanding mandrels tailored to your exact specifications. Many different mounting styles are available, including: spindle nose, between centres, Morse taper and faceplate. Different actuation methods can be used, such as drawbar, cantilever nut and front nut.
Every expanding mandrel or collet chuck supplied by Craftsman can have the following features:
Single taper sleeves
Positive clamping and release
High levels of concentricity – to 0.005 T.I.R
Controlled datums
Sleeve interchangeability
Generous expansion capacities
All of the above permit quick and secure clamping creating versatility and ease of use.
