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HHIP 3902 3070 Piece Expanding Mandrel Review

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Excellent

Revainrating 5 out of 5  
Rating 
5.0
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Description of HHIP 3902 3070 Piece Expanding Mandrel

Made of 64Mn high grade tool steel. Precision ground and heat treated for maximum concentricity and holding power. Center holes are ground and lapped. The automatic expansion feature can be utilized on any bore (standard or no-standard) within the range of the mandrel. Arbors are tapered, sleeves are flexible and Size is obtained by moving sleeve along arbor.

Reviews

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Type of review

Revainrating 5 out of 5

Very good sleeve style expander mandrel for all your spinning needs

This is an expander mandrel. Good surface hardness, unaffected when used with annealed 4140 steel. Holds well and squarely in machined holes. got a job for me The best advice is to move between centers with the dog. There isn't much open ending to cling to. Between centers with little threading, I got <0.001 TIR on the part I machined with it. Good enough for my needs.

Pros
  • Rods
Cons
  • No power