10 PIECE 1/2 TO 1″ EXPANDING MANDREL SET (3902-3070) (SKU: 3902-3070)
10 Piece 1/2 to 1″ Expanding Mandrel Set
- Made of 64Mn high grade tool steel
- Precision ground and heat treated for maximum concentricity and holding power
- Arbor hardness is HRC55-60 and sleeve is HRC44-48
- Center holes are ground and lapped
- The automatic expansion feature can be utilized on any bore (standard or non-standard) within the range of the mandrel
- Arbors are tapered and sleeves are flexible
- Size is obtained by moving the sleeve along the arbor
- Set has 5 expanding sleeves and five mandrels
Specifications
- 10 Piece 1/2 to 1″ Expanding Mandrel Set
- Center holes are ground and lapped.
- Made of 64Mn high grade tool steel.
- Precision ground and heat treated for maximum concentricity and holding power.
- Size is obtained by moving the sleeve along the arbor.
- Arbors are tapered and sleeves are flexible.
- The automatic expansion feature can be utilized on any bore (standard or non-standard) within the range of the mandrel.
- Set has 5 expanding sleeves and five mandrels.
- Arbor hardness is HRC55-60 and sleeve is HRC44-48.
- Weight: 3.1
- Dimensions: L 4, W 8, H 4
Benefits
- Industrial-grade tooling designed for dependable shop performance.
- Supports consistent results when applied with correct setup practices.
- A practical choice for U.S. machine shops and maintenance work.
Recommended use
- Confirm compatibility (size, interface, machine capacity) before ordering.
- Follow safe operating practices and use appropriate PPE.
- Optimize setup rigidity and process parameters for best results.
USA Warehouse Stock — Fast U.S. fulfillment.










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