PRO-SERIES 1 X CAT 40 V-FLANGE SHELL END MILL ARBOR (3901-4257)

PRO-SERIES 1 X CAT 40 V-FLANGE SHELL END MILL ARBOR (3901-4257) (SKU: 3901-4257)

Pro-Series 1″ X CAT 40 V-Flange Shell End Mill Arbor

• For CNC machines with CAT 40 taper spindles
• Made of 20CrMnTi alloy steel
• Electrolysis nickel coating
• Balanced to 8,000 RPM
• Tolerance is .0002″ maximum
• Material is 42 CrMo
• Hardness is HRC 50
• 52
• Thread tolerance class is 4H
• Retention knob thread is 5/8-11

Specifications

• Pro-Series 1″ X CAT 40 V-Flange Shell End Mill Arbor
• For CNC machines with CAT 40 taper spindles.
• Made of 20CrMnTi alloy steel.
• Electrolysis nickel coating.
• Balanced to 8,000 RPM.
• Tolerance is .0002″ maximum.
• Material is 42 CrMo.
• Hardness is HRC 50~52.
• Thread tolerance class is 4H.
• Retention knob thread is 5/8-11.
• Weight: 3.2
• 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.