RUKO KEB-HM Weldon opsteekfreesdorn 28,0 mm boring, DIN 1835 B

Precision-ground Weldon shell end mill holder with 28.0 mm bore, delivering <0.003 mm concentricity and G2.5 balance at 25,000 rpm for high-speed milling.

Overview

The RUKO GMBH KEB-HM-Weldon-28,0mm is a shell end mill holder engineered for milling machines and machining centers. It features a Weldon clamping system per DIN 1835 B, with a 28.0 mm cutter bore diameter and a 25.0 mm cylindrical shank with Weldon flat. The holder is made from high-alloy tool steel, hardened to HRC 58 ± 2, and precision ground for superior surface finish. External coolant supply is supported.

What stands out

• Exceptional concentricity of less than 0.003 mm ensures accurate tool rotation and superior surface quality.
• Balancing grade G2.5 at 25,000 rpm allows high-speed operation with minimal vibration.
• Hardened to HRC 58 ± 2 for long service life under demanding milling conditions.
• Compatible with shell end mills having cross keyway per DIN 1880.

Technical details

• Product type: Shell end mill holder
• Clamping system: Weldon (DIN 1835 B)
• Cutter bore diameter (d1): 28.0 mm
• Shank diameter (d2): 25.0 mm
• Overall length (L): 63 mm
• Clamping screw thread: M12
• Material: High-alloy tool steel
• Hardness: HRC 58 ± 2
• Concentricity: < 0.003 mm
• Balancing grade: G2.5 at 25,000 rpm
• Application: For shell end mills with cross keyway (DIN 1880)
• Coolant supply: External
• Surface finish: Precision ground
• Manufacturing standard: DIN EN ISO 9001

Our verdict

This holder combines high precision and robust construction, making it a reliable choice for professional milling operations.