1. TOP
  2. Punching Tools
  3. BK Burring Tool

BK Burring Tool

BK Burring
バリ潰しBK Burring Tool

Features & Specification

  • Burr-less Extrusion Work
  • Tapping Burrs (Extrusion Burrs) Removal Work Elimination
  • Product Value Improvement

Specification

Tool Type Form-up two- hit Form-down two-hit
Tool Size Bst:1 1/4”
Material Mild Steel / Aluminum (Stainless: up to 1.2mm)
Thickness 0.8mm~1.6mm 0.8mm~2.3mm
Die Height 35.5mm 30.0mm

BK Burring Pre-hole Inner Diameter
(Mild Steel・Aluminum・Stainless)

Tap Type Tap size M2.6 M3 M4 M5 M6*
Forming
Tap
Extrusion Inner Dia.  φ2.37 φ2.75 φ3.65 φ4.60 φ5.5
Pre-hole Inner Dia.  φ1.3 φ1.6 φ2.0 φ2.5 φ3.0
Cutting
Tap
Extrusion Inner Dia.  φ2.21 φ2.57 φ3.40 φ4.30 φ5.10
Pre-hole Inner Dia.  φ1.3 φ1.6 φ2.0 φ2.5 φ3.0

※ Inner diameter of “Tapping Tool for M6” / “Burring Tool for M6 Forming Multi-Tap” is φ5.55.

※ BK Burring Tool is only two-hit type. Pre-hole diameter is specified by AMADA.

※ Extrusion height can not be altered because the diameter value of the pre-hole are fixed.