4mm Ball-End Rotary Burr, 50mm Length, S6 Shank – Precision Internal Profiling Tool

Brief Overview

This 4mm ball-end rotary burr is a single-piece precision cutting tool designed for internal profiling, corner radiusing, and finishing operations in tool production and precision machining. The spherical fluted head delivers smooth surface finishes on workpieces with complex internal geometries. For applications requiring larger cutting areas, consider 6mm ball-end rotary burrs or specialty rotary cutters in alternative profiles for expanded capability across your shop's production line.

Key Features

• Spherical Cutting Head: Multi-fluted ball geometry eliminates sharp edges and reduces chatter, enabling smooth finishing in confined internal spaces
• Smooth Surface Finish: Produces consistently fine surface quality on workpieces—essential for tool production and precision assembly applications
• Single-Piece Construction: Polished metallic shank and head ensure durability and corrosion resistance during extended use
• S6 Collet Compatibility: Direct integration with standard 6mm collet systems across rotary tool platforms
• Compact 50mm Overall Length: Optimized for accessibility in tool cavities and internal corner work without excessive overhang

Business Advantages for Resellers

• High Margin Tool Category: Rotary burrs command strong gross margins due to their precision manufacturing and targeted professional applications
• Essential Consumable Replacement: Tool production and precision shops require regular stock replenishment, creating predictable bulk order cycles
• Complete Size Range Available: Cross-sell opportunities with larger 6mm and 12mm variants allow upselling to customers working across multiple production scales
• Professional Finish Quality: Reputation for superior surface finish builds customer loyalty and differentiates your inventory from competitor offerings
• Consistent Demand: Essential in tool rooms, prototype shops, and precision assembly—markets with stable, recurring procurement needs

Technical Specifications

Specification	Value
Head Diameter (d1)	3 mm
Head Length (L1)	50 mm
Shank Diameter (d2)	6 mm
Overall Length (L2)	50 mm
Shank Type	S6 Collet
Head Profile	Ball-End (Spherical)
Construction	Single-Piece Metal, Polished

Ideal Applications

• Tool Production: Internal profiling and finishing of complex tool geometries
• Precision Machining: Cavity finishing, corner radiusing, and internal edge deburring
• Prototype Development: Fine finishing work in one-off and small-batch production
• CNC and Rotary Tool Operations: Compatible with standard 6mm collet-based systems

Call to Value

Stock this precision rotary burr for immediate access to a high-demand finishing tool. The compact 4mm head addresses internal cavity work that larger tools cannot reach, while the consistent smooth finish reduces secondary finishing labor. Pair with complementary rotary cutter profiles to build a complete internal finishing capability that customers will return to repeatedly.