Product Description
Milwaukee SDS Max and Spline Center Pin for Thick Wall Core Bits
Model Number: 48-20-5199
The Milwaukee 48-20-5199 is a Center Pin for use with Milwaukee SDS Max and Spline thick wall diamond core bits — a precision centering component that ensures accurate hole location during the initial engagement phase of large-diameter core drilling operations on concrete masonry and concrete structures. The center pin inserts through the center of the thick wall core bit barrel and extends beyond the diamond segment cutting face — when the core bit is positioned at the marked hole center and the drill begins to advance, the center pin engages the concrete surface at the exact intended center point before the larger diamond segment face contacts the material, establishing the bit's rotational axis at the precise hole location and preventing the bit walking and lateral drift that occurs when a large spinning core bit's diamond segments first contact hard concrete without a centering guide.
Accurate hole placement is especially important with thick wall core bits at large diameters — the larger the core bit diameter, the greater the area of concrete affected by a positional error, and the more costly and difficult it is to correct an off-center hole after it has been drilled. The SDS Max and Spline shank interface on this center pin makes it compatible with the thick wall core bit adapter systems that use these shank formats for mounting on SDS Max rotary hammers, Spline demolition hammers, and dedicated core drilling equipment, providing the centering accuracy benefit across the range of large-diameter thick wall core drilling platforms that Milwaukee supports with this adapter system. Remove the center pin from the bit after the diamond segments have established their cutting kerf position in the concrete — typically after the bit has advanced an inch or more into the material and the segments are fully guiding the bit's position.
See Milwaukee's complete thick wall core bit and core drilling accessory lineup for guide plates, adapters, and extensions compatible with Milwaukee SDS Max and Spline core drilling systems.
Features
- Center pin for accurate hole location with SDS Max and Spline thick wall core bits
- Prevents bit walking during initial engagement on hard concrete and masonry surfaces
- Compatible with Milwaukee SDS Max and Spline thick wall core bit adapter systems
- Remove pin after diamond segments establish cutting kerf in the concrete surface
- Prevents costly off-center holes at large diameters where errors are hardest to correct
Specifications
- Type: Core Bit Center Pin
- Compatible Bits: Milwaukee SDS Max and Spline Thick Wall Diamond Core Bits
- Application: Concrete and Masonry Core Drilling Centering Accuracy
Includes
- (1) Milwaukee 48-20-5199 SDS Max and Spline Center Pin
