Product Description
Milwaukee Guide Plate for 1-3/4 in. Thick Wall Core Bit
Model Number: 48-20-5169
The Milwaukee 48-20-5169 is a Guide Plate for Milwaukee 1-3/4 in. Thick Wall Diamond Core Bits — a precision drilling alignment attachment that improves hole location accuracy during the initial bit engagement phase of 1-3/4 in. thick wall core drilling operations in concrete and masonry. The guide plate provides a stable reference surface and centering geometry that aligns the thick wall core bit to the marked hole center before drilling begins, preventing the bit walking and lateral drift that occurs when a spinning core bit's large-diameter diamond segments first contact a hard concrete surface without a guide. The 1-3/4 in. specification matches the outer barrel diameter of Milwaukee 1-3/4 in. thick wall diamond core bits — the guide plate's bore is dimensionally matched to the correct core bit barrel size for proper engagement and concentrically accurate guidance throughout the initial engagement phase of the drilling operation before the bit establishes its own position in the concrete kerf.
Guide plates are particularly valuable at the thick wall core bit level where the increased barrel wall thickness and diamond segment mass make the bit heavier and more prone to initial positional drift than thin wall bits of the same diameter, and where the professional installation applications — large conduit sleeves, structural penetrations, mechanical equipment connections — demand hole position accuracy that cannot easily be corrected if the initial engagement places the hole off-center from the intended location. For overhead drilling where gravity contributes to positional drift, for horizontal drilling in concrete walls where the bit must start perpendicular to the wall face, and for any template-guided or layout-specified hole placement where position accuracy determines installation quality, the guide plate provides a meaningful accuracy improvement in the critical initial engagement phase of core drilling. Milwaukee offers guide plates across multiple sizes matching other thick wall and thin wall core bit diameters.
See Milwaukee's complete core drilling accessory lineup for guide plates in all available sizes and for adapters and extensions that complete the Milwaukee core drilling system.
Features
- Precision guide for accurate hole positioning with Milwaukee 1-3/4 in. thick wall core bits
- Prevents bit walking and positional drift on hard concrete during initial engagement
- Dimensionally matched to 1-3/4 in. thick wall core bit barrel for concentric guidance
- Most valuable for overhead drilling, perpendicular wall penetrations, and template-located holes
- Guide plates available for other Milwaukee thick wall and thin wall core bit sizes
Specifications
- Compatible Bit: Milwaukee 1-3/4 in. Thick Wall Diamond Core Bit
- Application: Concrete and Masonry Core Drilling Alignment
Includes
- (1) Milwaukee 48-20-5169 Guide Plate for 1-3/4 in. Thick Wall Core Bit
