Studio shot of the Bosch HC88 centering pin for SDS-max core bits, featuring a carbide tip and a spiral flute design on a white background.
Studio arrangement of various Bosch concrete drilling accessories including a large SDS-max core bit with the HC88 centering pin installed, alongside other bits on a concrete block.
Action shot of a worker in an industrial setting using a large blue Bosch rotary hammer equipped with a core bit and centering pin to drill into a concrete floor.
Close-up action shot of a core bit with the centering pin effectively drilling into a concrete slab, creating dust and debris.
Studio shot of the Bosch HC88 centering pin for SDS-max core bits, featuring a carbide tip and a spiral flute design on a white background.
Studio shot of the Bosch HC88 centering pin for SDS-max core bits, featuring a carbide tip and a spiral flute design on a white background.
Studio arrangement of various Bosch concrete drilling accessories including a large SDS-max core bit with the HC88 centering pin installed, alongside other bits on a concrete block.
Action shot of a worker in an industrial setting using a large blue Bosch rotary hammer equipped with a core bit and centering pin to drill into a concrete floor.
Close-up action shot of a core bit with the centering pin effectively drilling into a concrete slab, creating dust and debris.
Studio shot of the Bosch HC88 centering pin for SDS-max core bits, featuring a carbide tip and a spiral flute design on a white background.
BOSCH

Bosch Centering Bit HC88 5-5/16 Inch SDS Max Replacement Core Center Pin (Carbide Tipped Wave Design Concrete Masonry Pilot Hole Alignment Securement)

In stock
SKU: HC88
$14.69 USD

Description

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Industrial 5-5/16-Inch Carbide-Tipped Centering Pilot Pin for SDS-Max Rotary Hammer Core Bits and Wave Design Aggregate Core Alignment

The Bosch HC88 5-5/16 Inch Replacement Center Pin for SDS-max Rotary Hammer Core Bits Carbide Tipped delivers specialized masonry pilot hole alignment utility and exceptional aggregate cutting efficiency across demanding heavy commercial building excavations, industrial concrete utility rough-ins, and complex foundation pipe path retrofits. Engineered with a premium power-hardened tool alloy frame topped natively with a custom-ground industrial carbide centering matrix tip, this high-performance layout tool accessory anchors heavy rotating core cups straight to prevent wandering and structural tool binding failures. This professional contractor solution resolves hazardous bit walking deviations on uneven horizontal masonry surfaces, slow drilling momentum bottlenecks inside deep concrete foundations, and excessive power dissipation drops across large cutter cups by combining dynamic wave design energy coupling transfer parameters with a precise 5/16-inch shank diameter, a 5-5/16 inch extended alignment chassis, and broad structural integration supporting all-in-one integral shank cutter buckets from 1-3/4 inches up to 6 inches in diameter. Outfitted with specialized dry coring masonry stabilization channels, a lightweight physical payload build, and certified compatibility across industrial SDS-max rotary tools, this robust securement guide hardware optimizes subcontractor field turnaround metrics during mechanical utility sleeve placements, technical plumbing line pass-throughs, and heavy electrical loop installations.

Best Used For:

  • Concrete Utility Core Staging: Anchoring wide SDS-max core assemblies cleanly into reinforced foundation pours and architectural building blocks single-handedly without drill axis tracking errors.
  • Masonry Frame Penetration: Guiding deep industrial core cutters uniformly through dense clay structural bricks, solid cinder block fences, and natural stone boundaries under continuous load states.
  • Subcontractor Utility Retrofits: Establishing accurate starter pilot alignment holes before high-diameter dry coring bits open path channels for wide plumbing mains or heavy HVAC sheet metal ducting.

Key Performance & Safety Features

  • Precision-Ground Carbide Tip: Premium wear-resistant structural masonry carbide tip withstands intense mechanical hammer shocks natively, holding its true alignment center over standard steel parts.
  • Wave Design Kinetic Pairing: Specially optimized geometry matches wave core bit setups perfectly, accelerating structural drilling velocity metrics by up to 40% over older configurations.
  • All-In-One Power Transmission: System construction routes rotary hammer kinetic energy directly to the peripheral cutting row face, making large-diameter holes easier for compact hammers.
  • Universal Core Bit Adaptation: Precise alignment tolerances accommodate integral shank SDS-max cup tool housings ranging natively from 1-3/4 inches up to 6 inches in diameter.
  • Heavy-Duty Shank Core: Power-tempered 5/16-inch high-strength tool steel shank shank body isolates percussive fatigue stresses completely, checking premature body snapping faults.

What's Included

  • (1) Bosch HC88 5-5/16-Inch Carbide-Tipped SDS-Max Replacement Centering Pilot Pin Assembly

Technical Specifications

Specification Value
Brand Name Bosch
Model Number HC88
Product Classification Type Rotary Hammer Core Bit Replacement Centering Pin
Total Linear Component Length 5-5/16 in.
Connection Shank Sizing Diameter 5/16 in.
Pilot Point Active Metallurgy High-Grade Sintered Industrial Masonry Carbide Tip
Companion Tool Interface Profile SDS-max® with Integral Shank Core Systems Natively
Minimum Target Drilling Diameter 1-3/4 in. Cup Capacity
Maximum Target Drilling Diameter 6 in. Cup Capacity
Mandatory Mechanical Cut Setting Dry Coring Mechanical Operations Only
Target Application Substrates Unreinforced Concrete, Structural Clay Brick, Cinder Aggregate Block, Solid Masonry Workpieces
Package Allotment Quantity 1 Centering Bit Per Retail Unit

Pro-Tip: Once your rotating outer core bit teeth have scored a secure concentric path loop at least 1/4 inch deep into the concrete masonry, turn off your tool and pop out the centering pin entirely. Removing this pilot element from the core barrel column drops internal physical heat accumulation paths natively and accelerates deeper down-line aggregate boring tracking lines.