2.25in (57.2mm) Concrete Core Drill Bit (Closed-Head) is for use with gasoline or electric-powered Core Drilling Machines to obtain drilled cores of hardened concrete or asphalt. The core bit has one-piece seamless construction and easily attaches directly to the drilling machine; it works best in light to medium-duty applications.

Diamond Coring Bits are designed for wet use and offer solid performance for recovering cores from reinforced concrete and similar hard materials. Capable of fast cutting when used in applications indicated. The bit has an overall length of 20.5in (520.7mm) and is capable of coring up to a total depth of 13in (330.2mm). The coring bit can be refurbished when it appears worn. The final core diameter is approximately 0.25in (6.4mm) smaller than the nominal outside diameter.

Features:

Capable of fast cutting based on design application
Quickly attaches to drill machine
Complies with ASTM and AASHTO standards
Fits standard core drills with 1-1/4” diameter, 7 threads per inch

Included Items:

2.25in Concrete Core Drill Bit (Closed-Head)

Product tags

Specifications

Attribute name	Attribute value
Application	Concrete
Nominal Bit Size, OD	2.25in (57.2mm)
Mounting Connection	Closed-Head
Estimated Shipping Weight	4.5lb (2.04kg)

Product Q&A

Q: How are longer specimens extracted and the piston returned?

Specimens longer than 5in are extracted by repositioning the Adapter Ring after maximum piston travel, and the spring-loaded piston automatically returns to the start position when the release valve is opened.