3in (76.2mm) Asphalt Core Drill Bit (Closed-Head) is for use with electric or gasoline-powered Core Drills. Coring Bits obtain drilled asphalt cores for evaluation and testing. The core bit is a one-piece unit with seamless construction that attaches directly to the drilling machine; it works best for light to medium-duty applications.

Diamond Coring Bits are designed for wet use with solid performance in obtaining samples. They are fast cutting when used as recommended. 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 becomes worn. Final core diameter is approximately 0.25in (6.4mm) smaller than nominal outside diameter.

Features:

Capable of fast cutting based on design application
Easy connection to drilling machine
Meets ASTM and AASHTO standards
Fits standard core drills with 1-1/4” diameter, 7 threads per inch

Included Items:

3in Asphalt Core Drill Bit (Closed-Head)

Product tags

Specifications

Attribute name	Attribute value
Application	Asphalt
Nominal Bit Size, OD	3in (76.2mm)
Mounting Connection	Closed-Head
Estimated Shipping Weight	10.0lb (4.54kg)

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.