B and XB Series Single Tube Core Barrels
B type single tube core barrels are suitable for drilling when no core examination is required (e.g. the drilling of grout holes). XB type are suitable for extended concrete coring.
Whereas the B type core barrel is of fixed length, the XB core barrel is easily extendable during drilling by adding additional metric casing tubes between the core barrel head and reaming shell. In both series, the core lifter fits into the the taper on the inside of the core bit so a core lifter case is not required.
Available in 9 different diameters for metric (millimetre) hole sizes between 46 – 146 mm.
- Saves cost when no core examination is required
- Easily extendable in length when coring through thick concrete.
|Specification||Core Barrel Type|
|Hole Diameter (mm)||46.3||56.3||66.3||76.3||86.3||101.3||116.3||131.3||146.3|
|Core Diameter (mm)||31.7||41.7||51.7||61.7||71.7||86.7||101.7||116.7||131.7|
|Kerf / Crown Thickness (mm)||7.15||7.15||7.15||7.15||7.15||7.15||7.15||7.15||7.15|
|Cutting Area (cm2)||8.9||11.2||13.5||15.8||18.1||21.6||25.0||28.4||31.9|
|Hole Area (cm2)||16.8||24.9||34.5||45.7||58.5||80.6||106.2||135.4||168.1|
|Cutting Area as % of Hole Area||53%||45%||39%||35%||31%||27%||24%||21%||19%|
|Core Area (cm2)||7.9||13.7||21.0||29.9||40.4||59.0||81.2||107.0||136.2|
|Thread Connection in Head||CR42||CR50||CR50||CR50||CR50||NW||NW||NW||NW|
*Cross-over sub required for drill rods not matching the thread connection in core barrel head
Key to Main Parts of B and XB Core Barrel Assemblies
Complete core barrel consists of:
1. Core Barrel Head
2. Sample Tube 0.5m, 1.0m, 1.5m or 3.0m long
3. Reaming Shell (Blank)
4. Core Lifter
Core Bit is not supplied as part of the core barrel assembly, but must be chosen correctly to match the particular application and rock formation. A Blank Reaming Shell is supplied with the Core Barrel, but TC or Diamond type may be required for reaming purposes. Please refer to our Core Bits page for further details.