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12 1/4 CHJ537L

12 1/4 CHJ537L is part of Single Roller Cone Bit,Shareate' S horizontal directional drilling products have formed a variety of series, including tricone bits, reamers and trenchless bits.

PRODUCT SPECIFICATION

CUTTING STRUCTURE
Off-wedge on outer rows, spoon on inner rows.
Designed for low compressive strength, soft formations, such as shale, soft limestone, interlayer dolomite, coal seam, etc.
Compressive strength: 15,000-23,000 psi
SHIRTTAIL PROTECTION
Hard welding and wear resistant carbide protection on shirttail and lug back.
PRODUCT SPECIFICATION
IADC Code:  537
Bearing Type: Journal bearing/Metal sealing ring
Circulation Type: Mud
Cutting Structure:
Inner rows: Spoon
Outer rows: Off-wedge
Gage bevel Protection: Ovoid
Pin Connection:  6 5/8″ API REG
Bit Diameter: 311.15(0.8-0)mm
Product Weight:  98Kg
OPERATING SUGGESTIONS
Weight on Bit:  0.4--1.05 kN/mm
Rotational Speed: 110-40 rpm

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