Products Description LEANOMS
Leanoms has a long history of providing Top Hammer drilling products for the most demanding conditions. Drill Extension Rod with industry-leading strength and penetration rates. Leanoms has responded to industry demands for a stronger, more versatile percussive Drill Extension Rod. This delivers improved impact efficiency for faster penetration rates, increased rod tip-off resistance, and less hole deviation.
LARGER CROSS-SECTIONAL TRANSITION AREA
Increased rod rigidity/strength when used in deviated applications such as scaling. This results in decreased rod tip-offs and increased productivity.
EXTENDED BIT SKIRT
Provides straighter holes with reduced deviation
RETRACT OR STRAIGHT TRACK BIT DESIGN (OPTIONAL)
Provides a cleaner, straighter hole as well as easier bit removal in varied ground conditions
PREMIUM TUNGSTEN CARBIDE BUTTONS
Delivers extended drilling performance and longer durability by increasing toughness and wear-resistant properties
PREMIUM BODY STEEL MATERIAL
Reduces face and body wear and provides uniform wear characteristics, improved button retention and efficient energy transfer
Specification LEANOMS
THREAD TYPES OF Drill Extension Rod:
R Thread (Rope)
• Rope threads — low pitch, 12.7 mm and a small angle of profile
• Sizes: 22 mm – 38 mm
• Good wear properties
• Ideal for single pass or short hole drilling
such as underground tunneling applications that require infrequent uncoupling
HM (T) Thread
• HM thread or “T” thread — larger pitch and a larger angle of profile than the Rope thread
• Sizes 38 mm, 45 mm and 51 mm
• Excellent wear properties and good coupling qualities
• Ideal for extension drilling with multiple steel
• Greater torque capacity
EL Thread
• Similar angle of profile to the HM thread
• Designed for a 60 mm and 70 mm diameter extension steel for use with the new generation high powered rock drills
• Excellent wear resistance and a pitch angle that uncouples easily
Drill Extension Rod work with Thread Button Bits together.
