详情
Description:
1.?????Elasatomer Sealed Roller Bearing
Bit
Cutting Structure:The wear-resistance of teeth is enhanced with
premium tungsten carbide hardfacing on the tooth surfaces for steel
tooth bit.
Gauge Structure:Multiple gauge protection with gauge trimmers on
the heel and gauge inserts on the gauge surface of the cone,
tungsten carbide inserts and hardfacing on the shirttail increases
gauge holding capability and bearing life.
Sealed Bearing Structure:1.? Abrasion resistance and seizure
resistance of the bearing are improved. 2.Premium O-ring, Optimal
seal compression and curved seal structure can enhance the seal
performance.
Main Type Available:Size: 5 7/8",6",6 1/2",7 1/2",7 7/8",8 1/2",9
1/2",9 5/8",9 7/8",*2 1/4",*3 5/8",*4 3/4",*5",*5 1/2",*7
1/2",*2",*4",*6", etc.
?IADC Code:**- Series, **- Series,3?Serie
?
2. Air Cooling Roller Bearing Steel Tooth
Bit
Cutting Structure:The wear-resistance of teeth is enhanced with
premium tungsten carbide hardfacing on the tooth surfaces for steel
tooth bit
Gauge Structure:Gauge protection with gauge inserts on the gauge
surface of the cone, tungsten carbide inserts and hardfacing on the
shirttail increases gauge holding capability.
Sealed Bearing Structure:Air cooling roller bearing package. Balls
lock the conewhich reduces the probability of cone-dropping to
minimum.
Main Type Available:Size: 5 7/8",6",6 1/2",7 1/2",7 7/8",8 1/2",9
1/2",9 5/8",9 7/8",*2 1/4",*4 3/4",*7 1/2", etc.
IADC Code:**- Series, **- Series, 3?Series
