Tri-Cone Rotary Bits - For Mining TCI Tri-Cone bits for open pit mine blast holes.   TCI Tri-Cone Bits for Mining Size Pin Connection 6-3/4” (170 mm) 3-1/2” API Reg 7-7/8” (200 mm) 4-1/2” API Reg 9-7/8” (250 mm) 6-5/8” API Reg 10-5/8”  (271 mm) 6-5/8” API Reg 12-1/4”  (311 mm) 6-5/8” API Reg             Recommended Operating Parameters of TCI Tri-Cone Bits for Mining Bit Type Normal WOB KN/mm (bit diam.) Rotary Speed RPM Cutting Structure Main Features Applicable Formation K412 0.70-1.00 120-60 Insert bit, conical spherical compacts in inner row and in outer row. Soft with low compressive strength and high drillability, such as shale, soft limestone, soft sandstone, rudaceous clay, soft dolomite, salt bed and coal bed etc. K432 0.70-1.00 100-60 Insert bit, conical spherical compacts in inner row and conical spherical or wedge compacts in outer row. Soft with low compressive strength and high drillability, such as; shale, soft limestone, sandstone, conglomerate, soft dolomite with stringers and coal bed etc. K532 0.70-1.00 100-60 Insert bit, conical spherical compacts in inner row and conical spherical or wedge compacts in outer row. Soft formation with low compressive strength, such as; shale, soft limestone, dolomite with stringers and coal bed etc. K612 0.70-1.00 100-60 Insert bit, conical spherical compacts in inner row and conical spherical or spherical compacts in outer row. Medium hard with high compressive strength and thick and hard stringers, such as; hard shale, limestone, sandstone, dolomite and coal bed, etc. K632 0.80-1.00 100-60 Insert bit, conical spherical compacts in inner row and conical spherical or spherical compacts in outer row. Medium hard with high compressive strength and high abrasiveness, such as; limestone, sandstone, dolomite and chert etc. K732 0.80-1.00 90-60 Insert bit, conical spherical compacts or double round top inserts in inner row, spherical compacts in outer row. Hard formation with high compressive strength and high abrasiveness, such as granite, limestone, sandy shale, dolomite and chert, etc. K832 1.10-1.30 90-60 Insert bit, double round top inserts or spherical compacts in inner row, spherical compacts in outer row. Hard formation with high compressive strength and high abrasiveness, such as magnetic quartzite, quartzite and granite, etc *Note: The upper limits of WOB and RPM recommended in the above tables should not be used simultaneously. Home   |   Drill Bits   |   Drilling Rigs   |   DTH Hammer   |   Drill Pipes   |   Mud Pumps   |   About Us   |   Contact Us   |   Design © 2007 Ideograph. Content © 2007 Rocksmith. All rights reserved.