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FEATURED

YKG-350 Solar Piling Drilling Rig

00229

YKG-350G Solar Piling Drilling Rig

00231

5 7/8"=149.225mm 3-1/2 API REG IADC437 IADC517 IADC537 IADC617 IADC637 Water Well Drill Mining Rotary Tri Tricone Drill Bit for Blast Hole and Well Drilling

00227

2023 YKMT new groundwater detector water detector ZN-180 water detector

00201

12 inch Raise bore drilling Raising Drilling Hob Reamer bit

Reamer bits are mainly used in coal mines, metal mines, water conservancy and hydropower projects and other fields. The overall structure design and material selection of drill bits are scientific and reasonable. There are two kinds of tooth shapes to ensure that the drill bit has the advantages of good wear resistance, high overall strength and good rock breaking effect during drilling.

Model Number:

12 inch Raising Drilling Hob

Description

Specification

No.	Reamer bit Size	Alloy	Alloy Lines	Hob internal structure
No.	mm	Alloy	Alloy Lines	Hob internal structure
1	233	wedge tooth	5	Thrust + roller structure
2	310	wedge tooth	5/6/8	Thrust + roller structure Tapered roller bearing structure Ball + roller structure
3	317	wedge tooth	5/6	Thrust + roller structure Tapered roller bearing structure
4	320	wedge tooth	5	Thrust + roller structure
5	322	wedge tooth/Conical teeth	5/6/8	Thrust + roller structure Tapered roller bearing structure Ball + roller structure
6	324	Conical teeth	5	Thrust + roller structure
7	325	Conical teeth	5	Thrust + roller structure
8	330	Conical teeth	4	Thrust + roller structure
9	339	Conical teeth	5	Thrust + roller structure
10	340	wedge tooth	4/5	Tapered roller bearing structure Ball + roller structure
11	346.7	wedge tooth	4/5	Tapered roller bearing structure Ball + roller structure
12	381	wedge tooth	5	Tapered roller bearing structure Ball + roller structure

Schematic diagram of ream drilling in raise air drilling
1-Raise boring machine;
2-Air compressor;
8-Drill rod;
10-Air duct nozzle;
11-Air duct;
12-Air duct splitter;
13-Reamer bit;
14-Hob;
15-Steel beam of the boring machine