RC drilling tools PR52 146mm RC drill bits Reverse circulation RC5.5 P52 R.C. hammer and bits

Product Overview

Description

RC drilling tools PR52-146mm RC drill bits Reverse circulation RC5.5-P52 R.C. hammer and bits 

 

 

 

 

 

 

 

 

 

What is Reverse Circulation drilling? 

Reverse Circulation (RC) drilling is one of the three main types of mineral exploration techniques offered by Win Drill. Used to compile sample rock cuttings, the drilling process relies on hollow inner tubes to transport samples back to the surface in a continuous flow, using compressed air. Originally introduced to Australian in the 1970s, RC drilling is a preferred method for initial mineral exploration. Suitable for diverse terrain, and depths of up to 500-metres.

 

How does RC Drilling work?

The on-board compressor delivers power to a pneumatic reciprocating piston. The piston, in turn, drives a tungsten-steel drill bit which is purpose designed to be able to crush hard rock. Similar to air core drilling, drill cuttings are returned to surface inside rods. We achieve this through the use of dual wall drill rods: an outer drill rod with an inner tube. When compressed air is blown through the rod, the volume displaces the air, lifting the samples to the surface. Once cuttings reach a diverter at the top of the hole, they’re moved through a hose and around the cyclone, which slows the sample down. From the cyclone the sample goes over a splitter that delivers a percentage of the entire sample into a sample bag. The exploration drilling team then collect the samples aligned to the hole depth and lay them out for the client to log, and then transport to the lab for assay.

 

Technical data of RC5.5-PR52 RC hammer

Weight (Without bit)	External diameter	Bit shank	Hole range		Connection thread
68.5kg	Φ121mm	PR52	Φ126-Φ142mm		4"-4.5" Remet 4"-4.5" Metzke
Impact rate at 2.4Mpa	Speed recommended	Pull fore recommended	Reference air consumption (m³/min)
			17Bar	24Bar	30Bar	35Bar
35Hz	25-40r/min	8kN	16	22	28	/

 

 

 

RE542 Reverse circulation drill bit and shroud

 

Diameter		No.xButton diameter(mm)		Button angle	Flusing holes	Shroud diameter	Weight
mm	inch	Gauge	Front				kg
133	5 1/4	8xφ16	10xφ14	35°	2	131	11.2
136	5 3/8	8xφ16	6xφ16+3xφ14	35°	2	134	11.5
140	5 1/2	8xφ16	6xφ16+3xφ14	35°	2	138	11.9
143	5 5/8	8xφ16	6xφ16+3xφ14	35°	2	141	12.3