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Changsha Sollroc Engineering Equipments Co., Ltd
Changsha SOLLROC Engineering Equipments Co., Ltd. Focus in manufacturing of high quality DTH and RC Drilling Tools.
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Reverse Circulation RC Drill Bits , RC Button Bits RC Hammer Bits

Changsha Sollroc Engineering Equipments Co., Ltd
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Changsha Sollroc Engineering Equipments Co., Ltd
City: Changsha
Province/State: Hunan
Country/Region: China
Contact Person:Ms Ling Bo

Reverse Circulation RC Drill Bits , RC Button Bits RC Hammer Bits

Brand Name : SOLLROC
Model Number : RC3.5 RC bits
Certification : SGS
Place of Origin : China
MOQ : 1 set
Supply Ability : 20000 sets per month
Delivery Time : 3-4 weeks
Packaging Details : carton + ply wooden case + pallet for seaworthy or airworthy
Product name : RC3.5 RC bit
Color : Black or optional
Connection thread : 3" remet, metzke
Applications : Exploration drilling, mining
Face shape : Drop center, Concave
Model : RC3.5 RC bits
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Reverse Circulation RC Drill Bits, RC Button Bits, RC Hammer Bits

Product specifications:

R.C. drilling, referred to as "Centre Sample Recovery" or "Dual Wall Drilling", employs a Dual Wall Pipe where the drilling medium, normally high pressure air,is passed between the outer and inner tubes down to the face of the drilling bit where
it is returned up the centre tube along with the sample cut by the drill bit.

RC bits Model RC3.5 for shank RC3.5
DiameterNo. x Button diameter
Button angleFlushing holesShroud Dia
Part No.
mminchGauge ButtonFront Button
923 5/86 x 14mm6 x 12mm352906.1RC3.5-90
953 3/48 x 12mm6 x 12mm352936.3RC3.5-95
10248 x 12mm6 x 12mm3521006.5RC3.5-102

RC45DTH hammer typeRC55RC65RC52
Length (less bit) mm1020Length (less bit) mm111112501208
Weight(excluding bits) kg94Weight(excluding bits) kg66.511070
External diameter mmΦ99External diameter mmΦ126Φ146Φ126

Bit shank


Bit shank




Hole range(mm)Φ114-127Hole range(mm)Φ133-152Φ155-190Φ133-146

Connection thread

upon the thread of the drill tube

Connection thread

upon the thread of the drill tube

Working pressure1.0-3.0MpaWorking pressure1.5-3.5Mpa1.5-3.5Mpa1.5-3.5Mpa
Impact rate at 1.7Mpa30HzImpact rate at 2.4Mpa35Hz28Hz35Hz
Recommended Rotation speed25-40r/minRecommended Rotation speed25-40r/min25-40r/min25-40r/min

Air consumption


Air consumption



1). 3" RC Hammers & RC Bits: Diameter(86mm-102mm), shank type: RE531,

2). 3.5" RC Hammers & RC Bits: Diameter(98mm-115mm), shank type:RC3.5
3). 4'' RC Hammers & RC Bits:Diameter (104mm-127mm), shank type: RE004
4). 4.5'' RC Hammers & RC Bits:Diameter(113mm-135mm), shank type: RE542,RE543

5). 5" RC Hammers & RC Bits: Diameter(122mm-142mm), shank type: RE545,PR40,RE004

6). 5.5" RC Hammers & RC Bits: Diameter(133mm-146mm), shank type:PR52, RE547, PR54,RE052,RE054

Product Photo

SOLLROC is a leading manufacturer of rock drilling tools, like DTH hammers and bits, DTH drill pipes, RC hammers and bits, tophammer button bits, coupling, cross bits, drill rods located in Changsha, Hunan, China.
We have rich experience in this field of DTH hammers and bits for 20 years.
Owing to high quality, professional serivce and competitive price, we have gotton good reputation from our customers all over the world, such as France, Spain, Italy, South Africa, Australia, Iran, Malaysia, Brazil, Canada, America, etc.

For more information please contact:

Changsha Sollroc Engineering Equipments Co., Ltd

Tel: 86-731-85551632 Fax: 86-731-85551635


Skype: jessicaling1982

Skype: yongzhedrill


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