Raise Boring Reamer Stem Bar with Surface Tungsten Carbide for Mining

• Customization: Available
• After-sales Service: Online Service
• Warranty: One Year
• Model NO.: SRH-8~12-7/8\"
• Certification: ISO 9001:2008, BV Marine Wps
• Standard: AISI, ASME, GB, GOST, ASTM
• Surface Treatment: Surface Tungsten Carbide
• Manufacturing Process: Forging
• Material: Alloy Steel,En26,En36
• Product Procedure: Forging, Heat Treatment, Lathe Machining
• Heat Treatment: Quenching and Tempering
• Surface Hardness: HRC40-62
• Size: 8~12-7/8"
• Min Tensile Strength: 900MPa
• Min Yield Strength: 685MPa
• Min Impact Value: 47j
• Transport Package: Wooden Box
• Specification: 8~12-7/8"
• Trademark: ETERNAL
• Origin: China
• HS Code: 8431431000
• Production Capacity: 1000 Pieces/Month
• Package Size: 155.00cm * 25.00cm * 25.00cm
• Package Gross Weight: 320.000kg

Product Description

Product Description

ETERNAL company specializes on manufacturing raise boring reamer stem bars, size from 8"~12-7/8". In the past years, RBM reamer stem bars have been exported to many countries , such ash South Africa , Brazil , Chile , Mexico , Russian , Vietnam , Korea etc.

Application

They are widely applicated on all kinds of underground constructions, including mine shafts, mine passages, hydro power passages, railway traffics, etc.

Size and Technical Specification

Size	shoulder to shoulder length	Bore diam.	Neck diam.	Diam.Over ribs	Diemensions across spanner flats	Pin and box connections*	weight
A	B	C	D	E	F
in mm	in mm	in mm	in mm	in mm	in mm		kg
8"230.2	48"1219.2	2 13/16"71.4	6 1/4"158.8	9"or9 7/8"235or 250.8	6 7/8"174.6	6 3/4"R.B.-D122	160
10”245	60°1524	2 13/16"71.4	7 7/8"200	11”279.4	8”203.2	8 1/4"RB.-DI22	315
11 1/4"286.8	60°1524	3 3/4"95.3	9”228	12 1/4"311.2	9"228	9 1/4"RB.-D122	450
12 7/8"323.9	60°1524	4 3/4"120.7	10 1/2"266.7	13 3/4"349.3	10 1/2"266.7	10 1/2"RB-D122	700

Raw Material

EN26,EN36,etc.

EN26: It is a high-strength steel that follows the BS970 standard. Its chemical composition mainly includes carbon, silicon, manganese, chromium, nickel, molybdenum, etc. The carbon content is 0.36-0.44%, the nickel content is 2.30-2.80%, and the molybdenum content is 0.45-0.65%. After quenching and tempering treatment, the tensile strength is ≥ 930MPa and the yield strength is ≥ 725MPa, suitable for applications such as high-strength shafts, bolts and nuts, gears, etc.
EN36: It is a low-alloy steel. The common EN36 steel has a carbon content between 0.30-0.40% and contains alloying elements such as manganese, chromium, nickel, and molybdenum. It has the characteristics of high strength, good toughness, and excellent hardenability. After quenching and tempering treatment, the tensile strength is 930-1080 MPa and the yield strength is 670-880 MPa. EN36 steel is suitable for manufacturing high-strength parts such as shafts, gears, bolts, nuts, etc.

Equipment

Eternal company own heavy duty workshop 8,000 square meters ,till now more than 100 sets machine facilities have been installed.  Main facility is as following : 2000ton fast forging press , heating treatment furnace, long 10 meters quenching tank , 500 tons straightening machine , 6 meters middle-frequency surface quenching machine, 3-11 meter CNC horizontal lathes, CNC machining center, 10 meters deep hole boring machine, 10 meters honing machine , including all kinds inspection and test tools etc. 

Partners

Our products have been exported to Europe, U.S.A , South Africa, Russian, Mexico, Brazil, Peru, Chile, Korea, Vietnam, Indonesia , Middel East etc 
more than 80 countries , our quality is accepted by customers.

Company Profile

Jiangyin Eternal Heavy Industry Co.,Ltd was setted up in 2008, its products cover design and manufacturing mining equipment, underground engineering    equipment,oil &gas equipment.The main products include raise boring drill tool,TBM roller cutter and cutting head,Oil &gas wellhead equipment and Chris  equipment etc.They are used in mine and underground tunnelling,oil and gas exploitation.They could be installed and worked on Robbins, AtlasCopco, Herrenknecht AG, NFM etc machines.

Jiangyin Eternal Heavy Industry Co.,Itd covered the space 15000 square meters,8000 square meters heavy duty workshop was builted, its max lift height is 16 meters,designed max loading capacity is 75 tons, the capacity to manufacture max cutter head with 14 meters diameter would be achieved step by step.Eternal Heavy Industry has advanced manufacturing equipment including vertical CNC machining center, frame type CNC machining center,CNC lathe,heavy duty horizontal lathe,display boring and milling machine,etc,testing equipment including computer tensile testing machine,low temperature  impact tester,UT tester,MT detector,etc.

Jiangyin Eternal Heavy Industry co.,Itd has passed through ISO9001- 2000 quality system certification, BV marine WPS certification.Eternal has mastered the ability on metal material research, special thread machining,surface overlay welding with wear resistant material.The products has good quality and long lifetime,and the quality is accepted by many customers,now they have been exported to many countries,including Brazil,Chile,Mexico,Russian,Korea,Vietnam, India etc.

Jiangyin Eternal Heavy Industry co.,ltd would continue to make a co- operation with famous research centers at home and abroad,and develop more  excellent metal materials which could suffer a extreme rigorous working condition,also master core technology on surface overlay welding and welding  material.Jiangyin Eternal Heavy Industry Co,Ltd would make a great contribution on equipment localization in future.

You are welcome to visit our company !

Why Choose Us?

1. More than 20 years machining experience .
2. Rich experience on heat treatment , including normalizing , annealing , 
    quenching and tempering , high frequency surface hardening etc .
3. Complete production equipment from raw material to finished product 
4. Strict quality control , including raw material chemical specification test, non-destructive test , size inspection , hardness test etc .
5. More than 20 years exporting experience
6. Fast delivery time 

Raise boring reamer head

Raise boring roller cutter

Raise boring reamer stem bar

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......

FAQ

1. Who are we?
 We are based in Jiangsu, China, start from 2008,sell to Domestic Market(36.00%),Eastern Europe(21.00%),Southeast
Asia(16.00%),South America(12.00%),North America(9.00%),Northern Europe(4.00%),South Asia(2.00%). There are total about 51-100 people in our office.
 
2. How can we guarantee quality? 
Always a pre-production sample before mass production; Always final Inspection before shipment; 

3.What can you buy from us? 
Raise boring reamer heads,roller cutters,reamer stem bars,stabilizers,drill pipes,etc.

4. Why should you buy from us not from other suppliers? 
We have rich experience on forging and heat treatment. 

5. What services can we provide?
Accepted Delivery Terms:FOB,CFR,CIF,EXW,FAS,CIP,FCA,CPT,DEQ,DDP,DDU,Express Delivery,DAF,DES; 
Accepted Payment Currency:USD,EUR,CNY; 
Accepted Payment Type: T/T,L/C,D/P D/A,Western Union; 
Language Spoken:English,Chinese,Portuguese,Russian