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Numa Champion RC160 Care & Maintenance Instructions

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P.O. Box 348 • • • • • 646 Thompson Road • • • • • Thompson, CT 06277 USA
US Toll Free: (800) 356-NUMA • • • • • Tel: (860) 923-9551 • • • • • Fax: (860) 923-2617
E-mail: numa@numahammers.com
Website: www.numahammers.com
©2015 Numa All Rights Reserved
Patents 4,530,408 4,919,221 4,962,822 5,205,363 5,984,021 5,992,537 6,021,856 7,422,074

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  • Page 1 P.O. Box 348 • • • • • 646 Thompson Road • • • • • Thompson, CT 06277 USA US Toll Free: (800) 356-NUMA • • • • • Tel: (860) 923-9551 • • • • • Fax: (860) 923-2617 E-mail: numa@numahammers.com...

  • Page 3: Table Of Contents

    General Assembly ................ 11 Feed Tube Assembly ..............11 Hammer Assembly ............... 12 Section III Parts Identification..........Champion RC160 Exploded View ........14 & 15 Part Number Reference ............14 & 15 Section IV Air Consumption Charts ........Section V Lubrication .............
  • Page 4 If, during such warranty period, Buyer promptly notifies Numa in writing of any defect and establishes that the above warranty is not met, Numa shall either repair or replace the Product or credit the customer, as it deems necessary to meet the warranty.

  • Page 5: Section I Description

    GENERAL DESCRIPTION The Champion RC160 is a valveless, pneumatically operated reverse circulation drill designed to utilize Numa 16" to 20" (406 mm to 508 mm) diameter reverse circulation bits in a wide range of drilling applications. The Champion RC160 hammer design incorporates a hardened case and a large diameter collection tube.

  • Page 6: Functional Description

    MANUFACTURER OF DOWN HOLE HAMMERS AND BITS FUNCTIONAL DESCRIPTION BACKHEAD The backhead connects the hammer to the drill rod. Backheads can be manufactured to be compatible with several reverse circulation drill rod designs. Please contact your distributor or regional salesperson for more information. Wrench flats are provided for disassembly.

  • Page 7: Feed Tube Compression Ring

    MANUFACTURER OF DOWN HOLE HAMMERS AND BITS FEED TUBE COMPRESSION RING A feed tube compression ring sits between the feed tube and the feed tube housing and keeps the feed tube assembly tight. FEED TUBE The feed tube supplies the main air into the chambers located in the piston. It seats on a shoulder in the feed tube housing and is designed with a long bearing surface to maintain alignment in the feed tube housing.

  • Page 8: Chuck

    MANUFACTURER OF DOWN HOLE HAMMERS AND BITS CHUCK The chuck threads into the bottom end of the case with a large cross section thread form. It has internal splines that transmit rotation to the bit through a set of delrin drive plates. CHUCK BUSHING The chuck bushing is a nylon insert located in the bottom end of the chuck to provide a bearing surface between the lower bit shank and the chuck.

  • Page 9: Section Ii Maintenance

    • • • • • Maintenance should be performed in a clean environment. CAUTION USE CAUTION WHEN HANDLING DOWN THE HOLE HAMMER PARTS. NUMA HAMMER PARTS ARE MANUFACTURED FROM HARDENED, HEAT TREATED MATERIALS. DROPPING OR STRIKING THESE PARTS MAY CAUSE SEVERE DAMAGE. STRIKING THE HAMMER PARTS WITH HAMMERS, CROWBARS OR LIKE INSTRUMENTS WILL VOID THE WARRANTY.
  • Page 10 MANUFACTURER OF DOWN HOLE HAMMERS AND BITS Force Direction Required: Pulldown Visetongs Petol No. VTDA120 15,000 - 25,000 lbs. (6,800 - 11,400 Kg.) Champion RC160 Hammer stand and wrench combination, structural steel, Blocking to I-Beam, weld construction height of stand bracing to suit.
  • Page 11 MANUFACTURER OF DOWN HOLE HAMMERS AND BITS • • • • • Remove the collection tube housing. The collection tube housing is equipped with two 1/2" (13 mm) UNC tapped holes for lifting eyes to facilitate removal. • • • • • Using a screwdriver, pick the two o-rings from the inside diameters of the collection tube housing.

  • Page 12: Inspection

    MANUFACTURER OF DOWN HOLE HAMMERS AND BITS INSPECTION • • • • • All parts should be washed in a clean solvent before they are inspected and reassembled. WARNING USE CLEANING FLUIDS THAT ARE NONFLAMMABLE AND AVOID BREATHING THE FLUID VAPORS. •...
  • Page 13 MANUFACTURER OF DOWN HOLE HAMMERS AND BITS BELLEVILLE WASHERS • • • • • Inspect the belleville washers for severe wear indications or cracks. • • • • • Replace if necessary. FEED TUBE ASSEMBLY • • • • • Inspect all makeup surfaces for indentations or nicks caused by wear.
  • Page 14 MANUFACTURER OF DOWN HOLE HAMMERS AND BITS SNAP RING • • • • • Inspect the snap rings for severe wear indications. • • • • • Replace if necessary. CHUCK • • • • • Inspect for cracks and burrs. •...

  • Page 15: General Assembly

    MANUFACTURER OF DOWN HOLE HAMMERS AND BITS GENERAL ASSEMBLY INSTRUCTIONS • • • • • Assembly should be performed in a clean environment. • • • • • All parts should be cleaned thoroughly and wiped dry before assembly. • • • • • Oil all parts by hand using Rock Drill Oil to insure easy assembly.

  • Page 16: Hammer Assembly

    DUE TO THE INTERNAL COMPRESSION SPRINGS, THE CHAMPION RC160 BACKHEAD FULLY CAN ONLY BE TIGHTENED WITH A POWER WRENCH ON THE RIG. CAUTION LIFTING THE CHAMPION RC160 HAMMER WITH THE THREAD JOINTS LOOSE MAY CAUSE DAMAGE TO THE THREADS. Champion RC160 Page 12 07/16/15 ®...
  • Page 17 ASSEMBLY IS NECESSARY TO FACILITATE ASSEMBLY. CAUTION DUE TO CLOSE TOLERANCES BETWEEN THE CHAMPION RC160 INTERNAL PARTS AND THE CASE, NUMA CANNOT ACCEPT RESPONSIBILITY FOR DAMAGE CAUSED BY WELDING ON THE CASE OD. WELDING ON THE CASE CAN CREATE DISTORTION, CAUSE PREMATURE FAILURE AND VOID THE WARRANTY.

  • Page 18: Section Iii Parts Identification

    MANUFACTURER OF DOWN HOLE HAMMERS AND BITS SECTION III PARTS IDENTIFICATION EXPLODED VIEW Case 009937 (1) Check Valve 009616 (1) Collection Tube 018638 (1) Check Valve Spring 009619 (1) Bit Bearing Collection Tube Housing 008148 (1) O-Ring 009623 (1) Collection Tube O-Ring 009624 (1) Collection Tube O-Ring...
  • Page 19 MANUFACTURER OF DOWN HOLE HAMMERS AND BITS SECTION III PARTS IDENTIFICATION EXPLODED VIEW Figure 3-2 Feed Tube Assembly 009627 (1) Feed Tube Snap Ring 009625 (1) Feed Tube 009612 (1) Orifice O-Ring 009624 (1) Feed Tube Compression Ring 009626 (1) Feed Tube O-Rings 009622 (2) Feed Tube Housing...

  • Page 20: Section Iv Air Consumption Charts

    CHAMPION RC160 * Operation Above 200 PSI (13.8 BAR) Is Not Recommended. NOTE Numa RC hammers utilize an orifice o-ring as a choke. Removal of the orifice o-ring allows additional air to pass through the hammer for hole cleaning/ flushing purposes.

  • Page 21: Section V Lubrication

    The Champion RC160 hammer requires a continuous supply of the correct type Rock Drill Oil. The Champion RC160 hammer consumes at least 10 quarts (10 litres) of Rock Drill Oil per hour in order to maintain adequate lubrication. See table 5-1 for recommended Rock Drill Oil.

  • Page 22: Section Vi Storage

    MANUFACTURER OF DOWN HOLE HAMMERS AND BITS SECTION VI STORAGE When storing a Champion hammer, it is important to take the necessary steps in order to insure a smooth operation after restarting. When the hole is completed and the hammer is to be inactive for several weeks or longer the following steps should be followed: Each drill rod should be blown clear of all water.

  • Page 23: Restarting

    MANUFACTURER OF DOWN HOLE HAMMERS AND BITS • • • • • Lubricate all the internal parts with rock drill oil. See table 5-1 on page 17 for suitable rock drill oils. • • • • • Cap the backhead and chuck ends. •...

  • Page 24: Section Vii Button Bit Maintenance

    BUTTON BIT MAINTENANCE GENERAL Numa button bits are designed for fast penetration and long life. Keeping the carbide buttons sharp has a direct effect on both the penetration and the tool life. As the bit wears, flat spots develop on the carbide buttons. These flat spots increase stress on the buttons causing the bit to work harder, which may cause button failure.

  • Page 25: Section Viii Champion Rc160 Recommended Spares

    For Complete Hammer Assembly #017397 Table 8-1 NOTE Class 1 Represents a user of a Champion RC160 hammer that has readily available spare parts. Class 2 Represents a user of a Champion RC160 hammer that does not have readily available spare parts.
  • Page 26 MANUFACTURER OF DOWN HOLE HAMMERS AND BITS NOTES Champion RC160 Page 22 07/16/15 ® ® ® ® ®...
  • Page 27 MANUFACTURER OF DOWN HOLE HAMMERS AND BITS NOTES Champion RC160 07/16/15 Page 23 ® ® ® ® ®...

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