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HDD60
OPERATIONS MANUAL
Care & Maintenance Instructions
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Do not discard this manual.
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Keep manual readily available for reference during operation or when servicing product.
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Before operation and maintenance, read and comprehend operations manual content.
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Customer Service: 800.356.NUMA or 860.923.9551
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Email: numa@numahammers.com
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Website: www.numahammers.com
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Mailing Address: P.O. Box 348, Thompson, CT 06277 USA
Patents: 6,883,618 7,442,074 10,612,310 11,085,242 EP 3 803 032 B1 KR-101340351 EP-2029325
CN-101448608 BR-P10711711 AU2007254317 AU2007254317 WO2007/136658
© 2024 Numa Tool Company. All Rights Reserved.
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Table of Contents
Summary of Contents for Numa HDD60
- Page 1 Email: numa@numahammers.com • Website: www.numahammers.com • Mailing Address: P.O. Box 348, Thompson, CT 06277 USA Patents: 6,883,618 7,442,074 10,612,310 11,085,242 EP 3 803 032 B1 KR-101340351 EP-2029325 CN-101448608 BR-P10711711 AU2007254317 AU2007254317 WO2007/136658 © 2024 Numa Tool Company. All Rights Reserved.
- Page 2 BHA (Adapter, Sonde Housing, Bent Sub, Hammer and Bit) to be pre-torqued. □ Sonde housing toolbox and at least one extra bit. □ Lubricator equipped with inlet/outlet 2” Boss fittings & Numa recommended Bioblend 150 or equivalent. □ Drill Rig (in good working condition) plumbed for air properly including check valve.
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Page 3: Table Of Contents
Long Term ................14 Restarting ................. 15 Section VII Button Bit Maintenance ........16 General ..................16 Sharpening ................16 Section VIII HDD60 Recommended Spares ......17 Section IX HDD60 Makeup Torque .......... 18 HDD60 Acceptable Grip Areas ..........18 HDD60... - 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.
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Page 5: Section I Description
All standard hammers shipped from Numa have a blank choke installed. Refer to page 11 for correct choke selection and pages 5 and 9 to facilitate the removal and the installation of the choke. -
Page 6: Functional Description
The feed tube supplies the main air into the chambers located in the piston. It is connected to the backhead by the pin. The feed tube is designed with a long bearing surface to maintain alignment in the backhead. HDD60 Page 2 11/07/2024... -
Page 7: Piston
CHUCK The chuck threads into the bottom end of the case with single start threads. It has internal splines that mesh with the splines on the bit body to transmit rotation. HDD60 Page 3 11/07/2024... -
Page 8: Section Ii Maintenance
• is much easier than trying to do so after the drill has been removed from the drill rig. 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. - Page 9 HDD60 Bit Bearing Press Plate #016127 Figure 2-1 To disassemble the backhead / feed tube assembly, stand the backhead / feed tube •...
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Page 10: Inspection
FEED TUBE Inspect the outside diameter for nicks, burrs and scoring. • Inspect all makeup surfaces for indentations or nicks caused by wear. • Remove all minor irregularities with emery cloth. • Replace if necessary. • HDD60 Page 6 11/07/2024... - Page 11 Remove all internal irregularities with a fine honing stone. • Remove all external irregularities with an emery cloth. • Clearance between the bit shank and bit bearing should not exceed .012" (.30 mm). • Replace if necessary. • HDD60 Page 7 11/07/2024...
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Page 12: General Assembly
All parts should be cleaned thoroughly and wiped dry before assembly. • Oil all parts by hand using Rock Drill Oil to insure easy assembly. • Coat all thread connections with a thread compound to allow joints to thread easily. • HDD60 Page 8 11/07/2024... -
Page 13: Hammer Assembly
• Screw the backhead into the case. CAUTION DUE TO CLOSE TOLERANCES BETWEEN THE HDD60 INTERNAL PARTS AND THE CASE, NUMA CAN NOT 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 14: Section Iii Parts Identification
Bit Bearing Choke 015827 (1) 005559 (1) Feed Tube Bit Retaining Rings 015952 (1) O-Ring 002594 (1) Feed Tube O-Ring Bit Retaining Rings 005738 (1) 011983 (1) Piston Chuck SST 019224 (1) 020607 (1) Hammer Assembly #021148 HDD60 Page 10 11/07/2024... - Page 15 Choke 1/8" Hole 007114 0.2 oz (6.8 g) Choke 3/16" Hole 007115 0.2 oz (6.8 g) Choke 1/4" Hole 007116 0.2 oz (6.8 g) (installed in hammer) HDD60 Hammer 021148 217.0 (98.4 Kg) 3-1/2 Reg Pin SST HDD60 Page 11 11/07/2024...
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Page 16: Section Iv Air Consumption Charts
SECTION IV AIR CONSUMPTION CHARTS HDD60 DRILL PRESSURE (BAR) 13.6 20.4 27.6 34.5 2000 1800 1600 1400 1200 1000 94.4 DRILL PRESSURE (PSI) SOLID CHOKE 3/16 (4.8mm) CHOKE 1/8 (3.2mm) CHOKE 1/4 (6.4mm) CHOKE HDD60 Page 12 11/07/2024... -
Page 17: Section V Lubrication
The HDD60 hammer requires a continuous supply of the correct type Rock Drill Oil. The HDD60 hammer consumes at least two quarts (2 litres) of Rock Drill Oil per hour in order to maintain adequate lubrication. When using Biodegradable Oils, you must increase the total amount by 25%. -
Page 18: Section Vi Storage
If at all possible, the backhead and chuck should be broken loose on the drill rig, this is much easier than trying to do so in the shop. Disassemble the hammer. • Inspect and wipe all the parts clean. • HDD60 Page 14 11/07/2024... -
Page 19: Restarting
If any internal hammer parts have oxidized, use an emery cloth to polish each part. Wash each hammer part, wipe dry, relubricate with rock drill oil and reassemble the hammer. CAUTION FAILURE TO CHECK INTERNAL PARTS BEFORE RESTARTING THE HAMMER MAY CAUSE SERIOUS DAMAGE TO THE HAMMER. HDD60 Page 15 11/07/2024... -
Page 20: 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 21: Section Viii Hdd60 Recommended Spares
For Complete Hammer Assembly #021148 Table 8-1 NOTE Class 1 Represents a user of a HDD60 hammer that has readily available spare parts. Class 2 Represents a user of a HDD60 hammer that does not have readily available spare parts. HDD60 Page 17 11/07/2024... -
Page 22: Section Ix Hdd60 Makeup Torque
HEATING OR STRIKING THE CASE WILL VOID THE WARRANTY. 6.06 CASE / CHUCK JOINT 2.25 2.50 3.00 3.00 GRIP AREA GRIP AREA 4.00 4.00 16.51 CLAMPING IN THIS AREA WILL DISTORT THE CASE BORE HDD60 HAMMER HDD60 Page 18 11/07/2024... - Page 23 NOTES HDD60 Page 19 11/07/2024...
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