Mincon MQ68 Hammer

The Mincon MQ68 hammer is designed around proven technology to perform at the top end of the performance scale compared to other tools on the market. These tools are excellent for all types of drilling applications including residential geothermal, production quarry drilling, seismic drilling and small construction drilling.
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Key Features and Benefits

  • Patented features maximize energy output and reduce service requirements.
  • Fewer internal components minimize service requirements.
  • Valveless, high frequency design ensures smooth operation.
  • Hardened wear sleeve for optimum wear resistance even in the most abrasive conditions.
  • Multi-start threads on backhead and chuck ensure easy coupling/uncoupling of hammer.
  • Unique internal mount system eliminates the need for wear shims and special assembly tools.
  • All critical internal components are heat treated under strict control to maximize tool longevity.

For more information:

+40 314 253 800
info@romned.ro

Ron van Dam
CEO

Specifications Metric Imperial
Hammer Outside Diameter 146mm 5.75″
Hammer Length (Less Bit, Backhead Shoulder to Chuck) 1002mm 39.4″
Backhead Spanner Flat Size 100mm 4″
Drill Bit Shank Type QL60
Minimum Bit Size 152mm 6.0″
Hammer Weight (Less Bit) 87.9Kgs 194Lbs
Drill Bit Weight (165mm/6 1/2″) 24.5Kgs 54Lbs
Piston Weight 19.3Kgs 42.5Lbs
Backhead Stand Off 0.75mm 0.030″
Make up Torque 6100-8135 NM 4500-6000 FT Lbs
Wear Sleeve Reverse Limit Non Reversible
Wear Sleeve Discard Limit 128.5mm 5.060″
Recommended Minimum Air Package 283 l/s @ 20.7 Bar 600 cfm @ 300 psi
Item # Part Number Description
MC601AS01 Mincon MQ68 (3 1/2″ A.P.I. Reg. Pin)
1 MC601BH01 Backhead (3 1/2″ A.P.I. Reg. Pin)
2 MD622OR01 O Ring
3 MB506CH01 Choke Blank
4 MB502CV01 Check Valve
5 MB503SP01 Spring
6 MB504SM01 Steel Make-Up Ring
7 MB505LR01 Lock Ring
8 MC603LM01 Lock Ring Mount
9 MD607DR01 Air Distributor
10 MD621OR01 O Ring
11 MD620OR01 O Ring
12 MC609SR01 Seating Ring
13 MC608IC01 Inner Cylinder
14 MC610PN01 Piston
15 MC611WS01 Wear Sleeve
16 MC612PR01 Piston Retaining Ring
17 MD622OR01 O Ring
18 MD622OR01 O Ring
19 MC613BB01 Aligner
20 MC614BR01 Bit Retaining Ring
21 MD621OR01 O Ring
22 MC615CK01 Chuck (QL60)
23 MD626SK04 Service Kit
MD626SK04 Service Kit
3 MB506CH01 Choke Blank
MB506CH02 Choke 1/8″ (3.2mm)
MB506CH03 Choke 3/16″ (4.8mm)
5 MB503SP01 Spring
MD625OK04 O Ring Kit
MD625OK04 O Ring Kit
2 MD622OR01 O Ring
10 MD621OR01 O Ring
11 MD620OR01 O Ring
17 MD622OR01 O Ring
18 MD622OR01 O Ring
21 MD621OR01 O Ring

6 5 MQ68 AC 

Air Pressures are given for compressors operating at seal level at 20° C (68º F). Corrections to actual compressor volume should be made to account for temperature, altitude and relative humidity.

DTH hammers must receive a constant supply of proper rock drill oil to protect the internal components and to provide a good air seal between the hammer’s running surfaces for efficient drilling. Mincon recommends the use of Mincon Envirosafe® Rock Drill Oil (RDO) to maintain optimal performance and extend the life of the internal components. The correct consumption of oil is dependent upon the air volume and conditions. Please refer to the lubrication graph below for recommendations. When drilling in wet conditions the normal amount should be doubled. There should be visual evidence of oil around the drill bit shank and within the tube joints when changing tubes.

If using petroleum based rock drill oils, the recommended grade of oil is dependent on the ambient temperature and the operating pressure. As a rule of thumb, ISO320 grade rock drill oil should be used whenever possible as the hammer is a high frequency tool, however, where the pump cannot pump the oil in colder conditions, a lower grade of oil can be used as per the graph below.

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Note: The Part Numbers below require the Carbide Insert type code to be added on the end to complete them. For a combination of carbide inserts use the gauge row code first and then the face code.

Diameter Face Type Part Number No. x Button Dia (inch) Flushing holes Weight Approx.
mm inch Outer Inner Front Kgs. Lbs.
159 6 1/4 Concave 62QL60C58 8 – 5/8 4 – 5/8 4 – 5/8 2 23.6 52
159 6 1/4 Concave 62QL60C38 8 – 3/4 4 – 5/8 4 – 5/8 2 24.1 53
165 6 1/2 Concave 64QL60C58 8 – 5/8 4 – 5/8 4 – 5/8 2 24.5 54
165 6 1/2 Concave 64QL60C335 8 – 3/4 4 – 3/4 4 – 5/8 2 25 55
165 6 1/2 Flat Face 64QL60F38 8 – 3/4 8 – 5/8 2 25 55
165 6 1/2 Convex 64QL60V359 9 – 3/4 4 – 5/8 4 – 5/8 3 25 55
171 6 3/4 Concave 66QL60C58 8 – 5/8 4 – 5/8 4 – 5/8 2 25.4 56
171 6 3/4 Concave 66QL60C335 8 – 3/4 4 – 3/4 4 – 5/8 2 25.4 56
171 6 3/4 Concave 66QL60C39 9 – 3/4 6 – 5/8 5 – 5/8 3 25.4 56
171 6 3/4 Convex 66QL60V359 9 – 3/4 4 – 5/8 4- 5/8 3 25.4 56
171 6 3/4 Flat Face 66QL60F30 10 – 3/4 12 – 5/8 2 25.4 56
178 7 Concave 70QL60C39 9 – 3/4 6 – 5/8 5 – 5/8 3 26.3 58
178 7 Flat Face 70QL60F39 9 – 3/4 11 – 5/8 3 26.3 58
190 7 1/2 Concave 74QL60C39 9 – 3/4 6 – 3/4 5 – 3/4 3 30.4 67
190 7 1/2 Flat Face 74QL60F39 9 – 3/4 11 – 3/4 3 30.4 67
197 73/4 Concave 76QL60C50 10 – 5/8 4 – 5/8 8 – 5/8 2 32.7 72
200 7 7/8 Concave 77QL60C39 9 – 3/4 6 – 3/4 5 – 3/4 3 33.6 74
200 7 7/8 Convex 77QL60V39 9 – 3/4 6 – 3/4 5 – 3/4 3 33.6 74
203 8 Concave 80QL60C30 10 – 3/4 6 – 3/4 7 – 3/4 2 34.1 75
203 8 Convex 80QL60V39 9 – 3/4 6 – 3/4 6 – 3/4 3 34.1 75
216 81/2 Concave 84QL60C30 10 – 3/4 7 – 5/8 12 – 5/8 2 35.9 79
219 8 5/8 Concave 85QL60C30 10 – 3/4 6 – 5/8 12 – 5/8 2 36.8 81
222 8 3/4 Concave 86QL60C30 10 – 3/4 6 – 5/8 12 – 5/8 2 36.8 81