Mincon MQ50 Hammer

The Mincon MQ50 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 115mm 4.53″
Hammer Length (Less Bit, Backhead Shoulder to Chuck) 1057mm 41.6″
Backhead Spanner Flat Size 89mm 3.5″
Drill Bit Shank Type QL50
Minimum Bit Size 127mm 5.0″
Hammer Weight (Less Bit) 59.9Kgs 132Lbs
Drill Bit Weight (130mm/5 1/8″) 15.9Kgs 35Lbs
Piston Weight 13.7Kgs 30.1Lbs
Backhead Stand Off 0.75mm 0.030″
Make up Torque 5085-6780 NM 3750-5000 FT Lbs
Wear Sleeve Reverse Limit Non Reversible
Wear Sleeve Discard Limit 106.0mm 4.173″
Recommended Minimum Air Package 283 l/s @ 17.2 Bar 600 cfm @ 250 psi
Item # Part Number Description
MP501AS02 Mincon MQ50 (3 1/2″ A.P.I. Reg. Pin)
1 MP501BH01 Backhead (3 1/2″ A.P.I. Reg. Pin)
2 MB506CH01 Choke Blank
3 MB502CV01 Check Valve
4 MB503SP01 Spring
5 MP504SM01 Steel Make-Up Ring
6 MP505LR01 Lock Ring
7 MP507DR01 Air Distributor
8 MB521OR01 O Ring
9 MB523OR01 O Ring
10 MP509SR01 Seating Ring
11 MP508IC01 Inner Cylinder
12 MP510PN02 Piston
13 MP511WS02 Wear Sleeve
14 MP512PR01 Piston Retaining Ring
15 MP517BB02 Aligner
16 MD621OR01 O Ring
17 MD621OR01 O Ring
18 MP513BR01 Bit Retaining Ring
19 MB522OR01 O Ring
20 MP514CK01 Chuck (QL50)
21 MB525OK01 O Ring Kit
22 MB526SK05 Service Kit
MB526SK05 Service Kit
2 MB506CH01 Choke Blank
MB506CH02 Choke 1/8″ (3.2mm)
MB506CH03 Choke 3/16″ (4.8mm)
4 MB503SP01 Spring
MB525OK05 O Ring Kit
MB525OK05 O Ring Kit
8 MB521OR01 O Ring
9 MB523OR01 O Ring
16 MD621OR01 O Ring
17 MD621OR01 O Ring
21 MB522OR01 O Ring

5 0 MQ50 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.
127 5 Concave 50MQ50C58 8 – 5/8″ 4 – 1/2″ 3 – 1/2″ 2 15.9 35
130 5.125 Concave 51MQ50C58 8 – 5/8″ 4 – 1/2″ 3 – 1/2″ 2 15.9 35
133 5.25 Concave 52MQ50C58 8 – 5/8″ 4 – 9/16″ 3 – 9/16″ 2 16.3 36
140 5.5 Concave 54MQ50C58 8 – 5/8″ 4- 9/16″ 4- 9/16″ 2 17.3 38
140 5 1/2 Concave 54MQ50C59 9 – 5/8″ 6 – 9/16″ 6- 9/16″ 3 17.3 38
140 5 1/2 Flat Face 54MQ50F58 8 – 5/8″ 7 – 5/8″ 2 17.3 38
140 5 1/2 Flat Face 54MQ50F59 9 – 5/8″ 9 – 9/16″ 3 17.3 38
140 5 1/2 Convex 54MQ50V59 9 – 5/8″ 6- 9/16″ 4- 9/16″ 3 17.3 38
146 5 3/4 Concave 56MQ50C58 8 – 5/8″ 4- 5/8″ 4- 5/8″ 2 17.7 39
140 5 3/4 Concave 56MQ50C59 9 – 5/8″ 6 – 9/16″ 6- 9/16″ 3 17.7 39
146 5 3/4 Flat Face 56MQ50F58 8 – 5/8″ 8 – 5/8″ 2 17.7 39
140 5 3/4 Convex 56MQ50V59 9 – 5/8″ 3 – 5/8″ 5 – 5/8″ 3 17.7 39
149 5 7/8 Concave 60MQ50C58 8 – 5/8″ 4 – 5/8″ 4 – 5/8″ 2 18.6 41
152 6 Concave 60MQ50C58 8 – 5/8″ 4 – 5/8″ 4 – 5/8″ 2 18.6 41