Mincon MR116 RC Hammer (4″ Remet)

The MR range of RC hammers is designed to perform at the top end of the performance scale compared to other tools on the market. With extensive testing over an 18 months period the MR range of tools offers some very significant benefits over it’s predecessor, the MX range of RC hammers.
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Performance improvements show up to 20% increase in production in both grade control and exploration applications vs. the Mincon MX range. As with all Mincon hammers the tools performed extremely well in deep hole drilling in dry applications and where there is a lot of water in the bore hole. With a variable length available on the chuck sleeve the hammer can be easily set up for either dry or wet hole drilling. Set to become the standard by which RC hammers will be measured, the Mincon MR range of tools get the job done.

Key Features and Benefits

  • Patented mounting system for fixed internal components.
  • An extremely sturdy shank with a short length allows for greater transfer of energy between the piston and bit.
  • Variable chuck sleeve lengths for varying drilling conditions.
  • Single piece sample tube assembly.
  • Specially heat treated sample tubes offer superior wear resistance vs. our competitors.
  • Variable sample tube bore sizes allows the contractor greater flexibility in setting up his tool.
  • 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.
  • Metal sprayed chuck sleeve and wear sleeve options for greater wear resistance on outside circulation.
  • All critical internal components are heat treated under strict control to maximize tool longevity.
  • Ease of service with no special assembly or disassembly tools required.

For more information:

+40 314 253 800
info@romned.ro

Ron van Dam
CEO

Specifications Metric Imperial
Hammer Outside Diameter 116mm 4.57″
Hammer Length (Less Drill Bit) 1143mm 45.0″
Backhead Spanner Flat Size 94mm 4″
Drill Bit Shank Type MR116
Backhead Thread 4 ” Remet
Drill Bit Size Range 121mm – 127mm 4.75″ – 5″
Hammer Weight (Less Bit) 65 Kgs 143 Lbs
Maximum Drill Bit Weight 14 Kgs 30.9 Lbs
Piston Weight 14 Kgs 30.9 Lbs
Make up Torque 4650-6237 NM 3430-4600 FT Lbs
Backhead Stand Off 0.75mm 0.030″
Recommended Minimum Air Package 25.5m3/min @ 24.1Bar 900cfm @ 350psi
Item Part No Description
MR116AS01 MR116 Hammer 4 ” Remet
1 1300-0780 Internal Circlip
2 BS 226 O Ring x 2
3 MX5053AT01 Adaptor Tube 4 Remet
4 BS 224 O Ring x 2
5 BS 040 O Ring
6 MX5053SC01 Airscreen
7 MR116BH01 Back Head 4 Remet
8 BS 241 O Ring
9 8406-175 Check Valve Seal
10 MR120CV01 Check Valve Plunger
11 MR120SP01 Check Valve Spring
12 MR120SS01 Spacer
13 MX4550LR01 Lock Ring
14 MR116ST01 Sample Tube
MR116ST03 Sample Tube
15 BS 139 O Ring
16 MR116DR01 Sample Tube Mount
17 BS 135 O Ring
18 BS 233 O Ring x 2
19 BS 040 O Ring
20 MR116SR01 Seating Ring
21 MR116IC01 Inner Cylinder
22 MR116PN01 Piston
23 MR116WS01 Wear Sleeve
24 MR116PR01 Piston Retaining Ring
25 MR116BB01 Aligner Bearing Bush
26 N7 88 X 4 O Ring x 2
27 BS 236 O Ring
28 MR116BR01 Bit Ring
29 BS 152 O Ring
30 MR116CSxxxL Chuck Sleeve
31 MR116CK01 Chuck
MR116OKIT O-ring service kit
MR116MK01 Make up service kit

 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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Diameter Face Type Part Number Description No. x Button Dia (inch) Sample holes Weight Approx.
mm inch Outer Face Centre Kgs. Lbs.
121 4 3/4 Concave 5116121C1 MR116 4 3/4″ CC BIT 8 * 5/8 6 * 9/16 4 * 1/2 2 14 30.9
121 4 3/4 Drop Centre 5116121D2 MR116 4 3/4″ DEEP DC BIT 8 * 5/8 4 * 9/16 2 * 9/16 2 14 30.9
121 4 3/4 Hard Formation 5116121H1 MR116 4 3/4″ HF BIT 8 * 5/8 6 * 9/16 3 * 1/2 2 14 30.9
124 4 7/8 Concave 5116124C1 MR116 4 7/8″ CC BIT 8 * 5/8 6 * 9/16 4 * 1/2 2 14 30.9
124 4 7/8 Drop Centre 5116124D2 MR116 4 7/8″ DEEP DC BIT 8 * 5/8 4 * 9/16 2 * 9/16 2 14 30.9
124 4 7/8 Hard Formation 5116124H1 MR116 4 7/8″ HF BIT 8 * 5/8 6 * 9/16 3 * 1/2 2 14 30.9
127 5 Drop Centre 5116127D2 MR116 5″ DEEP DC BIT 8 * 5/8 4 * 9/16 2 * 9/16 2 14 30.9
127 5 Hard Formation 5116127H1 MR116 5″ HF BIT 8 * 5/8 6 * 9/16 3 * 1/2 2 14 30.9
130 5 1/8 Drop Centre 5116130D2 MR116 5 1/8″ DEEP DC BIT 8 * 5/8 4 * 9/16 2 * 9/16 2 14 30.9
130 5 1/8 Hard Formation 5116130H1 MR116 5 1/8″ HF BIT 8 * 5/8 6 * 9/16 3 * 1/2 2 14 30.9
133 5 1/4 Drop Centre 5116133D2 MR116 5 1/4″ DEEP DC BIT 8 * 5/8 4 * 5/8 2 * 9/16 2 14 30.9
133 5 1/4 Hard Formation 5116133H1 MR116 5 1/4″ HF BIT 8 * 5/8 6 * 5/8 3 * 1/2 2 14 30.9
165 6 1/2 Drop Centre 5116165C1 MR116 6 1/2 COLLARING BIT 8 * 5/8 8 * 5/8 4 * 9/16 2 17 37.5
190 7 1/2 Drop Centre 5116190C1 MR116 7 1/2 COLLARING BIT 8 * 5/8 12 * 5/8 4 * 9/16 2 19 41.9