MR120 RC Hammer Remet, Metzke thread
MR120 RC Hammer
Features:
• Hammer outside diameter: 120mm (4.75″)
• Hammer length: 1,190mm (47″)
• Drill bit size range: 127mm – 143mm (5″ – 5.625″)
• Supported backhead threads: 4″ & 4.5″ Remet, 4″ & 4.5″ Metzke, 115 ARDX
• Recommended minimum air package: 425 L/s @ 24 bar (900 cfm @ 350 psi)
• Shank type: MR120
| Specifications | ||
| Specifications | Metric | Imperial |
| Hammer Outside Diameter | 120mm | 4.75″ |
| Hammer Length (Less Drill Bit) | 1165mm | 45.9″ |
| Backhead Spanner Flat Size | 94mm | 4″ |
| Drill Bit Shank Type | MR120 | |
| Backhead Thread | 4 1/2″ Metzke | |
| Drill Bit Size Range | 127mm – 143mm | 5″ – 5.625″ |
| Hammer Weight (Less Bit) | 70 Kgs | 154 Lbs |
| Maximum Drill Bit Weight | 14.5 Kgs | 32 Lbs |
| Piston Weight | 16 Kgs | 35.3 Lbs |
| Make up Torque | 4826-6440 NM | 3560-4750 FT Lbs |
| Backhead Stand Off | 0.75mm | 0.030″ |
| Recommended Minimum Air Package | 25.5m3/min @ 24.1Bar | 900cfm @ 350psi |
| Item | Part No | Description |
| MR120AL04 | MR120 Hammer 4 1/2″ Metzke – Low Air | |
| 1 | 1300-0780 | Internal Circlip |
| 2 | MX5053AT31 | Adaptor Tube 4 ½ Metzke |
| 3 | BS-224 | O Ring x 2 |
| 4 | BS-040 | O Ring |
| 5 | MX5053SC01 | Air Screen |
| 6 | MR120BH31 | Back Head 4 ½” Metzke |
| 7 | BS-241 | O Ring |
| 8 | 8406-175 | Check Valve Seal – Nitrile U |
| 9 | MR120CV01 | Check Valve Plunger |
| 10 | MR120SP01 | Check Valve Spring |
| 11 | MR120SS01 | Spacer |
| 12 | MX4550LR01 | Lock Ring |
| 13 | MR120ST01 | Sample Tube – Large Bore |
| MR120ST03 | Sample Tube – Small bore | |
| 14 | BS 228 | O Ring |
| 15 | MR120DR02 | Sample Tube Mount |
| 16 | BS 234 | O Ring |
| 17 | BS 040 | O Ring |
| 18 | MX5053SR01 | Seating Ring |
| 19 | MR120IC01 | Inner Cylinder |
| 20 | MR120PN01 | Piston |
| 21 | MR120WS01 | Wear Sleeve |
| 22 | MX5053PR01 | Piston Retaining Ring |
| 23 | MR120BB01 | Aligner Bearing Bush |
| 24 | N7-92×4 | O Ring x 2 |
| 25 | BS 237 | O Ring |
| 26 | MR120BR01 | Bit Ring |
| 27 | BS 152 | O Ring |
| 28 | MR120CK01 | Chuck |
| 29 | MR120CSxxxLMR120CSxxxL | Chuck Sleeve |
| MR120OKIT | O Ring Kit | |
| MR120MK01 | Make up kit |
| RC Bits Specifications | ||||||||||
| Diameter | Face Type | Part Number | Description | No. x Button Dia (inch) | Sample holes | Weight Approx. | ||||
| mm | inch | Outer | Face | Centre | Kgs. | Lbs. | ||||
| 127 | 5 | Drop Centre | 5120127D1 | MR120 5″ DC BIT | 8 * 5/8 | 4 * 9/16 | 3 * 1/2 | 2 | 15 | 33.1 |
| 127 | 5 | Hard Formation | 5120127H1 | MR120 5″ HF BIT | 8 * 5/8 | 6 * 9/16 | 3 * 1/2 | 2 | 15 | 33.1 |
| 130 | 5 1/8 | Concave | 5120130C1 | MR120 5 1/8 CC BIT | 8 * 5/8 | 4 * 9/16 | 4 * 1/2 | 2 | 15 | 33.1 |
| 130 | 5 1/8 | Drop Centre | 5120130D2 | MR120 5 1/8 DEEP DC BIT | 8 * 5/8 | 4 * 9/16 | 3 * 1/2 | 2 | 15 | 33.1 |
| 130 | 5 1/8 | Hard Formation | 5120130H1 | MR120 5 1/8 HF BIT | 8 * 5/8 | 6 * 9/16 | 3 * 1/2 | 2 | 15 | 33.1 |
| 133 | 5 1/4 | Concave | 5120133C1 | MR120 5 1/4 CC BIT | 8 * 5/8 | 4 * 5/8 | 4 * 1/2 | 2 | 15 | 33.1 |
| 133 | 5 1/4 | Drop Centre | 5120133D2 | MR120 5 1/4 DEEP DC BIT | 8 * 5/8 | 4 * 9/16 | 3 * 1/2 | 2 | 15 | 33.1 |
| 133 | 5 1/4 | Hard Formation | 5120133H1 | MR120 5 1/4 HF BIT | 8 * 5/8 | 6 * 9/16 | 4 * 1/2 | 2 | 15 | 33.1 |
| 137 | 5 3/8 | Concave | 5120137C1 | MR120 5 3/8 CC BIT | 8 * 5/8 | 4 * 5/8 | 4 * 1/2 | 2 | 15 | 33.1 |
| 137 | 5 3/8 | Drop Centre | 5120137D2 | MR120 5 3/8 DEEP DC BIT | 8 * 5/8 | 4 * 5/8 | 3 * 1/2 | 2 | 15 | 33.1 |
| 137 | 5 3/8 | Hard Formation | 5120137H1 | MR120 5 3/8 HF BIT | 8 * 5/8 | 6 * 5/8 | 3 * 1/2 | 2 | 15 | 33.1 |
| 140 | 5 1/2 | Concave | 5120140C1 | MR120 5 1/2 CC BIT | 8 * 5/8 | 4 * 5/8 | 4 * 1/2 | 2 | 15 | 33.1 |
| 140 | 5 1/2 | Drop Centre | 5120140D2 | MR120 5 1/2 DEEP DC BIT | 8 * 5/8 | 4 * 5/8 | 3 * 1/2 | 2 | 15 | 33.1 |
| 140 | 5 1/2 | Hard Formation | 5120140H1 | MR120 5 1/2 HF BIT | 8 * 5/8 | 6 * 5/8 | 4 * 1/2 | 2 | 15 | 33.1 |
| 143 | 5 5/8 | Drop Centre | 5120143D2 | MR120 5 5/8 DEEP DC BIT | 8 * 5/8 | 4 * 5/8 | 3 * 1/2 | 2 | 15 | 33.1 |
| 143 | 5 5/8 | Hard Formation | 5120143H1 | MR120 5 5/8 HF BIT | 8 * 5/8 | 6 * 5/8 | 4 * 1/2 | 2 | 15 | 33.1 |
| 152 | 6 | Drop Centre | 5120152C1 | MR120 6″ COLLARING BIT | 8 * 5/8 | 6 * 9/16 | 4 * 1/2 | 2 | 16 | 35.3 |
| 165 | 6 1/2 | Drop Centre | 5120165C1 | MR120 6 1/2 COLLARING BIT | 8 * 5/8 | 8 * 9/16 | 4 * 9/16 | 2 | 18 | 39.7 |
| 190 | 7 1/2 | Drop Centre | 5120190C1 | MR120 7 1/2 COLLARING BIT | 8 * 5/8 | 12 * 5/8 | 4 * 6/16 | 2 | 21 | 46.3 |
