Bulroc
Bulroc offers an extensive line of DTH hammers including high pressure hammers, deep hole hammers, large diameter hammers, and low pressure valved hammers. The company has had a policy of continuous product development and has been at the forefront of new innovative products since its first DTH hammer was introduced in 1976.
Givens International Drilling Supplies can supply you with a Bulroc hammer for a wide variety of applications. Contact us today!
View Specs
- Valved Low Pressure Hammers
- Hyper High Pressure Hammers
- Hyper Deep Hole Hammers
- Hyper Large Diameter Hammers
Valved Low Pressure Hammers
| Model | BR1 | BR2 | BR3 | BR33 |
|---|---|---|---|---|
| Shank Type | BR1 | BR2 | BR3 | BR33 |
| Outside Diameter (inches) | 2 | 2.44 | 3.07 | 3.225 |
| Hammer Length (inches) | 27.9 | 33 | 30.2 | 30.2 |
| Hammer Weight (pounds) | 17.6 | 28.6 | 48.5 | 55 |
| Backhead Connection* | RD40 Box | RD40 Box | 2 3⁄8 API Reg Pin | 2 3⁄8 API Reg Pin |
| Air Consumption (cfm) |
100 psi: 17.79 150 psi: 32.69 200 psi: 50.32 250 psi: 70.33 |
100 psi: 26.65 150 psi: 48.96 200 psi: 75.38 250 psi: 105.35 |
100 psi: 38.33 150 psi: 70.42 200 psi: 108.41 250 psi: 151.51 |
100 psi: 58.86 150 psi: 98.95 200 psi: 152.34 250 psi: 212.9 |
| Spec Sheet | Download | Download | Download | Download |
*Other backhead thread connections are available.
| Model | BR4 |
|---|---|
| Shank Type | BR4 |
| Outside Diameter (inches) | 3.75 |
| Hammer Length (inches) | 35.9 |
| Hammer Weight (pounds) | 76 |
| Backhead Connection* | 2 3⁄8 API Reg Pin |
| Air Consumption (cfm) |
100 psi: 67.04 150 psi: 123.15 200 psi: 189.61 250 psi: 264.98 |
| Spec Sheet | Download |
*Other backhead thread connections are available.
Hyper High Pressure Hammers
| Model | Hyper 31 | Hyper 31 | Hyper 41 | Hyper 41 |
|---|---|---|---|---|
| Shank Type | Mach 33 | IR 3.5 | DHD 340A | SD4 |
| Outside Diameter (inches) | 3.12 | 3.12 | 3.75 | 3.75 |
| Hammer Length (inches) | 34.56 | 34.56 | 39 | 39 |
| Hammer Weight (pounds) | 52.8 | 52.8 | 81.4 | 81.4 |
| Backhead Connection* | 2 3⁄8 API Reg Pin | 2 3⁄8 API Reg Pin | 2 3⁄8 API Reg Pin | 2 3⁄8 API Reg Pin |
| Air Consumption (cfm) |
150 psi: 96 200 psi: 148 250 psi: 206 350 psi: 271 |
150 psi: 96 200 psi: 148 250 psi: 206 350 psi: 271 |
150 psi: 150 200 psi: 232 250 psi: 325 350 psi: 427 |
150 psi: 150 200 psi: 232 250 psi: 325 350 psi: 427 |
| Spec Sheet | Download | Download | Download | Download |
*Other backhead thread connections are available.
| Model | Hyper 41 | Hyper 51 | Hyper 51 | Hyper 51 |
|---|---|---|---|---|
| Shank Type | Mach 44 | DHD 350R | SD5 | Mach 50 |
| Outside Diameter (inches) | 3.75 | 4.5 | 4.5 | 4.5 |
| Hammer Length (inches) | 39 | 43.94 | 43.94 | 43.94 |
| Hammer Weight (pounds) | 81.4 | 129 | 129 | 129 |
| Backhead Connection* | 2 3⁄8 API Reg Pin | 3 1⁄2 API Reg Pin | 3 1⁄2 API Reg Pin | 3 1⁄2 API Reg Pin |
| Air Consumption (cfm) |
150 psi: 150 200 psi: 232 250 psi: 325 350 psi: 427 |
150 psi: 214 200 psi: 329 250 psi: 459 350 psi: 604 |
150 psi: 214 200 psi: 329 250 psi: 459 350 psi: 604 |
150 psi: 214 200 psi: 329 250 psi: 459 350 psi: 604 |
| Spec Sheet | Download | Download | Download | Download |
*Other backhead thread connections are available.
| Model | Hyper 51 | Hyper 51HD | Hyper 51HD | Hyper 51HD |
|---|---|---|---|---|
| Shank Type | QL50 | DHD 350R | SD5 | Mach 50 |
| Outside Diameter (inches) | 4.5 | 4.65 | 4.65 | 4.65 |
| Hammer Length (inches) | 43.94 | 43.94 | 43.94 | 43.94 |
| Hammer Weight (pounds) | 129 | 143.66 | 143.66 | 143.66 |
| Backhead Connection* | 3 1⁄2 API Reg Pin | 3 1⁄2 API Reg Pin | 3 1⁄2 API Reg Pin | 3 1⁄2 API Reg Pin |
| Air Consumption (cfm) |
150 psi: 214 200 psi: 329 250 psi: 459 350 psi: 604 |
150 psi: 214 200 psi: 329 250 psi: 459 350 psi: 604 |
150 psi: 214 200 psi: 329 250 psi: 459 350 psi: 604 |
150 psi: 214 200 psi: 329 250 psi: 459 350 psi: 604 |
| Spec Sheet | Download | Download | Download | Download |
*Other backhead thread connections are available.
| Model | Hyper 51HD | Hyper 63 | Hyper 63 | Hyper 63HD |
|---|---|---|---|---|
| Shank Type | QL50 | DHD 360 | SD6 | DHD 360 |
| Outside Diameter (inches) | 4.65 | 5.62 | 5.62 | 5.7 |
| Hammer Length (inches) | 43.94 | 52 | 52 | 48.38 |
| Hammer Weight (pounds) | 143.66 | 216 | 216 | 235 |
| Backhead Connection* | 3 1⁄2 API Reg Pin | 3 1⁄2 API Reg Pin | 3 1⁄2 API Reg Pin | 3 1⁄2 API Reg Pin |
| Air Consumption (cfm) |
150 psi: 214 200 psi: 329 250 psi: 459 350 psi: 604 |
150 psi: 339 200 psi: 522 250 psi: 730 350 psi: 958 |
150 psi: 339 200 psi: 522 250 psi: 730 350 psi: 958 |
150 psi: 339 200 psi: 522 250 psi: 730 350 psi: 958 |
| Spec Sheet | Download | Download | Download | Download |
*Other backhead thread connections are available.
| Model | Hyper 63HD | Hyper 81 | Hyper 81 | Hyper 81 |
|---|---|---|---|---|
| Shank Type | SD6 | DHD 380 | SD8 | QL80 |
| Outside Diameter (inches) | 5.7 | 7.25 | 7.25 | 7.25 |
| Hammer Length (inches) | 48.38 | 55.47 | 55.47 | 55.47 |
| Hammer Weight (pounds) | 235 | 429 | 429 | 429 |
| Backhead Connection* | 3 1⁄2 API Reg Pin | 4 1⁄2 API Reg Pin | 4 1⁄2 API Reg Pin | 4 1⁄2 API Reg Pin |
| Air Consumption (cfm) |
150 psi: 339 200 psi: 522 250 psi: 730 350 psi: 958 |
150 psi: 485 200 psi: 747 250 psi: 1044 350 psi: 1373 |
150 psi: 485 200 psi: 747 250 psi: 1044 350 psi: 1373 |
150 psi: 485 200 psi: 747 250 psi: 1044 350 psi: 1373 |
| Spec Sheet | Download | Download | Download | Download |
*Other backhead thread connections are available.
| Model | Hyper 101 | Hyper 101 | Hyper 121 | Hyper 121 |
|---|---|---|---|---|
| Shank Type | SD10 | Numa 100 | Numa 120 | SD12 |
| Outside Diameter (inches) | 8.86 | 8.86 | 10.7 | 10.7 |
| Hammer Length (inches) | 62 | 62 | 74.39 | 74.39 |
| Hammer Weight (pounds) | 745 | 745 | 1487 | 1487 |
| Backhead Connection* | 6 5⁄8 API Reg Pin | 6 5⁄8 API Reg Pin | 6 5⁄8 API Reg Pin | 6 5⁄8 API Reg Pin |
| Air Consumption (cfm) |
100 psi: 365 150 psi: 671 200 psi: 1034 250 psi: 1445 |
100 psi: 365 150 psi: 671 200 psi: 1034 250 psi: 1445 |
100 psi: 592 150 psi: 1087 200 psi: 1674 250 psi: 2338 |
100 psi: 592 150 psi: 1087 200 psi: 1674 250 psi: 2338 |
| Spec Sheet | Download | Download | Download | Download |
*Other backhead thread connections are available.
| Model | Hyper 121 | Hyper 121 | Hyper 125/300 | Hyper 125/300 HF |
|---|---|---|---|---|
| Shank Type | DHD 112 | QL120 | Numa 125 | Numa 125 |
| Outside Diameter (inches) | 10.7 | 11.25 | 12 | 12 |
| Hammer Length (inches) | 74.39 | 74.39 | 74.39 | 70.39 |
| Hammer Weight (pounds) | 1487 | 1681 | 1973 | 1853 |
| Backhead Connection* | 6 5⁄8 API Reg Pin | 6 5⁄8 API Reg Pin | 6 5⁄8 API Reg Pin | 6 5⁄8 API Reg Pin |
| Air Consumption (cfm) |
100 psi: 592 150 psi: 1087 200 psi: 1674 250 psi: 2338 |
100 psi: 592 150 psi: 1087 200 psi: 1674 250 psi: 2338 |
100 psi: 592 150 psi: 1087 200 psi: 1674 250 psi: 2338 |
100 psi: 611 150 psi: 1123 200 psi: 1729 250 psi: 2416 |
| Spec Sheet | Download | Download | Download | Download |
*Other backhead thread connections are available.
| Model | Hyper 141 |
|---|---|
| Shank Type | Numa 125 |
| Outside Diameter (inches) | 12.6 |
| Hammer Length (inches) | 76.4 |
| Hammer Weight (pounds) | 2420 |
| Backhead Connection* | 6 5⁄8 API Reg Pin |
| Air Consumption (cfm) |
100 psi: 715 150 psi: 1311 200 psi: 2018 250 psi: 2821 |
| Spec Sheet | Download |
*Other backhead thread connections are available.
Hyper Deep Hole Hammers
| Model | Hyper 55DH | Hyper 55DH | Hyper 66DH | Hyper 66DH |
|---|---|---|---|---|
| Shank Type | QL50 | DHD 350R | DHD 360 | QL60 |
| Outside Diameter (inches) | 4.66 | 4.66 | 5.62 | 5.62 |
| Hammer Length (inches) | 41.78 | 41.78 | 43.03 | 40.9 |
| Hammer Weight (pounds) | 125.6 | 125.6 | 219 | 219 |
| Backhead Connection* | 3 1⁄2 API Reg Pin | 3 1⁄2 API Reg Pin | 3 1⁄2 API Reg Pin | 3 1⁄2 API Reg Pin |
| Air Consumption (cfm) |
150 psi: 182 200 psi: 280 250 psi: 391 300 psi: 514 350 psi: 648 400 psi: 791 430 psi: 910 |
150 psi: 182 200 psi: 280 250 psi: 391 300 psi: 514 350 psi: 648 400 psi: 791 430 psi: 910 |
150 psi: 296 200 psi: 456 250 psi: 637 300 psi: 838 350 psi: 1058 400 psi: 1290 430 psi: 1440 |
150 psi: 296 200 psi: 456 250 psi: 637 300 psi: 838 350 psi: 1058 400 psi: 1290 430 psi: 1440 |
| Spec Sheet | Download | Download | Download | Download |
*Other backhead thread connections are available.
Hyper Large Diameter Hammers
| Model | Hyper 181 | Hyper 181 | Hyper 181 | Hyper 181 |
|---|---|---|---|---|
| Shank Type | Numa 180 | SD18 | QL200 | QL200S |
| Outside Diameter (inches) | 16 | 16 | 16 | 16 |
| Hammer Length (inches) | 86 | 88.75 | 84.5 | 90.66 |
| Hammer Weight (pounds) | 3545 | 3545 | 3545 | 3846 |
| Backhead Connection* | 3 1⁄2 API Reg Pin | 3 1⁄2 API Reg Pin | 3 1⁄2 API Reg Pin | 3 1⁄2 API Reg Pin |
| Air Consumption (cfm) |
100 psi: 1088 125 psi: 1520 150 psi: 1999 175 psi: 2518 200 psi: 3077 225 psi: 3672 |
100 psi: 1088 125 psi: 1520 150 psi: 1999 175 psi: 2518 200 psi: 3077 225 psi: 3672 |
100 psi: 1088 125 psi: 1520 150 psi: 1999 175 psi: 2518 200 psi: 3077 225 psi: 3672 |
100 psi: 1097 150 psi: 2016 175 psi: 2541 200 psi: 3105 225 psi: 3705 |
| Spec Sheet | Download | Download | Download | Download |
*Other backhead thread connections are available.
| Model | Hyper 241 |
|---|---|
| Shank Type | Numa 240 |
| Outside Diameter (inches) | 21 |
| Hammer Length (inches) | 92.7 |
| Hammer Weight (pounds) | 5522 |
| Backhead Connection* | 3 1⁄2 API Reg Pin |
| Air Consumption (cfm) |
100 psi: 2281 125 psi: 3188 150 psi: 4191 175 psi: 5281 200 psi: 6452 225 psi: 7699 |
| Spec Sheet | Download |
*Other backhead thread connections are available.