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!

Bulroc

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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 38 API Reg Pin 2 38 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 38 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 38 API Reg Pin 2 38 API Reg Pin 2 38 API Reg Pin 2 38 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 38 API Reg Pin 3 12 API Reg Pin 3 12 API Reg Pin 3 12 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 12 API Reg Pin 3 12 API Reg Pin 3 12 API Reg Pin 3 12 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 12 API Reg Pin 3 12 API Reg Pin 3 12 API Reg Pin 3 12 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 12 API Reg Pin 4 12 API Reg Pin 4 12 API Reg Pin 4 12 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 58 API Reg Pin 6 58 API Reg Pin 6 58 API Reg Pin 6 58 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 58 API Reg Pin 6 58 API Reg Pin 6 58 API Reg Pin 6 58 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 58 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 12 API Reg Pin 3 12 API Reg Pin 3 12 API Reg Pin 3 12 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 12 API Reg Pin 3 12 API Reg Pin 3 12 API Reg Pin 3 12 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 12 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.