Oil Lubricated Motors | Dynomax Drilling Tools

Industry leaders

Dynomax is a supplier of leading performance drilling products engineered for the oil and gas industry.

Dynomax Oil Lubricated Motors are engineered and designed for durability and consistency in any drilling application.

We offer a wide variety of rotor and stator configurations to provide optimum torque and rpm for the available flow rate and desired differential pressure.

Our Mud Motor’s leading design provides the option of either adjustable or fixed bent housings, near bit stabilizers or kick pads, and any combination of float, dump or circulating subs.

Oil Lubricated Motors are available in sizes ranging from 2-1/8” (54mm) to 11-1/4” (286mm).

Zero Bypass Rotary-Steerable specific configurations are also available!

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DYNOMAX MoTOR E BROCHURE

DYNOMAX RS Motor Configuration e Brochure

Name	OD [in]	Bit Size Range [in]		Bit Box Connection	Dynamic Bearing Load [lb]	Static Bearing Load [lb]	Overpull for Rerun [lb]	Absolute Overpull [lb]	Bit to Bend - Adjustable [in]	Bit to Bend - Fixed [in]
2.125 in SERIES 1	2.125	2.75	3.5	1-1/2 REG	7,531	17,085	17,085	52,000	N/A	N/A
2.375 in SERIES 1	2.375	3	3.5	1-1/2 REG	8,800	21,300	20,000	118,000	35	N/A
2.875 in SERIES 2	2.875	3.625	4	2-3/8 REG	21,505	64,875	49,100	81,800	40.2	N/A
3.12 in SERIES 1	3.13	3.875	4.5	2-3/8 REG	28,230	83,280	154,100	256,800	42.9	34
3.38 in SERIES 1	3.38	4	4.75	2-3/8 REG	20,527	86,786	92,400	154,000	41.3	N/A
3.5 in SERIES 1	3.5	4	4.75	2-3/8 REG	20,527	86,786	111,000	185,000	41.3	N/A
3.75 in SERIES 1	3.75	4.75	5.875	2-7/8 REG	31,850	104,100	154,100	256,800	50.6	41.5
5 in SERIES 2	5.15	5.625	6.75	3-1/2 REG	71,500	229,350	328,000	546,000	56.3	45.7
5.5 in SERIES 1	5.5	6.75	8.5	3-1/2 REG	82,090	289,185	243,000	405,000	57.4	47
6.5 & 6.75 in SERIES 1	6.56	7.875	9.875	4-1/2 REG	128,500	404,500	406,900	678,200	73	61.1
6.5 & 6.75 in SERIES 3	6.56	7.875	9.875	4-1/2 REG	131,700	420,400	328,000	546,000	64.97	52.97
6.75 in SERIES 2 SHORT	7	8.5	9.875	4-1/2 REG	162,100	510,500	602,600	1,004,400	66	54
7 in SERIES 3	7.06	8.5	9.875	4-1/2 REG	151,925	509,765	509,765	742,200	68	56
8 in SERIES 1	8.06	9.875	12.25	6-5/8 REG	162,510	573,485	554,100	923,500	87	72.3
8 in SERIES 2	8.06	9.875	12.25	6-5/8 REG	162,510	573,485	554,100	923,500	74.7	60.1
9.62 in SERIES 1	9.63	12.25	17.5	6-5/8 or 7-5/8 REG	240,975	852,600	741,100	1,235,100	87.3	87.3
11.25 in SERIES 1	11.25	16	36	7-5/8 REG	385,750	1,376,000	784,500	1,307,500	94.5	N/A

Name	Motor OD [mm]	Bit Size Range [mm]		Bit Box Connection	Dynamic Bearing Load [daN]	Static Bearing Load [daN]	Overpull for Rerun [daN]	Absolute Overpull [daN]	Bit to Bend - Adjustable [m]	Bit to Bend - Fixed[m]
54 mm SERIES 1	54	70	89	1-1/2 REG	3,350	7,600	7,600	23,130	N/A	N/A
60 mm SERIES 1	60	76	89	1-1/2 REG	3,910	9,470	8,900	52,490	0.89	N/A
73 mm SERIES 2	73	92	102	2-3/8 REG	9,570	28,860	21,840	36,390	1.02	N/A
79 mm SERIES 1	80	98	114	2-3/8 REG	12,560	37,040	68,550	114,230	1.09	0.86
86 mm SERIES 1	86	102	121	2-3/8 REG	9,130	38,600	41,100	68,500	1.05	N/A
89 mm SERIES 1	89	102	121	2-3/8 REG	9,130	38,600	49,380	82,290	1.05	N/A
95 mm SERIES 1	95	121	149	2-7/8 REG	14,170	46,310	68,550	114,230	1.29	1.05
127 mm SERIES 2	131	143	171	3-1/2 REG	31,800	102,020	145,900	242,870	1.43	1.16
140 mm SERIES 1	140	171	216	3-1/2 REG	36,520	128,640	108,090	180,150	1.46	1.19
165 & 171 mm SERIES 1	167	200	251	4-1/2 REG	57,160	179,930	181,000	301,680	1.85	1.55
165 & 171 mm SERIES 3	167	200	251	4-1/2 REG	58,580	187,000	145,900	242,870	1.65	1.35
171 mm SERIES 2 SHORT	178	216	251	4-1/2 REG	72,110	227,080	268,050	446,780	1.68	1.37
178 mm SERIES 3	179	216	251	4-1/2 REG	67,580	226,750	226,750	330,150	1.73	1.42
203 mm SERIES 1	205	251	311	6-5/8 REG	72,290	255,100	246,480	410,790	2.21	1.84
203 mm SERIES 2	205	251	311	6-5/8 REG	72,290	255,100	246,480	410,790	1.9	1.53
244 mm SERIES 1	245	311	445	6-5/8 or 7-5/8 REG	107,190	379,260	329,660	549,400	2.22	2.22
286 mm SERIES 1	286	406	914	7-5/8 REG	171,590	612,080	348,960	581,600	2.4	N/A

Benefits

Low Cost of Ownership - our sealed bearing stacks have minimal wear components, meaning inexpensive services when run in standard drilling conditions.
Extreme Versatility - all sizes are easily customizable with a wide variety of stabilizers, kick pads, fixed bent housings, and various styles of float subs. This allows you to operate in a wide range of scenarios while minimizing inventory.
Optimal ROP - with a high torque driveline and high flow internals, our Motors provide unparalleled power to the bit.

Features

Custom designed thrust bearing maximizes load while optimizing space.
Splined drive shaft provides excellent torque capacity; with reduced vibration compared to other driveline styles.
Adjustable bent housing (0° to 3° in 13 increments) or a fixed bent housing.
Flow restrictor that reduces pressure in the bearing assembly to a near balanced condition which extends seal life and minimizes oil loss.
Employs the patented Kalsi Rotary Seal – a seal that has been successfully run in down hole drilling applications for over 20 years.
Includes increased internal drive line dimensions to accommodate high torque required in today’s drilling operations (e.g. Extended and Even Wall power sections).