1. API Spec 11E pumping unit 2.Conventional beam pumping unit 3. simple, stable, convenient, long service life pumping unit

characteristics:

"H" section steel structure, high strength and nice load bearing capacity. Middle width roller center bearing, strong endurance. Self-aligning bearings are adopted in equalizer beam bearing and crank pin bearing, reducing installationerrors and the vibration when pumping unit is operating.Hanging structure of the horsehead is “self-abdicating” mechanism , facilitating wellhead operations.Gear reducer adopts herringbone involute or double circular toothed gear, high precision, nice load bearing capacity, and long service life.Brake adopts internal expanding or external structure . The brake has safety devices, which can brake quickly, safe and reliable.Lubrication grease is supplied by central lubrication system, reducing manual maintenance.The unit has comprehensive safety protection, the ladder and all moving parts are equipped with safety guard and safety fences.

Model	Rated polished rod load	Stroke	Rated torque of   reducer
	(lbs)	(in)	(in.lbs)
C-912D-470-240	47,000	240,   211, 181	912,000
C-912D-427-216	42,700	216,   185, 155	912,000
C-912D-427-192	42,700	192,   165, 138	912,000
C-912D-305-192	30,500	192,   165, 138	912,000
C-912D-365-168	36,500	168,   144, 121	912,000
C-912D-305-168	30,500	168,   144, 121	912,000
C-912D-427-144	42,700	144,   123, 102	912,000
C-640D-305-192	30,500	192,   165, 138	640,000
C-640D-305-168	30,500	168,   144, 121	640,000
C-640D-365-144	36,500	144,   123, 102	640,000
C-640D-305-144	30,500	144,   123, 102	640,000
C-640D-256-144	25,600	144,   123, 102	640,000
C-640D-305-120	30,500	120,   102, 84	640,000
C-456D-305-168	30,500	168,   144, 121	456,000
C-456D-305-144	30,500	144,   123, 102	456,000
C-456D-256-144	25,600	144,   123, 102	456,000
C-456D-365-120	36,500	120,   102, 84	456,000
C-456D-305-120	30,500	120,   102, 84	456,000
C-456D-256-120	25,600	120,   102, 84	456,000
C-320D-256-144	25,600	144,   123, 102	320,000
C-320D-256-120	25,600	120,   102, 84	320,000
C-320D-213-120	21,300	120,   102, 84	320,000
C-320D-305-100	30,500	100,   85, 70	320,000
C-320D-256-100	25,600	100,   85, 70	320,000
C-320D-213-86	21,300	86,   71, 56	320,000
C-228D-213-120	21,300	120,   102, 84	228,000
C-228D-173-100	17,300	100,   86, 72	228,000
C-228D-246-86	24,600	86,   71, 56	228,000
C-228D-213-86	21,300	86,   71, 56	228,000
C-228D-200-74	20,000	74,   64, 54	228,000
C-228D-173-74	17,300	74,   64, 54	228,000
C-160D-173-86	17,300	86,   74, 62	160,000
C-160D-200-74	20,000	74,   64, 54	160,000
C-160D-173-74	17,300	74,   64, 54	160,000
C-160D-143-74	14,300	74,   64, 54	160,000
C-160D-173-64	17,300	64,   54, 44	160,000
C-114D-119-86	11,900	86,   72, 59	114,000
C-114D-143-74	14,300	74,   62, 51	114,000
C-114D-173-64	17,300	64,   54, 44	114,000
C-l 14D-143-64	14,300	64,   52, 40	114,000
C-114D-133-54	13,300	54,   45, 36	114,000
C-80D-119-64	11,900	64,   53, 42	80,000
C-80D-133-54	13,300	54,   45, 36	80,000
C-80D-119-54	11,900	54,   45, 36	80,000
C-80D-133-48	13,300	48,   40, 32	80,000
C-80D-109-48	10,900	48,   37, 25	80,000
C-57D-76-54	7,600	54,   41, 28	57,000
C-57D-109-48	10,900	48,   37, 25	57,000
C-57D-95-48	9,500	48,   37, 25	57,000
C-57D-89-42	8,900	42,   33, 23	57,000
C-57D-76-42	7,600	42,   33, 23	57,000

API 11E Standard Beam Pumping Unit