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Brief Introduction
API R series Pumping Units is a new type energy-saving walking beam pumping units, it’s a new type of power equipment on the ground used in sucker rod oil extraction.
The products conform to API Spec.11E “Specification for Pumping Units” and other relative API standards, acquired the authorization to use Official API Monogram

Technical Performances

• (1). High reliability, simple operation, easy maintenance, long service life.
• (2). Use phase angle in crank arm in order to reduce the peak value of max. torque in gear reducer。
• (3). To improve power performance by increase the extreme location angle.
• (4). It can reduce motive power, saved energy obviously.
• (5). Gear reducer is involute herring-bone gearing, work smoothly and reliably.

Main Technical Parameter

No	Type	Polished Rod Capacity （lb）	Stroke Length （in）	Rated Torque in.lb
1	R-912D-365-192	36,500	192、159、127	912,000
2	R-912D-305-192	30,500	192、159、127	912,000
3	R-912D-365-168	36,500	168、139、111	912,000
4	R-912D-305-168	30,500	168、139、111	912,000
5	R-640D-305-192	30,500	192、159、127	640,000
6	R-640D-365-168	36,500	168、139、111	640,000
7	R-640D-305-168	30,500	168、139、111	640,000
8	R-456D-305-168	30,500	168、139、111	456,000
9	R-456D-305-144	30,500	144、119、95	456,000
10	R-456D-305-120	30,500	120、99、80	456,000
11	R-320D-256-144	25,600	144、119、95	320,000
12	R-320D-256-120	25,600	120、99、80	320,000
13	R-320D-256-100	25,600	100、83、67	320,000
14	R-228D-256-100	25,600	100、83、67	228,000
15	R-228D-246-86	24,600	86、72、59	228,000