scope:

1 Scope

1.1 This specification covers designs and ratings of beam type pumping unit components. It does not cover chemical properties of materials, nor the use of the equipment.

1.2 The following nomenclature is standard:

a. Pumping unit.

b. Pumping unit structure.

c. Pumping unit gear reducer.

d. Pumping unit chain reducer.

e. Pumping unit beam counterbalance.

f. Pumping unit crank counterbalance.

1.3 Approved forms are given in Appendix A for rating of crank counterbalances and for recording pumping unit stroke and torque factors.

1.4 This specification covers the design and rating of the following:

a. Pumping unit structure.

b. Pumping unit gear reducer.

c. Pumping unit chain reducer.