Electric Motor Base Dimensions

Drawing shows rigid base.

Electric motor base dimensions. Bases for variable speed applications allow movement while operating to compensate for vibration and varying loads. All dimensions are approxi mate not to be used for construction purposes. See motor mount selection chart type 2 b standard base. Motor bases are fabricated of steel which offers a base of rugged design compact and smooth in appearance.

Increase energy efficiency in belt driven systems while reducing wear on components use one of these bases to adjust your motor position to get the proper belt tension. For c flange motors refer to. The following specifications documents and dimension charts are available as acrobat pdf files. Nema motor dimensions reference chart a ft e r l e t t e r i n d i c a t e s t h e n u m b e r i s a n app r o x i m a te v a l ue.

T h e s e d i m en s i o n s a r e s p e c i f i c t o e a c h m anu f a c t u r e r. Nema shaft u k ey r dim n s 3 8 1 2 5 8 7 8 1 1 8 1 3 8 1 5 8 1 7 8 2 1 8 2 3 8 2 1 2 2 7 8 3 3 8 3 7 8 21 64 29 64 33. Electrical induction motors synchronous speed the speed at which an induction motor operates depends on the input power. For 56h combination foot refer to diagram 1.

Standardized motor dimensions are established by the national electrical manufacturers association nema are tabulated below and apply to all base mounted motors listed herein that carry a nema frame designation. Electrical electrical units amps and electrical wiring wire gauge and awg electrical formulas and motors. Electric motor calculator calculate amps hp and kva. Foot mounting dimensions listed are identical for either rigid or resilient base mounting.

Bases for constant speed applications keep your motor in a fixed position while operating. Dimensions drip proof totally enclosed fan cooled and explosion proof. Bases are design to provide adequate travel are fully adjustable by the use of a single adjusting screw and have elongated mounting holes in the base plate. The following are dimensional size charts for standard electric motor nema standard frames and configuration.