Baldor Electric Motors is no longer manufacturing this motor, possible replacement is the following Baldor Electric Motors part#
EJMM4106T
**** This motor has been replaced by model # EJMM4106T ***
JMM4106T, 20 Hp, 3600 Rpm, 256JM FR, 208-230/460 Vac, 3 PH, TEFC, Foot Mounted, Close-Coupled Pump Motor