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Model Nomenclature







              E & H Series Stepper Motor


                                 E  3  3  H  C  H  P  –  L  E  K  –  M2  –  01


             Basic series                                                          Special Sequence
             H = Standard construction                                             00 = Standard motor without shaft seal
             E = SIGMAX construction (n/a half stack)
                                                                                   01 = Standard motor with shaft seal (size 3 and 4 only)
             Size                                                                  Other numbers will be assigned for special motors
             2 = NEMA 23                                                           Encoder Option
                frame size (2.25” dia,)                                            NS = No feedback
             3 = NEMA 34                                                           All options below require
                frame size (3.38”dia.)                                             construction R or C
   MODEL NOMENCLA
             4 = NEMA 42                                                           M1 = Encoder mounting provision
                frame size (4.28” dia.)                                                      (size 2 only). Requires shaft configuration E
   TURE
                                                                                   HD = 500 LPR encoder (size 2 only)
             Number of Rotor Stacks                                                HJ = 512 LPR encoder (size 2 only)
             H = Half stack (H series only)                                        M2 = HP encoder mounting provision
             1 = 1 stack                                                                     (size 3,4 only). Requires shaft configuration E
                                                                                   M3 = BEI encoder mounting provision
             2 = 2 stacks
                                                                                             (size 3,4 only). Requires shaft configuration D
             3 = 3 stacks (size 3,4 only)                                          SS = Special, contact customer support
             4 = 4 stacks (size 3 only)
             Mounting                                                              Shaft Modifications
                                                                                   N = Smooth (size 2,3 only)
             N = NEMA (n/a 4  stacks)
             H = Heavy duty NEMA                                                      (mounting config. N only)
                (opt. on 3 stacks, std. on 4 stacks)                               F = Flat (size 2,3 only)
                                                                                      (mounting config. N only)
             S = Special, contact customer support
                                                                                   K = Straight key (size 3,4 only)
             Construction/Connection Style                                            (mounting config. H only)
             R = Regular/leadwire                                                  W = #303 Woodruff key (size 3 only)
             C = System MS connector                                                  (mounting config. N only)
             L = Splashproof/to terminal board via conduit                         S = Special
                   connector: 1/2” NPS pipe thread (size 3,4 only)                  Shaft Configuration
             M = Splashproof/to terminal board via conduit connect:
                    metric PG11 pipe thread (size 3,4 only)                        (Diameter & Length)
             S = Special, contact customer support                                 N = Single
                                                                                   D = Double (R or C construction only)
             Number of Connections                                                 E = Double ended for encoder (R or C
                                                                                   construction only, size 3,4 only)
             F = 8 lead
             L = 4 lead series                                                     S = Special, contact customer support
             H = 4 lead parallel                                                   Rotor Type
             E = 6 lead
                                                                                   L = Laminated
             Winding Type                                                          J = Low inertia (size 2 only, n/a
                                                                                   with half stack motors)
             T = Max, torque at low speed
             P = Max. torque torque at high speed
             A, B and C = Additional standards                         Note: Options shown in blue text are considered standard.
             S = Special, contact customer support





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