Nord Drivesystems B 1000 - Table6: Motor Parallel Keys; Table 7: Position of the Half-Coupling on the NEMA Motor Shaft

3 Transport, storage, assembly
B 1000 en-3921 35
6. If the half-coupling contains a setscrew, secure the coupling axially on the shaft. Coat the setscrew
with securing adhesive before screwing it in, e.g. Loctite 242 or Loxeal 54-03, and tighten it with the
correct torque (see chapter 7.3 "Screw tightening torques").
7. Sealing of the flange surfaces is recommended if the motor is installed outside or in a humid
environment. Completely coat the flange surfaces with surface sealant, e.g. Loctite 574 or Loxeal
58-14.
8. Attach the motor to the adapter. Also attach the enclosed ring gear or the enclosed gear sleeve
(see Figure 15: Fitting the coupling onto the motor shaft - various types of coupling). For the
AN360TC and AN400TC adapters, attach the adapter flange to the motor first, and screw the motor
onto the adapter.
9. Tighten the adapter bolts with the correct torque (see chapter 7.3 "Screw tightening torques").
IEC/NEMA type Coupling Shaft ø Motor shaft’s key
AI 160
R42
42
AB12x8x45
AI 180
R48
48
AB14x9x45
AN 250
R42
41.275
B3/8x3/8x1 1/2
AN 280
R48
47.625
B1/2x1/2x1 1/2
AI 200
R55
55
B16x10x50x
AN 320
R55
53.976
B1/2x1/2x1 1/2
AI 225
R65
60
B18x11x70
AN 360 R350
R65
60.325
B5/8x5/8x2 1/4
AI 250
R75
65
B18x11x70
AI 280
R75
75
B20x12x70
AN 360 R450
R75
60.325
B5/8x5/8x3 1/8
AN 400
R75
73.025
B3/4x3/4x3 1/4
Table6: Motor parallel keys
NEMA type Coupling size A [mm]
N250TC R350 R42 83
N250TC 300S R42 86
N280TC R350 R48 87.5
N280TC 300S R48 102.5
N320TC R55 91
N360TC/350 R65 126.5
N360TC/450 R75 150.5
N400TC R75 164.5
Table 7: Position of the half-coupling on the NEMA motor shaft