4.16 SECTION FOUR - COMPONENT DESCRIPTION AND SPECIFICATION
4.5. Series 300A Motors Description, Specifications
NOTE
Refer to Section 2.5, Motor Installation, for information on axial and radial
load capability, bearing life, mounting screws and motor-to-load coupling.
4.5.1. Description
Motors are permanent magnet brushless with an integral brushless resolver for position feedback.
The 303 through 306 frame size motors can be face or flange mounted.
All motors incorporate a thermostat or thermistor for thermal protection.
Motors are available with an optional static holding brake.
4.5.2. Specifications
Torque ratings are at 40°C ambient mounted on a 12 × 12 × 0.5 inch (30 × 30 × 1.25 cm) aluminum
heat sink. Ratings are shown in Table 4-4 and Characteristics are shown in Table 4-5 for standard
motors.
TABLE 4- 5. STANDARD SERIES 300A MOTOR RATINGS
MODEL CONTINUOUS
TORQUE, T
c
NO LOAD
SPEED
PEAK TORQUE, T
p
lb. NM rpm lb. in. NM
303-029A 5.5 .62 8600 17 1.92
303-030A 15 1.69 10900 60 6.67
304-111A 12 1.36 7400 50 5.65
304-121A 28 3.16 5650 95 10.73
304-131A 48 5.42 4600 190 21.47
304-141A 73 8.25 2740 380 42.93
304-151A 94 10.62 2675 550 62.15
305-111A 51 5.76 5400 145 16.38
305-121A 74 8.36 4450 220 24.86
