Stearns® Armature Actuated Brake AAB 321-9

Description
Series 321 provides dynamic stopping or holding torque in a compact package. Mounts to NEMA 56C motors. Fixed air gap design Optional AC Rectifiers - internal, or external in-line (availability depends on size) Class B temperature rise with Class H mag wire Optional “double D” friction discs are available in 3-7 lb-in dynamic and 3-15 lb-in holding brakes. DD shafts fit the brake directly without a brake hub, no shaft keyway cost and simplify assembly UR and CUR recognized insulation system - File E-125303; and sizes 1.8 & 2.8 brakes and 48C & 56C motor frame brakes with internal power supply File E-71115 For applications requiring faster reaction time we also offer a quick set rectifier option
Datasheet
Description
Series 321 provides dynamic stopping or holding torque in a compact package. Mounts to NEMA 56C motors. Fixed air gap design Optional AC Rectifiers - internal, or external in-line (availability depends on size) Class B temperature rise with Class H mag wire Optional “double D” friction discs are available in 3-7 lb-in dynamic and 3-15 lb-in holding brakes. DD shafts fit the brake directly without a brake hub, no shaft keyway cost and simplify assembly UR and CUR recognized insulation system - File E-125303; and sizes 1.8 & 2.8 brakes and 48C & 56C motor frame brakes with internal power supply File E-71115 For applications requiring faster reaction time we also offer a quick set rectifier option
Datasheet

Suppliers

Company
Product
Description
Supplier Links
Armature Actuated Brake - AAB 321-9 - Stearns®
Cudahy, WI, United States
Armature Actuated Brake
AAB 321-9
Armature Actuated Brake AAB 321-9
Series 321 provides dynamic stopping or holding torque in a compact package. Mounts to NEMA 56C motors. Fixed air gap design Optional AC Rectifiers - internal, or external in-line (availability depends on size) Class B temperature rise with Class H mag wire Optional “double D” friction discs are available in 3-7 lb-in dynamic and 3-15 lb-in holding brakes. DD shafts fit the brake directly without a brake hub, no shaft keyway cost and simplify assembly UR and CUR recognized insulation system - File E-125303; and sizes 1.8 & 2.8 brakes and 48C & 56C motor frame brakes with internal power supply File E-71115 For applications requiring faster reaction time we also offer a quick set rectifier option

Series 321 provides dynamic stopping or holding torque in a compact package. Mounts to NEMA 56C motors.

  • Fixed air gap design
  • Optional AC Rectifiers - internal, or external in-line (availability depends on size)
  • Class B temperature rise with Class H mag wire
  • Optional “double D” friction discs are available in 3-7 lb-in dynamic and 3-15 lb-in holding brakes. DD shafts fit the brake directly without a brake hub, no shaft keyway cost and simplify assembly
  • UR and CUR recognized insulation system - File E-125303; and sizes 1.8 & 2.8 brakes and 48C & 56C motor frame brakes with internal power supply File E-71115
  • For applications requiring faster reaction time we also offer a quick set rectifier option
Supplier's Site Datasheet

Technical Specifications

  Stearns®
Product Category Electric Brakes
Product Number AAB 321-9
Product Name Armature Actuated Brake
Torque 3 to 25 Ft-lbs (4.07 to 33.9 N-m)
Power 0.0415 HP
Speed 3600 rpm
Voltage 460 volts
Engagement Friction
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