DA, DB Geared Hysteresis Synchronous Motor

Product catalog summary

Synchronous Motor Family Overview
The DA and DB Series are heavy-duty reversible hysteresis synchronous motors designed for applications requiring high gear torque and compact size. They offer a wide range of shaft speeds from 120 RPM to 24 RPD, with a maximum torque rating of 100 oz-in (706.2 mN-m). The DA case size is 2.5 inches in diameter and 1.75 inches in depth, with an additional 0.25 inches for the DB case size.

Materials and Construction
The gear train is constructed with high-quality bronze bearings, brass gears, and hardened steel pinions and wheel shafts. A capacitor is necessary for operation and is included with 115V motors.

Specifications

Output Speed: 120 RPM to 24 RPD
Insulation Class: Class A (105°C)
Lead Wire: 4 leads, 22AWG, approximately 9 inches long
Operating Ambient Temperature: -10°C to +40°C
Temperature Rise: 40°C Max
Shaft Bearing: Sleeve Bearing

Certifications

Recognition: E37163, Component Time Indicating and Recording Appliances, 115Vac 60 Hz Standard Rotor
Certification: Card No. 42576, Motors and Generators, 115 Vac, 60 Hz, Standard Rotor, 3 watts max

Model Specifications
The document provides detailed specifications for various models, including part numbers, reduction ratios, rated torque, output speeds, input power, voltage requirements, capacitor values, and weights. For example, model DA 991139 has a reduction of 3000, rated torque of 100 oz-in, output speed of 1 RPM, and operates at 115 VAC with a capacitor value of 0.62 mfd.

Catalog excerpts

DA, DB Geared Hysteresis Synchronous Motor-1

SYNCHRONOUS MOTOR FAMILY Series DA, DB Reversible Hysteresis Synchronous Motor Output Speed: Insulation Class: Lead Wire: Operation Ambient Temp: Temperature Rise: Shaft Bearing: 120 RPM to 24 RPD Class A (105°C) 4 leads 22AWG (approx. 9 inches [228.6 mm]) -10°C to +40°C (approx.) 40 °C Max Sleeve Bearing E37163, Component Time Indicating and Recording Appliances, Recognition: 115Vac 60 Hz Standard Rotor Card No. 42576, Motors and Generators, Certification: 115 Vac, 60 Hz, Standard Rotor, 3 watts max. Capacitor is required for operation. Capacitor supplied with 115 Vac motors. Note: Typical data subject to change without notification Heavy duty DA and DB Series gear motors maintain timing accuracy and are offered in a very broad range of shaft speeds from 120 RPM through 24 RPD. These motors are recommended especially for applications requiring high gear torque ratings (100 oz-in [706.2 mN-m] maximum) and small size (DA case size: 2.5" [63.5 mm] dia. x 1.75" [44.5 mm] depth). Add 0.25" [6.35 mm] to depth for DB case size. Gear train materials include high quality bronze bearings, brass gears, hardened steel pinions and wheel shafts. Notes: • A capacitor is required for operation and is supplied with 115V motors. Hurst 1551 East Broadway Street Princeton, IN 47670 MOTOR SPECIFICATION SHEET

Open the catalog to page 1

DA, DB Geared Hysteresis Synchronous Motor-2

Part Number Rated Rated Output Output Output Input Torque Torque Speed Speed Speed Power (oz-in) (mN-m) (RPM) (RPH) (RPD) (watts) 100 Voltage Capacitor Capacitor (VAC) not Value (mfd) 60HZ supplied Hurst 1551 East Broadway Street Princeton, IN 47670 MOTOR SPECIFICATION SHEET

Open the catalog to page 2