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  • Direct Drive (DDR) Rotary Table Construction
    the motor is a kit and meant to be part of the machine structure. Torque motors are designed as direct drives. They eliminate the need for gearboxes, worm-gear drives, and other mechanical transmission elements and directly couple the payload to the drive. This makes rotary drives with high dynamic
  • Pressure Washer Pumps: Belt Drive vs. Direct Drive
    A "Direct Drive" pump has a hollow shaft, which simply slides onto the drive shaft of a motor or engine. The flange on the pump is mounted to the face of the engine or shaft end of the motor. Normal gasoline engine speed is about 3450 RPM. Since the pump is connected directly to the engine shaft
  • Direct Drive Bourdon Basics
    . This is. popularly known as a "C-tube". In later forms, the tube sometimes has several revolutions to. increase the movement and is referred to as a "helix-tube". Direct Drive Bourdon Coils Direct Drive Bourdon Basics. by. Bill Barmore, QED/inc. General Manager - Emeritus. Named for its inventor, Eugene
  • Turn to Pneumatics or Direct-Drive Linear?
    -Control Design interviews several engineers about the benefits and cost effectiveness of pneumatics versus direct-drive linear.
  • Direct drive leaves gears behind
    ULT Series brushless, direct-drive motors feature heights as low as 10 mm and diameters up to 165 mm. Torque range is from 30 to 600 oz-in. With high-resolution feedback, the motors can run at speeds up to 250 rpm and position to submicron accuracy. Many applications in semiconductor processing
  • Direct-drive motors: Fast And Accurate
    The fundamentals of motor design have changed little over the course of time, but the technologies used to improve tolerances, and implement new assembly techniques, materials, and stator and rotor geometries are constantly evolving. Direct-drive motors meet the high-torque needs of large inertia
  • Avoiding the runaround with direct-drive rotary motion
    Here's a look at the pros and cons of various direct-drive rotary systems. Manager Danaher Motion Wood Dale, Ill. Frameless DDR motors are best suited to high-performance applications where space is limited or weight is critical. Housed DDR motors are best suited for use on machines that do
  • How to Apply Direct-Drive Linear Servomotors
    A novel direct-drive linear servomotor with only one moving part needs special design considerations. There 's a growing demand for smaller linear motors. Manufacturers have developed new direct- drive linear servos in response. Standard rotary servomotors spin leadscrews or pull belt drives