New Large, Hollow-Shaft Gear Unit from Harmonic Drive LLC

Harmonic FSB 2UH

October 9, 2020

The new FBS-2UH gear unit series from Harmonic Drive® features a large, hollow shaft with a compact outer diameter.  The extra large hollow shaft is ideal for robots and machines requiring complex cabling to pass through the axis of rotation.  

The new gear unit design features Harmonic Drive’s “S” tooth profile for optimal tooth engagement resulting in high torque, high-torsional stiffness, long life and smooth rotation.

The FBS-2UH Series is available in two sizes (25, 32) and three ratios (30:1, 50:1, and 100:1).

Key features include:

  • Extra large hollow-shaft diameter is our largest yet for a standard product
  • Compact dimensions for use in robotics
  • Outer diameter and hollow bore optimized for design flexibility and performance
  • Zero Backlash
  • Accuracy <1 arc-min
  • High torsional stiffness
  • High efficiency
  • Smooth operation
  • Robust cross roller output bearing

Information on the FBS-2UH hollow-shaft gear unit can be viewed here

Related Articles



Editor’s Pick: Featured Article

Weidmüller’s u-control 2000: The Automation Controller

Weidmüller’s u-control 2000: The Automation Controller

Weidmüller’s scalable engineering software, u-control 2000, adapts individually to your requirements. And, the u-control is powerful, compact and fully compatible with Weidmüller’s I/O system u-remote. This article looks at what makes u-control the heart of your automation.

Programmable logic controllers (PLCs) are one of the main components of any automated system. A typical control system has inputs, outputs, controllers (i.e., PLCs), and some type of human interaction with the system, a human machine interface (HMI), for example.

Read More



Latest Articles

  • The Future of Barcodes: Understanding the 2027 Digital Transformation

    January 17, 2025 In the world of industrial automation and manufacturing, a significant change is on the horizon. The familiar UPC barcode – a staple of product identification for nearly five decades – is evolving into a more sophisticated system. This transformation, known as “Sunrise 2027,” will revolutionize how businesses handle product identification, tracking, and… Read More…

  • High-Performance Drives for the Food Industry

    January 15, 2025 Food production is subject to the strictest of requirements. Operations in this highly sensitive hygienic environment must run smoothly to manufacture the large volume and diverse range of products efficiently and sustainably. What does this mean for companies that are active on a market characterized by fierce competition and high consumer expectations?… Read More…