HARDWARE / PRODUCTAdded 23 Aug 2026

FB-2 Component Gear Set

Harmonic Drive
FB-2 Component Gear Set

The FB-2 Component Gear Set offers high ratio, in-line mechanical power transmissions in extremely compact configurations, making it easier to use than conventional gearing.

Key figurescomparable across the catalogue

Mass
0.1 kg

Normalised to common units so this product can be compared with others in its category. The supplier's own wording is below.

As published by the supplier

Mass
0.1 kg
Gear Backlash
< 3 arc min
Rated torque at 2000rpm (oil lubricant)
14 Nm
Rated torque at 2000rpm (grease lubricant)
18 Nm
Max. Repeated Peak Torque (oil lubricant)
18 Nm
Max. Repeated Peak Torque (grease lubricant)
18 Nm
Max. Load Torque
34 Nm
Max. Momentary input Torque
3.5 kgfm
Max. rotational speed
2000 rpm
Max. Input Speed (Limit for Average Input Speed)
6000 rpm
Moment of Inertia (I)
0.135 x10−4kgm2
Moment of Inertia (J)
0.138 x10−5kgfms2
Lost motion
40.0 arc min
Spring constant
0.35 kgfm/arc min

About

The FB-2 Component Gear Set is designed for applications requiring high ratio, in-line mechanical power transmissions within extremely compact configurations. These pancake component sets simplify integration compared to conventional gearing, requiring only suitable bearing support for the input and output shafts, and a method to fix the circular spline against rotation. Key features include a flat shape, high positioning and rotational accuracies, and low axial width, allowing for easy adaptation to customer-supplied assemblies. The FB component set comprises four essential elements: a Wave Generator (an elliptical bearing assembly), a Flexspline (a non-rigid ring with external teeth), a Circular Spline (a rigid internal gear), and a Dynamic Spline (another rigid internal gear). The rotation of the Wave Generator imparts a rotating elliptical shape to the Flexspline, causing progressive engagement of its external teeth with the internal teeth of both the Circular Spline and the Dynamic Spline. The fixed Circular Spline has two more teeth than the Flexspline, which results in relative rotation of the Flexspline at a reduction ratio determined by the tooth difference. Conversely, the Dynamic Spline, having the same number of teeth as the Flexspline, rotates synchronously with it.

Documentation

Need the full ICD, test reports or a specific revision? Ask the supplier directly.

Source: www.harmonicdrive.net ↗

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