Harmonic Drive: Gear Units (CSG Series)

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Harmonic Drive: Gear Units (CSG Series)

These gearheads can be easily adapted to any OEM servo motor. Harmonic Drive® gear products offer zero-backlash with gear ratios from 30:1 to 160:1. Precision planetary gearing products are available with gear ratios from 3:1 to 45:1 with backlash maintained below 1 arc-min. High capacity output bearings are utilized for robust and accurate support of loads. Other benefits include flange and shaft output configurations, hollow shaft designs, and sizes ranging from 0.625 inches to over 10 inches in diameter.

CSG Series: Compact Close Couple Style

Harmonic Drive® CSG series gearheads are improved, high-torque versions of the CSF series.
Torque ratings, life and reliability are significantly improved compared to CSF series products of the same size:

30% higher rated torque
30% higher repeated peak torque
30% higher maximum momentary torque
42% longer life (L10 of 10,000 hours)
The external dimensions, mass, torsional stiffness, moment stiffness, positional accuracy, repeatability, input moment of inertia, etc. are all the same as CSF series gearheads.

The CSG-2UH series is a compact precision gearhead which has zero backlash as well as exceptional accuracy and repeatability. The gearhead incorporates a Harmonic Drive gear component into an integral housing. The gearhead also features a high capacity cross roller bearing and output flange to support the load. A New lightweight version is now available which provides the same output torque with a mass averaging 30% lower than the standard series!

Key Features Common to Both Standard and Lightweight Series

High torque capacity
Zero Backlash
Accuracy <1 arc-min
High torsional stiffness
High efficiency
Smooth operation
Robust cross roller output bearing
Output flange for direct mounting of load

Standard Series Features

Higher Capacity Cross Roller Bearing

Lightweight Series Features

30% average lower weight than Standard Series
High Torque to Weight ratio

Applications

Robot: Joint Drive, End Effector
Machine Tool: Tool Changer, 4th and 5th axis
Mobile Robots: Wheel Drive, Robot Arm

Model Specifications

CSG-2UH Series

CSG-2UH is a high torque housed component gear set combined with a precision cross roller output bearing & flange. It is a very compact, robust and easy to use gearhead solution. The CSG-2UH is available in 10 sizes with ratios 30:1 to 160:1. If your application does not require high torque, CSF-2UH standard torque gearhead is also available. There is also a lightweight version, CSG-2UH-LW for applications where weight is a critical factor.

Key Features:

Zero Backlash
Peak Torque: 23Nm to 3419Nm
Accuracy <1 arc-min
High torsional stiffness
High efficiency
Smooth operation
Robust cross roller output bearing
Output flange for direct mounting of load

CSG-2UH-LW Series

LW indicates lightweight. This gearhead is ideal for applications where weight is a critical factor, but high torque and zero backlash are ‘required’. CSG-2UH-LW is a high torque housed component gear set combined with a precision cross roller output bearing & flange. It is a very compact, robust and easy to use gearhead solution. It is available in 10 sizes with ratios 30:1 to 160:1. If your application does not require high torque, CSF-2UH-LW standard torque gearhead is also available, if weight is not a critical factor, see our CSG-2UH standard unit.