ZERO BACKLASH, HIGH TORQUE DENSITY

GSL Series Zero-Backlash Strain Wave (harmonic) Gearboxes

GAM’s GSL series zero-backlash strain wave (harmonic) gearboxes provide zero-backlash and high torque in a small, lightweight gearbox. Collaborate with GAM engineers to customize the GSL series robotic strain wave gear reducers for easy integration into machines and mechanisms.

Features

Drops in for popular competitor gearboxes
Strain wave (harmonic) gearing for high precision
Backlash ≤ 0.5 arcmin (≤ 30 arcsec)
High reduction ratios in a single stage: 50:1 to 160:1
Simple design for integration into a mechanism or machine
High torque density with low inertia
Wide selection of models and configurations
Collaborate with GAM engineers to design a strain wave gearbox assembly for easy integration

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Strain Wave Design

Stain wave gearing has a simple design with 3 main parts:

Cup vs. Hat Style

The terms "Cup" and "Hat" refer to the shape of the Flexspline. When viewed in cross-section, the flexspline looks like a cup or a hat.

Cup Style

Mounting flange output (bottom of the cup) is easy to bolt to for components such as pinions

Hat Style

The flexspline is outermost diameter. Useful for applications requiring a gearbox with a rotating housing such as an AGV wheel or robot joint

Rotation Direction

The GSL strain wave gearbox can be driven in two ways:

Common Operation

Input	Wave Generator
Output	Flexspline
Fixed	Circular Spline
Rotation	Opposite Direction
Ratio	Nominal Ratio, e.g. 50:1

Alternate Operation

Input	Wave Generator
Output	Circular Spline
Fixed	Flexspline
Rotation	Same Direction
Ratio	Nominal Ratio + 1, e.g. 51:1

GSL Series Models

GSL-CS-A & GSL-CS-B

Cup Style Flexspline, Standard Input

Cup-style Flexspline with keyed input
Oldham's coupling input available (-B) to compensate for misalignment
Sizes 014 to 032
Nominal Torque 7.9 to 248 Nm
Technical specs and CAD models

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GSL-HS-A & GSL-HS-B

Hat Style Flexspline, Standard Input

Hat-style Flexspline with standard bore input
Oldham's coupling input available (-B) to compensate for misalignment
Sizes 014 to 032
Nominal Torque 7.8 to 248 Nm
Technical specs and CAD models

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GSL-HS-C

Hat Style Flexspline, Hollow Input

Hat-style Flexspline with hollow input
Sizes 014 to 040
Nominal Torque 7.9 to 432 Nm
Technical specs and CAD models

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GSL-HS-D

Hat Style Flexspline, Shaft Input

Hat-style Flexspline with shaft input
Sizes 014 to 032
Nominal Torque 7.9 to 248 Nm
Technical specs and CAD models

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GSL-HS-E

Basic Hat Style with Hollow Input

Hat-style Flexspline, Hollow Bore
Sizes 014 to 032
Nominal Torque 7.9 to 248 Nm
Technical specs and CAD models

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Compact / Ultra Thin Gearboxes

GSL-CT-A

Cup Style Flexspline, Compact Design

Cup-Style Flexspline with lower profile and smaller diamter than GSL-CS gearbox
Sizes 014 and 017
Nominal Torque 4.8 to 27 Nm
Technical specs and CAD models

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GSL-HT-A

Hat Style Flexspline, Ultra thin

Ha-style flexspline with ulta thin design
Sizes 014 and 017
Nominal Torque 4.8 to 18 Nm
Technical specs and CAD models

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GSLC Components

The component form of the strain wave gearboxes includes only the Wave Generator, Flexspline, Circular Spline. For easy, full integration into your mechanism or machine.