Nabtesco's New Short Strain Wave Gears Increase Power Density

[Ahmet Ö.]

## Nabtesco's New Short Strain Wave Gears Increase Power Density

Nabtesco has introduced new short strain wave gears that offer higher torque capacity and longer service life in the same mounting space for robotic and precision automation applications.

Strain wave gears are widely used in robotics, medical systems, and precision positioning due to their compact size and zero-backlash characteristics. Nabtesco has added a new series of short strain wave gears to its portfolio that increases torque density and service life without enlarging the mounting space.

### Key Features of the New Short Strain Wave Gears

• Approximately 120% higher power density compared to classic short-construction strain wave gears
• 140% increase in service life, from a standard 7,000 hours to 10,000 hours
• Higher torque capacity in the same size, with repeatable maximum torque, acceleration torque, and limit torque increased by approximately 20%
• Torque range varies from 4.5 Nm to 115 Nm
• Hat type (HTG) and cup type (CTG) models available
• Hollow shaft design in all models for routing cables, hoses, and fluid lines
• Customization options: geometry, material, interfaces, and system integration
• Manufactured in Nabtesco's Limburg, Germany facility, with automotive quality standards and IATF 16949 certification

### Application Areas

Short gears are preferred in applications where axial mounting space is limited but high torque is required. They are particularly suitable for compact actuators in humanoid robots, collaborative robots (cobots), exoskeletons, and medical devices. They are also used in medical engineering for surgical robots, dental milling machines, and optical adjustment mechanisms of imaging systems.

### Design and Industrial Advantages

These new short strain wave gears expand the design options for compact robotic and automation systems by increasing power density and service life without changing external dimensions. Higher torque capacities and longer lifespan lead to reduced downtime and increased equipment availability in robotic systems integrated into digital supply chains.

Nabtesco's innovation overcomes the known limitations of short strain wave structures, offering ideal solutions for applications requiring high dynamic performance.