Keya Frameless Torque Motors Power Next-Gen Quadruped Robots with Unmatched Power Density

Breaking Barriers in Legged Robotics: The Frameless Motor Advantage

Modern quadruped robots demand actuators that combine explosive force with surgical precision. Keya’s WK-series frameless torque motors, delivering 2.3N·m continuous torque in a 60mm diameter package, are enabling robots to achieve 98% slope traversal success rates in search-and-rescue missions.

5 Revolutionary Features of Keya Frameless Motors

1. Ultra-Compact Architecture

• No-frame design eliminates 72% of traditional motor mass

• Direct rotor integration cuts joint assembly size by 54%

• Case study: Reduced Boston Dynamics-style hip joint weight to 220g

2. Precision Redefined

3. Battlefield-Proven Resilience

• Survives 15G shock impacts (military robot certification)

• -20℃ cold start capability tested in Antarctic trials

Case Study: Urban Search & Rescue Quadruped

Challenge

• Navigate 35° rubble piles with 8kg payload

• Maintain stable gait at 2.5m/s

• 72-hour continuous operation requirement

Keya Solution

1. Deployed 12× WK motors (3 per leg) with CANopen daisy-chaining

2. Customized control parameters:

• Stance phase: Torque mode (2.3N·m holding force)

• Swing phase: Position mode (0.03° repeatability)

3. Integrated absolute magnetic encoders for slip detection

Results

• 40% lighter leg structure vs. frameless competitors

• 92% energy efficiency at 3000RPM operation

• Zero maintenance over 5,000km test distance

Technical Specifications Deep Dive

Why Robotics Teams Choose Keya

1. Dynamic Response Mastery

• 0-3000RPM acceleration in 0.8 seconds

• Torque ripple <1.5% even at 10RPM

2. Military-Grade Protection

• Built-in safeguards:

• Phase-to-phase short circuit protection

• Over-temperature derating

• Voltage spike absorption

3. Customization Ecosystem

• 48-hour rapid prototyping service

• Optional liquid cooling jackets (patent pending)

For rapid prototyping support or bulk OEM orders, contact Keya’s robotics engineering team at contact us.