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Integrated performance actuators, designed and manufactured in the US.

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The problem

Physical AI is only as capable as the hardware that goes into it.

Actuators turn intelligence into motion. Today, they’re the bottleneck to innovation in robotics. Harmonic gearboxes carry heavy loads but respond slowly. Quasi-direct-drive designs respond fast but can’t carry heavy loads.

No current design does both.

Better actuators = a better future for allA better future for all

Realizing what’s possible.

Innovation in motion technology is the key to unlocking the full potential of physical AI.
At Bimotal, we’re developing better actuators that balance efficiency, precision, strength, dexterity, and reliability through improved responsiveness and heat management.

ResponsivenessHeat management
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Our approach

To achieve improved responsiveness and heat management, we architect novel topologies; simultaneously optimizing across magnetics, gearboxes, power electronics, and embedded software.

Magnetics
Gearboxes
Power electronics
Embedded software
Our philosophy

Building actuators like chips.

Next-gen actuators demand semiconductor-grade engineering and manufacturing processes to drive forward an entire robotics industry. We’ve taken this approach and applied it to every actuator we develop.

Read our thesis→
Process drives progress

Building actuators like chips.

Chips are built at the scale of nanometers. Gears can benefit from similar levels of precision. Micron-level tolerances enable quieter operation at higher speeds. Combined with novel gearbox designs, those higher speeds deliver more torque and power with less copper.

By trading material for precision, better processes can improve performance without increasing cost.

Sub-micron surface finishing improves gear-mesh efficiency and increases reliability by a factor of two or more. A precision finishing process can cut an actuator’s total cost of ownership in half—significantly lowering a robot’s lifetime operating costs.

01/ 05
01 / 05Isotropic Superfinishing
Isotropic Superfinishing

Sub-micron surface finishes reduce friction and wear, improving efficiency and reliability.

02 / 05Gear Metrology
Gear Metrology

Measures manufactured gears against design specifications, closing the loop between design intent and manufactured parts.

03 / 05Case Carburization
Case Carburization

Hardens gear surfaces to increase durability and torque capacity without increasing gear size.

04 / 05Precision Grinding
Precision Grinding

Shapes gear teeth with micron-level precision for better contact, quieter operation, and greater reliability.

05 / 05Metallography
Metallography

Examines metal microstructure to verify material quality and the results of heat treatment.

The Bimotal difference

Performance by design.

Archive designsPareto optimalHighest-efficiency design
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Motor permutations

Using our proprietary finite element code, to find the best designs for each job.

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More torque density

Than Bosch and Shimano traction drives. Up to 65 Nm/kg on our mid-drive.

Patents

A track record of innovation.

Our founding team has pioneered new motor and drivetrain architectures.

Engineered by a team from
  • stanford
  • cal
  • impossible-aerospace
  • tesla
  • f1
FIG. 3
Tesla / Founder’s prior work
US 12,020,853 B2
FIGS. 3N–3Q
Bimotal / Accelerate
US 2025/0074542 A1
FIG. 2A
Bimotal / Elevate
US 11,820,460 B2
Our process

Made in the US.

  • Designed

    Our process combines first-principles thinking with real world constraints. Proprietary algorithms and rapid iteration get new designs from sketch to prototype fast.

  • Tested

    8 dynamometers continuously test our actuators across the entire performance envelope. Reliability you can count on.

  • Manufactured

    Rotary and linear actuators built and assembled in house.

California made

Bay Area based.

Located in one of the world’s leading robotics hubs, we’re strategically placed to close the loop between design, manufacturing, and our customers.

San Francisco Bay Bridge at sunset

Backed by investors who bet on hardware

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