CubeMars

CubeMars AK45-36 KV80

AK45-36 KV80 robotic actuator, 8 Nm rated and 24 Nm peak torque. 36:1 reduction, 52 rpm no-load speed.

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US$ 222,30US$ 249,30
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Product description

The AK45-36 is a compact, high-reduction robotic actuator. Its 36:1 planetary gearbox gets high torque out of a small body.

Key features

  • 36:1 reduction. High torque from a small body, suited to slow and strong joints.
  • Servo and force control modes. Choose between position-based and force-based control.
  • Automatic PID identification. Parameters are identified with one click in the PC software, which largely removes the need for manual tuning.
  • Built-in protection. Overcurrent, overvoltage, undervoltage and overtemperature protection are inside the housing.

Applications

Typical applications include humanoid robot wrist and ankle joints, walking robot platforms and compact mechanisms that need high torque.

Is it enough for your project?

The AK45-36 delivers 8 Nm continuous and 24 Nm peak torque from a 55 mm diameter body. That is the same torque class as the AK70-10, which weighs almost twice as much. For example, a 3 kg load at the end of a 25 cm arm needs about 7.4 Nm of static torque (3 × 9.81 × 0.25).

The trade-off is speed. Because of the 36:1 reduction, no-load speed is 52 rpm, or about 312 degrees per second. A 90 degree turn takes at least 0.3 seconds without load, and longer under load. It suits slow but strong joints such as the wrist, ankle and gripper, while leg joints that need fast swings are better served by a lower-ratio model.

How it compares to similar models

  • AK45-10 KV75. A similar body size (Ø53 mm) with a 10:1 reduction makes it about three and a half times faster (180 rpm), but its rated torque is 2.5 Nm.
  • AK70-10 KV100. In the same torque class (8.3 Nm rated) it is nine times faster (480 rpm), at 621 g and Ø89 mm.
  • AK40-10 KV170. At 185 g it is one of the lightest models in the series, with a rated torque of 1.3 Nm.

Frequently asked questions

Why is it so slow?

A 36:1 ratio divides the motor speed by 36 and multiplies its torque by the same amount. Low output speed is the price of high torque from a small body.

Can it be turned by hand?

Because of the high reduction, turning the output shaft by hand is harder than on low-ratio models. Keep this in mind for joints that must be moved from outside.

Which control modes does it support?

You can choose between servo control and force-based control. Parameters are identified automatically in the PC software.

Is the driver included?

Yes. The driver board is inside the housing, and the box includes a power and CAN cable and a serial communication cable.

In the box

  • AK45-36 KV80 robotic actuator with integrated driver
  • Power and CAN communication cable
  • Serial communication cable
  • Certificate of conformity

Related products

To complete your setup, see the R-Link, Driver Board and Wiring Package products.

Shipping and delivery

Products in stock are dispatched within 3 business days from our warehouse in Turkey.

Shipping cost and delivery time to your country are shown at checkout. For models not listed in stock, ask our technical team about the lead time.

Returns

To start a return, contact us through our technical team. The product must be unused, undamaged and in its original packaging.

Return conditions for international shipments are confirmed before purchase.

  • Own stockProducts are ready in our warehouse in Turkey, with no wait for import from the manufacturer.
  • Dispatch in 3 business daysYour order is dispatched within three business days.
  • Official distributorWe are an official CubeMars distributor, every product is genuine.
  • Technical supportOur team supports you in English from motor selection to commissioning.

Specifications

Values from the manufacturer's datasheet.

Rated torque (Nm)8
Peak torque (Nm)24
Rated speed (rpm)40
No-load speed (rpm)52
Gear ratio36:1
Backdrive torque (Nm)0.8
Backlash (°)0.2
Rated voltage (V)24
Rated current (A)2
Peak current (A)6.5
KV (rpm/V)80
Torque constant Kt (Nm/A)0.11
Voltage constant Ke (V/kRPM)12.5
Phase resistance (mΩ)1.8
Phase inductance (µH)1.1
Pole pairs14
Winding typeStar
Drive methodFOC
Weight (g)340
DimensionsØ55 × 54 mm
Operating temperature-20 °C to 50 °C
ApplicationsLegged robots, exoskeletons, AGV

Values are taken from the manufacturer's datasheet.

Project support

Let's bring your project to life together

If you are building a robot arm, a humanoid robot, an exoskeleton or a competition vehicle, tell us about your project. From motor selection to commissioning, our team stays with your project at every stage.

Tell us about your project

For university teams, R&D teams and industrial projects

  • The right motor, the right torqueLet's choose the model together based on your joint loads.
  • Setup and commissioningWe are with you on the driver, CAN communication and parameter tuning.
  • From prototype to productionLet's plan quantities and supply around your project timeline.

Technical documents

Files are published by the manufacturer CubeMars.

Other models in the series

Compare models in the same series side by side.

SpecificationThis productCubeMars AK45-36 KV80CubeMars AK45-36 V3.0 KV80ViewCubeMars AK45-10 V3.0 KV75ViewCubeMars AK40-10 V3.0 KV170View
Rated torque (Nm)882.51.3
Peak torque (Nm)242474.1
KV (rpm/V)808075170
No-load speed (rpm)5252180435
Weight (g)340349262190
DimensionsØ55 × 54 mmØ55 × 56.5 mmØ53 × 45.2 mmØ53 × 40.2 mm

Request a quote

Fill in the form for volume purchases, company invoicing and project pricing. Our team will get back to you shortly.

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Frequently asked questions

The most common questions about motor selection, delivery and technical support.

Is the product in stock and when is it dispatched?

Our products ship from our own warehouse in Turkey. Your order is dispatched within 3 business days. Current stock status is shown on this page.

Which motor fits my project? Can you help me choose?

Yes. Tell us the torque, speed and supply voltage you need, and we will find the right series together. You can also compare using the specifications table on this page and the filters on the category page.

  • For high torque at low speed, the AK, AKE and AKH series with gearbox
  • For direct drive and low inertia, the frameless RI and RO series
  • For cameras and stabilization systems, the GL series
Are the products genuine and under warranty?

Robotizma is an official CubeMars distributor. Every product we sell is genuine and covered by the manufacturer's warranty.

Where can I find the datasheet and mounting dimensions?

The Specifications section on this page lists rated torque, peak torque, KV, no-load speed, weight and outer dimensions. If you need the detailed datasheet, CAD file or driver documentation, ask our technical team.

Do you offer corporate sales, quotes and invoices?

We sell to universities, industry and R&D projects. For volume pricing and a formal quote, fill in the Request a quote form on this page and our team will reply with price and delivery details.

Which driver and communication can I use with the motor?

In the AK and AKH series actuators the driver board is built into the motor and communicates over CAN. The AKE series and the frameless RI and RO series motors need an external FOC driver. The R-Link and S-Link interfaces are for setup and debugging, and we can support you during installation.

Can't find your question?Write to the technical team