CubeMars G40 KV210

The G40 KV210 is the fast winding of the CubeMars G40 gimbal motor. Its housing and 107 g weight are the same as the KV70 version, the difference is in the winding. On 16 V its no-load speed is 3120 rpm and its rated speed 2100 rpm. Alongside 0.25 Nm rated torque it delivers 0.75 Nm peak torque. It has no driver board and is used with an external FOC driver.

Key features

• High speed. At 3120 rpm no-load it is the faster of the two G40 windings, well suited to continuously rotating scanning heads.
• Higher peak torque. Peak torque is 0.75 Nm and the torque to weight ratio rises to 7.01 Nm/kg, leaving more margin for sudden load changes.
• Low winding resistance. Phase to phase resistance is 500 mΩ and inductance 180 µH. The electrical time constant is a short 0.36 ms.
• Large center hole. Cables can pass through the large bore and an electrical slip ring can be integrated, so signal and power can be carried on continuously rotating axes.
• Speed and position control. It is driven with FOC and supports speed and position control modes.

Applications

Typical applications include rotating radar heads, autonomous driving scanning modules, continuously rotating sensor platforms and light gimbal axes that must change direction quickly.

Is it enough for your project?

The G40 KV210 delivers 0.25 Nm continuous and 0.75 Nm peak torque. On gimbals and rotating heads the torque demand is mostly set by how far the center of gravity of the load sits from the axis. For example, a 0.6 kg sensor head with its center of gravity 3 cm off the axis needs about 0.18 Nm of static torque (0.6 × 9.81 × 0.03). That stays within the rated torque.

Rated current is 4.9 A and peak current 14.9 A. With a torque constant of 0.050 Nm/A it needs more current than the KV70 winding for the same torque, so size your power supply and driver for that current. If the axis turns slowly, the G40 KV70 may be the more efficient choice.

How it compares to similar models

• G40 KV70. Same housing and 0.25 Nm rated torque. It gives 1015 rpm no-load speed and 0.5 Nm peak torque, with a rated current of 1.62 A.
• GL40 KV70. The GL model with the same diameter, with 0.25 Nm rated torque and 1015 rpm no-load speed. Its page states a size of Ø46.5 × 21.5 mm, an 8 mm bore and IP45 protection.
• G60 KV55. One size up. On 24 V it gives 0.6 Nm rated and 1.75 Nm peak torque with 1140 rpm no-load speed, and weighs 226 g.

Frequently asked questions

What is the difference between KV210 and KV70?

The housing and rated torque are the same. The KV210 turns much faster (3120 rpm no-load against 1015 rpm for the KV70) and gives a higher peak torque, in return it draws more current.

Is a driver included?

No. The product page lists the driver board option as "no". The motor is used with an external FOC driver that must handle the 14.9 A peak current.

Can it rotate continuously through 360 degrees?

The motor is brushless and the large center hole is suited to a slip ring. With signal and power routed through a slip ring the axis can rotate continuously.

What are its dimensions?

The manufacturer does not give dimensions on the G40 page. Check the 2D drawing PDF and the CAD model for mounting dimensions.

In the box

• G40 KV210 gimbal motor (no driver board)

The manufacturer does not publish a detailed packing list or box size on the G40 page. Ask our team about cables and mounting parts before ordering.

Related products

Our team can help you choose a high-current driver, an encoder and a slip ring.

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.

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