Kinco Driver / Motor (SMC60S-0040-30QAK-5BSU)

Most people judge a servo motor by its power rating, but the supply voltage often decides whether it fits a machine at all. The Kinco Driver / Motor (SMC60S-0040-30QAK-5BSU) is a 400 W low-voltage brushless servo motor rated 3,000 rpm at 48 V DC, so it suits builds that run from a DC bus instead of a mains cabinet. It is a compact motor for people who build moving machines and want predictable motion without a heavy electrical installation.

The product is available through this page, by quotation.

Background

Kinco and the SMC60S family

Kinco is a maker of servo drives, servo motors and motion control components for industrial automation. Its products are used by machine builders and by the robotics companies that assemble drive trains from catalog parts. Within that range, the SMC60S series is the low-voltage, small-inertia line of brushless servo motors on a 60 mm flange. The sources name five versions in this family: SMC60S-0040-30AAK-3LKH, SMC60S-0040-30ABK-3LKH, SMC60S-0040-30MAK-3DSU, SMC60S-0040-30MBK-3DSU and SMC60S-0040-30QAK-5BSU. The figures in this article belong to the last of them, SMC60S-0040-30QAK-5BSU, and are not borrowed from any sibling.

Having several versions of one motor is a practical convenience. A designer can keep the same frame, the same power class and the same mounting while choosing the variant that matches the cabling and feedback arrangement of the machine. That is why the full model code matters when you ask for a quotation: the letters at the end of the code separate one version from the next.

Positioning: a small-inertia motor for a DC supply

This motor is catalogued as a low-voltage brushless servo motor of the SMC60S series with small inertia. Brushless construction means there are no brushes to wear, and the motor is commutated electronically by its drive. Small inertia is a design choice that favors responsiveness: the motor is meant to start, stop and reverse quickly instead of spinning a heavy load at a steady pace.

The 48 V DC rated voltage on the DC link places it among the motors used on battery-fed and low-voltage platforms. That can include automated guided vehicles, autonomous mobile robots, compact transfer stations and small production machines. A low-voltage supply can also simplify the electrical safety concept of a machine, which is one reason builders look at this class of motor.

Technical Specifications

Specifications as published by the manufacturer; confirmed against the datasheet at quotation.

The manufacturer has not published the weight, the length, the encoder type of this exact version, the rotor inertia, the brake option, the cable connector details or the contents of the box; they are confirmed at quotation.

How should the torque and speed figures be read?

Servo motors are rated on several torque figures, and each answers a different design question. The rated torque of 1.27 N·m (180 oz-in) is what the motor delivers in continuous operation at its rated speed of 3000 rpm. The rated standstill torque of 1.40 N·m (198 oz-in) describes the torque available when the shaft is not turning, which matters for machines that hold a position under load. The maximum (peak) torque of 3.81 N·m (540 oz-in) is the short-duration reserve for acceleration, for breaking a load free and for absorbing a sudden demand.

Current follows the same logic. The rated current is 10.1 A and the maximum (peak) current is 30.3 A. The drive and the DC supply must be able to deliver those currents, so a designer sizing a battery or a power stage should work from both numbers and not from the continuous figure alone.

On speed, the motor is rated at 3000 rpm and reaches a maximum speed of 3500 rpm. That gives a modest margin above the rated point. A gearbox between motor and wheel or axis is the usual way to turn this speed and torque into the motion a machine needs.

What makes a low-voltage servo motor different from a mains-fed one?

A mains-fed servo system draws from an alternating supply and normally lives in a control cabinet with the protections that implies. A low-voltage system works from a DC bus, so the motor can sit on a platform that carries its own battery, or in a machine where a low-voltage supply is preferred. This motor is of the second kind, with a rated DC link voltage of 48 V DC.

The mechanical package matters as well. A 60 mm flange (60 × 60 mm) is a compact frame, and the keyed shaft gives a positive mechanical connection to a pulley, a coupling or a gearbox input. The protection level is IP65 for the body and IP54 for the shaft seal, so the shaft seal carries a lower rating than the body, and that distinction belongs in any design that exposes the shaft end to dust or splashing. Insulation class F and totally enclosed, non-ventilated cooling complete the picture: the motor sheds heat through its housing instead of through a fan.

Who is the Kinco Driver / Motor (SMC60S-0040-30QAK-5BSU) for?

Robot builders are the first segment. Teams assembling autonomous mobile robots and automated guided vehicles need a drive motor that works from a low-voltage DC bus, and this motor is made for that supply. Integrators who deliver factory cells will look at it for compact axes and transfer mechanisms; the Factory Robots category shows the wider range of equipment this motor can serve. Warehouse and intralogistics specialists can find it useful in conveyor modules and compact vehicles, and the Logistics Robots category covers that field.

Machine builders replacing a motor in an existing 48 V DC design are a third segment. They should match the model code carefully, since the sources list several SMC60S versions. Buyers who want to compare another Kinco servo motor can look at the Kinco Driver / Motor (SMC80S-0075-30MAK-5DSU), and ask us to explain how it differs from this one when requesting a quotation.

What is the Kinco Driver / Motor (SMC60S-0040-30QAK-5BSU) used for?

1. Drive wheels of mobile robots. A 48 V DC servo motor can power the traction axis of a battery-fed vehicle through a gearbox.
2. Compact factory axes. The small-inertia design suits axes that start, stop and reverse often.
3. Transfer and conveyor modules. The keyed shaft connects to pulleys, couplings and gear stages in material-handling mechanisms.
4. Lifting and positioning mechanisms. The standstill torque rating is relevant where a mechanism must hold its position.
5. Robot development and prototyping. Teams can use a catalog servo motor to test a drive concept before fixing the final design.
6. Replacement in existing 48 V DC machines. Maintenance teams can match the model code and the ratings to a motor already in service.

Pricing and Availability

This product is sold by quotation, and we do not publish prices on the page. Send us the model code SMC60S-0040-30QAK-5BSU together with your quantity and application, and we will prepare the offer. Delivery, customs and support are arranged together with the quotation. The Kinco Driver / Motor (SMC60S-0040-30QAK-5BSU) is available on this page.

Frequently Asked Questions

What is the rated power of this motor?

The rated power is 400 W at a rated voltage of 48 V DC on the DC link. The rated speed is 3000 rpm.

What torque does it deliver?

The rated torque is 1.27 N·m (180 oz-in), the rated standstill torque is 1.40 N·m (198 oz-in) and the maximum (peak) torque is 3.81 N·m (540 oz-in).

What is the protection level?

The body is rated IP65 and the shaft seal IP54. The insulation class is F, and the cooling is totally enclosed and non-ventilated.

What size is the flange and what shaft does it have?

The flange is 60 mm (60 × 60 mm) and the shaft is a keyed shaft. The number of pole pairs is 3.

Does the motor include a brake or a specific encoder?

Ask us for the brake and encoder details of this exact version when you request the quotation.

Is this motor the same as the other SMC60S versions?

No. The sources name five SMC60S versions, and the figures here belong only to SMC60S-0040-30QAK-5BSU. Please state the full model code when you ask for a quotation.

Where can I buy the Kinco Driver / Motor (SMC60S-0040-30QAK-5BSU) and what does it cost?

You can request it through this page, and we answer with a quotation. Prices are not listed, because the offer depends on your quantity and project.

Summary

The supply voltage, not the power rating alone, decides where a servo motor belongs, and this one is made for the low-voltage side. It is a 400 W brushless motor with small inertia, a 60 mm flange, a keyed shaft, a rated 3000 rpm at 48 V DC and a peak torque of 3.81 N·m (540 oz-in). For builders of mobile robots and compact automation, that combination makes it a sensible candidate. If this motor fits your design, this page is the starting point.