Souriau TRIM TRIO® Info

Souriau TRIM TRIO® parts required to build a motor cable have variable lead times. Please check with Souriau stocking distributors (such as Digikey) to ensure component lead times meet your requirements. Even if a TRIM TRIO® is preferred in your final assembly, for faster prototyping, select the Molex pigtail and the Teknic-offered Molex motor extension cable.

Shaft Seal Info

For extra protection beyond the standard double-sealed ball bearings, an optional dynamic shaft seal is available. Hudson's high-quality shaft seal is made with a specially formulated elastomer to provide a minimal compression set, excellent high temperature properties, low friction and wear, and improved chemical resistance.

The motor shaft will be IP66K/IP67 rated with the shaft seal.

Shaft Diameter Info

The standard shaft diameter for NEMA 23 Hudson servo motors is 0.375 inch (9.525 mm). This larger diameter provides better radial load capability and better torsional stiffness (and hence better dynamic performance) than the 0.250 inch (6.350 mm) shaft option. In some cases, however, for compatibility with gearheads, brakes, and other mechanical components, a 0.250 inch (6.350 mm) shaft is desirable and offered as an option.

Hudson Motor Body Sealing and Connector Information

Hudson Motor Connector and Shaft Options Summary

Hudson motors can be configured with one of the three connector options:

¹This test is specified in DIN 40050 and not IEC/EN 60529. A product rated with a higher rating (e.g. IP67) is not guaranteed to meet the "6X" requirement. For components that meet multiple tests, both will be listed with a slash (e.g. IP66K/IP67).

Teknic's Hudson with pigtails are not rated for any liquid protection. When ordered with the shaft seal, Hudson motors with M12 on-body connectors are rated for both 6K and 7.

Exclusions from IP ratings: Long-term submersion and food grade ratings

Immersion Rating vs. Submergibility

Products that are rated for the liquid immersion rating (7) are rated to withstand immersion up to 30 minutes without ingress. However, they are not rated for long-term operation while submerged.

Teknic's Hudson with M12 on-body connectors are not to be operated when submerged.

Food Grade Ratings

There are some applications where motors are exposed to caustic washdown, particularly in food processing facilities. This is not specified by IEC/EN 60529 (IP ratings), and often requires smooth, stainless steel housings to prevent both particulate build-up and corrosion due to caustic chemical exposure.

Teknic's Hudson motors are not food grade rated, but many customers have successfully built them into low cost enclosures as an inexpensive alternative to food grade rated motors.

Encoder Density Info

Hudson servo motors use an encoder disk made of photo-lithographically etched stainless steel, not glass, so it can't shatter and is concentrically clamped to the shaft for better accuracy and reliability. Choose between four encoder resolutions with differential outputs for improved signal integrity.

Are you sure?

For the front motor flange to be IP66K/IP67 rated, the shaft seal is required. The shaft seal is not available on the selected 1/4" shaft option. Do you want to change the shaft diameter to 3/8" and add the shaft seal option?

Shaft Seal Info: Please Read

For the front motor face to be IP66K/IP67 rated, the shaft seal is required. The shaft seal option has automatically been selected.

The shaft seal option (required for the motor shaft to be IP66K/IP67 rated) is only available with the standard 3/8" shaft diameter. Do you want to change the shaft diameter to 3/8" and add the shaft seal?

Shaft seal option is required for the motor front face to meet the IP66K/IP67 rating with the M12 On-Body connector option.

[PLACEHOLDER]Pump the brakes. We don't sell them for a quarter-inch shaft. Select the 3/8 inch shaft for brakes.

What is an "optimal" drive?

In order to get maximum power out of any given servo motor, your motor drive needs to be well matched to the motor. "Well matched" means the current and voltage provided by the servo drive (a.k.a., servo amplifier) is optimal for the electromagnetic characteristics of the motor.

For every Hudson motor, Teknic provides the optimal peak and continuous (RMS average) current that your drive must supply to get maximum peak torque, and maximum continuous torque from the motor. If your drive provides less current than this optimal amount, the motor will produce proportionately less torque. If your drive is capable of generating more current than the motor's optimal amount, it will go unused (and you will probably want to limit the current output in the drive's settings to the motor's optimal amount).

Drive output voltage (a.k.a., bus voltage) can also have a significant effect on motor power. As a motor spins, it generates a voltage that opposes the bus voltage. If that opposing voltage gets high enough relative to the bus voltage, the net voltage will not be high enough to "push" the drive's rated current into the motor, thereby reducing the torque. Higher bus voltage enables full current to be pushed into the motor at higher RPM.

So, while this is an oversimplification, it's reasonable to think of current as producing torque and voltage as producing higher speeds. Your servo drive must provide enough current and voltage for the servo motor to produce the desired power (torque multiplied by speed) for your application.