Motors - Heavy Duty Ball Winders by NKK

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Important info about motor and motor sleeves

Depending on when you purchased your power base, it came with either an all-plastic pulley system (white plastic pulley on both the ball winder and another one on the motor.
These were typically shipped from 2008-2010/11. These pulleys had a round groove and used Black (and later Orange) belts measuring 3/16" in diameter.

They motors were designated as -051 and -027. The number (051) is the number of gear reductions that the motor contains and is divided into 3600 to arrive at the max RPM for that motor. The 051 had a max RPM of 70 with reasonably good torque (approx 85 Inch/Ounces).

The 027 had a max RPM of 133. But it had less torque (70 Inch Ounces).

The 051 was not shipped for very long as we determined that it was too slow for most users. It was replaced by the motor 027 which was faster.

As time went on we wanted more torque but the speed was fine at 133 RPM so we selected the 019 motor from a different motor class and this motor had a max RPM of 155 but more importantly, its torque was about 100 inch/ounces. This became the standard motor for all motor drives including our skein-winder.

This motor had a metal sleeve that fit snugly around it. This aditional steel sleeve added more mass to the magnetic effect that the motor generated and this increased the torque to the advertised limit while reducing the RPM to 155. However, these sleeves had been accidentally left off of early production. These sleeves should have been mounted from day 1 of this motor's introduction but weren't. As a result, the RPMs were running faster than 155 but the torque was running less. This was a problem since we prefer more torque rather than less. We then added the sleeve on all units starting in 2013.


The way to tell if you have this 019 motor (in case the label is no longer on it) look for the metal V pulley on the motor. If you have that pulley and not the white plastic pulley, then you have the 019 High Torque motor. This motor only uses 1/4" diameter clear plastic belts.

UPDATE - starting March 2015 we started using custom manufactured pulleys for both the motor and the ball winder and these are both made of white plastic. So you can no longer determine if the motor is an R19 based on the motor pulley's color. If you have a 1/4" diameter CLEAR belt, however, then you have an R19 motor.

If you do not have the sleeve on your 019, we may be able to provide one if they are available. Otherwise, when you purchase a new replacement motor, it will automatically come with this new sleeve.

Do not discard your sleeve when replacing a motor, unless your replacement motor has a sleeve already (note: some replacement motors were sold without the sleeve prior to our learning that the sleeve was required).

All motors shipped as of 2013 are R19's, even replacement motors for older units. When a use upgrades to th R19 (which everyone must eventually do) they must upgrade their pulleys and belts as well because the clear belts and new pulleys are 1/4" dia and the older belts were 3/16" dia.

We have special instructions for converting the rubber motor grommet on your Powerr Base motor bracket to accommodate this thicker motor with sleeve combination. Click here to download it.

More Motor Information

The motors we use are DC Gearmotors. They are powered by 24 volts DC (the Power Supply we use is a 100-240 Volt AC 50/60 Hertz power adapter similar to one you would use on a laptop computer).
Our systems can be used anywhere on the planet. Our power supply meets all of the regulatory requirements for most countries. The only thing a user from another country will need to do is ad an adapter for converting the plus on the cable below to meet their wall outlet requirements.

These motors gear down the max RPM of 3600 by means of a gear system. This then provides power (torque) and turns the unit at a max. of 155 RPM.

The motor's output is then multiplied back up by means of our 5X gear system inside the ball winder. So the effective RPM at the spindle head is 155 x 5 = 775 RPM. However, there is a loss of power as a result of the gear system inefficiency and from turning the mass of the ball winder's components and the net RPM is approx 620-640. However, these 620-640 RPM have power now due to the gear reduction.

We tame some of that power so your yarn does not get torn when a jam occurs by means of our innovative belt and pulley system. So power that you need when you want it and and an  automatic slippage system when you don't. It is like an automatic clutch system all done in the background for the user.

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