Improvements & Features of KIIS (K2S) series vs V series

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Improvements & Features of KIIS (K2S) series vs V series

Postby om_tech_support_JT » Fri Dec 04, 2015 6:47 pm

Q: I'm currently using your V series three-phase AC gearmotors with variable frequency drives in the machines that I build. I am interested in upgrading to the newer K2S series. What kind of performance differences or new features should I expect?

A: There are a number of performance improvements and features introduced with the K2S series three-phase high torque AC gearmotors which were not introduced with the V series before. For the K2S series, Oriental Motor focused on improving efficiency as well as motor performance when used with inverters or variable frequency drives.

The new K2S series uses specialized components and an optimal magnetic design to improve power conversion efficiency up to 73%. Because of this increased efficiency, we are able to remove the fan from our motor case and offer increased torque output in a shorter case length. Therefore, the K2S series can provide more torque, and it's smaller and lighter than the V series.

K2S optimized motor design resulting in increased efficiency.jpg
K2S optimized motor design resulting in increased efficiency.jpg (76.96 KiB) Viewed 4187 times

K2S comparison of maximum efficiency.jpg
K2S comparison of maximum efficiency.jpg (49.48 KiB) Viewed 4187 times

K2S no fan, no opening, no dust.jpg
K2S no fan, no opening, no dust.jpg (78.21 KiB) Viewed 4187 times

K2S increased motor output power allows downsizing.jpg
K2S increased motor output power allows downsizing.jpg (88.93 KiB) Viewed 4187 times


Power consumption is reduced up to 10% with the K2S series compared to V series (90W, 1/8HP) which translates to cost savings.

K2S reduced power consumption up to 10%.jpg
K2S reduced power consumption up to 10%.jpg (53.38 KiB) Viewed 4187 times


Speed stability and performance characteristics with the K2S series have vastly improved from the V series. Even when dealing with changing load conditions, the motor speed will not fluctuate as much as the V series.

K2S less speed reduction due to large inertial loads.jpg
K2S less speed reduction due to large inertial loads.jpg (42.32 KiB) Viewed 4187 times


The K2S series motor performance with inverters or variable frequency drives have also vastly improved; allowing a wider recommended speed range than ever before from 3~120 Hz for the round-shaft and parallel-shaft geared type (up to 80 Hz with right-angle geared type). This is an increase in speed ratio from 12:1 to 40:1. Speed stability with inverters/VFD's have also improved.

K2S improved speed range, ratio.jpg
K2S improved speed range, ratio.jpg (93.57 KiB) Viewed 4187 times

K2S more speed stability with inverter, variable frequency drive.jpg
K2S more speed stability with inverter, variable frequency drive.jpg (60.38 KiB) Viewed 4187 times


We have also adopted creep-free bearings in the K2S series round-shaft motors in order to improve high speed performance.

K2S creep-free bearings adopted.jpg
K2S creep-free bearings adopted.jpg (47.48 KiB) Viewed 4187 times


For the K2S series, we have also added some features and options for customer convenience. We have adopted a new slimmer, rotatable terminal box with a higher IP66 drip-proof rating (compared to IP54 on the V series) designed to make wiring even easier. With this new terminal box, you can change the direction of the cable outlet to 4 different positions. Imperial or metric shaft options are also available. We have also adopted stainless steel screws on the motor case.

K2S new terminal box.jpg
K2S new terminal box.jpg (46.96 KiB) Viewed 4187 times


Last but not least, the K2S series adopts a newer hypoid right-angle gearhead which increases permissible torque, radial load as well as axial load. The V series did not offer a right-angle gearing option. Parallel shaft geared options are standard.

K2S new hypoid right angle gearhead with higher permissible torque, radial load and axial load.jpg
K2S new hypoid right angle gearhead with higher permissible torque, radial load and axial load.jpg (113.36 KiB) Viewed 4187 times

K2S parallel shaft gearhead permissible torque, radial load and axial load.jpg
K2S parallel shaft gearhead permissible torque, radial load and axial load.jpg (97.69 KiB) Viewed 4187 times


For more information about the K2S series, please view our overview page below:

K2 (SINGLE-PHASE) & K2S SERIES (THREE-PHASE) HIGH TORQUE AC GEARMOTOR SERIES OVERVIEW, PRODUCT LINE-UP, ACCESSORIES, VIDEOS & DOWNLOADS:
http://www.orientalmotor.com/products/a ... otors.html

Technical Support Contact Information:
Phone 800-468-3982
E-mail techsupport@orientalmotor.com
Website/Chat http://www.orientalmotor.com

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