KST MS589 Servo - 9.2Kg.cm 0.08s 38.0g 15mm

Product Code: KST-MS589

(5 reviews)

Price: $80.70

Description

The new KST MS589 is a very powerful high voltage contactless servo suitable for helicopter cyclic and all fixed wing aplications. At 15 mm thick and 38 g weight it is reasonably small and light, considering its excellent 9.2 kg.cm of torque and 0.08 sec/60° speed.

The MS589 uses a Hall effect (magnetic) positon sensor for maximum acuracy and reliability. Also see the KST D589MG servo which is the same size but uses a potentiometer as a position sensor.

The KST MS589 a similar size and torque as the well regared MKS HV737 and is faster and better value.

Despite not having an -MG moniker the KST MS589 servo has a hardened steel metal gear train.

KST MS589 Servo Specifications
Body dimensions	35.5 mm wide x 15.0 mm thick x 32.5 mm high	1.40" wide x 0.59" thick x 1.28" high
Max dimensions	47.0 mm wide x 15.0 mm thick x 39.0 mm high	1.85" wide x 0.59" thick x 1.54" high
Stall torque (6V)	6.5 Kg.cm	90 oz.in
Stall torque (7.4V)	8 Kg.cm	111 oz.in
Stall torque (8.4V)	9.2 Kg.cm	128 oz.in
Weight	38 g	1.34 oz
Lead length	21 cm	8.3 in
Operating speed (6V)	0.1 sec/60°
Operating speed (7.4V)	0.09 sec/60°
Operating speed (8.4V)	0.08 sec/60°
Operating voltage	6V to 8.4V
Operating temperature	-20 to 60 °C
Bearings	2 Ball bearings
Gear material	Hardened steel
Case material	Aluminium alloy
Motor type	Coreless
Working frequency	333 Hz
Dead band/resolution	2 µs
Pulse width for ± 60º	1000-2200 µs
Digital	Yes
Programmable	No
Position feedback	Hall effect (magnetic)
Supplied accessories	4 plastic output arms, 2 arm retaining screws, 4 mouning screws, 4 rubber gromets
Optional accessories

Reviews 5

23/06/2024 09:24

Review by: Andrias

For my extreme flight 67” Laser airplanes smooth and fast! Amazing torque and holding power! Perfect centering!

23/12/2019 15:16

Review by: Ricky Bobby

KST ms589

Best servos available for extreme flight 60” airplanes! Super smooth and fast! Amazing torque and holding power! Perfect centering!

02/11/2019 21:08

Review by: Anonymous

Best 15mm servo

IMHO the best and most reliable 15mm servo there is, and and at a sensible price , not to mention hyperflights superb service

15/09/2019 20:14

Review by: Anonymous

KST ms589 HV contactless servo

For some time now I’ve been using the smaller ms320 servos because of their extreme reliability, accuracy and speed, they’re quiet too.
The MS589 has proved the perfect answer on large moulded glider elevators and now on the elevator of a fifth scale 55cc petrol powered scale Spitfire.

28/11/2017 15:13

Review by: Elliot

A revelation

Wow, these servos are nothing short of revelatory, due I expect to the accuracy of the hall sensor, these servos don't whine like normal digi's. Amazingly quick and fantastically strong on 2S. Bought for a heavy weight slope glider, they're actually for collective on a biggish heli I believe. I don't usually spend this sort of money on servos, but when they're this good, it may well be habit forming.

They use Futaba horns (24t?) so somewhat disappointed the alloy horns I paid extra for really don't fit and I'm expected to return them at my cost?!

In short, I think I'll be buying KST over Hitec in the future.