Section 1: General; General - Emerson Bettis RTS Installation, Operation And Maintenance Manual

Installation, Operation and Maintenance Manual
VCIOM-15429-EN Rev. 1

Section 1: General

Type ball screw linear drives units are offered in different variants, see Table 1. These are
mounted together with electric open/close or modulating actuators, of the series CM, on
valves which require a linear positioning movement. These linear units convert the torque
output from the actuator into an axial force through a ball screw drive. Not only is a higher
control accuracy allowed, but also a longer lifetime is provided with the use of a ball screw
drive. The combination of actuator and linear unit, is based on the required thrust and the
necessary stroke.
Table 1.
Type
LK50
LK100
LK120

General

Technical Data Linear Units
Output
Actuator Stroke
Flange
CM03 G0/F10
CM03 G0/F10 100 mm
CM06 G0/F10 120 mm
CM06 G1/2 F14 120 mm
Output
Thread
50 mm M20x1.5 mm 5 mm/rev
M20x1.5 mm 5 mm/rev
M20x1.5 mm 5 mm/rev
M36x3 mm 5 mm/rev
Section 1: General
Factor
Pitch
(Nm/kN)
1.06
1.06
1.06
1.06
July 2021
Weight
(kg)
12.3
15.0
19.2
23.6
1