SCHIEBEL LK Series Operation Manual

Operation manual for linear units type LK
DS-ENGLISH-SCHUB-LK-V1.00-2020.03.23
Operation manual for linear units type LK

1 General

Type LK linear 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.
Type Actuator
LK50 CM03
LK100 CM03
LK120 CM06
CM06
2 Structure
Figure 1 shows e.g. an CM03 actutator with mounted LK linear unit. The linear unit itself consists essentially of
a solid cast housing, a mounted spindle nut and a non-rotating spindle, see Figure 2. To prevent contamination
by dusty ambient air and to ensure the mechanical protection, the linear unit is completely sealed with O-rings
at the output.
Output
Stroke
flange
G0/F10 50mm
G0/F10 100mm
G0/F10 120mm
1
G /F14 120mm
2
Table 1: Technical data linear units
Figure 1: CM03-Actuator with mounted LK100 linear unit
SEC-DS-ENGLISH-SCHUB-LK-V1.00-2020.03.23
Output
Pitch
thread
M20x1,5 5mm/rev
M20x1,5 5mm/rev
M20x1,5 5mm/rev
M36x3,0 5mm/rev
Nm
Factor ( ) Weight [kg]
kN
1,06 12,3
1,06 15,0
1,06 19,2
1,06 23,6
1