Operation manual for linear units type LK
DS-ENGLISH-SCHUB-LK-V1.00-2020.03.23
SEC-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
Output
flange
Stroke
Output
thread
Pitch
Factor
(
Nm
kN
)
Weight [kg]
LK50
CM03
G0/F10
50mm
M20x1,5
5mm/rev
1,06
12,3
LK100
CM03
G0/F10
100mm
M20x1,5
5mm/rev
1,06
15,0
LK120
CM06
G0/F10
120mm
M20x1,5
5mm/rev
1,06
19,2
CM06
G
1
2
/F14
120mm
M36x3,0
5mm/rev
1,06
23,6
Table 1:
Technical data linear units
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.
Figure 1:
CM03-Actuator with mounted LK100 linear unit
1
