Servomech S.p.A.
21.15-25-50-100-150-200.E - Rev. 01 DD (M/Y) 10/19
21
9.1
Linear drive lubrication
Before to start relubrication, put the actuator in extended position (La – see Fig. 6.9)
Relube the linear actuator using proper grease nipples, as shown on Fig. 9.2.
Grease nipple type: DIN71412 M6
Figure 9.2 – Linear drive lubrication
Apply the grease quantity indicated in Tab 9.1 with several partial quantities.
Travel over the entire stroke between one lubricating operation and the next.
WHEN LUBRICATING THE LINEAR DRIVE, THE ACTUATOR MUST ALWAYS BE IN EXTENDED (La)
POSITION. DO NOT LUBRICATE THE LINEAR SCREW DRIVE IN RETRACTED (Lc) OR INTERMEDIATE
POSITIONS!
IN CASE OF STROKE LENGTH ≥ 500 mm, 2 GREASE NIPPLES FOR THE LINEAR DRIVE LUBRICATION ARE
PLACED ON ACTUATOR. EQUALLY SPLIT THE TOTAL LUBRICANT QUANTITY (SEE TABLE 9.1) BETWEEN
THE 2 GREASE NIPPLES.
DO NOT CONFUSE THE LINEAR DRIVE GREASE NIPPLE WITH THE PUSH ROD GUIDES GREASE NIPPLES
(SEE SECTION 9.2 “PUSH ROD GUIDES LUBRICATION”).
At the end of lubricating procedure, extend and retract the push rod over its entire stroke for 3 full
cycles.
If necessary, remove excess of lubricant from push rod.
Linear drive grease nipple