Bosch rexroth 1 Series - Running-in phase

52/68 Commissioning
Bosch Rexroth AG, A20V(L)O Series 1, RE 93100-01-B/2019-09-10
8.2 Running-in phase
NOTICE
Property damage due toinsufficient viscosity!
Elevated hydraulic fluid temperature may excessively reduce viscosity and damage
theproduct!
▶ Monitor theoperating temperature during therunning-in phase,
e.g.bymeasuring theleakage temperature.
▶ Reduce theloading (pressure, rotational speed) oftheaxial piston unit
ifunacceptable operating temperatures and/or viscosities occur.
▶ Excessively high operating temperatures indicate faults that have tobe analyzed
and eliminated.
The bearings and sliding surfaces are subject toarunning-in phase. The increased
friction atthestart oftherunning-in phase results inincreased heat development
which decreases over time. Volumetric and mechanical-hydraulic efficiency isalso
greater until therunning-in phase ofabout 10operating hours isconcluded.
To ensure that contamination inthe hydraulic system does not damage theaxial
piston unit, BoschRexroth recommends thefollowing procedure after therunning-in
phase:
▶ After therunning-in phase, have ahydraulic fluid sample analyzed for therequired
cleanliness level.
▶ Change thehydraulic fluid iftherequired cleanliness level isnot
reached. Ifalaboratory test isnot carried out after therunning-in phase,
itisrecommended tochange thehydraulic fluid.
8.3 Recommissioning after standstill
Depending onthe installation conditions and ambient conditions, changes may occur
inthe hydraulic system which make recommissioning necessary.
The following criteria may make recommissioning necessary:
• Air and/or water inthe hydraulic system
• Old hydraulic fluid
• Other contamination
▶ Before recommissioning, proceed asdescribed inchapter8.1 "Initial
commissioning" onpage49.