Bosch Rexroth 10 Series - Installation; Installation Conditions; Installing the Axial Piston Unit; Commissioning

Bosch Rexroth AG, RE 92650/2020-03-03
4 A1VO Series 10 | Axial piston variable pump
Hydraulic fluid
Hydraulic fluid
The axial piston unit A1VO isdesigned for operation
withHLP mineral oil according toDIN 51524.
Application instructions and requirements for
hydraulicfluid selection, behavior during operation
aswellasdisposal and environmental protection should
betaken from the following data sheets before the start
ofproject planning:
▶ 90220: Hydraulic fluids based onmineral oils and
related hydrocarbons
Selection ofhydraulic fluid
BoschRexroth evaluates hydraulic fluids onthebasis
oftheFluid Rating according tothe technical
datasheet90235.
Hydraulic fluids with positive evaluation inthe Fluid Rating
are provided inthe following technical datasheet:
▶ 90245: BoschRexroth Fluid Rating List forRexroth
hydraulic components (pumps and motors)
Selection ofhydraulic fluid shall make surethat
theoperating viscosity inthe operating temperature range
iswithin theoptimum range (ν
opt
; see selection diagram).
Viscosity and temperature ofhydraulic fluids
Viscosity Shaft seal Temperature
2)
Comment
Cold start
ν
max
≤ 1600 mm²/s
FKM ϑ
St
≥-25 °C
t ≤ 3 min, without load (p ≤ 50 bar), n ≤ 1000 rpm
Permissible temperature difference between axial piston
unitand hydraulic fluid inthe system maximum 25 K
Warm-up phase
ν = 1600 … 400 mm²/s t ≤ 15 min, p ≤ 0.7×p
nom
and n ≤ 0.5×n
nom
Continuous
operation
ν = 400 … 10 mm²/s
1)
FKM ϑ ≤ +90 °C measured at port L
ν
opt
= 36 … 16 mm²/s
optimal operating viscosity and efficiency range
Short-term
operation
ν
min
= 10 … 7 mm²/s
FKM ϑ ≤ +90 °C
t ≤ 1 min, p ≤ 0.3×p
nom
, measured at port L
▼ Selection diagram
−25 −10 10 30 40 50 90 11570
0
7
10
40
60
20
100
200
400
600
1000
1600
VG 22
VG 32
VG 46
VG 68
VG 100
16
36
Viscosity ν [mm
2
/s]
Maximum permissible viscosity oncold start
Warm-up phase
Continuous operation
ν
opt
Minimum permissible viscosity forshort-term operation
Temperature
ϑ [°C]
1) This corresponds, forexample ontheVG46, toatemperature
range of+4 °C to+85 °C (see selection diagram)
2) If thetemperature atextreme operating parameters cannot
beadhered to, please contact us.