36/60 Installation
Bosch Rexroth AG, A15VSO/A15VLO Series 11, RE 92801-01-B/11.2018
3. For versions with through drive, install the auxiliary pump according tothe pump
manufacturer's instructions. The protective cover(5) isnot pressure-resistant and
should not beused during operation.
7.4.8 Hydraulically connecting the axial piston unit
NOTICE
Insufficient suction pressure!
Generally, aminimum permissible suction pressure atportS isspecified for axial
piston pumps inall installation positions. If the pressure atportS drops below the
specified values, damage may occur which may lead tothe axial piston pump being
damaged beyond repair!
▶ Make sure the necessary suction pressure ismaintained. This isinfluenced by:
– The piping (e.g.suction cross-section, pipe diameter, length ofsuction line)
– The position ofthereservoir
– The viscosity ofthehydraulic fluid
– A filter element orcheck valve inthe suction line (check the level
ofcontamination ofthefilter element regularly)
The machine/system manufacturer isresponsible fordimensioning ofthe lines.
Connect the axial piston unit tothe rest ofthehydraulic system inaccordance with
the hydraulic circuit diagram ofthemachine/system manufacturer.
The ports and fastening threads are designed for the maximum permissible
pressures p
max
, see Table 12 "Ports A15VSO/A15VLO series 11" onpage39. The
machine/system manufacturer isrequired toensure that the connecting elements
and lines correspond tothe specified application conditions (pressure, flow,
hydraulic fluid, temperature) with the necessary safety factors.
Connect only hydraulic lines that are match the axial piston unit port
(pressurelevel, size, system ofunits).
Observe the following information when routing the suction, pressure and
drainlines.
• Lines and hoses should beinstalled without pre-charge pressure sono further
mechanical forces are applied during operation that will reduce the service life
oftheaxial piston unit and, possibly, the entire machine/system.
• Use suitable seals assealing material.
• Suction line (pipe orhose)
– The suction line should beasshort and straight aspossible.
– Measure the line cross-section ofthesuction line sothepressure atthesuction
port does not drop below the minimum permissible pressure. Make sure the max.
suction pressure isnot exceeded (e.g.when prefilling).
– Make sure the connections and connecting elements are airtight.
– The hose must bepressure-resistant, also toexternal air pressure.
• Pressure line
– For the pressure lines, use only pipes, hoses and connecting elements rated for
the working pressure range specified indatasheet92801 (see Table 12).
Information on
routingoflines