Bosch Rexroth Hagglunds VI 64 Series - Environmentally Acceptable Fluids

Technical data 11/68
Hägglunds VI, RE 15310-WA/10.2015, Intallation and maintenance manual, Bosch Rexroth Mellansel AB
Viscosity limits
Viscosity index
=100 recommended
=150* for operation with large
temperature dierence
Min. permitted in continuous duty
Min. permitted in intermittent duty
Max. permitted
40 cSt/187 SSU
20 cSt/98 SSU**
10000 cSt/48000 SSU
* Many hydraulic uids with VI-improvers are subject to temporary and permanent reductions
of the viscosity.
** Low viscosity gives reduced service life for the motors and reduction of max. allowed
power for “Hägglunds VI”.
Fire resistant uids
Operating with re resistant uids
The following uids are tested for Hägglunds motors: (ISO/DP 6071)
Fluid Approved Seals Internal paint
HFA: Oil (3-5%) in water emulsion No – –
HFB: Inverted emulsion 40-45% water in oil Yes Nitrile (std motor) Not painted*
HFC: Water-glycol Yes Nitrile (std motor) Not painted*
HFD synthetic uids
HFD:R – Phosphate esters Yes Viton Not painted*
HFD:S – Chlorinated hydrocarbons Yes Viton Not painted*
HFD:T – Mixture of the above Yes Viton Not painted*
HFD:U – Other compositions Yes Viton Not painted*
* Must be specied in the order.
IMPORTANT!
Down rating of pressure data and service life must be considered when using re resistant uid.
Hägglunds or its authorised representative must always be contacted for approval in the case of
these types of uids.
Environmentally acceptable uids
Fluid Approved Seals Internal paint
Vegetable */** Fluid HTG Yes Nitrile (std motor) –
Synthetic **/Esters HE Yes Nitrile (std motor) –
* Vegetable uids give good lubrication and small change of viscosity with dierent temperature.
Vegetable uids must be controlled every 3 months and temperature shall be less than +45 °C
(113 °F) to give good service life for the uid.
** Environmental acceptable uid gives the same service life for the drive, as mineral oil.
Filtration
The oil in a hydraulic system must always be ltered and also the oil from your
supplier has to be ltered when adding it to the system. The grade of ltration in a
hyd raulic system is a question of service life v.s. money spent on ltration.
In order to obtain stated service life it is important to follow our recommendations
concerning contamination level.