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Modern Hydraulic Oils

HYDRAULIC FLUIDS–LOTOS Oilportfolio

• Hydraulic Power is critical in many industries

– Stationary – Injection moulding, primary metals, paper, power-generation

– Mobile – construction, mining, agriculture, marine

• OEMs produce pumps delivering higher power densities

• OVMs and Stationary System Builders are designing more compact systems

• Equipment Operators are demanding higher output productivity

– Greater reliability

– Fewer maintenance stops and unscheduled downtime

– Longer component life

• New specifications are required to ensure adequate protection under these increasingly severe operating conditions

Challenges for Hydraulic System Operators

Today’s hydraulic systems are currently facing tough challenges

Key parametersof hydraulic fuids

Basic parameters

• Viscosity• Water content• Acid Number• Pour Point• Flash point

Operational parameters

• Wear protection• Cleanliness class• Foaming resistance• Air release• Demulsibility• Shear resistance, • Viscosity decrease• Elastomer compatibility• Metal compatibility• Oxidation resistance


Anti-wear protection

ZDDP based technologies – properties:• Antiwear• Anti Corrosive• Anti oxidative


Working conditions• Light - Zn responseable• Heavy - S i P responsible

Hydrolysis of zinc based additives• Formation of acidic products

of decomposition• Viscosity loss• Acidic numer increase

Results:• Corrosion• Sludge /bloked pipe and valves/• Leakages• Metal surface damage• Pump abnormal load

High quality of hydraulic oils must have excellent wear protection and water separation properties

pictures from private resources


Anti-wear protection

Slipper pad damaged

Antifoaming/Air release

and amet.com.pl

pump

suctionpipe

return pipe

filter

tank

Perforatedpartition

levelgauge

inlet valve



How does a multi-piston pump work?


cross-section

Defoaming/Airrelease –dieseling, coking, erosion, cavitation



Defoaming/Airrelease –dieseling, coking



Pressure inrease peaks up to 5 times more than set value = abnormal pump wear and fluid deterioration

Defoaming/Airrelease – erosion, cavitation



Defoaming/Air release – erosion, cavitation



Defoaming/Air release– dieseling, coking, erosion, cavitation



The high quality of hydraulic oil have to excellent anti-foaming, air release properties and high oxidation stability

Fluid cleanliness Cleanliness class of oil from production

(based on 285 cleanliness checking results over 5 months) (PCM 400 Pall instrument)


The B-R recommends NAS 9 cleanliness level

Downsizing vs shear resistance

The smaller servovalve and less room available the sharpersuction and pressure channel edges.



Cross-section of directional control valves

Beginninig over 200 years ago as the foundry famous for its superb castsfor hydraulic casings.

Who are Bosch Rexroth?

• Over 1 million units produced in 2018

• Hydraulic group sales account for € 6.2 billion

• Operate facilities in over 80 countries

• Targeting major growth outside of Europe

– Doubling in Asia Pacific and the Americas

– €2.0 billion in Africa

World’s leading manufacturer of hydraulic pumps

Hydraulic fluid performance must meet the needs of modern systems demands

Vickers V104C 1950

Eaton/Vickers35VQ25 1978

DIN51525 Upgraded 1985

Denison Hybrid HF-0 2004

Bosch Rexroth RDE 90235 2014

BR RDE 90235 is Now the Highest Performance Level Specification

Thermal Stability

Elastomer 1008hrs

Electrical Properties

Extended Cu Corrosion

Low Temp Viscosity

Hydrolytic Stability

Four Ball LWSDTOST 1000 hr +

Lifetime

Severe Duty Pump/Motor

Test

Bosch Rexroth:

‘Our previous RDE 90220 specification is no longer sufficient to guarantee satisfactory performance in the high performance systems we build today’

Bosch Rexroth recognise pump failure as a significant factor impacting system uptime

Bosch-Rexroth requirements

FZG:A – standard teeths8.3 – rotating speed [m/s]90 – test temp. [°C]

TEST B-R RDE 90235 multipiston pump + motor

Parker-Denison T6 H20C piston and vane pump

Eaton vane pump 35V Q25

HM norm: DIN 51524 cz.2

FZG A 8.3/90 DIN 14 635-1

10 10 10 9

Time [operating h]

510 300 300

pressure [bar]

500

250 (vane pump) 280 (dry phase)

280 (piston pump) 250 (wet phase)

0

50

100

150

200

250

300

350

400

450

500

0 500 1000 1500 2000 2500 3000 3500 4000 4500

Pre

ssure

(b

ar)

Speed (rpm)

V104

250hr

ISO

35VQ

150hr

Eaton

Hybrid

600hr

Denison

Hybrid

600hr

Denison

Bosch

Rexroth

35+35

500hr

JCMAS

A2F

500hr

JCMAS

35VQ

150hr

JCMAS

V104

250hr

JCMAS

New BR Pump/Motor Test Operates at Higher Speed & Pressure

Vane Pumps

Bosch Rexroth RDE 90235 requires the highest level of fluid performance – Beyond

the previous industry standard Denison HF-0

Piston

Pumps

A6VM060Bent Axis Motor

Driving wheels

Pump Motor

Engine

New Bosch Rexroth RFT-APU-CL Pump Test*

*Rexroth Fluid Test Axial Piston Unit Closed Loop

A4VG045Piston pump

New BR Pump/Motor Test Replicates Severe Service Applications

Simulating Real World Applications

Ensuring robust and reliable pump/motor protection is the driver for Bosch Rexroth’s RDE 90235 specification

Bosch Rexroth Pump/Motor Test – The Challenge

Hydraulic motor pistons and cylinder bores are nitrided and oxide coated

Any loss of the piston/bore coating is an immediate failure

Hydraulic pump pistons and cylinder bore wear is strictly controlled

Wear typically occurs under the piston slippersPiston slipper thickness is closely controlled

Many oils do not provide adequate protection – robust technology is required

HYDROMIL L-HM BA –test results

SURFACE PROTECTION

CONVENTIONAL OIL HYDROMIL L-HM BA

CONVENTIONAL OIL

Piston pump average mass loss

CONVENTIONAL OIL HYDROMIL L-HM BA

HYDROMIL L-HM BA – test results

DIN 51524 Parts 1,2,3

Chinese Standard

GB 11118.1

ISO 11158

Eaton Brochure 03-401-

2010

Fives Cincinnati P-68, P-69, P-70

Swedish Standard SS.15543

4

ASTM D6158 –hydraulic

fluidsmineral

Parker Denison HF-0, HF-1, HF-2

Eaton E-FDGN-

TB002-E

LOTOS Hydromil L-HM BA – Specifications and Approvals

LOTOS Hydromil L-HM BA exceeds the majority of industrial and mobile hydraulic oil specifications

Hydromil L-HM BA – approvals

Source: Bosch-Rexroth

HydromilL-HM BA – approvals


L-HV applicationguidelines


Legend:

HV class oil

HM class oil

critical viscosities

HYDROMIL L-HV BA

Hydromil L-HM BA– The Key to Performance Reliability

Conclusion

Proven formulating expertise and global logistics for monograde & multigrade fluids

• Provides exceptional wear protection

– Exceeding standard industry limits

• Delivers outstanding oxidative and thermal stability

– Preventing degradation and maintaining cleanliness/efficiency

• Wide range of OEM approvals

Thank you for attention

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