September 30, 2020
GGB ANNECY VIRTUALLY OPENS THE DOORS OF ITS PRODUCTION PLANT
For the first time in its history, GGB Annecy will open the doors of the manufacturing plant...
PyroSlideTM 1100 Webinar:
Discover How to Beat the Heat with GGB’s New High Temperature Powder Metal Bearing Solution
Hydro White Paper:
GGB Composite Bearing Design with Improved Tribology and Machinability for Aggressive Applications
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Aerospace
Agriculture
Automotive
Construction
Energy
Fluid Power
Industrial
Medical
Oil & Gas
Primary Metals
Railways
Recreational
Eliminate Lubricants
Increase Service Life
Improve Efficiency
Replace Roller Bearings
Reduce Size / Weight
Simplify Assembly
Eliminate Corrosion
Reduce Noise
COATINGS
Tribological coatings
Polymer coatings
TS161™
TS225™
TS421™
Tribological Bearings
Metal-Polymer Bearings
DP4®
DTS10®
DX®10
Engineered Plastics Bearings
EP®15
EP®30
EP®22
Fiber Reinforced Composite Bearings
HPMB®
HSG
GAR-MAX®
Metal and Bimetal Bearings
PyroSlide™ 1100
AuGlide™
GGB-CSM®
Accessory Products
Bearing Assemblies
EXALIGN®
MINI
UNI
Rotary vane pumps produce hydraulic power for automatic transmissions.
Located in the cover of the transmission, they pull oil at low pressure from a sump in the bottom of the transmission and feed it at high pressure to the hydraulic system, transmission cooler and torque converter.
The vane rotor is supported by bearings at the front and back plates.
When mounted in the back plate, needle roller bearings can fail due to oil starvation, particularly after long periods of rest in different climatic conditions or during repeated stop-start operation.
To improve pump reliability, GGB DP4 metal polymer cylindrical bearings underwent trials to determine the feasibility of replacing the needle roller bearings.
The rigorous, extensive testing program included operation at full pump power and different engine regimes from 500 to 7 000 rpm under boundary, mixed and hydrodynamic lubrication, stop/start operation and oil starvation.
The results of these tests confirmed that the metal polymer composite cylindrical bushings provide superior pump reliability thanks to their excellent tribological performance of under dry, marginal and hydrodynamic lubricated operating conditions.
The benefits offered by GGB DP4 self-lubricating cylindrical bearings are the following:
Boot, Bonnet and Door Hinges
HVAC Compressors
Shock Absorbers and Struts
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