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Are you aware there are different types of bearings? It's true. You'll find most of these types in your car's various systems. See, the word "bearing" usually refers to a component that reduces friction. However, different types of machinery require different types of bearings. One of these bearings is the Low friction bearings. Unlike antifriction bearings, friction bearings don't have sliding nor moving parts. Rather, this type of bearing has a fixed, non-moving surface. It's also typically made up of machined-metal or pressed-in bushing. Now when it comes to your car, this bearing's soft consistency prevents foreign matter from spreading in the engine. 

SKF deep groove ball bearings with low-friction seals, designation suffixes RSL, 2RSL or RZ, 2RZ, are manufactured in three designs depending on bearing series and size 

bearings in the 60, 62, and 63 series up to 25 mm outside diameter are equipped with RSL seals to design (a)

bearings in the 60, 62, and 63 series from 25 mm and up to and including 52 mm outside diameter are equipped with RSL seals to design (b)

other bearings have RZ-seals (c).

Revolutionary technological advancements in this field have included the creation of various low-friction skf bearings, consisting of X-tracker hub units, turbocharger units, rotor positioning units and sensor units used for electric motors.

A further increase in efficiency is provided by the AMG SPEEDSHIFT PLUS 7G-TRONIC automatic gearbox featuring a fuel-economy torque converter with mass-damper pendulum, low-friction bearings and thermal management for the transmission fluid. Additional fuel-consumption reductions are achieved by low-friction axle drives, the electromechanical AMG speed-sensitive sports steering, the optimised belt drive and the adaptive management of all auxiliary units and pumps.

Additionally, the optimised damping also allows for a substantial reduction in torque converter clutch slip even at low loads, again contributing to better fuel economy. The optimised attenuation of imbalances and vibration in the gearbox also ensures a faster response to accelerator pedal actuation. Low-friction timken bearings and a new thermal management for the transmission fluid further reduce fuel consumption. 

PCM252830B

PCM455030M

PCM657050M