Hybrid Ceramic ball bearings for turbochargers

Turbochargers bearings mainly use hybrid ceramic ball bearings, full ceramic ball design, no retainer, inner and outer rings made of special alloy bearing steel material, angular contact ball bearing design, precision level P2, ultra-quiet, and the speed can reach 120,000 rpm, Currently we can provide Hybrid Ceramic angular contact ball bearings made in China and Germany.

A turbojet is a type of turbo engine. It is characterized by completely relying on gas flow to generate thrust. It is usually used as the power of high-speed aircraft, but its fuel consumption is higher than that of turbofan engines. There are two types of turbojet engines: centrifugal and axial. The centrifugal type was invented by the British Sir Frank Whittle in 1930, but it was not until 1941 that the aircraft equipped with this type of engine went up to the sky for the first time and did not participate. World War II; Axial flow was born in Germany, and was put on the battlefield in the summer of 1944 as the power of the first practical jet fighter Me-262. Compared with centrifugal turbojet engines, the axial flow type has the advantages of small cross-section and high compression ratio. Most of today's turbojet engines are axial flow type.

1. HQW hybrid spindle bearings are used to meet the requirements of particularly demanding applications. The inner ring and outer ring are made of stainless steel whilst the balls are ceramic (silicon nitride). Hybrid spindle bearings can be recognised by the letters “HYQ” in their part number.

By using hybrid bearings, attainable speeds can be increased by up to 50%, as seen in the figure below. A significantly higher lifetime can be achieved in applications where there is insufficient lubrication.

2.   Bearing Brand: GRW

Bearing origin: Germany

Bearing model: D608/602C, D688/602C

Inner diameter X outer diameter X width: 8 X 22 X 7 mm, 8 X 16 X 6 mm

Inner and outer ring material: S440C stainless steel

Ball material: SI3N4 ceramic ball

Bearing type: full-ball angular contact bearing without cage

Accuracy level: European P4 level, American ABEC7 level

Limit speed of single bearing: 156,000 rpm, 200,000 rpm (oil lubrication)

Lubrication method: jet aviation kerosene lubrication while reducing temperature

Maximum operating temperature: 300 degrees Celsius

Application conditions: high-speed and high-temperature operation in a short time.

3. China CoatMaster

The ferrule material is made of X-Life's Cronidur30 high-nitrogen stainless steel, with special heat treatment

Process and cold treatment process, the rolling elements are made of high-performance hot isostatic pressing ceramic balls or ceramic rollers

Full-ball cageless angular contact ball bearings, angular contact ball bearings with silver-plated cages on the surface of high-strength alloy steel, four-point contact ball bearings and cylindrical roller bearings, precision grades P2, P4, lubrication methods are Jet aviation kerosene, the highest temperature resistance is 450 degrees

Designation:

HKSV788(8*16*6), HKSV708(8*22*7),  HKSV7000(10*26*8)

HKSV7001  HKSV7002 HKSV7004 HKSV71904

Advantages of Hybrid Bearings

• Significantly higher lifetime and grease service life.
• Increase in running speeds by up to 50%.
• Higher media and corrosion resistance.
• Electrically non-conductive.
• Non-magnetic balls.
• Continued operation even with emergency running properties.
• Lower friction coefficient.
• Lower heat generation.

The high temperature and high speed ceramic ball bearings of the following brands of turbochargers can be matched:

AMT NETHERLANDS (JET TURBINES), BEHOTEC (JET TURBINES), BVM, CIPPERER (CAT), FUNSONIC, JESUS ARTES-PEDEMARCO (JET), JETCAT, MODELLBAUPARADISE, PST (JET TURBINES LIN TURBINES), JES (JET TURBINES TURBINES), RAM, JET TURBINES TURBINES, SIM TURBINES , SKY PIPE, SWB, WREN (JET TURBINES).