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FKG HEADQUARTERS
TEL:+86 576 8604 5671
FAX:+86 576 8604 5670
EMAIL:china@fkgbearing.com

FKG BEARING(JIAXING) CO.,LTD
TEL:+86 573-87897022
FAX:+86 573-87897033
EMAIL:auto@fkgbearing.com

 

   
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1. BEARING MATERIALS:
The standard material for FKG bearing rings and balls is vacuum-processed high carbon chromium steel allowing high quality consistency and long bearing service life. Material symbol is GCr15.

Hardness of CCr15: HRC61-HRC63

CHEMICAL COMPOSITION OF BEARING STEEL
Steel No. Symbol Chemical Composition (Wt%)
Gcr15 AISI 52100 C
0.95-1.05
Cr
1.30-1.65
Si
0.15-0.35
Mn
0.2-0.4
P
<0.027
S
<0.02

THE COMPARISON TABLE FOR EACH STANDARD
China ISO USA Japan Germany France Sweden
GB   AISI JIS DIN NF  
Gcr15 683/xv11 52100 SUJ2 100Cr6 100C6 SKF3


2. HUB ASSEMBLY MATERIALS:
The materials for the inner rings of wheel hub assembly and balls is as same as the materials of bearings, Gcr15. For more details please refer to the above information.
The materials for the wheel hub of wheel hub assembly is 65Mn, which is equal to SAE1566.

CHEMICAL COMPOSITION OF 65Mn:
Steel no.
65MN
Chemical Composition (Wt%)
C
0.62-0.70
Si
0.17-0.37
Mn
0.90-1.20
P
<0.040
S
<0.040
CR
<0.25
Ni
<0.25
Cu
0.25

Hardness of 65Mn: HRC59-HRC64

TONE RINGS OF WHEEL HUB ASSEMBLY
FKG ABS tone ring's materials are SS-410L, which is a kind of high quality stainless steel with good corrosion resistant, good magnetic inductivity and high magnetic strength. All the tone rings are machined with high preciseness to ensure proper spacing between the teeth and the sensor.

SPACING BETWEEN THE SENSOR AND THE TONE RING:
Must be <0.7mm; Maintaining the proper spacing between the sensor and the tone ring is crucial to keep good operation of the ABS.

SENSORS OF WHEEL HUB ASSEMBLY WITH ABS:
FKG has applied an integrated sensor with high quality especially for Generation 3 wheel hub assembly to eliminate leak paths into the bearing, thus improving durability and minimizing the potential handling damage.


CAGES
In general, FKG cages are pressed steel ribbon cages & pressed steel snap cages for wheel bearing,
wheel hub assembly and A/C bearings, the cages are made from Nylon 66 with glass fiber.

SHIELDS & SEALS
FKG standard seals are made of oil and wear-resistant nitrile rubber(NBR) with a sheet steel reinforcement. SPCC is the standard material for shields we apply.

LUBRICATION
The grease can be applied upon customer's requirements. In general, Alvania R 2 is used for FKG small ball bearing. RONEX MP from ESSO Co. and ALVANIA R3 from SHELL are used for wheel hub bearings.
Details as per our grease conversion table.
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