Raw Material
Our bearings use high quality steel grade-GCr15.
S.no. |
Parameter |
Details |
RITSUKA |
Chinese Product |
RITSUKA Advantage |
1 |
BOP |
Seal |
Inhouse |
Outsourced |
Inhouse manufacturing ensures better quality control on produced parts |
Grease |
Outsource |
Outsourced |
Outsourced from tier 1 supplier |
Spherical balls |
Outsource |
Outsourced |
Outsourced from tier 1 supplier |
2 |
Raw material |
Steel-GCr.15 |
High grade GCr.15 steel |
Substandard raw material |
1) High wear resistance
2) High fatigue resistance
3) Corrosion resistance |
Chemical Composition
Grade |
C (%) min.-max. |
Si (%) min.-max. |
Mn (%) min.-max. |
P (%) max. |
S (%) max. |
Ni (%) max. |
Cu (%) max. |
Cr (%) min.-max. |
GCr15 |
0.95~1.05 |
0.15~0.35 |
0.2~0.4 |
0.027 |
0.02 |
0.3 |
0.25 |
1.30~1.65 |
Salient features of GCr15
1) High wear resistance
2) High fatigue resistance
3) Corrosion resistance
Testing
Each of our bearings is further tested on international standards:
S.no. |
Parameter |
Details |
RITSUKA |
Chinese Product |
RITSUKA Advantage |
1 |
Testing Standard |
Incoming Quality Inspection |
100% inspection of incoming raw material |
No testing |
This ensure the incoming parts is within tolerance limit |
In process |
100% quality check at different processes to check the dimension and shape |
No quality check, since it requires extra manpower/extra cost |
This ensure the produced parts is within tolerance limit |
Final inspection |
All the products are checked before dispatch to ensure good quality |
No quality check, since it requires extra manpower/extra cost |
Defect free product to customer. |
Vibration Test
This test is performed to check the vibration in the bearing
S.no. |
Parameter |
Details |
RITSUKA |
Chinese Product |
RITSUKA Advantage |
1 |
Testing Standard |
Vibration Testing |
Inhouse vibration testing |
No testing |
This test is mandatory to check the bearing quality |
Fatigue test
This test is performed to check the life cycle of bearing.
S.no. |
Parameter |
Details |
RITSUKA |
Chinese Product |
RITSUKA Advantage |
1 |
Testing Standard |
Fatigue Test |
Inhouse life cycle test |
No testing |
High longevity |
Roundness testing
This test is performed to check the dimensions of bearing.
S.no. |
Parameter |
Details |
RITSUKA |
Chinese Product |
RITSUKA Advantage |
1 |
Testing Standard |
Roundness tester |
Checking the dimension by automatic test equipment |
No testing |
Precise dimension |
Hardness testing
This test is performed to check the hardness of material
S.no. |
Parameter |
Details |
RITSUKA |
Chinese Product |
RITSUKA Advantage |
1 |
Testing Standard |
Hardness Testing |
Checking the hardness by inhouse hardness tester |
No testing |
Hardness is between 60~65 |