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Factory & Process Tour |
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| Company
Profile |
Technical
Details |
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Size 2.75 MB |
Size 136 KB |
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| Technical Specification of Bearing Rollers |
SPECIFICATION OF TAPER ROLLER |
| Sr. No. |
PARAMETER |
TOLERANCE |
| 1 |
DIAMETER |
(+/-) 2μm (Size Variation Within 3μm) |
| 2 |
TAPER |
(+/-) 2μm (Maximum) |
| 3 |
OVALITY |
1μm (Maximum) |
| 4 |
LENGTH (Tolerance on Basic Size) |
+50 To -200μm |
| 5 |
FACE SQUARENESS |
8μm (Maximum) |
| 6 |
OD S/ROUGHNESS (Ra) |
0.10μm (Maximum) |
| 7 |
FACE S/ROUGHNESS (Ra) |
0.20μm (Maximum) |
| 8 |
ROUNDNESS (Filter : 1-15) |
1μm (Maximum) |
| 9 |
HARDNESS |
60 To 64 HRC |
| 10 |
VISUAL INSPECTION |
FREE FROM RUST, DENT MARKS, SPIRAL LINES ON OD, OUT OF RADIUS |
| 11 |
MATERIAL |
SAE 52100 |
| 12 |
MICRO STRUCTURE |
FINE TEMPERED MARTENSITE WITH UNDISOLVED CARBIDES |
| 13 |
CROWNING (Pt) |
DEPEND ON GROUND LENGTH |
| NOTE: > The Crowning value is to be consider only for 75 to 80% of centre Roller length. |
Ground Length (MM) |
CROWNING (Pt) μm |
0 TO 15 |
1 TO 2 |
15 TO 25 |
1 TO 3 |
25 TO 30 |
1 TO 4 |
30 TO 35 |
1 TO 5 |
25 TO 45 |
2 TO 6 |
45 TO 50 |
2 TO 7 |
50 ABOVE |
3 TO 8 |
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| SPECIFICATION OF CYLINDRICAL ROLLER |
Sr.
No. |
PARAMETER |
TOLERANCE |
| 1 |
DIAMETER |
 (+/-) 1.5μm (Size Variation Within 2μm) |
| 2 |
OVALITY |
1μm (Maximum) |
| 3 |
LENGTH (Tolerance on Basic Size) |
- 20μm (Maximum), Grouping within 6μm |
| 4 |
FACE SQUARENESS |
6μm (Maximum) |
| 5 |
OD S/ROUGHNESS (Ra) |
0.10μm (Maximum) |
| 6 |
FACE S/ROUGHNESS (Ra) |
0.20μm (Maximum) |
| 7 |
ROUNDNESS (Filter : 1-15) |
1μm (Maximum) |
| 8 |
HARDNESS |
60 To 64 HRC |
| 9 |
VISUAL INSPECTION |
FREE FROM RUST, DENT MARKS, SPIRAL LINES ON OD, OUT OF RADIUS |
| 10 |
MATERIAL |
SAE 52100 |
| 11 |
MICRO STRUCTURE |
FINE TEMPERED MARTENSITE WITH UNDISOLVED CARBIDES |
| 12 |
CROWNING (Pt) |
DEPEND ON GROUND LENGTH |
| NOTE: > The Crowning value is to be consider only for 75 to 80% of centre Roller length. |
Ground Length (MM) |
CROWNING (Pt) μm |
MIN. |
MAX. |
MIN. |
MAX. |
6 |
7 |
1 |
3 |
8 |
10 |
1.5 |
5 |
11 |
14 |
2 |
7 |
15 |
17 |
3 |
9 |
18 |
19 |
5 |
10 |
20 |
22 |
7 |
14 |
23 |
7 |
15 |
24 |
25 |
8 |
16 |
26 |
8 |
17 |
27 |
28 |
8 |
18 |
29 |
30 |
9 |
18 |
31 |
32 |
9 |
19 |
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| SPECIFICATION OF SPHERICAL ROLLER |
Nominal Dia. Of Roller |
Wobble of Face |
Tol. On Length |
Conicity |
Ovality |
Surface Roughness on OD. |
Surface Roughness on Face. |
Hardness |
Material |
Max. |
Min. |
0 - 10 |
8μm |
-0 |
-15 |
12μm |
1.5μm |
0.15 |
0.30 |
60To 64 HRC |
SAE 52100 |
10 - 20 |
10μm |
-0 |
-20 |
15μm |
2.0μm |
0.20 |
0.40 |
20 - 40 |
12μm |
-0 |
-30 |
18μm |
2.5μm |
0.25 |
0.50 |
40 - |
20μm |
-0 |
-40 |
25μm |
3.0μm |
0.25 |
0.60 |
| VISUAL INSPECTION |
FREE FROM RUST, DENT MARKS, SPIRAL LINES ON OD, OUT OF RADIUS |
| MICRO STRUCTURE |
FINE TEMPERED MARTENSITE WITH UNDISOLVED CARBIDES |
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