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Product Range
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Needle Rollers
Needle
Rollers are mainly known as Rolling Element but also act as Bearing if to be
used on hard shaft and housing. Needle rollers are used where radial load
and medium speeds are encountered. Needle rollers can also be useful in
applications where the bearing envelope dimensions need to be kept to a
minimum. Needle rollers tend to have slightly rounded ends as a
stress-relieving feature, improving performance and life characteristics.
Cylindrical
Rollers
Cylindrical
rollers are used in bearings where the majority load is in the radial
direction. Although mostly cylindrical in shape, some specialist bearings
have convex barrel shapes or concave profiles depending on the application
type and conditions. Pure cylindrical roller bearings cannot support any
load in an axial direction. If axial support is required a separate bearing
arrangement will be required.
Technical
Specifications
Precision Needle Rollers and Cylindrical Rollers
MEC produces rolling elements based on DIN
5402 & ISO 3096 standards
Design
MEC rolling elements are available in different designs as shown
below:-
In addition rollers can be provided with end drops (Type ZB) as a stress
relieving feature thereby increasing life performance.
Material
MEC rolling elements are made of ultra clean Bearing Steel having
following chemical composition.
| Element |
C |
Cr |
Si |
Mn |
P |
S |
Ni |
Mo |
| Min% |
0.95 |
1.30 |
0.15 |
0.25 |
Nil |
Nil |
Nil |
Nil |
| Max% |
1.15 |
1.60 |
0.35 |
0.60 |
0.025 |
0.025 |
0.25 |
0.10 |
Geometrical Parameters
| GRADE |
|
G2 |
G3 |
G5 |
| DIAMETER GAUGE |
µm |
2 |
3 |
5 |
| CIRCULARITY |
µm |
< 1.0 |
< 1.5 |
< 2.5 |
| CYLINDRICITY |
µm |
< 1.0 |
< 1.0 |
< 1.5 |
| ROUGHNESS |
µm |
< 0.10 |
< 0.10 |
< 0.15 |
| LENGTH |
mm |
<0.20 |
<0.20 |
h13 |
| HARDNESS |
HRc |
58- 64 THRU HARDENED |
In addition to above mentioned specifications rolling elements with special
tolerance limits (plus tolerances, hardness as low as 45 HRc etc) can be
supplied on request.
Contact Us at
307, Shivlok-1, Karampura, Commercial Complex, New
Delhi - 110015,
(INDIA) (Tel.No. - 91-11-25920633 / Fax -
91-11-25920635 / Email -
info@mecneedle.com)
©
MEC Bearings Pvt. Ltd. All Rights Reserved (Terms
of Use)