 
NEEDLE ROLLER |
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 ROLLER |
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.
Precision needle rollers and cylindrical rollers have multiple uses in a
variety of industries including automotive, textile and electrical
equipments. They are mainly used as bearing rolling elements to transmit
torque and reduce friction. In addition they can also serve as precision
shafts or as precision locating pins in some applications.
Most commonly they are used in the following applications
- Needle Bearings
- Cylindrical Bearings
- Universal Joints
- Constant Velocity Joints
- Starter Drive
- Roller Clutches
- Planetary Gear Sets
- Rocker Arm
- Cam Rollers
- Rollerized Cam Lifters
- As Pins and Dowels for various applications
|
Dimensions And Design
MEC Needle Rollers are available in designs according to DIN 5402 Sheet3,
and IS 4217 - 1981, as shown below.
In addition rollers with a controlled contour profile (end drops or
crowning or end relieved) are available to reduce end stresses. In addition,
special end forms provide performance benefits for specific kinds of
applications.
Material
MEC Needle Roller are made of ultra clean rolling bearing steel SAE 52100
as specified in DIN 17 230 with a core hardness (670+170) HV or (58+7)HRC
Alternate Materials
Apart from standard material Needle Rollers from other materials like
Stainless Steel (AISI 304, AISI 316, AISI 402 etc), Mild Steel, any other
Alloy Steel can be manufactured. For details kindly consult our
marketing office.
Diameter And Lateral Surface
| Grade |
Gauge
(value in µm) |
Circularity µm |
Surface
Roughness Ra in µm |
Length |
| G2 |
0 -2 |
-1 -3 |
-2 -4 |
1 |
0.2 |
h13 |
| -3 -5 |
-4 -6 |
-5 -7 |
| -6 -8 |
-7 -9 |
-8 -10 |
| G5 |
0 -5 |
-3 -8 |
-5 -10 |
2.5 |
0.25 |
Corner Dimensions
| Dw |
r1 |
r1 |
r2 |
End
Radius 'R' |
| Over |
upto |
r2 |
|
|
|
|
|
|
Min. |
Max. |
Max. |
Min |
Max. |
| 0.9 |
1.5 |
0.1 |
0.4 |
0.6 |
Dw/2 |
Lw/2 |
| 1.5 |
3.0 |
0.2 |
0.6 |
0.8 |
|
|
| 3.0 |
6.0 |
0.3 |
0.8 |
1.0 |
|
|
All dimensions are in mm unless otherwise specified.
1 µm = 0.001 MM
Alternate Specifications
In addition to above mentioned specifications Needle Rollers and
Cylindrical Rollers with special tolerance limits (plus tolerance, hardness
as low as 45 HRc etc) can be supplied on request. Kindly contact the
marketing office for details.
MEC specializes in manufacture of precision Needle Rollers and Cylindrical
Rollers and offers widest range of high quality rollers with different end
shapes.
| |
Diameter |
Length |
| From |
To |
From |
To |
| Millimeter mm |
0.900 |
12.00 |
3.00 |
100.00 |
| Inches " |
0.0354 |
0.4724 |
0.1181 |
3.940 |
Standard Sizes
| BR
Series |
BP Series |
BPM
Series |
| 0.900x9.50 |
3.000x19.80 |
1.500x6.70 |
2.500x5.00 |
8.000x8.00 |
| 1.000x6.50 |
3.000x21.80 |
1.500x10.10 |
3.000x17.80 |
8.000x12.00 |
| 1.91x11.80 |
3.000x23.80 |
1.500x14.10 |
3.000x5.00 |
8.000x15.80 |
| 1.500x7.80 |
3.000x25.80 |
2.000x4.80 |
3.500x17.80 |
8.000x20.00 |
| 1.500x9.30 |
3.000x29.80 |
2.000x5.80 |
4.000x5.00 |
8.000x23.80 |
| 1.500x9.80 |
3.000x31.80 |
2.000x30.00 |
4.000x7.50 |
8.000x24.00 |
| 1.500x11.80 |
3.000x39.80 |
2.040x8.40 |
4.000x4.00 |
8.000x32.00 |
| 1.500x13.60 |
3.0025x25.10 |
2.220x7.40 |
4.000x.8.00 |
9.000x9.00 |
| 1.588x10.06 |
3.0025x28.10 |
2.500x 6.80 |
4.000x12.00 |
9.000x14.00 |
| 1.811x13.46 |
3.160x11.17 |
2.500x7.80 |
4.000x13.80 |
9.000x21.00 |
| 2.000x7.80 |
3.175x16.85 |
2.500x8.80 |
4.000x17.80 |
9.525x9.50 |
| 2.000x 9.80 |
3.175x19.05 |
2.500x23.80 |
4.000x19.80 |
10.000x10.00 |
| 2.000x11.80 |
3.175x19.80 |
2.510x10.80 |
5.000x5.00 |
10.000x16.80 |
| 2.000x13.80 |
3.175x25.40 |
3.000x8.80 |
5.000x6.00 |
10.000x22.00 |
| 2.000x15.80 |
3.175x21.25 |
3.000x9.80 |
5.000x8.00 |
10.000x24.00 |
| 2.000x17.80 |
3.175x31.75 |
3.000x10.80 |
5.000x10.00 |
10.000x50.00 |
| 2.000x19.80 |
3.200x19.30 |
3.000x11.80 |
5.000x12.00 |
11.000x15.00 |
| 2.000x21.80 |
3.500x17.80 |
3.000x12.80 |
5.000x25.00 |
11.000x26.95 |
| 2.000x23.80 |
3.500x19.80 |
3.000x14.80 |
6.000x6.00 |
12.000x40.00 |
| 2.000x25.80 |
3.500x23.80 |
3.500x10.80 |
6.000x8.00 |
12.700x48.00 |
| 2.000x30.00 |
3.500x25.80 |
3.500x11.80 |
6.000x10.00 |
|
| 2.000x32.00 |
3.500x27.80 |
3.500x12.80 |
6.000x12.00 |
|
| 2.000x43.60 |
3.500x29.80 |
3.500x15.80 |
6.000x16.80 |
|
| 2.015x10.30 |
3.968x19.05 |
3.500x23.80 |
6.000x18.00 |
|
| 2.381x10.57 |
3.970x28.10 |
4.000x5.00 |
6.000x20.00 |
|
| 2.382x19.80 |
4.000x25.40 |
4.000x10.80 |
6.000x24.00 |
|
| 2.385x12.55 |
4.000x29.80 |
4.000x12.80 |
6.000x40.00 |
|
| 2.387x16.85 |
4.000x39.80 |
4.000x14.80 |
6.000x42.42 |
|
| 2.500x9.80 |
4.500x15.80 |
4.000x15.80 |
6.350x6.35 |
|
| 2.500x10.80 |
4.757x25.40 |
5.000x8.00 |
6.375x12.70 |
|
| 2.500x11.80 |
4.757x34.925 |
5.000x14.00 |
7.000x7.00 |
|
| 2.500x13.80 |
4.757x30.15 |
5.000x18.00 |
7.000x10.00 |
|
| 2.500x15.80 |
5.000x15.80 |
5.542x13.67 |
7.000x12.00 |
|
| 2.500x17.80 |
5.000x16.50 |
5.800x11.70 |
7.000x13.00 |
|
| 2.500x19.80 |
5.000x19.80 |
6.000x8.00 |
7.000x14.00 |
|
| 2.500x23.80 |
5.000x23.30 |
6.000x10.00 |
7.000x16.00 |
|
| 2.500x25.80 |
5.000x29.80 |
6.350x9.00 |
7.000x21.00 |
|
| 2.778x11.17 |
5.000x39.80 |
6.500x10.00 |
7.000x32.00 |
|
| 3.000x9.80 |
5.542x19.05 |
6.500x12.00 |
7.500x12.00 |
|
| 3.000x11.80 |
6.000x29.80 |
7.000x12.00 |
7.500x15.80 |
|
| 3.000x13.80 |
6.350x19.05 |
7.250x12.00 |
7.934x25.40 |
|
| 3.000x15.80 |
7.000x 12.60 |
7.500x12.00 |
7.934x38.15 |
|
| 3.000x17.80 |
7.500x12.50 |
7.513x13.00 |
7.937x7.937 |
|
All dimensions are in mm unless otherwise specified.
1 INCH = 25.4 MM
The listed sizes cover only standard range. In addition needle rollers
and cylindrical rollers with any nominal dimension can be manufactured in
large volumes.
In order to ensure defect free and robust packing, the rollers are packed
in corrugated boxes (minimum BS 13 Kg/cm2) double sealed with anti rust VCI
paper. Further these boxes are packed in outer cartons (minimum BS 20
Kg/cm2) and sealed.
Alternate Packing
For alternate packing in Pouches or boxes with other specifications, kindly
consult the
marketing office.
