Needle Roller

Needle roller bearings are similar to cylindrical rollers in structure but the diameter of needle rollers is small relative to its length. The flat ends of needle rollers are designed to maintain the line contact between the needle rollers and the raceways. Due to the low cross section area of needle rollers, it holds a high load carrying capacity. Needle rollers are used in many applications of limited radial space. We design and manufacture needle rollers in various sizes and series according to our customer requirements and DIN 5402. Our perfect needle rollers are appropriate for a wide scale of operating conditions and applications. Needle roller bearings have its major role in automobile industry as vehicle components which are as rocker arm pivots, compressors, pumps and transmissions. We design the best needle roller bearing with various specifications and requirements of our precious clients for its several applications in different types of machines with the help of our design engineering department and expert team.

(A) For Cold Headed & Heat Treated Rollers ( Taper and Cylindrical)

Parameters Tolerances
upto 8.00 mm dia 8.00 to 13.00 mm dia Above 13.00 mm dia
O.D Size + 40 µm + 50 µm + 60 µm
O.D. Taper Within Dia Tolerance - -
Out of Roundness 30 µm max 35 µm max 40 µm max
Concavity of Convexity On O.D.


Up to 25.00 mm length 30 µm max.

25.00 to 50.00 mm length 50 µm max.

On Face 50 µm 80 µm 100 µm
Concentricity of Radii to O.D. 80 µm 100 µm 125 µm
Squareness 50 µm 65 µm 80 µm
Corner radius & Corner Distance + 150 µm + 150 µm + 150 µm
Length + 50 µm + 60 µm + 70 µm
Hardness + 1 HRC + 1 HRC + 1 HRC

(B) For Normal and Precision Class Ground / Honed Rollers

PARAMETER TAPER CYLINDRICAL SPHERICAL
Normal Precision Normal Precision Normal Precision
1. Dimensional
O.D. Size +5.00 µm ** - 10.00 µm +5.00 µm ** - 10.00 µm   +5.00 µm - 10.00 µm  +5.00 µm - 10.00 µm  +10.00 µm - 20.00 µm  +5.00 µm - 10.00 µm 
O.D. Grouping 10 µm       3 µm     6 µm    2 µm 20 µm   3 µm
O.D. Taper + 6 µm ** + 3 µm ** 1.5 µm 1.0 µm 20 µm 10 µm
Length 





Upto 15 mm length + 100 µm + 100 µm + 25 µm  + 15 µm + 20 µm + 15 µm
15 to 50 mm length + 125 µm + 125 µm + 25 µm + 20 µm + 25 µm + 20 µm
O.D. Radius - N/A - - N/A - - N/A - - N/A - + 0.50 mm + 0.25 mm
2. Form & Geometrical Accuracies
O.D. Crowning - N/A - As Required - N/A - As Required - N/A - - N/A -
Ovality (2 pt.) 2.00 µm 1.00 µm 2.00 µm 1.00 µm 3.00 µm 2.00 µm
Roundness   
1 : 500 2.50 µm 1.00 µm 2.50 µm 1.00 µm 4.00 µm 2.50 µm
15 : 500 1.50 µm 0.60 µm 2.00 µm 0.50 µm 3.00 µm 2.00 µm
Squareness
Upto 15 mm length 8.00 µm 5.00 µm 8.00 µm 5.00 µm 15.00 m 10.00 m
15 to 50 mm length 10.00 µm 6.00 µm 10.00 µm 6.00 µm 20.00 µm 15.00 µm
Ra on O.D.
Upto 10 mm dia.  0.14 µm 0.08 µm 0.14 µm 0.08 µm 0.30 µm  0.15 µm
10 to 18 mm dia. 0.18 µm 0.10 µm 0.18 µm 0.12 µm 0.40 µm 0.20 µm
Ra. on Face 0.30 µm 0.20 µm 0.30 µm 0.20 µm 0.30 µm 0.30 µm
Face Parallelism - N/A - - N/A - 10.00 µm 5.00 µm 10.00 µm 5.00 µm