ORS

ORS Bearings is one of the Premier manufactures of Radial Ball Bearings in the world. Founded in 1982 and began exporting product to the world in 1988. ORS mission and vision is to produce Superior quality bearings and to become a market leader in the world.

Their motto is “Keeping the Wheels of Industry Turning Trouble Free”.

National Precision Bearing is your source for ORS Bearings and we work directly with the factory in order to meet your requirements.

ORS Products

ORS has a wide production range of standard and special design radial ball bearings, roller bearings, rollers, rings, and other axisymmetric components. The production starts with the procurement of the best material for bearings and continues through the design of the product in order to meet and exceed customer requirements by doing quality inspection at all levels during manufacturing.

Single-Row and Double-Row Ball Bearings
Angular Contact Ball Bearings
Thrust Bearings, Cylindrical Roller Bearings
Thrust Bearings, Tapered Roller Bearings

Single-Row and Double-Row Ball Bearings

Includes bearings of 6000, 6200, 6300, 6400 standard series and special size bearings. Ball bearings have the highest speed ratings among all bearing types. Due to spherical shape of the balls, only the top part of the balls run over the raceways. Since it has a point contact with the raceways, unlike line contact in roller bearings, lower friction and higher speed ratings can be reached. Depending on the radial clearance and under normal working conditions, the bearing can be assembled with angle of 8-16 minutes. Standard serial production includes non-contact seal single-row deep groove ball bearings as well as contact seals. Bearings with a seal on each side do not require maintenance. Radial load capacity in double-row deep groove ball bearings is higher than that of single-row counterpart; however, axial load capacity will be smaller. The mounting of these bearings cannot be slanted.

6000 Series
6200 Series
6300 Series
6400 Series

Angular Contact Ball Bearings

Includes bearings of 7200, 7300, QJ series, and special size bearings. Single-row angular contact ball bearings can hold axial loads from only one side. Therefore, they need to be assembled with another bearing. Single-row angular contact ball bearings cannot be disassembled. Load angle is 40 degrees. The best load distribution is attained when the load ratio is 1 (Fa/Fr=1). These bearings can work under higher speed and should be close to its counterpart bearing as the changes in shaft temperature affects the bearing internal clearance.

Thrust Bearings, Cylindrical Roller Bearings

Cylindrical roller bearings are radial bearings that can be disassembled. Line contact between rings and rollers are modified to make sure raceway forms have a crown on them so that the shoulder stresses are minimized. Radial load capacity allows an assembly angle of 2-4 minutes. Cylindrical roller bearings have larger radial load capacity than ball bearings. The part numbering (N, NJ, NU, NUP, HJ, RNU, RN) is based on the type of inner ring and the components used in the bearing. These bearings mostly have plastic cages. N and NU types of cylindrical roller bearings and needle roller bearings can only be loaded radially. All others can have both radial and axial loads.

Thrust Bearings, Tapered Roller Bearings

Tapered roller bearings are classified as metric and inch series. Inch series tapered roller bearings have a special coding. Metric series bearings include 30000, 31000, 32000, and 33000 series and special size bearings. Tapered roller bearings can be disassembled. Line contact between rings and rollers are modified to make sure raceway forms have a crown on them so that the shoulder stresses are minimized. Tapered roller bearings can hold axial loads from only one side. Therefore, they need to be assembled with another bearing. The bearing is chosen based on the radial load ratings. These bearings should be close to its counterpart bearing as the changes in shaft temperature affects the bearing internal clearance. The internal clearance of the bearing should be chosen based on the counterpart bearing.