SKFCylindrical Roller Bearing 85 x 150 x 28 mm, NJ Design, Axial Location One Direction

Product Description

What this part is

An SKF NJ 217 single-row cylindrical roller bearing: 85 mm bore, 150 mm outside diameter, 28 mm wide, in the NJ design with one integral rib on the inner ring.

Decoding the designation

NJ: one integral rib on the inner ring and two on the outer ring, giving axial location in one direction. 217: ISO 22 dimension series, 85 mm bore. Internal Design: the base SKF internal design; the reinforced high-capacity variant carries an E or EC suffix. Cage Type: pressed steel. Internal Clearance: CN, normal.

Specifications

Manufacturer: SKF. Part Number: NJ-217. Base Number: NJ217. Bearing Type: cylindrical roller bearing, single row, NJ design. Series: ISO 22 dimension series, 200 series. Bore: 85 mm. Outside Diameter: 150 mm. Width: 28 mm. Bore Type: straight. Number of Rows: 1. Rolling Elements: cylindrical rollers. Cage Type: pressed, roller-guided. Cage Material: steel. Internal Clearance: CN. Closure Type: open. Precision Class: ABEC 1 / P0. Flanges: one integral rib on the inner ring, two on the outer ring. Axial Location: one direction. Separable: yes, the inner ring lifts out of the roller-and-outer assembly. Basic Dynamic Load Rating (C): 170 kN / 38,217 lbf. Basic Static Load Rating (C0): 190 kN / 42,713 lbf. Limiting Speed: 5,300 rpm. Lubricant: grease or oil. Material: bearing steel. Item Weight: 4.1 lb. Maximum Temperature: 120 °C. Minimum Temperature: -40 °C. Design Units: metric. Harmonization Code: 8482.50.00.00. Country of Origin: Germany.

What these specifications mean in practice

The design suffix on a cylindrical roller bearing governs axial location. An NJ has one rib on the inner ring, so the roller set bears against that rib and the shaft is located in one direction. An N or NU lets the shaft float axially; an NUP has ribs on both sides and locates in both directions. Line-contact rollers give this type far higher radial capacity and stiffness than a ball bearing of the same envelope, at a lower speed ceiling, and the geometry suits a rigid, closely aligned housing and shaft.

Quantity and configuration

Unit Quantity: 1 Pc. One complete separable bearing: outer ring, roller complement with cage, and the ribbed inner ring.

Interchange guidance

The ISO base number NJ217 is shared across brands: NTN NJ217, Koyo NJ217 and NSK NJ217W are 85 x 150 x 28 mm with one inner-ring rib and a non-brass cage; FAG NJ217-E-TVP2 is the reinforced E design. The legacy US designation for this size is 2NU17. NU217 and N217 are non-locating and NUP217 locates in both directions, so those are related types. SKF NJ 217 ECJ and NJ 217 ECP are the reinforced EC design, rated C 190 kN and C0 200 kN.