NTNNU3309BX1CS65Single Row Cylindrical Roller Bearing, Straight Bore, 45 x 100 x 39.7 mm, Non-Locating, Wide Series

Product Description

What this part is:

NTN NU3309BX1CS65 single-row cylindrical roller bearing. Bore Diameter: 45 mm. Outside Diameter: 100 mm. Width: 39.7 mm. Bore Type: Straight. Closure Type: Open. Cage: steel. Precision: normal class. Series: NTN NU3300 series, 33 dimension series. Unit Quantity: 1 Pc. Complete bearing: ribbed outer ring, roller and cage assembly, plain inner ring.

Decoding the designation:

NU — non-locating cylindrical roller design, with guide ribs on the outer ring and a plain cylindrical inner ring.

33 — dimension series, the widest of the single-row cylindrical roller sections.

09 — bore code, 45 mm bore.

Specifications:

Rolling Elements: Cylindrical rollers. Number Of Rows: 1. Base Number: NU3309. Material: Bearing Steel. Condition: New – Open box.

Dimensions and mounting:

45 x 100 x 39.7 mm. An NU bearing carries radial load only and lets the shaft move axially inside the housing, which is what a floating bearing position needs. The wide 33 section holds a longer roller than a 02 or 22 series bearing of the same bore, so radial capacity rises for the same shaft diameter. The plain inner ring separates from the outer ring and can be fitted to the shaft independently.

Compatibility and replacement:

Cross-references in the reinforced E design: SKF NU 3309 ECP and FAG NU3309-E-TVP2. NTN NJ3309 is a related size with one inner-ring rib that locates the shaft in one direction; NTN NF3309 is a related size with ribs on the inner ring plus one outer rib, also locating in one direction.

Frequently asked questions:

What size is the NTN NU3309BX1CS65?

45 mm bore, 100 mm outside diameter, 39.7 mm width.

Does an NU bearing locate the shaft axially?

No. The NU design is non-locating and carries radial load only.

What replaces it?

SKF NU 3309 ECP or FAG NU3309-E-TVP2 in the reinforced E design.