INARNA6913P5Double-Row Needle Roller Bearing – 72 mm Under-Roller Diameter, 90 mm OD, 45 mm Width, Class 5 Precision

Product Description

What this part is

INA RNA6913 P5 needle roller bearing, double row, open, to DIN 617 / ISO 1206. The part is a machined outer ring carrying two rows of needle rollers and cages; the shaft forms the inner raceway. Under-Roller Diameter (Fw): 72 mm. Outside Diameter: 90 mm. Width: 45 mm. Precision Class: P5, ISO tolerance class 5. Number Of Rows: 2. Rolling Elements: needle rollers. Closure Type: open. Minimum Chamfer Dimension: 1 mm. Operating Temperature: –30 °C to 120 °C. Design Units: Metric.

Decoding the designation

RNA — needle roller bearing supplied as a machined outer ring plus roller-and-cage assemblies, running on a hardened and ground shaft raceway.

69 — the heavy dimension series, which sets the 45 mm width and the 9 mm radial section between a 72 mm roller circle and a 90 mm outside diameter.

13 — the size code inside that series.

P5 — ISO tolerance class 5: tighter bore, outside diameter and running accuracy than the standard class, giving lower runout and closer shaft location.

What these specs mean in practice

Two rows of needles across a 45 mm width give this bearing a very high radial capacity for a 9 mm wall, and the second row also carries a tipping moment that a single row would pass straight into the housing. That combination is what puts RNA69 bearings into machine tool feed units, printing and converting rolls, rope sheaves and heavy planetary gear pins.

Precision Class: P5 tightens the outer ring form and the radial runout. On a part whose inner raceway is the shaft itself, that tolerance only pays out if the shaft seat is ground and hardened to match; the two tolerances add.

Closure Type: open, so lubricant is supplied by the housing — grease or circulating oil — and the machined ring carries a lubrication hole.

Quantity and configuration

Unit Quantity: 1 Pc.

Mounting data

Shaft seat hardened and ground to 72 mm; it forms the inner raceway. Housing bore 90 mm. Outer ring width C: 45 mm. Minimum Chamfer Dimension: 1 mm at the ring corners.

Interchange guidance

The current Schaeffler execution on this envelope is the RNA6913-ZW-XL, same 72 x 90 x 45 mm geometry and the same double-row layout. Where the shaft cannot be hardened, the NA6913 execution of the same outside diameter adds an inner ring and runs on a 65 mm soft shaft. Bearing Material: chrome steel. RNA6913 is the ISO designation and is carried across makers on this envelope; match the tolerance class as well as the size, since a standard-class part on the same envelope is a related size rather than a like-for-like swap.