NNCF 5008 CV

Double-row full complement cylindrical roller bearings of type NNCF requiring additional lubrication

Double row full complement cylindrical roller bearings can be fitted with more rollers and are therefore suitable for very high radial loads as well as medium speeds. The NNCF type bearings have three retaining edges on the inner ring and a retaining edge on one side of the outer ring, which allows limited unidirectional axial displacement. A retaining ring on the outer ring holds the bearing components together. The retaining ring cannot be subjected to axial loads during operation.

  • Very high radial load carrying capacity
  • High radial stiffness
  • Long service life
  • Unidirectional axial positioning of the shaft possible
  • Supplementary lubrication structure

+86 13817962999

Overview
Technical Parameters

Overview

Skim Through

Size

Inner Diameter40.0mm
Outer Diameter68.0mm
Width38.0mm

Performance

Basic rated dynamic load106.0kN
Basic rated static load140.0kN
Reference speed4800.0r/min
Limiting speed6000.0r/min

Properties

Bearing parts Complete set of bearings
Axial displacement capacity In one direction
Number of columns 2
Locating features, bearing outer ring None
Hole type Cylindrical bore
Cage without
Number of flanges, outer ring 1
Number of retaining edges, inner ring 3
Loop flanges no
Radial clearance CN
Tolerance class Normal
Coating Without
Sealing Without
Lubrication without
Relubrication with

Logistics

Net weight0.554kg
eClass Code 23-05-09-01
UNSPSC Code 31171505

Technical Parameters

Technical Parameters

Size

d40.0mm Hole diameter
D68.0mm Outer diameter
B38.0mm Width
d1 ≈50.5mm Diameter of inner ring retaining edge
D1 ≈57.2mm Outer edge diameter
b1 max.4.5mm Outer ring lubrication groove width
K3.0mm Lubrication hole diameter (outer ring)
s1.5mm Allowable axial displacement of the bearing collar in normal position relative to the other collar
r1,2 min.1.0mm Chamfering dimensions (open bearings)
r3,4 min.0.3mm Chamfering dimensions
Parameter r3.4 has the parameter specified here or the same parameter as r1.2.

Shoulder dimensions

da min.44.8mm Shaft shoulder diameter
das max.63.3mm Shaft shoulder diameter47.7mm
Da Bearing housing shoulder size
ra max.1.0mm Chamfering radius
rb max.0.3mm Chamfering radius

Data calculation

Basic dynamic load rating C106.0kN
Basic rated static loadC0140.0kN
Fatigue Load LimitPu17.0kN
Reference speed4800.0r/min
Limit speed6000.0r/min
Minimum load factorkr0.5

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