SKF NU230 EC-C3 Bearing

SKF NU230 EC-C3 bearing Product Description This NU230 ECJ bearing is a single row cylindrical roller bearing, it has no flanges on the inner ring, an optimized internal design, a stamped steel cage, roller centred and a normal radial internal clearance. The bearing's dimensions are...

Description

SKF NU230 EC-C3 bearing

Product Description

This NU230 ECJ bearing is a single row cylindrical roller bearing, it has no flanges on the inner ring, an optimized internal design, a stamped steel cage, roller centred and a normal radial internal clearance. The bearing's dimensions are 150x270x45.

 

SKF NU230 Cylindrical roller bearings are with two-piece machined brass cage, roller centred. The advantages of this machined brass cage include:

1. very high strength,

2. suitable for very high speeds and accelerations,

3. suitable for high temperatures,

4. high endurance limit,

 

Cylindrical roller bearings

In bearings of this type, the cylindrical rollers are in linear contact with the raceways. They have a high radial load capacity and are suitable for high speeds.

Cylindrical roller bearings, in which either the inner or outer rings has two ribs and the other ring has one, are capable of taking some axial load in one direction Double-row cylindrical roller bearings have high radial rigidity and are used primarily for precision machine tools. Some cylindrical roller bearings have no ribs on either the inner or outer ring, so the rings can move axially relative to each other. These can be used as free-end bearings.

There are different types designated as NU, NJ, NUP, N, NF (for single-row cylindrical roller bearings), NNU, and NN (for double-row cylindrical roller bearings depending on the design or absence of side ribs). The outer and inner rings of all types are separable .

 

Cylindrical roller bearings, single row. Unit system: Metric. Bore diameter d: 150mm. Outside diameter D: 270mm. Width B: 45mm. Width outer ring (NUB, NJF) C: 45mm. Shoulder diameter inner ring (NJ, NUP, N, NF, NJF) d1: 193mm. Shoulder diameter outer ring (NU, NJ, NUP, NUB, NF, NJF) D1: 232.2mm. Shoulder diameter outer ring (only LSB = ORD10 >420, replacement for ORD30) D1: 234mm. Raceway diameter inner ring (NU, NJ, NUP, NUB, NJF) F: 182mm. Raceway diameter outer ring (N, NF, NJF) E: 242mm. (Large) corner radius inner ring (N, NJ, NUP, NF, NJF) r1,2min: 3mm. Corner radius outer ring (NU, NJ, NUP, NUB, NJF) r1,2min: 3mm. Corner radius inner ring (only LSB = ORD10 >420, instead of IRL05) r3,4min: 3mm. Corner radius outer ring (only LSB = ORD10 >420, instead of ORL05) r3,4min: 3mm. Corner radius outer ring (N, NF, NJF) r3,4min: 3mm. (Small) corner radius inner ring (NU, NJ, NUB, NJF) r3,4min: 3mm. Permissible axial displacement from the normal position of one bearing ring relative to the other s: 2.5mm. Smallest permissible outside diameter of spacer sleeve (all) damming: 164mm. Largest permissible outside diameter of spacer sleeve (NU, NJ, NUB, NJF) dam ax: 178mm. Smallest permissible outside diameter of shaft shoulder (NU, NJ, NUP, NUB; not for tapered bore) doming: 186mm. Largest permissible inner diameter of housing shoulder or spacer sleeve (all) Amax: 254.6mm. Largest permissible radius at the transition between bearing seat and housing shoulder (NU, NJ, NUP, NUB) remix: 2.5mm. Largest permissible radius at the transition between bearing seat and shaft shoulder (NU, NUB; not for tapered bore) remix: 2.5mm. Basic dynamic load rating C: 510kN. Basic static load rating C0: 600kN. Fatigue load limit Pu: 64kN. Reference speed: 2600r/min. Limiting speed: 2800r/min. Calculation factor: 0.15. Angle ring: HJ 230 EC.

 

Dimensions

d               150  mm

D              270  mm

B              45    mm

D1        232.2       mm

F               182  mm

r1,2  min. 3       mm

r3,4  min. 3       mm

s       max.         2.5   mm

Abutment dimensions

da    min. 164  mm

da    max.         178  mm

db    min. 186  mm

Da    max.         254.6       mm

ra     max.         2.5   mm

rb     max.         2.5   mm

Calculation data

Basic dynamic load rating      C              510  kN

Basic static load rating   C0            600  kN

Fatigue load limit    Pu            64    kN

Reference speed                     2600         r/min

Limiting speed                         2800         r/min

Calculation factor  kr             0.15  

Limiting value e               0.2    

Axial load factor     Y               0.6    

Mass

Mass bearing                  10.3 kg

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