33018 FBJ 90x140x39 Tapered Roller Bearing

33018 FBJ - Product Characteristics

33018 FBJ is a single-row tapered roller bearing manufactured by FBJ, with a 90 mm bore diameter, 140 mm outside diameter and 39 mm overall width. The FBJ catalog also specifies B = 39 mm, C = 32.5 mm, dynamic load rating Cr = 216 kN and static load rating C0 = 365 kN.

Its defining construction feature is the use of tapered rollers running on tapered raceways. This geometry allows the bearing to carry combined radial and axial loads, while a single-row tapered roller bearing supports axial load primarily in one direction.

Dimensions

For 33018 FBJ, the verified dimensions are:

d - Bore Diameter: 90 mm
D - Outside Diameter: 140 mm
T / t - Overall Bearing Width: 39 mm
B - Inner Ring Width: 39 mm
C - Outer Ring Width: 32.5 mm
r: 2 mm
R: 1.5 mm
Weight: 2.48 kg

In the commercial size designation 90x140x39 mm, the third dimension is the overall bearing width T. In this specific bearing, the inner ring width B is also 39 mm, while the outer ring width C is 32.5 mm.

Bearing Construction

33018 FBJ is a single-row tapered roller bearing.

This bearing type has a separable construction consisting of:

cone - the inner ring with tapered rollers and cage,

cup - the separate outer ring.

This separable arrangement allows the cone assembly and cup to be mounted independently.

The tapered roller and raceway geometry creates a combined contact system capable of transmitting both radial and axial forces.

Loads and Operating Principle

For the exact 33018 FBJ reference, the FBJ catalog specifies:

Basic Dynamic Load Rating Cr: 216 kN
Basic Static Load Rating C0: 365 kN

A single-row tapered roller bearing is designed to carry combined radial and axial loads.

Axial load is carried primarily in one direction by a single bearing. Where axial loads act in both directions, tapered roller bearings are commonly arranged in a technically appropriate pair.

The final bearing arrangement determines the working clearance or preload.

Clearance and Mounting

No special clearance suffix is shown in the verified designation 33018 FBJ.

For tapered roller bearings, correct adjustment during installation is important because the operating clearance or preload affects roller-raceway contact, bearing stiffness and operating temperature.

A specific clearance or preload value should not be assumed from the 33018 designation alone. It depends on the complete bearing arrangement, fits, temperature, load and mounting method.

Meaning of the 33018 FBJ Designation

33018 is the basic designation of this tapered roller bearing size and construction.

FBJ identifies the bearing brand.

The FBJ catalog lists the exact reference within the 33000 tapered roller bearing series and confirms the 90x140x39 mm dimensions.

No additional suffix in the supplied designation indicates a special internal clearance, precision class or modified cage design, so such features should not be added without separate manufacturer documentation.

Selection and Interchangeability

Bearings designated 33018 are available from several manufacturers, often with the same principal dimensions. That does not automatically prove complete technical interchangeability.

Before replacing 33018 FBJ with another brand, compare at least:

• d = 90 mm
• D = 140 mm
• T = 39 mm
• B = 39 mm
• C = 32.5 mm
• bearing geometry
• dynamic and static load ratings
• precision requirements
• mounting and adjustment requirements
• operating conditions

Matching dimensions are necessary, but they are not always sufficient for a technically correct substitution.

Technical Specification

Designation: 33018
Brand: FBJ
Bearing Type: Single-row tapered roller bearing
English Technical Name: Single row tapered roller bearing
Series: 33000
Dimensions: 90x140x39 mm
d - Bore Diameter: 90 mm
D - Outside Diameter: 140 mm
T / t - Overall Width: 39 mm
B - Inner Ring Width: 39 mm
C - Outer Ring Width: 32.5 mm
r: 2 mm
R: 1.5 mm
Basic Dynamic Load Rating Cr: 216 kN
Basic Static Load Rating C0: 365 kN
Weight: 2.48 kg
Construction: Single-row, separable cone + cup
Rolling Elements: Tapered rollers

FAQ

What are the dimensions of 33018 FBJ?

The bearing measures 90x140x39 mm: d = 90 mm, D = 140 mm and overall width T = 39 mm. The FBJ catalog also gives B = 39 mm and C = 32.5 mm.

What type of bearing is 33018 FBJ?

It is a single-row tapered roller bearing.

What loads can 33018 FBJ carry?

Its tapered roller construction allows it to carry combined radial and axial loads. A single bearing carries axial load primarily in one direction.

What are the load ratings of 33018 FBJ?

The FBJ catalog specifies Cr = 216 kN and C0 = 365 kN.

Is 33018 FBJ a separable bearing?

Yes. A single-row tapered roller bearing uses a separable cone + cup construction.

Can a 33018 bearing from another brand replace 33018 FBJ?

Not automatically. Dimensions, load ratings, geometry, precision and mounting requirements should be compared before substitution.

Does 33018 FBJ require clearance or preload adjustment?

Tapered roller bearing arrangements generally require correct setting of operating clearance or preload. The required value depends on the specific bearing arrangement and cannot be determined from the 33018 designation alone.

AI Overview

33018 FBJ 90x140x39 is a single-row tapered roller bearing by FBJ with a 90 mm bore, 140 mm outside diameter and 39 mm overall width. The FBJ catalog specifies C = 32.5 mm, Cr = 216 kN, C0 = 365 kN and weight 2.48 kg. Its tapered roller geometry supports combined radial and axial loads.

SHORT DESCRIPTION

33018 FBJ 90x140x39 is a single-row tapered roller bearing by FBJ. It has a bore diameter d = 90 mm, outside diameter D = 140 mm and overall width T = 39 mm. The FBJ catalog specifies B = 39 mm, C = 32.5 mm, dynamic load rating Cr = 216 kN, static load rating C0 = 365 kN and weight 2.48 kg. Its separable cone + cup construction with tapered rollers allows combined radial and axial load carrying.