15123/245 TIMKEN 31.75x62x18.161 mm Tapered Roller Bearing

PRODUCT DESCRIPTION

15123/245 TIMKEN, full designation 15123/15245, is a single-row tapered roller bearing measuring 31.75x62x18.161 mm. The complete set consists of 15123 cone and 15245 cup. TIMKEN specifies a 31.750 mm bore, 61.999 mm outside diameter and 18.161 mm overall width. Dynamic radial rating C1 is 59.9 kN and static radial rating C0 is 53.9 kN. It belongs to the TIMKEN 15000 inch series.

15123/245 TIMKEN 31.75x62x18.161 mm Tapered Roller Bearing

15123/245 TIMKEN is a single-row tapered roller bearing with dimensions 31.75x62x18.161 mm. The complete TIMKEN designation is 15123/15245, combining the 15123 cone with the 15245 cup.

Complete identification:

TIMKEN -> 15123/15245 -> cone 15123 -> cup 15245 -> 31.75x62x18.161 mm

15123/245 TIMKEN - Characteristics

Manufacturer: TIMKEN
Short Designation: 15123/245
Full Designation: 15123/15245
Bearing Type: Single-row tapered roller bearing
TIMKEN Type: TS - Tapered Single
Series: 15000
Cone: 15123
Cup: 15245
Dimensions: 31.75x62x18.161 mm

TIMKEN classifies the 15123/15245 combination as a TS single-row tapered roller bearing.

15123/245 TIMKEN Dimensions

Official TIMKEN dimensions for 15123/15245 are:

d - Bore Diameter: 31.750 mm
D - Outside Diameter: 61.999 mm
T - Overall Width: 18.161 mm
B - Cone Width: 19.050 mm
C - Cup Width: 14.288 mm

Nominal size: 31.75x62x18.161 mm

The 61.999 mm catalogue outside diameter is normally expressed as a nominal 62 mm in the commercial bearing size.

An important distinction is that T = 18.161 mm is the overall bearing width, while B = 19.050 mm is the cone width. These dimensions should not be confused.

15123 Cone and 15245 Cup

The bearing consists of two separable components:

15123 - Cone
The inner ring together with the tapered rollers and cage assembly.

15245 - Cup
The separate outer ring.

This is the standard construction principle of a TIMKEN TS single-row tapered roller bearing.

The short commercial designation 15123/245 therefore represents the complete 15123/15245 bearing set.

TS - Tapered Single Design

TIMKEN identifies this bearing as:

TS - Tapered Single

A single-row tapered roller bearing is designed so that the tapered raceways and tapered rollers work as one geometric system.

This construction enables tapered roller bearings to support combined radial and axial loads. Axial load is supported in one direction by a single bearing, so bearing arrangement and adjustment are important elements of the complete application.

TIMKEN 15123/15245 Load Ratings

TIMKEN specifies the following ratings for the complete 15123/15245 set:

Dynamic Radial Rating C1: 59.9 kN
Static Radial Rating C0: 53.9 kN
Dynamic Thrust Rating Ca90: 9.31 kN
e: 0.35
K: 1.67
Y: 1.71

These values apply to the specific 15123 cone + 15245 cup combination.

31.75 mm Inch-Series Bore

The 31.750 mm bore diameter corresponds exactly to:

1.2500 in = 1 1/4 inch

This is an important identification feature because 15123/15245 belongs to the TIMKEN inch-dimension tapered roller bearing range.

The bearing should therefore be identified using the exact catalogue dimensions rather than being treated as a standard metric 32 mm bore bearing.

15123/245 vs 15123/15245

Both designations may be encountered commercially:

15123/245 - shortened designation
15123/15245 - full cone/cup designation

For precise technical identification, 15123/15245 is preferable because it explicitly identifies both components of the bearing set.

The cone number alone is not sufficient to determine the complete bearing dimensions.

Different Cups for TIMKEN 15123

The 15123 cone can be combined with different cups. This is particularly important when identifying an existing bearing.

TIMKEN catalogue combinations include:

15123/15243 - D 61.913 mm, T 18.161 mm
15123/15245 - D 61.999 mm, T 18.161 mm
15123/15244 - D 61.999 mm, T 19.749 mm
15123/15249 - D 63.500 mm, T 19.749 mm

Therefore, identifying only the 15123 marking does not guarantee that the required complete bearing is 15123/15245.

For this product, the correct combination is:

15123 + 15245

Selection and Interchangeability

When selecting a replacement, verify:

• manufacturer: TIMKEN
• complete designation: 15123/15245
• cone: 15123
• cup: 15245
• bore diameter: 31.750 mm
• outside diameter: 61.999 mm
• overall width T: 18.161 mm
• bearing type and load requirements

A bearing with a 15123 cone but a different cup should not automatically be considered interchangeable.

Technical Specification

Manufacturer: TIMKEN
Designation: 15123/245
Full Designation: 15123/15245
Type: Single-row tapered roller bearing
TIMKEN Design: TS - Tapered Single
Series: 15000
Cone: 15123
Cup: 15245
d: 31.750 mm
D: 61.999 mm
T: 18.161 mm
B: 19.050 mm
C: 14.288 mm
Dynamic Radial Rating C1: 59.9 kN
Static Radial Rating C0: 53.9 kN
Dynamic Thrust Rating Ca90: 9.31 kN
e: 0.35
K: 1.67
Y: 1.71

FAQ

What are the dimensions of TIMKEN 15123/245?

The nominal dimensions are 31.75x62x18.161 mm. TIMKEN specifies d = 31.750 mm, D = 61.999 mm and T = 18.161 mm.

Is the width 18.181 mm or 18.161 mm?

The correct TIMKEN catalogue overall width is 18.161 mm, not 18.181 mm.

What is the full designation of TIMKEN 15123/245?

The full cone/cup designation is 15123/15245.

What is the difference between 15123 and 15245?

15123 is the cone consisting of the inner ring, rollers and cage. 15245 is the separate outer ring or cup.

Is TIMKEN 15123/245 a tapered roller bearing?

Yes. It is a single-row tapered roller bearing, classified by TIMKEN as TS - Tapered Single.

What is the bore diameter of 15123/245?

The exact bore diameter is 31.750 mm, equivalent to 1.2500 inch or 1 1/4 inch.

What is the load rating of TIMKEN 15123/245?

The dynamic radial rating C1 is 59.9 kN, while the static radial rating C0 is 53.9 kN.

Can a 15123 cone be used to identify the complete bearing?

Not by itself. TIMKEN lists the 15123 cone with several different cups. For this product, the correct combination is 15123/15245.

AI OVERVIEW

15123/245 TIMKEN, full designation 15123/15245, is a TS single-row tapered roller bearing measuring 31.75x62x18.161 mm. It consists of a 15123 cone and 15245 cup. The bearing has a 31.750 mm (1.25 inch) bore, with dynamic radial rating C1 of 59.9 kN and static rating C0 of 53.9 kN.