Matched Bearing Assemblies
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r r To clear 2.0 max. fillet radius. R To clear 0.3 max. fillet radius. r TIMKEN® METRIC TAPERED ROLLER BEARINGS MATCHED BEARING ASSEMBLIES

TIMKEN® METRIC TAPERED ROLLER BEARINGS - MATCHED BEARING ASSEMBLIES INDEX r r To clear 2.0 max. fillet radius. TIMKEN® METRIC TAPERED ROLLER BEARINGS - MATCHED BEARING ASSEMBLIES R To clear 0.3 max. fillet radi

TIMKEN® METRIC TAPERED ROLLER BEARINGS - MATCHED BEARING ASSEMBLIES INTRODUCTION TIMKEN MATCHED BEARING ASSEMBLIES Matched bearing assemblies are used in applications: • hat require higher load carrying capacity than can be T achieved with a single-row tapered roller bearing; or • Where the shaft must be located axially in both directions with a specific axial clearance or preload. The standard range of assemblies included in the product tables are specified with a market standard axial clearance value that is referred to as Bench End Play (BEP). Application specific axial clearance values...

TIMKEN® METRIC TAPERED ROLLER BEARINGS - MATCHED BEARING ASSEMBLIES MOUNTING ARRANGEMENTS DIRECT MOUNTING MOUNTING ARANGEMENTS: Timken can supply standard matched bearing assemblies in both the direct (DF) and indirect (DB) mounting arrangements to meet the application needs. Both types can accommodate axial loads in both directions. This arrangement consists of: This arrangement consists of: • Two single-row bearings, with abutting back-facing inner-rings • An outer-ring spacer with lubricating holes • An outer-ring spacer with lubricating holes • A solid inner-ring spacer TIMKEN® METRIC...

TIMKEN® METRIC TAPERED ROLLER BEARINGS - MATCHED BEARING ASSEMBLIES PART NUMBERING SYSTEM DIRECT MOUNTING BEARING AXIAL CLEARANCE The internal axial clearance is factory set for each assembly. The indicated axial clearance values are valid for general application conditions. The mean values (μm) are shown in the bearing table and are manufactured to a tolerance +/- 25 μm. For example the matched bearing assembly 30228 DF will have a factory set axial clearance with a mean of 270 μm, The actual clearance will therefore lie in the range of 245 μm to 295 μm. When a non-standard internal axial...

TIMKEN® METRIC TAPERED ROLLER BEARINGS - MATCHED BEARING ASSEMBLIES FITTING PRACTICE DIRECT MOUNTINGTABLES INNER RING – Industrial Equipment Classes K and N (Metric) Inner Ring Bore Ground Seat Standard axial clearances shown in bearing table are appropriate for light duty fitting practice. A special axial clearance value may be needed for applications using Timken preferred, or special fitting practices. Special fitting practices may include applications with tubular shafts, with shaft/housing made of non-ferrous materials, with rotating housing/stationary shaft, with unground bearing...

TIMKEN® METRIC TAPERED ROLLER BEARINGS - MATCHED BEARING ASSEMBLIES FITTING PRACTICE TABLES DIRECT MOUNTING OUTER RING – Industrial Equipment Classes K and N (Metric) Outer Ring O.D. Range These charts are guidelines for specifying shaft and housing fits related to particular operating conditions. Deviation from nominal (maximum) bearing O.D. and resultant fit. Stationary Outer Ring Clamped Adjustable Outer Ring Resultant Seat Fit Deviation TIMKEN® METRIC TAPERED ROLLER BEARINGS - MATCHED BEARING ASSEMBLIES

TIMKEN® METRIC TAPERED ROLLER BEARINGS - MATCHED BEARING ASSEMBLIES DIRECT MOUNTING Bearing Dimensions Load Ratings Part Number TIMKEN® METRIC TAPERED ROLLER BEARINGS

TIMKEN® METRIC TAPERED ROLLER BEARINGS - MATCHED BEARING ASSEMBLIES DIRECT MOUNTING Shaft Dimensions Max. Shaft Backing Fillet Radius Shoulder Dia. (2) R db Housing Dimensions Max. housing Max. Backing Fillet Radius Shoulder Dia. (2) r Da Bearing Assembly Weight Based on 1 x 106 revolutions L10 life, for the ISO life-calculation method. C1(2) is the double-row radial value. (2) These maximum fillet radii will be cleared by the bearing corners. Additional series may exist. If you do not see the assembly you are looking for, consult your Timken engineer for more information. TIMKEN® METRIC...

TIMKEN® METRIC TAPERED ROLLER BEARINGS - MATCHED BEARING ASSEMBLIES DIRECT MOUNTING Bearing Dimensions Load Ratings Part Number TIMKEN® METRIC TAPERED ROLLER BEARINGS - MATCHED BEARING ASSEMBLIES

TIMKEN® METRIC TAPERED ROLLER BEARINGS - MATCHED BEARING ASSEMBLIES DIRECT MOUNTING Shaft Dimensions Max. Shaft Backing Fillet Radius Shoulder Dia. (2) R db Housing Dimensions Max. housing Max. Backing Fillet Radius Shoulder Dia. (2) r Da Bearing Assembly Weight Based on 1 x 106 revolutions L10 life, for the ISO life-calculation method. C1(2) is the double-row radial value. (2) These maximum fillet radii will be cleared by the bearing corners. Additional series may exist. If you do not see the assembly you are looking for, consult your Timken engineer for more information. TIMKEN® METRIC...

TIMKEN® METRIC TAPERED ROLLER BEARINGS - MATCHED BEARING ASSEMBLIES DIRECT MOUNTING Bearing Dimensions Load Ratings Part Number TIMKEN® METRIC TAPERED ROLLER BEARINGS - MATCHED BEARING ASSEMBLIES

TIMKEN® METRIC TAPERED ROLLER BEARINGS - MATCHED BEARING ASSEMBLIES DIRECT MOUNTING Shaft Dimensions Max. Shaft Backing Fillet Radius Shoulder Dia. (2) R db Housing Dimensions Max. housing Max. Backing Fillet Radius Shoulder Dia. (2) r Da Bearing Assembly Weight Based on 1 x 106 revolutions L10 life, for the ISO life-calculation method. C1(2) is the double-row radial value. (2) These maximum fillet radii will be cleared by the bearing corners. Additional series may exist. If you do not see the assembly you are looking for, consult your Timken engineer for more information. TIMKEN® METRIC...

TIMKEN® METRIC TAPERED ROLLER BEARINGS - MATCHED BEARING ASSEMBLIES INDIRECT MOUNTING Bearing Dimensions Part Number Load Ratings Factors e TIMKEN® METRIC TAPERED ROLLER BEARINGS - MATCHED BEARING ASSEMBLIES

TIMKEN® METRIC TAPERED ROLLER BEARINGS - MATCHED BEARING ASSEMBLIES INDIRECT MOUNTING Shaft Dimensions Housing Dimensions Bearing Assembly Weight Max. Shaft Fillet Radius Max. housing Fillet Radius (1) Based on 1 x 106 revolutions L10 life, for the ISO life-calculation method. C1(2) is the double-row radial value. (2) These maximum fillet radii will be cleared by the bearing corners. Additional series may exist. If you do not see the assembly you are looking for, consult your Timken engineer for more information. TIMKEN® METRIC TAPERED ROLLER BEARINGS - MATCHED BEARING ASSEMBLIES