APTM Bearings for Industrial Applications
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APTM Bearings for Industrial Applications

2 APTM BEARINGS FOR INDUSTRIAL APPLICATIONS

INTRODUCTION Development and Advantages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Bearing Reconditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Description of Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Basic Bearing Assembly Dimensions and Ratings . . . . . . . . . . . . . . . . 9 Overall Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 HOW TO IDENTIFY ASSEMBLY NUMBERS AND PART NUMBERS Bearing Assembly Numbers . . . ....

4 APTM BEARINGS FOR INDUSTRIAL APPLICATIONS

Development and Advantages . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Bearing Reconditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Description of Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Basic Bearing Assembly Dimensions and Ratings . . . . . . . . . 9 Overall Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

INTRODUCTION When Timken introduced its revolutionary APTM (All-Purpose) railroad bearings in 1954, it was a railroad industry milestone. Decades later, Timken is a leader in the friction management and power transmission industries and continues to lead in advancing bearing technology through continuous innovation and development. In addition to railroad applications, AP bearings are successfully used in many types of industrial applications. This can be attributed to many factors including the bearing's high load carrying capacity and its adaptability to a wide variety of...

INTRODUCTION TIMKEN® AP BEARING ASSEMBLY DESCRIPTION OF PARTS The narrow adapter shown in Fig. 1 can be used in many applications. Another type of mounting utilizes a full bore housing (see page 21). While this type of housing is currently unavailable through Timken, most bearing distributors provide a selection from other manufactuerers. The bearing assembly is pressed on the axle as a completely sealed unit. The axle end cap, cap screws and locking plate Vent Narrow Adapter can be applied to the axle as a unit. When the axle end cap, as shown in Fig. 1 is used, the locking plate provided...

1,1 Cone bore tolerance + 0.025 - 0.000 mm (+ .0010 in. - .0000 in.) 121 Cup O.D. tolerance + 0.127 - 0.000 mm (+ .0050 in. - .0000 in.) (3) Cup H337816XD O.D. tolerance is +0.127 + 0.076 mm (+ .0050 in. + .0030 in.) (4) K Factor is defined as the tapered roller bearing radial to axial dynamic capacity ratio. NOTE: Special cup O.D. tolerance +0.102 + 0.076 mm (+ .0040 in. + .0030 in.) also available.

With Shroud Without Shroud Basic Bearing Assembly Backing Ring (1) Assemblies ) Backing ring assemblies and/or backing spacer may be used on either side of the bearing. On Classes B, C, and D the lubricant fitting extends beyond the axle end cap. Dimensions given include the lubricant fitting. APTM BEARINGS FOR INDUSTRIAL APPLICATIONS

BERS HOW TO IDENTIFY ASSEMBLY NUMBERS AND PART NUMBERS Bearing Assembly Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Standard Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

HOW TO IDENTIFY ASSEMBLY NUMBERS AND PART NUMBERS HOW TO IDENTIFY ASSEMBLY NUMBERS AND PART NUMBERS Vent Fitting BEARING ASSEMBLY NUMBERS In order to facilitate the identity of groups of parts, a “bearing assembly number” system is used. AP bearings are each assigned a five digit numeric code that follows the cone part number to describe the individual component parts, prelubrication, performance codes, and internal clearance of the pre-set assembly. In some cases the code may be alphanumeric, although the first digit is always “9”. For new applications, an assembly number is assigned on...

Seal Assembly Cup Cone Spacer Cone & Roller Assembly Lube Fitting With Shroud Without Shroud Basic Bearing Assembly Backing Ring Assemblies Backing Spacer 14 APTM BEARINGS FOR INDUSTRIAL APPLICATIONS

MOUNTING DESIGNS Typical Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Crane Bridge and Trolley Axles . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Moveable Stadium Roof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Table Rolls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Continuous Casting Machine Guide Rollers . . . . . . . . . . . . . . 22 Elevator Sheaves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Ingot Cars . . . . . . . . . . ....

MOUNTING DESIGNS TYPICAL APPLICATIONS Listed below are some of the various applications on which AP bearings are presently being used. Photographs and/or line drawings of some of these designs are shown on the following pages. • Apron Feeders • Auto Shredders • Band Saws • Barking Drums - Thrust Rollers • Billet Ejectors • Bucket Unloaders • Calender Rolls • Cam Rollers • Cars - Billet Grinder Cars - Cable Cars - Cane Cars - Charging Box Cars - Coke Guide Cars - Coke Quench Cars - Coke Screening Cars - Furnace Cars - Furnace Heat Shield Cars - Hot Metal Cars - Ingot Cars - Ingot Transfer...

MOUNTING DESIGNS CRANE BRIDGE AND TROLLEY AXLE This illustrates a typical AP bearing mounting for crane bridge and trolley axle using recessed end cap. This clamped wheel design is shown on a drive axle. The idler axle design is similar except both bearings are clamped in the same manner as the left-hand assembly shown in Fig. 3. Fig. 3 Cross section of AP bearing on a drive axle Typical full bore housing designs for crane wheel applications APTM BEARINGS FOR INDUSTRIAL APPLICATIONS

MOUNTING DESIGNS Crane Bridge and Trolley Axle The crane bridge and trolley axle photos below illustrate an example of a standard and recessed end cap. Fig. 6 Trolley utilizing AP bearings with recessed end cap for wheel and drum drive APTM BEARINGS FOR INDUSTRIAL APPLICATIONS