Y-bearings and Y-bearing units
262Pages

Y-bearings and Y-bearing units

® SKF is a registered trademark of the SKF Group. © SKF Group 2013 The contents of this publication are the copyright of the publisher and may not be reproduced (even extracts) unless prior written permission is granted. Every care has been taken to ensure the accuracy of the information contained in this publication but no liability can be accepted for any loss or damage whether direct, indirect or consequential arising out of the use of the information contained herein. PUB BU/P1 13728 EN ■ June 2013 This publication supersedes catalogue 06001 EN.

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Bearings SKF is the world leader in the design, development and manufacture of high performance rolling bearings, plain bearings, bearing units and housings. Machinery maintenance Condition monitoring technologies and maintenance services from SKF can help minimize unplanned downtime, improve operational efficiency and reduce maintenance costs. Sealing solutions SKF offers standard seals and custom engineered sealing solutions to increase uptime, improve machine reliability, reduce friction and power losses, and extend lubricant life. Mechatronics SKF fly-by-wire systems for aircraft and...

This catalogue provides a representative overview of the range of Y-bearings and Y-bearing units available from SKF. The data in this catalogue is based on the latest standards and product upgrades. However, SKF reserves the right to make any changes necessary as a result of continuous improvement with respect to materials, design and manufacture. This catalogue contains all the data relevant to Y-bearings and Y-bearing units. All the data required to select a Y-bearing or Y-bearing unit respectively are listed in the product tables. Descriptions of the Y-bearing and Y-bearing unit types...

Quantity Length Area Volume Velocity, speed Mass Density Force Pressure, stress Moment Power Temperature Unit Conversion gallon gallon ounce pound short ton long ton 1 tonne 1,1023 short ton 1 short ton pound per 1 g/cm3 0,0361 lb/cub.in 1 lb/cub.in cubic inch square inch inch pound-force 1 Nm foot-pound per 1 W Celsius tC = 0,555 (tF - 32) Fahrenheit

Principles of selection and application

Conventional SKF ball bearing units are referred to as Y-bearing units. These units consist of: • an insert bearing (a single row deep groove ball bearing) with a convex sphered outside diameter • a housing, which has a correspondingly sphered but concave bore Y-bearing units can accommodate moderate initial misalignment, but normally do not permit axial displacement. They are ready-to-mount, ready-to-use units († fig. 1) and available as: • Y-bearing plummer block units • Flanged Y-bearing units • Y-bearing take-up units The housings are available in: • composite material († fig. 2) • grey...

Because of their versatility and cost effectiveness, Y-bearing units are typically found in the following applications: agricultural machinery, construction equipment, conveyor systems, textile machines and fans as well as in machines for food and beverage processing and packaging. Bearing terminology For a better understanding of the information in this catalog, see the next two pages for frequently used bearing terms and their definitions for the following products: • Y-bearings V • Y-bearing plummer block units • Flanged Y-bearing units • Y-bearing take-up units Essentially, these...

Y-bearings Insert bearings, wide inner ring bearings († fig. 5) 1 Outer ring 2 Sphered outer surface 3 Lubrication hole 4 Inner ring 5 Bore 6 Cage 7 Ball 8 Integral seal 9 Flinger 10 Eccentric locking collar 11 Grub (set) screw Inner ring with an eccentric locking collar Inner ring with two grub screws Inner ring with a tapered bore (on an adapter sleeve) Inner ring of a standard deep groove ball bearing

Fig. 6 Y-bearing units Mounted ball bearing, unit ball Y-bearing plummer (pillow) block unit fig. 6a) 1 Y-bearing plummer block housing of grey cast iron 2 Housing base 3 Housing support face 4 Cast dimple for dowel pin 5 Attachment bolt hole 6 Y-bearing 7 Grease fitting 8 Recess for end cover 9 Filling slot for Y-bearing Flanged Y-bearing unit (^ fig. 6b) 1 Square flanged housing of grey cast iron 2 Attachment bolt hole 3 Back of flanged housing with or without centring recess 4 Cast dimple for dowel pin 5 Y-bearing 6 Grease fitting 7 Filling slot for Y-bearing 8 Recess for end...