TIMKEN BALL BEARING HOUSED UNITS ®

TIMKEN® BALL BEARING HOUSED UNITS DESIGNED FOR OPTIMIZED PERFORMANCE For more than 110 years, Timken innovations continue to keep the world in motion, including the invention of the wide inner ring bearing and the ball bearing housed unit. We continue that innovation by applying our extensive engineering knowledge of bearings, metallurgy, seals and end-user applications to deliver optimized performance from our housed unit product line. Timken ball bearing housed units help improve efficiencies through: INCREASED EQUIPMENT UPTIME AND REDUCED MAINTENANCE COST • Bearings with spherical outer rings...

HOUSING STYLES Timken offers you the full range of standard series ball bearing housed units with a popular set screw locking mechanism in metric and imperial sizes: UCP PILLOW BLOCK UNITS 12 mm to 90 mm ( 1 ⁄ 2 in. to 3 1 ⁄ 2 in.) UCFL TWO-BOLT FLANGED UNITS 12 mm to 90 mm ( 1 ⁄ 2 in. to 3 1 ⁄ 2 in.) UCFC PILOTED ROUND FLANGED UNITS 12 mm to 90 mm ( 1 ⁄ 2 in. to 3 1 ⁄ 2 in.) UCF FOUR-BOLT FLANGED UNITS 12 mm to 90 mm ( 1⁄ 2 in. to 3 1 ⁄ 2 in.) UC WIDE INNER RING BALL BEARINGS 12 mm to 90 mm

Bearing Insert Code CONFIGURATIONS TO MEET YOUR NEEDS BALL HOUSED UNITS Standard series – wide inner ring, set screw locking mechanism HOUSING TYPES Pillow block, two-bolt flange, four-bolt flange, piloted round flange and take-up Bore Diameter Code METRIC BORE SIZES 12 mm – 90 mm INCH BORE SIZES ½ in. – 3½ in. Series Code BEARING INSERT CODE HOUSING CODE UC Cylindrical bore, spherical outer diameter, set screw locking mechanism P Pillow block unit 2 Standard industrial series BORE DIAMETER CODE METRIC SERIES CODE F Four-bolt flanged unit Example: UCF201 = 12 mm bore (Four-bolt flanged unit)...

FEATURES Precision formed flinger Engineered balls and cage Provides the first level of protection against contamination. Steel cage provides effective ball guidance and high temperature service capability. High-performance seal Wide inner ring Bonded nitrile rubber seal with an engineered interface to the inner ring. Improved shaft support over narrow rings, improving bearing life and reducing misalignment. Hardened and ground seal land Helps protect against abrasive wear, extending seal life. 120-degree angle minimizes inner ring distortion for smoother-running bearing. Outer ring with spherical...

High-performance seal Engineered balls and cage Outer ring with spherical outside diameter Lubrication groove Wide inner ring Hexagon socket set screw Housing (pillow block)

Ball bearing housed units are available in a wide variety of sizes and housing styles to accommodate a complete range of operating conditions. These units generally have cast-iron housings and are designed for mounting on straight shafts with a slip fit. The set screw locking mechanism provides ease in mounting. 1. Ensure that the shaft is clean, free from burrs, straight and of proper diameter. The bearing should not be mounted on a worn section of the shaft. Using shafts with hardness greater than HRC 45 will reduce effectiveness of locking devices. See table 2 on page 9 for suggested shaft...

TECHNICAL DATA The following tables provide useful installation details related to shaft tolerance and torque for set screws and bolts. SUGGESTED SHAFT TOLERANCE (1) TABLE 2 SHAFT SIZE SUGGESTED BOLT MOUNTING TORQUE SHAFT TOLERANCE BOLT SIZE TIGHTENING TORQUE (1) These are for normal service; for heavy loads, high speeds or vertical shaft applications, consult your equipment manufacturer or your local Timken representative. SUGGESTED SET SCREW TIGHTENING TORQUE TABLE 3 TIGHTENING TORQUE

CAST-IRON PILLOW BLOCK UNITS UCP INDUSTRIAL SERIES • UCP pillow blocks are suggested for industrial applications where normal loads are encountered. • Compact, one-piece housing with two-bolt mounting can be installed in any position and makes bearing replacement easy. • These units use wide inner ring ball bearings with self-aligning spherical outside diameters that compensate for shaft misalignment. • Bearing prelubricated and ready for immediate installation. • Grease fitting supplied for relubrication. • The bonded seal design is well-suited for applications involving wet or dirty environments....

Continued from previous page. Basic Load Ratings Pillow block Bearing Designation Designation Dynamic Static Bolt Size

CAST-IRON FOUR-BOLT FLANGED UNITS UCF INDUSTRIAL SERIES • UCF four-bolt flanged units are suggested for industrial applications where normal loads are encountered. • Each unit comes assembled and ready for mounting, using bolts through the flange. • These units use wide inner ring ball bearings with self-aligning spherical outside diameters that compensate for shaft misalignment. • Bolt-hole spacing dimensions and shaft center location are interchangeable with competitive units. • Timken UCF-series set screw flanged units feature the Timken UC bearing insert. • Bearing prelubricated and ready...

Continued from previous page. Bolt Size Basic Load Ratings Bearing Four-Bolt Designation Dynamic Static Flange Designation Cr C0r kN lbs.

CAST-IRON TWO-BOLT FLANGED UNITS UCFL INDUSTRIAL SERIES • UCFL two-bolt flanged units are suggested for industrial applications where normal loads are encountered. • This series is primarily designed for applications where the mounting area is restricted. • Each unit comes assembled and ready for mounting, using bolts through the flange. • These units use wide inner ring ball bearings with self-aligning spherical outside diameters that compensate for shaft misalignment. • Bolt-hole spacing dimensions and shaft center location are interchangeable with competitive units. • Timken UCFL-series set...

Continued from previous page. Bolt Size Basic Load Ratings Bearing Two-Bolt Designation Dynamic Static Flange Designation Cr C0r