Sealmaster USRBF5000A Series Data Sheet

Performance Mounted Spherical Roller Bearings

®

Rolling Elements: Spherical Roller

45°

J

Housing: Cast Iron Four Bolt Pillow

Block

Self Alignment: +/- 2 Degrees

Lock: Adapter

H

L

A

G

Seal: Felt

Optional Seal: Double Lip Contact

Temperature: -20° to 220° F

C (MIN)

C (MAX)

B

BOLT SIZE

E

D

M

USRBF5000A Series Four-Bolt Base Pillow Blocks - Adapter Mount

Bore

Diameter

inch

2 7/16 USRBF5000A-207 44691 2 3/4 9 1/4 6 7/8 7 5/8 3 1/4 1 3/4 1 3/4 5 11/16 4 5/16 3 63/64 4 39/64

2 1/2 USRBF5000A-208 198786 69.9 235.0 174.6 193.7 82.6 44.5 44.5 144.5 109.5 101.2 117.1 8.42

2 11/16 USRBF5000A-211

2 3/4 USRBF5000A-212 47447 3 1/4 10 7/16 7 7/8 8 3/8 3 3/4 1 7/8 2 1/4 6 7/16 4 31/64 4 25/64 4 29/32 26.4

2 15/16 USRBF5000A-215 211044 82.6 265.1 200.0 212.7 95.3 47.6 57.2 163.5 113.9 111.5 124.6 12.02

Part No.

Basic

Dynamic

Rating

lb/N

A B

C

Min. Max.

Dimensions inch / mm

D E G H J L M *

Bolt
Size

1/2

5/8

Unit Wt.

lb/kg

18.5

Bearings

Mtd. Spherical

3 USRBF5000A-300

3 3/16 USRBF5000A-303

3 7/16 USRBF5000A-307

3 1/2 USRBF5000A-308

3 11/16 USRBF5000A-311

3 15/16 USRBF5000A-315

4 USRBF5000A-400

4 7/16 USRB5000A-407 111537 4 3/4 16 1/16 13 14 4 5/8 2 1/2 2 3/4 9 3/8 6 27/64 6 11/32 6 31/64

4 1/2 USRB5000A-408 496117 120.7 408.0 330.2 355.6 117.5 63.5 69.9 238.1 163.1 161.1 164.7 31.01

4 15/16 USRB5000A-415 158816 5 1/2 18 1/2 15 16 5 1/8 2 3/4 3 10 7/8 7 1/8 7 13/64 7 3/32

5 USRB5000A-500 706414 139.7 469.9 381.0 406.4 130.2 69.9 76.2 276.2 181.0 183.0 180.2 48.99

*For expansion bearings, this dimension can increase by the corresponding value in table VIII on page I-69.
One expansion unit is to be used in conjunction with one non-expansion unit for applications using an adapter lock unit
Failure to utilize one expansion and one non-expansion unit is likely to result in reduced bearing performance.

72640

323103

96050

427230

3 3/4

95.313330.2

4 1/4

15 1/4

108.0

387.411279.413330.2

9 1/4

235.0

10 3/4

273.1

3 7/8

98.4250.8

4 1/2

114.3

2 1/4

57.2

2 1/4

57.2

2 5/8

66.7

7 1/2

190.5

8 9/16

217.5

5 35/64

140.9

5 15/16

150.8

5 15/32

138.9

5 13/16

147.6

5 11/16

144.5

6 13/64

157.6

3/4

3/4

3/4

7/8

41.0

18.63

58.2

26.47

68.2

107.8

Bearing Selection

Page H-3

Nomenclature Aid

Page H-6

Features & Benets

Page H-7

Technical Engineering

Page I-47

H-12