Specifications

• Bore Diameter
  3-1/2 in
• Product Type
  Flange-Mount Roller Bearing Units
• Mounting Type
  4-Bolt Flange
• Housing Material
  Ductile Iron
• Locking Device
  Set Screw
• Expansion Type
  Expansion Bearing (Floating)
• Housing Construction
  Split
• Country of Origin
  US
• Type Of Bearing
  Tapered Roller
• Bearing Type
  K Pillow Block
• Seal Type
  Triple-Lip Contact Seal
• Bolt Hole Diameter
  0.8750 in
• Insert Material
  Steel
• Grease Type
  MobilGrease XHP222
• Lubrication
  Grease
• Radial Dynamic Load Capacity
  17750 lbf
• Radial Static Load Capacity
  108600 lbf
• Bolt Size
  0.8750 in
• Bore Length
  4.5 in
• Series
  F4B-K
• Manufacturer Catalog Number
  023253
• Dynamic Load Capacity
  17750 lbf
• Housing Type
  Four-Bolt Flange
• Max Rpm
  1640 rpm
• Static Load Capacity
  108600 lbf
• Description
  023253 F4BK308RE EXP FLG BRG
• Max Bolt Hole Spacing
  8.3120 in
• Min Bolt Hole Spacing
  8.3120 in
• Maximum Speed
  1640 rpm
• Shaft Attachment
  Setscrew
• Material
  023253
• Sensor Ready
  No
• Long Description
  The F4B-K-308RE is a tapered roller expansion bearing unit, 4-bolt flange type with a 3-1/2 in bore diameter, floating bearing. It features a ductile iron housing with a 4-bolt flange mounting, set screw locking device, and XTS triple-lip contact seal in the F4B-K series. It weighs 45.000 lbs.