Specifications

• Bore Diameter
  3.4375 in
• Product Type
  Flange-Mount Roller Bearing Units
• Mounting Type
  4-Bolt Flange
• Housing Material
  Ductile Iron
• Bolt Circle Diameter
  9.9000 in;251.46 mm
• Bolt Center To Center Length
  7.0000 in, 177.80 mm
• Locking Device
  Set Screw
• Expansion Type
  Non-Expansion Bearing (Fixed)
• Housing Construction
  Split
• Type Of Bearing
  Tapered Roller
• Bearing Type
  Tapered Roller
• Seal Type
  XTS Triple-Lip Contact Seal
• Insert Material
  Steel
• Grease Type
  MobilGrease XHP222
• Lubrication
  Grease
• Length Through Bore
  5.0000 in, 127 mm
• Lubrication Type
  Grease
• Bolt Size
  0.7500 in
• Bore Length
  5.0000 in
• Series
  F4B-EXL
• Flange Mounting Type
  4-Bolt Flange
• Manufacturer Catalog Number
  138591
• Weight
  61 lbs
• Dynamic Load Capacity
  17750 lbf
• Housing Type
  4-Bolt Flange
• Max Rpm
  1640 rpm
• Static Load Capacity
  108600 lbf
• Description
  138591 F4B-EXL-307R-MOD (TYPE-K CONE)
• Number Of Mounting Holes
  4
• Maximum Speed
  1640 rpm
• Long Description
  The F4B-EXL-307R-MOD (TYPE-K CONE) is a tapered roller bearing unit, 4-bolt flange type with a 3-7/16 in bore diameter, non-expansion (fixed) 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-EXL series. The unit weighs 61.000 lbs.