4CR420A KOYO Four-row cylindrical roller bearings
Brand Name:KOYO
Model Number:4CR420A
Cone Part Number:K38880
Design Units:Imperial
Cage Type:Stamped Steel
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1:86700 lbf
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2:22500 lbf
d:10.3750 in
B - Cone Width:1.1250 in
R - Cone Backface To Clear Radius3:0.06 in
PDF 4CR420A

Product Details

Cone Part NumberK38880
Design UnitsImperial
Cage TypeStamped Steel
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)186700 lbf
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)222500 lbf
d10.3750 in
B - Cone Width1.1250 in
R - Cone Backface To Clear Radius30.06 in
da - Cone Frontface Backing Diameter10.83 in
db - Cone Backface Backing Diameter10.83 in
Ab - Cage-Cone Frontface Clearance0.1 in
Aa - Cage-Cone Backface Clearance0.01 in
a - Effective Center Location40.8 in
C90 - Dynamic Radial Rating (90 million revolutions)512900 lbf
C1 - Dynamic Radial Rating (1 million revolutions)649800 lbf
C0 - Static Radial Rating125000 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)78080 lbf
K - Factor81.6
G1 - Heat Generation Factor (Roller-Raceway)1028.2
G2 - Heat Generation Factor (Rib-Roller End)496.4
Cg - Geometry Factor0.168
View more

Company Profile

TIMKEN BEARING MFG.CORP
Phone 409-782-6227
View more

Related News

  • Are Bones Swiss bearings better than reds?
    Bones Bearings - A Guide of the Legends | skatedeluxe BlogNov 23, 2016 — Learn more about all the different Bones Bearings from Bones REDS to one that could be removed by skaters to allow better cleaning of the bearing. Bones Swiss have been...
  • Can brass be used as a bearing material?
    Why do engines use brass for their main (journal) bearingsOriginally Answered: Why we used brass cage in bearing? Mainly in bearings three makes of cage are mainly used: a. Pressed Steel Cage. b. Solid Brass cage Why use bushings of different...
  • How do I know if my clutch release bearing is bad?
    Symptoms of a Bad Clutch - AxleAddict - A community of carSo you can tell whether the release bearing or the pilot bearing is the source of the noise. A bad release Symptoms of a Bad Throwout Bearing & Replacement CostJump to Signs of a bad...

    • Recommended Products

    Top Products

    IKO CF10VRM Cam Follower and Track Roller - Stud Type FAG 6321-2RSR Single Row Ball Bearings AURORA CW-7T-1 Spherical Plain Bearings - Rod Ends KAWASAKI 48976-60530 Gear Pump Timken 3720 Bearing
    All Products Contact Now
    Contact Us