NTN 4T-30212 tapered roller bearings
385 Series are 384ED Cup Part Number a few brands you will find in our inventory. Find NTN 4T-30212 tapered roller bearings to see what’s in stock!
Series | 385 |
Cone Part Number | 387-S |
Cup Part Number | 384ED |
Design Units | Imperial |
Bearing Weight | 3.12 lb |
Cage Type | Stamped Steel |
Ab – Cage-Cone Frontface Clearance | 0.11 in |
d | 2.2500 in |
D | 3.9370 in |
B – Cone Width | 0.8640 in |
C – Double Cup Width | 1.5620 in |
T – Bearing Width across Cones | 1.9369 in |
R – Cone Backface To Clear Radius1 | 0.03 in |
r – Cup Frontface To Clear Radius2 | 0.03 in |
db – Cone Backface Backing Diameter | 2.52 in |
Da – Cup Frontface Backing Diameter | 3.68 in |
Aa – Cage-Cone Backface Clearance | 0.03 in |
C90 – Dynamic Radial Rating (One-Row, 90 million revolutions)3 | 6280 lbf |
C1 – Dynamic Radial Rating (Two-Row, 1 million revolutions)4 | 42200 lbf |
C90(2) – Dynamic Radial Rating (Two-Row, 90 million revolutions)5 | 10900 lbf |
Ca90 – Dynamic Thrust Rating (90 million revolutions)6 | 3810 lbf |
K – Factor7 | 1.65 |
e – ISO Factor8 | 0.35 |
Y1 – ISO Factor9 | 1.91 |
Y2 – ISO Factor10 | 2.84 |
G1 – Heat Generation Factor (Roller-Raceway)11 | 42 |
G2 – Heat Generation Factor (Rib-Roller End) | 15.7 |
Cg – Geometry Factor12 | 0.0859 |
Detailed Parameters
parameter:
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