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382A Inch Tapered Roller Bearings
382A Inch Tapered Roller Bearings
382A Inch Tapered Roller Bearings
Diagram of DSBR Inch Tapered Roller Bearings
Diagram of DSBR Inch Tapered Roller Bearings

387A/382A Inch Tapered Roller Bearings

The DSBR 387A/382A tapered roller bearing is an inch-series bearing ideal for automotive, truck, and heavy-duty industrial machinery applications. With superior heat-treated bearing steel construction, it provides exceptional strength and resistance to wear, even in demanding environments. Its precision-ground raceways minimize friction and enhance operational efficiency. The bearing’s separable cup and cone design allows for easier handling, assembly, and replacement, making it a cost-effective solution for OEMs and distributors. Supported by DSBR’s advanced manufacturing technology, global logistics network, and competitive pricing, this model ensures exceptional reliability for both original equipment and aftermarket applications.


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Technical Specification Technical Specification

Technical Specification of 387A/382A Inch Tapered Roller Bearings

Specifications
Series385
Cone Part Number387A
Cup Part Number382A
Design UnitInch
Cage MaterialStamped Steel
Related Assembly Number(s)387A-90409
Dimensions
d - Bore2 1/4 in
57.15 mm
D - Cup Outer Diameter3.8125 in
96.838 mm
B - Cone Width0.8640 in
21.946 mm
C - Cup Width0.6250 in
15.875 mm
T - Bearing Width0.8268 in
21.001 mm
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius10.14 in
3.600 mm
r - Cup Backface "To Clear" Radius20.030 in
0.76 mm
da - Cone Frontface Backing Diameter2.48 in
63 mm
db - Cone Backface Backing Diameter2.76 in
70 mm
Da - Cup Frontface Backing Diameter3.66 in
92.96 mm
Db - Cup Backface Backing Diameter3.50 in
88.90 mm
Ab - Cage-Cone Frontface Clearance0.11 in
2.8 mm
Aa - Cage-Cone Backface Clearance0.03 in
0.8 mm
a - Effective Center Location3-0.12 in
-3 mm
Basic Load Ratings
C90 - Dynamic Radial Rating (90 million revolutions)46280 lbf
28000 N
C1 - Dynamic Radial Rating (1 million revolutions)524200 lbf
108000 N
C0 - Static Radial Rating24100 lbf
107000 N
Ca90- Dynamic Thrust Rating (90 million revolutions)63810 lbf
16900 N
Factors
K - Factor71.65
e - ISO Factor80.35
Y - ISO Factor91.69
G1 - Heat Generation Factor (Roller-Raceway)42
G2 - Heat Generation Factor (Rib-Roller End)15.7
Cg - Geometry Factor100.0859


Contact DSBR for More Information
Contact DSBR for More Information
2010
SINCE
9
PATENTS
120
EXPERT WORKERS
40
EXPORT COUNTRIES
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