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3720 Inch Tapered Roller Bearings
3720 Inch Tapered Roller Bearings
3720 Inch Tapered Roller Bearings
Diagram of DSBR Inch Tapered Roller Bearings
Diagram of DSBR Inch Tapered Roller Bearings

3780/3720 Inch Tapered Roller Bearings

The DSBR 3780/3720 tapered roller bearing is a versatile and durable inch-series model built to support both radial and axial loads in high-performance automotive and industrial applications. Constructed from premium bearing steel, it is heat-treated and precision-ground for exceptional strength, reduced wear, and longer service intervals. Its separable cone and cup design allows for easier assembly, disassembly, and maintenance. This bearing is widely used in gearboxes, wheel hubs, and agricultural equipment. Backed by DSBR’s advanced production capabilities and rigorous quality control, the 3780/3720 provides unmatched consistency, reliability, and excellent value for OEM and aftermarket supply chains worldwide.

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Technical Specification Technical Specification

Technical Specification of 3780/3720 Inch Tapered Roller Bearings

Specifications
Series3700
Cone Part Number3780
Cup Part Number3720
Design UnitInch
Cage MaterialStamped Steel
Related Assembly Number(s)3780-90054
Dimensions
d - Bore2 in
50.80 mm
D - Cup Outer Diameter3.6718 in
93.264 mm
B - Cone Width1.1930 in
30.302 mm
C - Cup Width0.9375 in
23.813 mm
T - Bearing Width1.1875 in
30.163 mm
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius10.14 in
3.600 mm
r - Cup Backface "To Clear" Radius20.130 in
3.30 mm
da - Cone Frontface Backing Diameter2.28 in
58 mm
db - Cone Backface Backing Diameter2.52 in
64 mm
Da - Cup Frontface Backing Diameter3.50 in
87.90 mm
Db - Cup Backface Backing Diameter3.23 in
82.04 mm
Ab - Cage-Cone Frontface Clearance0.06 in
1.5 mm
Aa - Cage-Cone Backface Clearance0.06 in
1.5 mm
a - Effective Center Location3-0.32 in
-8.1 mm
Basic Load Ratings
C90 - Dynamic Radial Rating (90 million revolutions)47120 lbf
31700 N
C1 - Dynamic Radial Rating (1 million revolutions)527500 lbf
122000 N
C0 - Static Radial Rating34300 lbf
153000 N
Ca90- Dynamic Thrust Rating (90 million revolutions)64120 lbf
18300 N
Factors
K - Factor71.73
e - ISO Factor80.34
Y - ISO Factor91.77
G1 - Heat Generation Factor (Roller-Raceway)49.9
G2 - Heat Generation Factor (Rib-Roller End)14.5
Cg - Geometry Factor100.0903


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