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742 Inch Tapered Roller Bearings
742 Inch Tapered Roller Bearings
742 Inch Tapered Roller Bearings
Diagram of DSBR Inch Tapered Roller Bearings
Diagram of DSBR Inch Tapered Roller Bearings

749/742 Inch Tapered Roller Bearings

The DSBR 749/742 tapered roller bearing is designed for high-load applications that require exceptional strength and stability. Manufactured from premium-grade bearing steel and precision-ground for accuracy, this inch-series bearing ensures low friction, extended service life, and smooth operation. It is commonly used in trucks, trailers, agricultural equipment, and industrial gearboxes. The bearing’s cone and cup separable design simplifies installation and inspection. DSBR’s advanced manufacturing technology and ISO-certified quality management guarantee consistent performance, making this product a trusted solution for both OEM and aftermarket customers.

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Technical Specification Technical Specification

Technical Specification of 749/742 Inch Tapered Roller Bearings

Specifications
Series745
Cone Part Number749
Cup Part Number742
Design UnitInch
Cage MaterialStamped Steel
Dimensions
d - Bore3.3475 in
85.027 mm
D - Cup Outer Diameter5.9090 in
150.089 mm
B - Cone Width1.8375 in
46.673 mm
C - Cup Width1.4375 in
36.513 mm
T - Bearing Width1.7500 in
44.450 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 Diameter3.74 in
95 mm
db - Cone Backface Backing Diameter3.98 in
101 mm
Da - Cup Frontface Backing Diameter5.63 in
142.00 mm
Db - Cup Backface Backing Diameter5.28 in
134.11 mm
Ab - Cage-Cone Frontface Clearance0.08 in
2 mm
Aa - Cage-Cone Backface Clearance0.05 in
1.3 mm
a - Effective Center Location3-0.47 in
-11.9 mm
Basic Load Ratings
C90 - Dynamic Radial Rating (90 million revolutions)421900 lbf
97600 N
C1 - Dynamic Radial Rating (1 million revolutions)584700 lbf
377000 N
C0 - Static Radial Rating93800 lbf
417000 N
Ca90- Dynamic Thrust Rating (90 million revolutions)612200 lbf
54400 N
Factors
K - Factor71.8
e - ISO Factor80.33
Y - ISO Factor91.84
G1 - Heat Generation Factor (Roller-Raceway)159.6
G2 - Heat Generation Factor (Rib-Roller End)26.3
Cg - Geometry Factor100.0898


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