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25520 Inch Tapered Roller Bearings
25520 Inch Tapered Roller Bearings
25520 Inch Tapered Roller Bearings
Diagram of DSBR Inch Tapered Roller Bearings
Diagram of DSBR Inch Tapered Roller Bearings

25581/25520 Inch Tapered Roller Bearings

The 25581/25520 tapered roller bearing is a durable inch-series bearing widely used in trucks, agricultural equipment, and industrial applications. Its robust design supports heavy axial and radial loads, ensuring reliability under tough working conditions. Made from high-quality steel with advanced heat treatment, this bearing provides excellent wear resistance and fatigue life. The separable cone and cup simplify maintenance and reduce downtime. With DSBR’s strict quality assurance, this bearing delivers consistent precision and reliability, making it suitable for both OEM installations and aftermarket replacements worldwide.


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Technical Specification Technical Specification

Technical Specification of 25581/25520 Inch Tapered Roller Bearings

Specifications
Series25500
Cone Part Number25581
Cup Part Number25520
Design UnitInch
Cage MaterialStamped Steel
Dimensions
d - Bore1 3/4 in
44.45 mm
D - Cup Outer Diameter3.2650 in
82.931 mm
B - Cone Width1.0000 in
25.400 mm
C - Cup Width0.7500 in
19.050 mm
T - Bearing Width0.9375 in
23.813 mm
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius10.02 in
0.50 mm
r - Cup Backface "To Clear" Radius20.030 in0.76 mm
da - Cone Frontface Backing Diameter1.97 in
50 mm
db - Cone Backface Backing Diameter2.01 in
51 mm
Da - Cup Frontface Backing Diameter3.05 in
77.00 mm
Db - Cup Backface Backing Diameter2.91 in
73.91 mm
Ab - Cage-Cone Frontface Clearance0.06 in
1.5 mm
Aa - Cage-Cone Backface Clearance0.01 in
0.3 mm
a - Effective Center Location3-0.25 in
-6.4 mm
Basic Load Ratings
C90 - Dynamic Radial Rating (90 million revolutions)45270 lbf
23500 N
C1 - Dynamic Radial Rating (1 million revolutions)520300 lbf
90500 N
C0 - Static Radial Rating24900 lbf
111000 N
Ca90- Dynamic Thrust Rating (90 million revolutions)63020 lbf
13500 N
Factors
K - Factor71.74
e - ISO Factor80.33
Y - ISO Factor91.79
G1 - Heat Generation Factor (Roller-Raceway)35.2
G2 - Heat Generation Factor (Rib-Roller End)14.3
Cg - Geometry Factor100.0801


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