2025 Bower heavy-duty taper roller bearing interchange catalog with Bower SET numbers cross-referenced to Timken, SKF, General/Hyatt, STEMCO, FM, and Con-Met part families plus application notes and legend footnotes.
2025
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2025-Bower-Bearings-Taper-Roller-Bearing-Interchange.pdf
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Page 1 specification row
NTN BOWER pinion bearings are made to the OEM axle manufacturer specification for easy pinion spacer selection. Used in Class 4-8 trucks. Benefits include quick, easy, and consistent pinion preload setting and reduced pinion assembly time.
Page 1 specification row
NTN BOWER pinion bearings are made to the OEM axle manufacturer specification for easy pinion spacer selection. Used in Class 4-8 trucks. Benefits include quick, easy, and consistent pinion preload setting and reduced pinion assembly time.
Page 1 specification row
NTN BOWER pinion bearings are made to the OEM axle manufacturer specification for easy pinion spacer selection. Used in Class 4-8 trucks. Benefits include quick, easy, and consistent pinion preload setting and reduced pinion assembly time.
Page 1 specification row
NTN BOWER pinion bearings are made to the OEM axle manufacturer specification for easy pinion spacer selection. Used in Class 4-8 trucks. Benefits include quick, easy, and consistent pinion preload setting and reduced pinion assembly time.
Page 1 specification row
NTN BOWER pinion bearings are made to the OEM axle manufacturer specification for easy pinion spacer selection. Used in Class 4-8 trucks. Benefits include quick, easy, and consistent pinion preload setting and reduced pinion assembly time.
Page 1 specification row
NTN BOWER pinion bearings are made to the OEM axle manufacturer specification for easy pinion spacer selection. Used in Class 4-8 trucks. Benefits include quick, easy, and consistent pinion preload setting and reduced pinion assembly time.
WHEN IT COMES TO OE QUALITY AND RUGGED RELIABILITY,
THE POWER OF BOWER IS SECOND TO NONE.
Bower Heavy Duty Bearings by NTN OE and aftermarket bearings are recognized as among the very best in the industry,
with a list of quality product innovations and firsts that is long, distinguished and growing. Bower products are shipped
from Bower plants located in Macomb, Illinois and Hamilton, Alabama, and enjoy a reputation for reliability and high
Taper Roller Bearing
performance in the no-nonsense world of big rigs and other hard working vehicles.
BOWER FEATURES & BENEFITS
CROWNED PRECISION ROLLERS &
RACEWAYS
FULL LINE OF PRODUCTS
• Bower carries a full line of bearings for Class 4-8
trucks
Interchange
• Ensure low friction, even load distribution, and
extended bearing life
RELIABLE DELIVERY - WHEN YOU NEED IT MEETS OR EXCEEDS ISO & ABMA
STANDARDS
TIGHTER TOLERANCES FOR EASY PINION SPACER SELECTION
NTN BOWER pinion bearings are made to the OEM axle manufacturer speci-
Number of Possible
fication. This includes a width tolerance (front face stand height) that is over
Spacer Sizes
70% tighter than standard bearing product.
THE POWER OF BOWER
What does that mean for you?
NTN Industry
• Quick, easy, and consistent pinion preload setting BOWER Standard
• Use the nominal spacer more often
• Reduced pinion spacer Inventory – cost savings
ER
BOW
• Reduced pinion assembly time – cost savings
NTN
Industry
Standard
* Applies ONLY to SET427, SET428, SET429, SET430, SET431, and SET432.
• IT’S THE POWER OF A GLOBAL COMPANY WITH LOCAL MANUFACTURING.
• IT’S THE POWER OF A CENTURY OF CONTINUOUS IMPROVEMENT AND INNOVATION.
• IT’S THE POWER OF OE QUALITY.
OPTIMIZED CROWNING FOR INCREASED DIFFERENTIAL SIDE BEARING LIFE Distributors, fleet managers and shop owners who expect premium results depend on Bower heavy duty bearings by NTN
Stress Levels – and you can too.
The axle OEM understands that differential side bearings can lead a hard
HIGH LOW
life. Heavy loads can cause the differential carrier and bearing cap assembly
to deflect, resulting in excess stress on the bearing raceway that will lead to Discover the POWER OF BOWER. Call 1-800-686-8670 today.
NTN Bearing
reduced bearing life. That is why the axle OEM worked with NTN BOWER to Standard Bearing Optimized Crowning POWEROFBOWER.com
design these side bearings with special roller and raceway crowning features
to extend bearing life.
What does that mean for you?
• Extended bearing life
High Edge Stress, Greater Contact Area,
Premature Failure Point Reduced Stress
25BOWINTCH