Bower A34 Tapered Roller Bearing - Set LM12748/LM12710

The Bower A34 is a tapered roller bearing set consisting of a cone (LM12748) and cup (LM12710) assembly designed for heavy-duty applications requiring superior load capacity. This precision-engineered bearing set is manufactured by Bower, a brand under NTN, known for producing millions of high-quality tapered roller bearings annually for demanding industries.

Key Specifications:

• Inner Diameter: 0.8437 inches (21.43mm)
• Outer Diameter: 1.781 inches (45.237mm)
• Width: 0.610 inches (15.494mm)
• Material: Case-carburized chrome steel (SAE-52100)
• Static Load Rating: 7,930 lbf
• Dynamic Load Rating: 8,680 lbf
• Maximum Speed: 8,000 RPM

Design Features:

• Conical rollers and raceways arranged with a common apex point
• Two-piece detachable design (cone and cup) for easy installation
• Capable of supporting heavy radial and axial loads simultaneously
• Case-hardened steel construction provides a hardened outer surface with a tough, ductile core
• Crowned roller design for increased load capacity and extended service life

This bearing set is ideal for gearboxes, hoisting equipment, rolling mills, mining machinery, vehicle axles (steer, drive, pusher, tag), engines, and propellers. The A34 interchange numbers include S34, SET34, LM12748, LM12710, 4T-LM12748, and 4T-LM12710, making it compatible with multiple OEM applications across automotive, marine, RV, and powersports industries.