7306 B Series Angular Contact Ball Bearing | 40° Contact Angle for Maximum Axial Rigidity

• Lathe Tailstock Spindles
• Vertical Machining Center (VMC) Z-Axis Drives
• Boring Machine Thrust Units
• Grinding Machine Wheel Head Adjustments
• Precision Screw Drive Mechanisms

• Industrial Worm Gear Reducers
• Heavy Machinery Transmission Input/Output Shafts
• Mining Conveyor Drive Gearboxes
• Extrusion Machine Gear Drives
• High-Torque Positioning Drives

• Multi-Stage Centrifugal Pump Thrust Supports
• Axial Piston Pump Drives
• Screw Compressor Rotor Positioning
• High-Pressure Hydraulic Pump Shafts
• Industrial Process Pumps

• Automotive Clutch Release Bearings (Heavy-Duty)
• Off-Highway Vehicle Steering Pivot Supports
• Test Stand Load Simulators
• Wind Turbine Pitch Control Mechanisms (Auxiliary)
• Heavy-Duty Industrial Fan Thrust Supports

01. Maximum Axial Load Capacity & Stiffness

The defining 40° contact angle (B design) provides the highest axial load carrying capability and axial rigidity within the angular contact bearing range, effectively resisting thrust forces and preventing axial play.

02. Optimized for Combined Load Scenarios

While excelling in axial performance, its design also reliably supports substantial radial loads, making it suitable for applications where both load types are present but axial demands dominate.

03. Robust Construction for Demanding Environments

Built with high-grade materials and precise geometry to ensure reliable operation under high stress. Available configurations include open designs for oil lubrication or shielded/sealed versions for simplified maintenance.

Interchange Part Numbers

Direct replacement for 40° contact angle (B design) models:

• SKF: 7306 B
• NSK: 7306 B
• FAG: 77306B
• NTN: 7306B

Design & Configuration

The 7306 B is characterized by its steep 40° contact angle, which is optimized for applications where axial loads are primary. It is commonly supplied as an open bearing for forced oil lubrication in heavy machinery. For other applications, shields (ZZ) or seals (2RS) can be specified. This bearing is often used singly or in carefully designed arrangements where its high axial stiffness is the key requirement.

"In applications like vertical spindle supports or thrust reversers where axial load is predominant, the 7306 B (40° contact angle) provides unmatched rigidity and load-bearing performance.”