7040 Series Angular Contact Ball Bearing | High Load Capacity Design

• Heavy CNC Machining Centers
• Boring Machine Spindles
• Milling Machine Spindles
• Large Robotic Rotary Axes
• Industrial Indexing Tables
• Precision Grinding Heads

• High-Pressure Multistage Pumps
• Process Pump Shafts
• Screw Compressor Rotors
• Large Industrial Fan Drives
• Exhaust Gas Blowers
• Cooling Tower Fan Drives

• Industrial Gear Motors
• Traction Motor Supports
• Large Servo Drives
• Conveyor Drive Systems
• Paper Mill Drives
• Printing Machinery Drives

• Commercial Vehicle Axle Systems
• Railway Traction Motor Bearings
• Construction Equipment Drives
• Test Rig Spindles
• Dynamometer Supports
• Heavy-Duty Positioning Systems

01. Enhanced Load Capacity & System Rigidity

With optimized contact angles (15°, 25°, or 40°), the 7040 Series delivers exceptional axial load carrying capacity and superior shaft rigidity, minimizing deflection under heavy loads. This ensures precision and stability in demanding applications.

02. High-Speed Capability with Precision

Produced to high tolerance grades (including P5 and P4 options), these bearings ensure smooth, low-vibration operation at elevated speeds. Ideal for high-speed industrial spindles and precision power transmission units.

03. Flexible Arrangement & Protection Options

Suitable for single or multiple bearing arrangements (back-to-back, face-to-face, or tandem) to meet specific load and stiffness needs. Available with shields (ZZ) for contamination protection or contact seals (2RS) for pre-greased, maintenance-free operation in diverse environments.

Interchange Part Numbers

Direct replacement for:

• SKF: 7040 C, 7040 AC, 7040 B
• NSK: 7040C, 7040AC
• FAG: 7040 C, 7040 AC
• NTN: 7040C, 7040AC

Design & Configuration

The 7040 Series is typically offered in an open design for direct lubrication, with optional non-contact metal shields (ZZ) for basic protection. For applications requiring sealed, pre-lubricated solutions, contact rubber seals (2RS) are available. The selectable contact angles (C=15°, AC=25°, B=40°) allow engineers to tailor the bearing to specific axial load and rigidity needs.

"For industrial gearboxes and heavy-duty pump systems requiring substantial axial stiffness, the 7040 AC (25° contact angle) offers an excellent combination of load capacity and operational speed.”