NSK 68BWKH18 Axle Bearing and Hub Assembly - Front

Overview of NSK 68BWKH18 Axle Bearing and Hub Assembly

The NSK 68BWKH18 axle bearing and hub assembly is designed for select Infiniti and Nissan models, including the 370Z, FX35, G35, and Q50. This non-driven hub assembly features an integrated magnetic encoder for ABS systems, ensuring precise wheel speed monitoring and reliable performance.

• ABS equipped with magnetic encoder for accurate wheel speed sensing
• Bolt circle diameter mounting flange: 120 mm
• Bolt circle diameter wheel flange: 114.3 mm
• Flange bolt hole quantity: 4 with M12x1.25 bolt hole size/thread
• Wheel stud quantity: 5 with M12x1.25 stud size
• Brake pilot diameter: 68 mm
• Flange diameter: 136 mm with 40.7 mm flange offset
• Hub pilot diameter: 93 mm and wheel pilot diameter: 66 mm
• Generation 3 design for enhanced durability and fitment

Detailed Product Description

This NSK axle bearing and hub assembly (part number 68BWKH18) is engineered to meet the specific requirements of various Infiniti and Nissan vehicles, including the Infiniti Q40, Q60, FX37, and Nissan 370Z. The assembly is non-driven, making it suitable for rear or front non-driven axle applications. The integrated magnetic encoder ABS tone ring provides reliable ABS signal transmission, critical for modern vehicle safety systems.

The precise bolt circle diameters of 120 mm (mounting flange) and 114.3 mm (wheel flange), combined with the 5-wheel stud configuration, ensure a secure and exact fit. The flange offset of 40.7 mm and brake pilot diameter of 68 mm are designed to maintain proper brake rotor alignment and wheel positioning. This assembly is manufactured to Generation 3 standards, reflecting improvements in material quality and manufacturing precision.

Compatible Vehicles and Applications

• Infiniti models: 370Z, EX35, EX37, FX35, FX37, G25, G35, G37, M35, M35h, M37, M45, M56, Q40, Q50, Q60, Q70, Q70L, QX50, QX70, Z
• Nissan models: 370Z and other compatible vehicles within the specified fitment range

Common Issues Addressed by This Hub Assembly

• Wheel bearing noise or roughness during driving
• ABS warning light due to faulty tone ring or sensor
• Excessive play or looseness in the wheel hub
• Vibration or wobbling at certain speeds
• Uneven brake rotor wear caused by improper hub alignment

Installation Notes and Tips

• Ensure compatibility with vehicle make and model before installation
• Use proper torque specifications for M12x1.25 flange bolts and wheel studs
• Inspect surrounding suspension and brake components during replacement
• Verify ABS sensor connection and signal after installation
• Follow manufacturer guidelines for hub bearing preload and seating

Quality Assurance and Warranty

NSK manufactures this axle bearing and hub assembly to meet strict OEM standards, ensuring reliable performance and durability. The Generation 3 design incorporates advanced materials and precision engineering. While specific warranty details may vary, NSK products typically come with a limited warranty covering defects in materials and workmanship.