Harken Blackmagic Cage And Bearing Assembly

The Harken BlackMagic Cage & Bearing Assembly is a precision spare part designed for the BlackMagic loop block series. Whether you’re repairing a 57 mm or 75 mm unit, this cage and bearing rebuild kit restores the block’s performance, ensuring smooth operation, reduced friction, and long life.

Features

• Full Cage Replacement - A direct swap for the roller portion of BlackMagic loop blocks
• High-Quality Bearings - Minimizes friction and wear for optimal line movement
• Compatible Sizes - Available for 57 mm and 75 mm BlackMagic blocks
• OEM Spec Parts - Manufactured to Harken’s original standards for fit and reliability
• Durable Materials - Designed to stand up to marine conditions, load cycling, and salt exposure

Specification

• Weight (oz): 0.5 oz. ( 1.42 g ) | 0.8 oz. ( 22.68 g )
• Product Role: Roller cage + bearing spare
• Replacement Type: Cage & bearing assembly