BB7420 Steel Cartridge BB JIS - 68x103mm

This BB7420 cartridge features a forged CrMo spindle designed for JIS square taper, ensuring excellent durability. It comes with industrial sealed cartridge bearings and oversized 3/16 inch ball bearings for smooth operation. You can choose between aluminum or steel cups according to your needs. Weighing 256g for alloy and 295g for steel, it's a lightweight yet sturdy option. Technical specs include a steel model, JIS square spindle interface, BSA shell with 33.6mmx24tpi shell ID, 68mm width, and 103mm spindle length.

Using this product is easy. First, make sure the spindle interface matches your device, which is JIS square. Then, install the cartridge carefully according to the size requirements. When choosing between aluminum and steel cups, consider your usage needs - aluminum is lighter and steel is more durable. As for maintenance, keep it clean and dry. If you notice any unusual noises during operation, check the bearings. Avoid over - tightening when installing to prevent damage to the bearings and spindle.