90mm universal bearing pulley wheel is designed for fitness equipment, garage door pulley systems, sliding door pulleys, cable machines, and other spare parts. Outer diameter: 90 mm; Inner hole diameter: 10 mm; Thickness: 25 mm; Groove depth: 10 mm; Groove width: 8 mm. Suitable for ropes with a diameter of up to 7 mm. The inner core of the cable pulley is made of solid steel, while the outer wheel is constructed from durable nylon, allowing the universal pulley to support a maximum load of 300 kg. The 90 mm nylon pulley is lightweight, wear-resistant, and offers a long service life. It operates quietly, produces no friction sparks, provides reliable safety performance, and is easy to install. Nylon wheels are increasingly replacing traditional metal pulleys due to their superior performance and are widely used in lifting equipment and tower crane accessories.