Plastic Anchor Roller Wheel Ø37.5 x 32 mm (Replacement Sheave)

This replacement plastic wheel for your anchor roller allows you to keep your anchoring gear in top condition. Over time, original rollers can wear down, crack, or deform under the strain of the anchor chain – swapping them out ensures your anchor continues to deploy and retrieve smoothly. This spare sheave is a universal design with 37.5mm diameter and 32mm width, compatible with many bow roller assemblies (commonly found on stainless bow rollers).

The material is a durable engineering plastic (black) formulated to resist UV rays and saltwater – perfect for marine use without cracking or becoming brittle easily. For added longevity, the center of the wheel contains a metal sleeve (bushing) that acts as a bearing surface between the roller and the pin/axle. This sleeve prevents direct plastic-to-metal friction, extending the life of both the roller and the shaft/bolt.

Usage & installation: Replacing the wheel is straightforward – remove the axle bolt or pin from your old roller, take out the worn sheave, and insert the new one, ensuring the metal bushing aligns with the shaft. Re-secure the bolt/pin. After replacement, you’ll notice an immediate improvement: your chain and rope will run effortlessly, and the rumbling noise of a worn wheel will be greatly reduced. This spare part is especially handy for boats that anchor frequently – it’s wise to keep a backup roller on board for emergencies or during annual maintenance.