Ever find the perfect engine, only to discover the crankshaft doesn't match your existing pulley system? It's frustrating when you have to replace perfectly good components just because of a simple size mismatch. This engine shaft adapter solves that exact problem, giving you the flexibility to use your trusted pulleys, gear boxes, and other components with new engines that have different shaft diameters.
Unlike universal adapters that compromise on fit and function, this sleeve adapter is precision-engineered for a perfect match. It converts a 1" diameter crankshaft with a 1/4" keyway to a 1-1/8" diameter with the same keyway, while extending the shaft length by 1.5 inches. The steel construction ensures durability and smooth operation, with minimal noise and vibration during use.
Everything you need is included in the package. The main sleeve adapter has an inside diameter of 1" and outside diameter of 1-1/8", with a length of 4.5". You'll also receive two special key stocks designed to compensate for the sleeve thickness, plus mounting screws (3/8-24 and 7/16-20) to secure everything firmly in place. The center through-hole design makes installation straightforward, and the keyway slots ensure proper alignment with your pulleys.
This adapter shines in workshops and repair situations where you need to maintain existing speed and power requirements. It's perfect for lawn mowers like the Pulsar PTG1220D5, Realm RM-LM01-B2Z-340, and Sun Joe models MJ404E-360-RED and MJ408E. Mechanics love how it allows them to adjust pulley speeds without buying entirely new motors or gear systems. Whether you're repairing equipment for a client or working on your own projects, this adapter pays for itself in just one use.
The simple yet effective design of this sleeve adapter means fewer moving parts that can fail. The belt pulley transmission remains smooth and efficient, with easy adjustment capabilities. By allowing you to adapt larger wheel bores to smaller axles, it opens up possibilities for upgrading or repurposing engines and components you might otherwise have to discard.
