304 Stainless Steel Engine Bearing Sleeve Adapter Extends Crankshaft Diameter From 1 Inch To 1-1/8 Inch For Keyed Gas Engines Fits Pulleys Gearboxes And Other Attachments Delivers Precise Alignment And Strong Mounting

Single Sleeve Adapter for 1-1/8 in Crankshafts (304 SS)
✔️ Compatible 1-1/8 in crank to 1.5 in extension with 1/4 in keyway

This engine bearing sleeve adapter is a 304 stainless steel, one-piece sleeve that slides onto crankshafts from 1.0 to 1.125 inches and extends the connection by 1.5 inches. It’s commonly used to repurpose old engines by fitting pulleys or gearboxes without replacing the entire crank.

✅ Sleeve I.D. 1.00 in (25.4 mm); O.D. 1-1/8 in (28.6 mm); length 4.5 in (114.3 mm)
✅ Extends crank diameter by 1.5 in (38.1 mm)
✅ Material: 304 stainless steel, corrosion resistant, one-piece construction
✅ Keyway: 1/4 in (6.35 mm) width; center through hole; tightening screws
✅ Includes two spacers and two key holders; screws 3/8-24 and 7/16-20
✅ Compatibility: Pulsar PTG1220D5, Realm RM-LM01-B2Z-340, Sun Joe MJ404E-360-RED, MJ408E

💡 What is a sleeve adapter for engine crankshafts and why is it handy for belt drive systems? This handy piece lets you reuse pulleys with different crank sizes without replacing motors. - Extends crank diameter by 1.5 in (38.1 mm) to fit existing pulleys and gearboxes - Keeps alignment with a 1/4 in (6.35 mm) keyway and center through hole - Made from 304 stainless steel for rust resistance and durability