The Timken Company 99212 Redi-Sleeve Shaft Repair Sleeve

The Timken National Redi-Sleeve 99212 is a stainless steel shaft repair sleeve that restores worn, grooved, or damaged sealing surfaces without shaft replacement or machining. Installed directly over the existing shaft, it creates a smooth, hardened running surface that extends the service life of standard radial shaft oil seals and reduces maintenance downtime. This precision thin-wall sleeve from Timken's Redi-Sleeve 99000 Series features a flange and a lead-free, precision-ground finish of 10–20 μin Ra (0.25–0.50 μm Ra). Technical specs include shaft size range 2.124–2.130 in (53.95–54.10 mm), nominal shaft diameter 2.127 in (54.03 mm), flanged outside diameter 2.422 in (61.52 mm), width on shaft (seal running surface) 0.781 in (19.84 mm), overall width 0.938 in (23.83 mm), and installation depth 1.375 in (34.93 mm). It is designed to repair worn seal contact surfaces while preserving the original shaft and standard oil seal size, compatible with standard radial shaft seals for approximately 2.126 in shaft diameters. Typical applications include pumps, gearboxes, compressors, electric motors, conveyors, agricultural equipment, wheel hubs, and other industrial rotating machinery experiencing lubricant leakage or premature seal failure. Common replacements include SKF Speedi-Sleeve 99212 and the National Redi-Sleeve 99212 equivalent.