Timken 313KDD Radial Deep Groove Ball Bearing

The Timken 313KDD is a single-row radial deep groove ball bearing from Timken Fafnir's 300 Series, featuring double shields (KDD) to help retain lubricant and seal out dust while supporting primarily radial loads with moderate axial loads in both directions. It has a 65 mm bore (2.559 in), an outside diameter of 140 mm (5.512 in), and a width of 33 mm (1.299 in). This steel-caged bearing is ABEC 1 precision with an internal clearance of C0 and is designed for factory lubrication (Electric Motor Quality, EMQ) to deliver smooth, low-friction operation across a temperature range from -50°C to 120°C. Dynamic radial load rating is 102,700 N (23,100 lbf) and static radial load rating is 59,600 N (13,400 lbf); limiting speeds are 5,385 rpm (grease) and 6,154 rpm (oil). Weighing about 2.17 kg (4.78 lb), the 313KDD combines a heavy cross-section 300 Series design with double-shield protection to extend service life in demanding environments. Common replacements include SKF 6313-2Z and NSK 6313ZZ deep groove bearings.