MRC Angular Contact Bearing 7209PJ DTDF 45 x 85 x 19 mm

The MRC 7209PJDTDF H702 is a super precision angular contact ball bearing matched set sold in its original factory MRC box. The 7209 base designation identifies a 45 mm bore, 85 mm outside diameter, 19 mm width angular contact ball bearing in the 7200 light series. The PJ suffix designates a 40 degree contact angle with one heavy race shoulder on the outer ring opposing one heavy race shoulder and one recessed race shoulder on the inner ring, a construction that allows a greater ball complement than a deep groove non filling notch bearing for higher thrust load carrying capacity. The DTDF suffix identifies a four bearing matched stack arrangement combining a tandem pair with a face to face duplex pair, a configuration commonly specified for high speed machine tool spindles where heavy bidirectional thrust and combined radial loads must be carried with precise preload and stiffness. The H702 suffix denotes the factory preload class assigned to this matched set. MRC, now part of the SKF Group, manufactures these super precision matched sets at ABEC Grade 3 bore tolerances or tighter to maintain consistent preload across the stack and minimize the risk of thermal runaway during high speed operation. Typical applications include CNC lathe and machining center spindles, high speed grinder spindles, precision boring machines, pump assemblies with combined thrust and radial loads, and aerospace power transmission systems. The matched set ships in its original red MRC factory box with sealed inner packaging.

Stock # 0326-248