Cylindrical Roller Bearings
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Double Row High precision Cylindrical roller bearings

Double row cylindrical roller bearings with cylindrical bore and Taper bore . This kind of bearing has a compact structure, rigidity, load capacity, deformed by the load, etc, especially suitable for spindle machine support. Taper bore also can play the role of the micro-adjust the clearance, and can simplify the positioning device structure, easy installation and removal.

Super-precision double row cylindrical roller bearings are produced by HRT as standard in the NN design and NNU design.

NN design bearings can provide a unique balance between load carrying capacity, rigidity and speed and are therefore typically used as the drive end bearing in machine tool spindles.

NNU design bearings, with a very low cross sectional height, provide a higher degree of stiffness than bearings in the NN 30 series. However, NN 30 series bearings can accommodate heavier loads.

HRT double row cylindrical roller bearings are available with either a cylindrical or a tapered bore (taper 1:12). In machine tool applications, cylindrical roller bearings with a tapered bore are preferred, because the taper enables more accurate adjustment of clearance or preload during installation.