Mfr. of  deep groove, single row, radial , precision angular contact and ball bearings. They also sell roller and double direction angular contact thrust and precision ceramic ball bearings. All of their products come in inch type or metric sizes ranging from 3/8 inch outside diameter to 15 3/4 inch outside diameter. Barden manufactures their products to ABEC 7 or  9. Their super precision bearings are used in very high speed applications.

Manufacturer of a variety of ball bearing types. The most common type are their deep groove single row ball bearings. These offer excellent radial load carrying in sealed or shielded designs. They are made of chrome steel and feature a standard inner diameter range of 10mm to 75mm.Their heavy load types offer excellent radial load carrying and come in sealed and shielded designs as well. They are made of chrome steel and offer a standard inner diameter range of 17mm to 100mm. Hartford's double row deep groove ball bearings are widely used in applications involving high rotational speed, and are made of chrome steel. Hartford also offers angular contact and plastic designs, as well as precision stainless steel and carbon steel balls.