Bell & Gossett 186571 Ball Bearing Pump For Series 1510 E-1510 Pumps

Bell & Gossett 186571 Ball Bearing Pump End (cataloged as 311KD) is a replaceable bearing assembly for Bell & Gossett Series 1510 and Series E-1510 base‑mounted end‑suction pumps. Identified by Mfr #186571, this pump end houses the shaft‑supporting ball bearings used in these models, with an 186571NG No Grease variant appearing in catalogs. The Series 1510/e‑1510 documentation notes that the bearing assembly is designed to support the shaft via two heavy‑duty regreaseable ball bearings, providing durable service in hydronic heating and cooling installations. These pumps are commonly used for domestic and process water applications, including boiler feed water, condensate, and general liquid transfer within HVAC and building‑service systems; the 1510/e‑1510 family is a base‑mounted end‑suction centrifugal pump configuration designed for reliable operation in such environments. In some catalogs, the 186571 part is listed as a discontinued item, so availability may vary by distributor or legacy inventory.