Bell Gossett Bg 186863LF Bearing Assembly 0.5 Inch Shaft

Product Description

The BELL GOSSETT BG 186863LF is a lead-free, oil-lubricated bearing assembly designed to rebuild and repair centrifugal hydronic circulation pumps with a 0.5-inch pump shaft. It is compatible with Series PD booster pumps, Series 60 in-line pumps, and Series 1522 close-coupled end suction pumps. The assembly ships pre-assembled and includes a Buna standard seal kit and a body gasket, giving technicians everything needed for a complete pump rebuild in a single kit. Weighing 4.99 pounds, this assembly is built for straightforward field or shop installation by licensed plumbing and mechanical contractors.

This bearing assembly is suited for residential and light commercial hydronic heating and cooling systems where Bell Gossett Series PD, Series 60, or Series 1522 pumps are installed. It is the preferred repair path when a pump exhibits bearing wear, shaft seal leakage, or internal mechanical failure. Because the assembly is pre-assembled and self-contained, a complete pump rebuild can be performed without removing the pump body from the piping, reducing system downtime and labor. Compatible model numbers span a broad range of Bell Gossett pump configurations across all three series.

Key Features

• Lead-free construction for compliance with potable and hydronic system requirements
• Oil-lubricated bearing design for reliable long-term operation
• Pre-assembled unit includes Buna standard seal kit and body gasket
• Enables full pump rebuild without removing the pump from the piping
• 0.5-inch shaft size fits Series PD, Series 60, and Series 1522 pump configurations
• Replaces obsolete part numbers 186863 and 186864

Compatibility

Designed to repair Bell Gossett Series PD booster, Series 60 in-line, and Series 1522 close-coupled end suction pumps with 0.5-inch shafts. Compatible pump models include: 11T, 12S-1, 12T-1, 14S, 14T, 15T-1, 16S-1, 16T-1, 17S, 17T, 1S-1, 1T-1, 2S-1, 2T-1, 3S-1, 3T-1, 4S, 4T, 5S-1, 5T-1, 60-11S, 60-11T, 60-13S, 60-13T, 60-14S, 60-14T, 60-1S, 60-1T, 60-2S, 60-2T, 60-3S, 60-3T, 60-4S, 60-4T, 6S-1, 6T-1, 7S-1, 7T-1, 8S-1, 8T-1, 9S-1, 9T-1, PD-35S, PD-35T, PD-37S, PD-37T. Replaces part numbers 186863 and 186864.

Installation Notes

Installation should be performed by a licensed plumbing or mechanical contractor in accordance with applicable local codes and the International Plumbing Code (IPC). Shut down and isolate the pump from system pressure before beginning disassembly, and allow the system fluid to cool to a safe handling temperature. The pre-assembled bearing assembly design allows the pump to remain in the piping during the rebuild, but all electrical power to the pump motor must be locked out and tagged out before any work begins. Verify shaft size and pump series before installation to confirm correct fitment.

Technical Specifications

• Shaft Size: 0.5 inches
• Pump Series Repaired: Series PD, Series 60, Series 1522
• Seal Material: Buna (standard)
• Lead-Free: Yes
• Lubrication Type: Oil-lubricated
• Length: 7.45 inches
• Width: 7.25 inches
• Height: 8.8 inches
• Weight: 4.99 pounds
• GTIN (UPC/EAN): 683328222844
• Replaces: 186863, 186864

Standard Information

• Brand: BELL GOSSETT
• Manufacturer Part Number: BG 186863LF