Ace BAC-31-1 Sealed Ball Bearing – BAC-10 PTO Drive Shaft

The Ace BAC-31-1 Sealed Ball Bearing is a genuine Ace Pump replacement bearing designed for the BAC-10 drive shaft used in compatible Ace PTO-driven centrifugal pumps.

The bearing supports the rotating PTO drive shaft, helping maintain proper shaft alignment and smooth operation. Over time, bearing wear can lead to excessive noise, vibration, or shaft movement, potentially causing damage to other pump components.

The BAC-31-1 replaced the original BAC-31 bearing in Ace PTO pump assemblies beginning in 1992. It provides the same load ratings as the original bearing but features an updated design with equal-width inner and outer races.

Replacing worn bearings can help restore proper shaft support, reduce vibration, and extend the service life of your existing PTO-driven centrifugal pump.

Whether performing preventative maintenance or repairing a worn PTO drive assembly, the Ace BAC-31-1 provides an OEM replacement solution for compatible agricultural spraying equipment.

Key Features

• Genuine Ace Pump Replacement Part: OEM sealed ball bearing, part number BAC-31-1.

• Sealed Bearing Design: Designed to support smooth rotation of the PTO drive shaft.

• BAC-10 Shaft Compatibility: Used in compatible Ace PTO drive assemblies.

• Updated Bearing Design: Replaces the original BAC-31 bearing when used with the correct shaft components.

• Original Load Ratings: Maintains the same load ratings as the previous BAC-31 bearing.

• Pump Maintenance: Helps address bearing-related noise, vibration, and shaft movement.

• PTO Pump Applications: Used in compatible Ace PTOC Series centrifugal pump assemblies.

• Serviceable Component: Allows replacement of worn drive shaft bearings without replacing the complete pump.

Fitment / Compatible With

The Ace BAC-31-1 sealed ball bearing is designed for:

• Ace BAC-10 PTO drive shafts with the updated bearing configuration

• Ace PTOC-600 Series centrifugal pumps

• Ace PTOC-1000 Series centrifugal pumps

• Ace PTOC-150 Series centrifugal pumps

• Compatible Ace PTO drive shaft assemblies manufactured with the updated bearing configuration

Important Compatibility Information:

• The BAC-31-1 bearing was introduced into Ace PTO pump assemblies beginning in fall 1992.

• Updated assemblies use the BAC-38-1 bearing spacer.

• The updated BAC-10 drive shaft and BAC-27 nameplate configuration must be used with the BAC-31-1 bearing.

• Older assemblies using the original BAC-31 bearing may require the Ace BAC-31-RETRO retrofit kit.

• Ace indicates that pumps with a green logo or date code of 792 or later most likely contain the updated bearing configuration.

• Verify the existing shaft and bearing configuration before ordering.