Description
The Browning VF4B-335 is a medium duty, four bolt flange-mounted cast iron ball bearing engineered for reliable performance in demanding HVAC and industrial power transmission applications. Featuring a 2-3/16″ bore diameter, this unit accommodates a wide range of shaft sizes commonly found in blower assemblies, fan drives, and other rotating equipment.
BOA Concentric Locking System
The VF4B-335 utilizes Browning’s BOA (Bearing Over-Adapter) concentric locking collar, which provides a secure, centered grip on the shaft. This design minimizes shaft damage during installation and removal, reduces fretting corrosion, and ensures consistent bearing alignment — all critical factors for extended service life in HVAC fan and blower applications.
Sealing Technology
This bearing is equipped with both a contact seal and a flinger seal, delivering a dual-layer defense against contamination. The contact seal provides a positive barrier against dust, dirt, and moisture, while the outer flinger seal deflects larger debris before it can reach the contact seal — keeping the bearing lubricated and protected in harsh operating environments.
Key Features
- Bore Diameter: 2-3/16″
- Mounting Style: Four bolt flange (VF4B series)
- Housing Material: Cast iron for superior rigidity and vibration damping
- Duty Rating: Medium duty
- Locking Method: BOA concentric locking collar
- Seal Type: Contact seal and flinger seal combination
- Brand: Browning (Regal Rexnord)
- SKU: VF4B-335
Applications
- HVAC blower and fan shaft support
- Air handling unit drive systems
- Conveyor and material handling equipment
- Pump and compressor shaft mounting
- General industrial power transmission
Why Choose Browning Bearings?
Browning has been a trusted name in power transmission for over a century. The VF4B series four bolt flange bearings are designed for easy installation, long service intervals, and compatibility with standard Browning sheaves, bushings, and belts — making them a go-to choice for HVAC technicians and mechanical contractors who demand dependable components.
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