Overview
The Inpro/Seal VB45-S bearing isolator is a next-generation permanent bearing protection solution engineered to extend bearing life and improve equipment reliability. With only a 14.61 mm (0.575 in.) overall length, the VB45-Sâ„¢ Bearing Isolator is the best protecting Bearing Isolator in the most compact design available. This bronze motor seal combines advanced sealing technology with space-efficient installation, making it ideal for pump motors, rotating equipment, and industrial machinery where bearing protection is critical.
Key Features
- IP66 Rating: A Interface – unique stator/rotor interface provides IP66 rated permanent protection against harmful dust particulates and water jets from all directions
- Compact Design: The VB45-S employs a compact design with only a 0.625 in. (15.88 mm) overall (axial) length, making it the shortest IP66 rated Bearing Isolator available. Installation often requires no equipment modifications
- Advanced Contamination Control: Contamination Chamber – collects contaminants trying to enter the bearing housing and expels them through the expulsion port through centrifugal force and gravity
- Lubrication Retention: The VB45-S utilizes an enlarged D-Groove to capture oil and return it back to the bearing housing or a grease band to block grease from traveling down the shaft and escaping from the bearing housing.
- Bronze Construction: Durable bearing bronze material for extended service life and reliability
- Patented XX Interface: Unique stator/rotor design provides permanent contamination ingress protection
Technical Specifications
- Overall Length (Axial): 15.88 mm (0.625 in.)
- IP Rating: IP66 (dust-tight and protected against powerful water jets)
- Standard Material: Bearing bronze
- Stator Gasket Elastomer: Nitrile, -37°C to +121°C (-35°F to 250°F)
- VBX® Ring Elastomer: FKM (Viton), -26°C to +204°C (-15°F to 400°F)
- Axial Clearance: 0.13 mm (0.005 in.)
- Radial Clearance: 0.25 mm (0.010 in.)
- Design: Two-piece split design (rotor/stator interface)
- Protection Type: Permanent bearing protection
Typical Applications
The Inpro/Seal VB45-S bearing isolator is specified for:
- Electric motor bearing housings (synchronous and induction motors)
- Centrifugal and gear pump applications
- Industrial pump and motor assemblies requiring contamination control
- Equipment operating in wet, dusty, or high-vibration environments
- Systems requiring improved bearing mean time between repair (MTBR)
- OEM and retrofit bearing protection installations
Compatibility & Replacements
Compatible With
- Electric motors with standard bearing housings
- Centrifugal and gear pumps with compatible shaft sizes
- Industrial rotating equipment with bearing bore diameters suited to VB45-S design
- Equipment operating with oil or grease lubrication systems
- Pillow block bearings and cartridge bearing designs
Replaces / Drop-In Replacement For
The VB45-S is a direct replacement for earlier Inpro/Seal bearing isolator models requiring IP66 permanent bearing protection. Verify the specific shaft diameter and bearing bore dimensions with system integrator documentation before ordering. This unit (Model 2100Y1B) is a complete isolator assembly ready for installation.
Works With
- Standard industrial bearing housings and adapter rings
- Oil-lubricated bearing systems with D-Groove oil return capability
- Grease-lubricated systems with grease band sealing option
- Rotating equipment maintenance and condition-monitoring programs
- Equipment retrofit and bearing life-extension initiatives
