Non-Flooded

Description 

The BI1710 Bearing Isolator is a precision-engineered, non-contact bearing protection device designed to retain oil, grease, or mist lubrication while preventing dust, dirt, water, chemical vapors, and other contaminants from entering the bearing housing. Its rotor-stator sealing geometry provides a controlled sealing path without shaft contact, helping eliminate lip-seal wear, shaft scoring, frictional heat generation, and routine seal replacement. 

 

Constructed from high-grade bronze, stainless steel, or custom-engineered alloys, the BI1710 is built for demanding rotating equipment operating in high-speed, high-temperature, wet, corrosive, or dust-laden environments. Optional magnetic face seals and high-performance elastomeric components further enhance protection and extend service life in severe applications. 

 

The BI1710 is suitable for horizontal and vertical electric motors, centrifugal and positive-displacement pumps, industrial gearboxes, blowers, exhaust fans, turbines, compressors, conveyors, and other process equipment across the chemical, pulp and paper, steel, power, cement, food and beverage, and pharmaceutical industries. Optional split, flanged, press-fit, magnetic-face, and application-specific configurations support retrofit installations, washdown areas, flooded housings, and high-contamination service. 

 

Technical Key Features 

• Extended service life is achieved through a zero-wear sealing mechanism. 

• Shaft-friendly design eliminates lip-seal scoring and other wear-related shaft damage. 

• Enhances equipment reliability and protection in demanding operating environments. 

• Minimizes total lifecycle cost by reducing wear, maintenance, and replacement frequency. 

• Reduces unplanned downtime by improving bearing protection and contamination control. 

• Flexible installation formats are available in flanged, press-fit, solid, and split configurations. 

• Standards and compliance options may be available to suit specific application requirements. 

• Excellent lubrication retention keeps oil, grease, and mist lubricants within the bearing housing. 

• Extends Mean Time Between Failures (MTBF) through reliable non-contact sealing performance. 

• Bi-directional sealing performance supports both clockwise and counter-clockwise shaft rotation. 

• Pressure equalization option helps balance internal housing pressure during operating transients. 

• Maintenance-free bearing protection reduces unplanned downtime and extends equipment MTBF. 

• Non-contact, frictionless operation eliminates shaft wear, grooving, heat generation, and parasitic drag. 

• Misalignment compensation on select models supports sealing integrity under minor shaft misalignment. 

• Split and solid configurations allow use in both new installations and retrofit applications without shaft disassembly. 

• Superior contaminant exclusion protects bearings from dust, dirt, moisture, water spray, and chemical vapor ingress. 

• Industry versatility makes the BI1710 suitable for electric motors, pumps, gearboxes, turbines, blowers, and other rotating equipment. 

 

Service Overview 

Parameter	Value
Equipment	Pumps, electric motors, industrial gearboxes, gear reducers, blowers, exhaust fans, turbines, compressors, conveyors, process machinery
Fluid	Bearing housing lubricants: oil, grease, oil mist; external exposure to dust, moisture, water spray, vapors, and light chemical contamination
Service Nature	Non-contact bearing protection for lubricant retention and contamination exclusion
Operating Mode	Continuous rotating service; suitable for horizontal and selected vertical shaft arrangements; engineered variants available for washdown, flooded, and retrofit duties

 

Specifications 

Item	Min	Max	Typical/Notes
Size	12.0 mm (0.500”)	500.0 mm (20.000”)	Custom sizes up to 1000 mm (39.370”) available on request
Pressure	0 bar (0 psi)	6 bar (87 psi)	Bearing housing protection duty; confirm configuration for pressure transients
Temp	-40°C (-40°F)	+200°C (+392°F)	Final limit depends on elastomer and material selection
Speed	—	7,000 fpm (35 m/s)	Surface speed at shaft OD; RPM depends on shaft diameter

 

Materials 

Component	Standard Material	Optional Material	Comment
Rotor & Stator	Bronze C932	SS 304 / SS 316 / custom alloy	Bronze for general industrial service; stainless steel for corrosive or hygienic duties
Retaining Ring	SS 304 / Aluminum	SS 316 / engineered alloy	Selected based on housing design, corrosion exposure, and speed
Flange / Mounting Hardware	SS 304 / Aluminum Alloy	SS 316 / CI custom	For flanged, press-fit, split, or retrofit mounting arrangements
Secondary Seals / O-rings	NBR / FKM (Viton)	EPDM / PTFE / FEP-encapsulated Viton	Selected for lubricant, temperature, and chemical compatibility
Magnetic Face Seal	Optional	Magnetic face seal assembly	Used for high splash, oil mist, flooded, or sensitive sealing environments

 

Applications 

• Steam turbines and compressors. 

• Horizontal and vertical electric motors. 

• Industrial gearboxes and gear reducers. 

• Blowers, exhaust fans, and process fans. 

• Centrifugal and positive displacement pumps. 

• Conveyors, pillow blocks, and auxiliary rotating equipment. 

• Chemical, pulp and paper, steel, power, cement, food and beverage, and pharmaceutical process equipment. 

 

Operating Limits 

Parameter	Value
Pressure	Up to 6 bar (87 psi)
Temp	-40°C to +200°C (-40°F to +392°F)
Speed	Up to 7,000 fpm (35 m/s)
Size Range	12.0 mm to 500.0 mm (0.500” to 20.000”); custom up to 1000 mm (39.370”)

 

Selection Note 

Verify final material selection, elastomer grade, installation orientation, drain-back position, and pressure suitability against the actual equipment drawing and site operating conditions before release for manufacture.