With Electrical Grounding Bearing Gard TM With Electrical Grounding

Why use a Bearing Gard with Electrical Grounding? Extend electric motor life and improve reliability Electric motors driven with Variable Frequency Drives (VFDs) have two main failure modes: bearing contamination and bearing damage from electrical discharge machining (EDM) commonly known as electrical fluting The Bearing Gard with electrical grounding provides excellent protection against these two failure modes: The Bearing Gard provides protection against contamination ingress Flowserve has partnered with the Industry leader in shaft voltage grounding, AEGIS®, to provide the AEGIS SGR to protect against EMD Combined into one easy to install package, the Bearing Gard with electrical grounding is the best way to protect motors using VFDs

Bearing Gard with Electrical Grounding Two great technologies in one simple package Full-featured Bearing Gard AEGIS® Grounding Ring

Electrical Grounding How it Works

PWM Voltage to Motors – A Problem for Bearings Unbalanced voltage condition When operated by VFD, the power to the motor is a series of positive and negative pulses instead of a smooth sine wave. The input voltage is never balanced because the voltage is either 0 volts, positive, or negative with rapid switching between pulses in all three phases. Bearing protection needed to mitigate electrical discharge machining (EDM) damage in bearings caused by the unbalanced voltage.

Prevent EDM with AEGIS® Electrical discharge machining (EDM) creates thousands of pits Bearings degrade, resulting in increased friction and noise Eventually, the rolling elements can cause fluting damage to the bearing races Bearing lubrication/grease deteriorates/burnt Potential for costly unplanned downtime

Patented AEGIS® Ring design Specially Designed Microfibers Flex Without Breaking – Ultra Low Friction Patented FiberLock™ Channel Secures and Protects Fibers AEGIS® Ring discharges harmful shaft voltages away from the bearing to ground

When Destructive Shaft Voltages are Present SHAFT VOLTAGE READING WITHOUT AEGIS® : SHAFT VOLTAGE READING WITH AEGIS®: PROBLEM SOLUTION

AEGIS® Award Winning Technology

Bearing Gard with electrical grounding Validation testing measured shaft voltage with and without grounding Bearing Gard with AEGIS® grounding ring

Bearing Gard with electrical grounding Validation testing measured shaft voltage with and without grounding Bearing Gard with AEGIS® grounding ring

Bearing Gard with electrical grounding Validation testing showed 98% drop in shaft voltage Voltage without Bearing Gard with electrical grounding Voltage with Bearing Gard with electrical grounding

Bearing Gard Key Features Contamination exclusion Oversized OD drain channel Protected rotor/stator interface Large collection area Superior drain design

Bearing Gard Key Features Unitization with axial runout Improved unitization feature Prevents shut-off O-ring binding Axial runout up to 0.63 mm (0.025 in) Exceeds competition’s standard axial runout of 0.13 mm (0.005 in)

Bearing Gard Key Features Innovative shut-off design Improved static sealing Tapered shoulder creates positive side wall sealing at all times Dynamically lifts off to prevent wear at operational speed Increased reliability by preventing O-ring binding RPM

Bearing Gard Key Features Unique double drive ring Standard version only (not slimline) Superior shaft grip Improved rotor stability Compact size

Bearing Gard with electrical grounding Two cross-sections for easy application Standard version maximizes performance and reliability for contamination exclusion, current carrying capacity and surface contact area Slimline version provides protection for light duty and space constricted applications

Bearing Gard with electrical grounding Smart part code for quick and easy ordering BGEXXXXYYYYSDBV BGEXXXXYYYYTNBV

Bearing Gard with electrical grounding Smart part code for quick and easy ordering BGEXXXXYYYYSDBV BG – Bearing Gard E - Electrical grounding XXXX – shaft dimension 2.000 inch shaft – 2000 40 mm shaft – M040 mm in even increments only Convert fractional mm to inch YYYY – bore dimension SD – standard design / TN – slimline design B – Bronze V – FKM O-rings

Bearing Gard with electrical grounding Lead-time information Shaft diameters: 23 – 152 mm (.875 – 6.000 inch) Housing bore: 20-50 mm (.750 – 2.000 inch) over shaft size Standard or slimline length O-ring: FKM Rotor and Stator: Bronze Non-stock Aegis ring - Custom shaft and housing dimensions Ship 2 days after receipt of order Shaft size with stocked Aegis ring – Custom housing dimension Same day shipment Orders completed before 3 pm Must ship FedEx

Bearing Gard with electrical grounding Stocking information There are no standard sizes for the sealing area of electric motors AEGIS® rings can be stocked by shaft size for different bore sizes Inform the product manager if you would like a size stocked for quick delivery Typical sealing area for electric motor. Note: first installation may require housing to be bored to fit Bearing Gard.

Support materials Available from your local Flowserve representative Dimensional information sheet (standard Bearing Gard FTA 204) Product brochure Installation instructions (standard Bearing Gard FIS223)

Bearing Gard with electrical grounding Your local Flowserve Representative is your partner to: Confirm part numbers Confirm pricing Confirm availability Request stocked sizes Request engineered solutions