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MOLYKOTE® BG-20 Bearing Grease

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MOLYKOTE® BG-20 Bearing Grease is an NLGI Grade 2, polyol ester–based grease with a lithium complex thickener and a base oil viscosity of 55 cSt at 40°C.

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Product Overview

MOLYKOTE® BG-20 Bearing Grease is a high-performance synthetic polyol ester (POE) based grease to protect bearings under medium to heavy loads.  It is also an ideal grease for metal-on-metal surface interaction with rapid movements.

MOLYKOTE® BG-20 Grease is formulated completely free of lead or nickel to avoid metal reactivity and damage. It does not sacrifice high load-carrying capability due to its performance additive package for extreme pressure (EP) and anti-wear (AW). MOLYKOTE® BG-20 Bearing Grease exhibits incredibly high thermal stability across a broad service temperature range of −45°C to 180°C (−49°F to 356°F) and up to 200°C (392°F) for short periods of time.

Applications

Prior to applying MOLYKOTE® BG-20, the surface of the component should be clean and free of all dust, dirt, and debris. MOLYKOTE® BG-20 Bearing Grease can be applied by hand via grease gun, spatula, brush, or automatic lubricating system.

MOLYKOTE® BG-20 Grease is suitable for a range of bearings in industrial equipment, including but not limited to the following:

Medium- to heavy-loaded equipment
High to very high RPM speeds
Extremely high-temperature exposure
Clutch release bearings
Blower and calender roller bearings
Electric motors

Features & Benefits

Lead and nickel free
High load-carrying capability
Very low oil evaporation rates
Low oxidation tendency
Broad service temperature range (−45°C to 180°C)
Stable at very high rotational speeds (750,000 DN-value)

Problems Solved

Excessive oil loss or evaporation rates
Narrow thermal stability or degradation
Quickly oxidizing grease and deposit buildup

Product Specifications

Base oil viscosity @ 40°C: 55 mm²/s
NLGI Grade: 2–3
Thickener: Lithium complex
Low temperature: −46°C (−50°F)
High temperature: 182°C (360°F)
Unworked penetration (mm/10): 240–270
Color: Beige
Density: 1.01 g/mL
Low-temperature torque test (−50°C) 
-    Initial breakaway (Nm): 1,004x10^−3
-    Torque after 60 minutes (NM): 313x10^−3
 

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