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Mobil Unirex N3 High Temperature Bearing Grease

Mobil Unirex N3 High Temperature Bearing Grease


Mobil Unirex N3 - 390g



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  • Description
  • Benefits
  • Specifications
  • Technical Info
  • Shipping Explained

Mobil Unirex N3 High Temperature Bearing Grease

UNIREX N3 grease is a premium-quality, lithium-complex product suitable for high-temperature service in rolling-element bearings. This versatile greases can be used in a wide range of industrial applications and are particularly recommended for electric-motor lubrication.

Unirex N greases exhibit excellent high and low temperature performance, resistance to water and corrosion, and long service life in a range of bearing applications.

UNIREX N 3 is an NLGI No. 3 grade often used for special applications such as sealed-for-life electric motor bearings, vertically mounted bearings, and higher-speed applications.

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FeaturesAdvantages and Potential Benefits
Excellent high-temperature performanceLithium-complex thickener resists softening / running out of bearings at temperatures up to 190°C
Outstanding grease lifeLaboratory bearing rig tests show outstanding continuous lubrication performance at bearing temperatures of up to 140°C
Very good low-temperature characteristicsStart-up power requirements are low at temperatures down to at least -20°C. Meets DIN 51825 low temperature torque requirements at -20°C
Excellent mechanical stabilityExhibits excellent resistance to softening due to mechanical working
Excellent water and corrosion resistanceResists water washout and protects bearings against corrosion
Excellent performance in high-speed applicationsChannelling characteristics provide excellent performance in high- speed deep-groove ball bearings. Unirex N3 is recommended where DmN (mean bearing diameter X rpm) exceeds 360,000


DIN 51825 - K3N - 20L and ISO L-XBDHA 3

Technical Information:

Typical Properties


Thickener Type
NLGI Grade
Color, Visual
Smooth, Buttery
Dropping Point, ASTM D 2265, °C
Base Oil Viscosity, ASTM D 445, cSt @ 40°C
Base Oil Viscosity Index, ASTM D 2270
Penetration, worked 60 stokes, ASTM D 217, mm/10
Penetration change after 100,000 strokes, ASTM D 217, mm/10
Oil Separation, ASTM D 6184, mass % @ 100°C / 30 hrs
EMCOR Corrosion , ASTM D 6138 (Distilled Water), rating
Water Washout @ 79°C, ASTM D 1264, mass %


SHIPPING IS FREE* for orders of £75 and over , regardless of the weight of your order.
We've tried to keep all other shipping costs as low as we can.

Carriage starts at just £0.95 (inc VAT) for small items, with our most common courier rate set at £5.99 for orders of 5kg (enough for 5 litres of oil).

  • *Free shipping is available for UK Royal Mail, UPS Access Point™ (click & collect) and standard UK courier services (not express / priority / islands).
  • Courier surcharges mean we are unable to offer free "to the door" courier shipping from us in Cornwall up to Highlands / Grampian in Scotland - and because we send a lot of liquids, not every courier option is available to us. UPS Access Point™ (click & collect) is available as a free shipping option across Scotland, Wales and England, wherever there is a UPS Access Point™ Location.
  • Carriage charges are based on weight - please see our table of carriage costs for full details (although adding an item to your cart and viewing the calculated carriage is often easier!).
  • Priority shipping is also available.

How long will it take to get my order?

We give an estimate of delivery dates as you shop and in your basket. The vast majority of items are held in stock and dispatched from our UK warehouse and we'll do all we can to get your order to you as quickly as possible.

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"Premium-quality, lithium-complex grease suitable for high-temperature service in rolling-element bearings"