Mobil SHC Polyrex 103 EM

Key features

• Polyurea thickener with synthetic base oil designed for high‑temperature operation in ball and roller bearings.
• NLGI grade 3 consistency for Mobil Polyrex EM 103, providing improved resistance to mechanical shear in vertical or heavily loaded bearings.
• Outstanding grease life at elevated temperatures, with ASTM D3336 tests showing long lubrication life at 177°C.
• Good control of oil separation, keeping lubricant where it is needed and reducing risk of grease hardening or purge in sealed bearings.
• Protection against rust and corrosion, including performance in synthetic sea water tests, supporting use in coastal and offshore plants.
• Low‑noise properties suitable for many noise‑sensitive motor applications when correctly selected.

Typical applications

• Electric motor bearings in process plants, power generation and HVAC systems, especially vertical motors and larger frames where stiffer grease is recommended.
• Fin‑fan bearings and high‑temperature pump bearings operating in hot, dusty environments.
• Factory‑filled, sealed‑for‑life ball and roller bearings where long service intervals are important.
• Rolling‑element bearings requiring low oil separation and stable structure at high operating temperatures.

Why it suits UAE and MENA operations

Electric motors on desert rigs, gas plants and refineries run hot, often in ambient temperatures above 45°C and with restricted cooling airflow due to dust and enclosure constraints. Mobil SHC Polyrex 103 EM is engineered to maintain structure and lubricating film at these temperatures, reducing bearing failures that lead to expensive unplanned downtime.

The grease’s corrosion resistance and performance in salt‑water environments make it suitable for motors on offshore platforms and coastal terminals where moisture and airborne salts attack unprotected bearings.

Ordering information

• Typical cartridge size around 14 oz (400 g), suitable for standard grease gun application into motor bearing housings.
• NLGI grade 3 for Polyrex EM 103 EM; check OEM guidance to choose between NLGI 2 Polyrex EM and NLGI 3 Polyrex EM 103.
• Compatible with many lithium‑complex and other mineral‑polyurea motor greases; follow ASTM D6185 compatibility guidance or consult your Mobil representative before mixing.

Order with confidence from Triune

• Triune supplies Mobil Polyrex EM and SHC Polyrex grades with full manufacturer documentation for motors in power generation and industrial plants.
• Support on selecting grease grades for vertical motors, large frame sizes and high‑temperature service in UAE and GCC facilities.
• Competitive pricing and consolidated shipments with other Mobil lubricants and rig consumables.
• Short lead times to keep maintenance campaigns and shutdowns on schedule.