Open Girth Gear Lubricants

About Open Girth Gear

An open girth gear is a large, external gear typically used in heavy-duty industrial machinery such as ball mills, rotary kilns, and cement or mining equipment. Designed to transmit high torque and handle substantial loads, these gears operate with an open, exposed configuration that allows for easy inspection and maintenance. Their robust construction ensures long-term performance even in harsh operating environments. Proper alignment, lubrication, and routine monitoring are essential to extend their lifespan and maintain operational efficiency.

We offer a range to high performance engineered lubriants for mills, kilns girth gears, please refer below.

Open Girth Gear Lubricants

Gear Shield® NC

When it comes to best girth gear grease Petron is the world leader in lubricants for open gear drives on stationary rotating machinery. Gear Shield® is a high-viscosity lubricant for open gears that provides superior separation of gear teeth in the heaviest loaded zone of gear tooth mesh. Rich in high-viscosity base fluid combined with E.P. and oxidation-resistant additives further enhancing this protection capability. Readily pump able for good lubrication distribution and easily drainable. Petron Gear Shield® is a choice for: mills and kilns in mineral processing, power generation, windmills, steel, and cement industries.

Benefits

Petron Gear Shield series of Lubricants for Open Gears offers the following benefits:

  • Very high viscosity: cSt @ 100°C (ASTM D445) >1,600 to 7000.

  • Provides higher lubricant film thickness (Lamba) between gears meshing teeth: means increased separation of meshing teeth, therefore reduced metal-to-metal contact, thus reduced wear rate & enhanced protection.

  • Protection in the most heavily loaded zones of gear teeth mesh.

  • Lower Specific Mass Loss, which means considerably lesser wear rate, thus extending the operating life of Girth Gears.

  • Lubricant film rupture is eliminated, which means reduction in: "(a) metal to metal contact and (b) wear rate" - thus increasing the Gears Operating Life.

  • Reduction in Lubricant consumption (in comparison with other Open Gear Lubricants): Lubricant cost saving as well as lesser quantity for disposal.

  • Pumps freely from the drum/pump to the lubricant spray system.

  • Drains freely along with dust particles to drain.

  • Removal of dust particles along with lubricant to drain also helps to increase in gears' operating life.

  • Lubricant deposits are eliminated from gears/guards.

  • Others

Film Strength Restored

Lubricant Rupture Evident

High Viscosity Film

Gear Shield P

Petron GEAR SHIELD® P is semi synthetic Gear oil for kiln girth gear lubrication and other open gear lubrication applications. Gear Shield P open-gear grease is a high viscosity and is one of the high-performance Engineered open gear lubricants of the Petron Gear Shield series, designed for open gear drives on stationary rotating machinery. Gear Shield P can be applied through an auto-lube system, sump, or bath-type application.

Petron Gear Shield P is a high viscosity and is a semi-synthetic gear oil type lubricant that is part of a long family of proven open-gear lubes open gear lubrication. Gear Shield P is a high-viscosity fluid that provides superior separation of gear teeth on rotating machinery and it is especially effective on rotating machinery that operates at elevated temperatures. These units would include kilns, driers, and coal mills.

Gear Shield P is a blend of high-viscosity semi synthetic gear oil and mineral base fluids as well as a highly refined resin. These resins are combined with E.P. and oxidation-resistant additives that further enhance gear protection. Petron Gear Shield P is the open gear lubricant of choice for mills and kilns in grinding and indurating processing. It is also the product of choice in the power generation and cement industries where elevated heat is encountered on a regular basis.

Features & Benefits of Petron Open Gear Lubrication

  • High Viscosity, semi synthetic gear oil fluid designed to lubricate heavily loaded open gears.

  • Semi synthetic gear oil, Anti-wear and extreme pressure additives provide unparalleled protection in the most heavily loaded zones of gear tooth mesh.

  • Designed for auto-lube systems, sump, or bathtype lube systems.

  • No build-up in gear tooth roots.

  • Drains freely from gear guards.

  • Pumps freely down to 15º F/-9º C.

  • Environmentally friendly open gear grease. Does not contain chlorinated solvents or lead and is free of all carcinogens.

  • Excellent for elevated temperatures such as kilns and driers

Open Gear Shield Synthetic

Gear Shield® Synthetic, Petron heavy-duty open gear lube represents a new generation of open gear lubricants for the heavy industry following in the footsteps of a long-proven family of Petron open-gear lubricants open gear. It is a semi-transparent synthetic open gear lubricant that provides a tenacious film on the working flanks of gear teeth on any open gear application allowing the lubricant film to be seen. It is one of their best synthetic open gears provides superior separation of gear teeth in the heaviest load zone of gear tooth mesh. The base fluids are formulated with anti-wear additives, corrosion inhibitors, and extreme pressure additives that further enhance its protective qualities, to function as heavy-duty open gear lube. It is an excellent choice for mills and kilns in Mineral processing, Power Generation, Steel, and Cement industries. Transparent synthetic high viscosity open gear lubricant for mills designed to be sprayed through all automatic lubrication equipment. Synthetic exceeds OEM and AGMA base oil viscosity requirements for open gear lubricants applied by intermittent spray application.

Features & Benefits - Best Synthetic Gear Lube

  • A semi-transparent synthetic fluid designed to lubricate heavily loaded open gears

  • Anti-wear and extreme pressure additives provide excellent protection in the most heavily loaded zones along the pitch-line of gear tooth flanks

  • Optimum consumption values as per AGMA & OEM guidelines

  • Industry-leading FZG wear test result

  • No build-up in gear tooth roots and drains freely from gear guard

  • Pumps freely down to 0°F (-18°C). For colder applications heating may be required Environmentally friendly

Kiln Lube 300 for Open Gears

Petron Kiln Lube 300 is used for Kiln Girth Gear extreme pressure lubrication applications. This engineered high performance Petron Kiln Lube is designed for slow-moving open gear drives on stationary rotating machinery found on kilns, dryers, and digesters operating at both low and elevated temperatures.

Petron Kiln Lube 300 is a high viscosity, synthetic open gear grease type lubricant designed for use in sump or bath-type applications. Its unique formulation provides the needed high viscosity protection at elevated operating temperatures yet stays fluid at cooler temperatures when equipment is down, aiding in trouble-free startups.

This is an Engineered (specialty) Lubricant, in which the addition of a proprietary blend of extreme pressure gear oil additives and friction modifiers contribute further to the separation of gear teeth during the sliding motion encountered on slow-moving gears. Petron Kiln Lube 300 has been designed for kiln open girth gear lubrication, with special oxidation-resistant additives to provide extended drain intervals.

Features & Benefits of Petron Kiln Girth Gear

  • High viscosity synthetic lubricant designed for use at both low and elevated temperatures.

  • Extreme pressure additives and friction modifiers aid in gear tooth separation at slow speeds.

  • This open gear grease type lubricant stays fluid at cooler temperatures when equipment is down aiding in trouble-free startups.

  • Oxidation-resistant additives provide extended drain intervals.

Aerosol Open Gear Lube

Aerosol open gear lube spray aerosol is a CFC-free, heavy-duty lubricant that forms a tenacious lubricating film. Gear Shield® NC Aerosol is a high-viscosity base fluid combined with E.P. and oxidation-resistant additives further enhancing this protection. The aerosol packing makes it ideal for lubricating gears, chains, wire ropes, and sprockets in a variety of medium to heavy-duty industrial applications.

The Gear Shield® NC Aerosol is very convenient for re-lubricating gear teeth after inspection.

Features & Benefits of Aerosol Open Gear Lube

  • High Viscosity Fluid designed to lubricate heavily loaded open gears.

  • Anti-wear and extreme pressure additives provide unparalleled protection.

  • No build-up in gear tooth roots.

  • Doesn’t contain chlorinated solvents or lead.

Explore our engineered lubricants - greases for demanding cement, mining, steel mills applications — built for enhanced lube film thickness, reduction in wear rate, giving long-term protection to gears.

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