OPEN GEAR LUBRICANTS

Collaborating with machine manufacturers, BECHEM has developed high performance open gear lubricants that ensure unrivalled wear protection for gear drives. Developed with high quality base oils, BECHEM’s range of greases and high viscous fluids ensure high operational reliability of equipment by withstanding extreme loads for longer duration thereby extending re-lubrication interval.

BECHEM’S range of open gear lubricants are recommended for systems at Ball, Road and SAG mills, Rotary Kilns and Coolers, Hydraulic and Bucket wheel excavators and Draglines, Crushers and Stacker or Re-claimer systems, Cranes, Hoists, Winches, Drags and, Spreaders and Ladles and Dryers etc.

OPEN GEAR LUBRICANTS

Heavy duty Berulit GA series (400 /800 /2500/2500 LV) are specially developed service lubricant devoid of bituminous ingredients or toxic heavy metals for high load applications. With a wide service temperature range, Berulit GA series possess good adhesion and excellent wear protection properties. The graphite based lubricant with high base oil viscosity forms consistent lubricant film under pressure and prevents metal-to-metal contact under high/shock load conditions. The Berulit GA series can be applied through automatic spray systems for large open gear drives operating under heavy loads and high circumferential speeds.

Applications: Berulit GA series are recommended for open gear drives of mixing drums, dryers, ball mills and rotary kilns. It also finds its application in heavily loaded couplings, journal bearing lubrication in forging presses, slew ring gears of converters, drag lines, cranes, crushers and excavators equipped with central or spray lubricating systems. Suitable as noise dampening grease in two wheeler starter motor mechanisms.
Please consult a BECHEM Application Engineer for selection of the suitable grade of ‘Berulit GA’ series for your application.

ProductThickenerBase OilTemp Range °CSend Your Queries
Berulit GA 400

  • High
    loads
  • High temperature
  • open gears
  • Plain bearings
  • Chains
  • Wire ropes
Aluminium-complex soapMineral oil-20 °C to +180 °C
ProductThickenerBase OilTemp Range °CSend Your Queries
Berulit GA 800

  • High
    loads
  • High temperature
  • open gears
  • Plain bearings
  • Chains
  • Wire ropes
Aluminium-complex soapMineral oil-10 °C to +180 °C
ProductThickenerBase OilTemp Range °CSend Your Queries
Berulit GA 2500

  • High
    loads
  • High temperature
  • open gears
  • Plain bearings
  • Chains
  • Wire ropes
  • Corrosion protection
Aluminium-complex soapMineral oil/synthetic oil+5 °C to +200 °C
ProductThickenerBase OilTemp Range °CSend Your Queries
Berulit GA 2500 LV

  • High
    loads
  • High temperature
  • open gears
  • Plain bearings
  • Chains
  • Wire ropes
  • Corrosion protection
Aluminium-complex soapMineral oil/synthetic oil+5 °C to +200 °C

Advanced range of high viscous service lubricant that is devoid of solid lubricants and can be applied by spraying or dipping systems. Offering superior wear resistance, Berugear HV series are extremely adhesive and form pressure resistant film that do not harden or break. The bitumen and heavy metal free lubricant reduces consumption and extends lubrication intervals. Available in varying base oil viscosities.

Applications: Berugear HV series are recommended for open gear drives of ball mills, rotary kilns, rotary barrel mixers and dryers with high width to diameter ratio. Please consult a BECHEM Application Engineer for selection of the suitable grade of ‘Berugear HV’ series for your application.

ProductBase oilViscosity [mm2/S]
at 40 °C
Flash point °CSend Your Queries
Berugear HV 20

  • High loads
  • Noise damping
  • open gears
  • Plain bearings
Mineral oil/Synthetic oil18,500≥ 160
ProductBase oilViscosity [mm2/S]
at 40 °C
Flash point °CSend Your Queries
Berugear HV 10

  • High loads
  • Noise damping
  • open gears
  • Plain bearings
Mineral oil/Synthetic oil 10,000≥ 150

BENEFITS FOR YOUR APPLICATION

OEM Approved Open Girth Gear Lubricants

  • Priming, repair and running-in lubricants
  • Graphite based services lubricants
  • Viscosity of 490 cSt, 1050 cSt and 2500 Cst
  • High viscous semi-synthetic transparent lubricant Viscosity of 17800 Cst.

Performance Lubricants for Specialised Areas

  • Roller press grease
  • Kiln tire lubrication
  • Motor bearing grease
  • Synthetic (Polyglycol and Polyalfaolefin) gear oils
  • Multipurpose grease for cooler and pre-heater fan bearing

OUR CEMENT PLANT EXPERTISE

Get the Edge, Experience BECHEM’s Proven Technical Services

  • Vibration reduction assessment of pinion counter shaft bearings.
  • Periodic monitoring of equipment evidenced by comprehensive and regular inspection reports.
  • Ensure efficient functioning of spray systems even in harsh temperatures.
  • Specialised consultancy for mechanical alignment
  • Programme ensure training of maintenance engineers for preventive measures and troubleshooting
  • Experienced and dedicated team supported by wide distribution network.
    Benefit from vast knowledge repository and global best practice.
  • Instant gear refurbishment by skilled technicians
  • Pitting dressing, wear steps and undulation removal, removal of fins etc.

FREQUENTLY ASKED QUESTIONS

Greases are made by mixing a solid material, called a thickener, with a base oil and property enhancing additives; but it’s the oil that forms the lubrication film. For better understanding, grease thickener can be thought of as a sponge saturated with oil. Moving parts squeeze the oil out of the sponge like thickener for forming the lubrication film. Typically, the base oil constitutes the largest proportion of grease weight at about 80-90%, followed by thickener at 10 to 20% and additives under 10%.

Dropping point of a lubricating grease is an indicator of the heat resistance of the grease. and is the temperature at which the grease is no more a thickened lubricating medium. The dropping point indicates the upper temperature limit at which a grease retains its structure, not the maximum temperature at which a grease may be used.

Few greases have the ability to regain their original structure after cooling down from the dropping point.

The most important feature of a grease is its consistency. A grease that is too stiff may not get pumped into areas requiring lubrication. While a grease that is too fluid may leak out. Grease consistency depends on the type and amount of thickener used and the viscosity of its base oil. A grease consistency is its resistance to deformation by an applied force.

The measure of consistency is called penetration. Penetration depends on whether the consistency has been altered by working. Standard test procedures established by American Society for Testing and Materials International (ASTM) and accepted by industry are ASTM D 217 and D 1403, measure penetration of unworked and worked greases.

The NLGI has established consistency numbers ranging from 000 to 6, corresponding to specified ranges of penetration distance of the standard cone into the test grease. Table below lists the NLGI grease classifications along with a description of the consistency of each classification.

Viscosity: It is a measure of resistance to flow of a lubricating oil.

Viscosity index: It is defined as rate of change of viscosity with respect to temperature.

Significance:

  • It is the most important property which determines the performance of lubricating oils under the influence of temperature
  • A lubricating oil should have sufficient viscosity to retain a lubricating film on the surface
  • On machine part moving at slow speeds under high pressures, a high viscous oil should be used as it better resists being squeezed out from between the rubbing parts.  Light oils can be used for lower pressures and high speeds.
  • It is not possible to maintain a liquid oil film between two moving or sliding surfaces if the viscosity is too low and hence excessive wear will occur.

The pour point of an oil is the minimum temperature at which the oil turns into semi solid and almost losses its flow characteristic. At low temperatures, the viscosity of the oil will be very high, causing the oil to resist flow. This is important in equipment that operates in a cold environment or handles cold fluids.