Gear Couplings

Gear Couplings

We offer a wide assortment of Gear Couplings, prepared using optimum quality grades of raw material. Available in fully flexible and half rigid forms, our range of Gear Couplings conforms to defined industry standards. We offer Gear Couplings at the best prices in the market.

Specifications :

  • Available in range of 19 sizes
  • Can transmit torque up to 12,00,000 Nm
  • Accept diameter up to 1250 mm


Construction : Full gear type LFG Lovejoy Flexible Gear Coupling consists of two identical toothed hubs, tow identical flanged sleeves with internal teeth, a gasket, a set of bolts, nuts and lock washers, lube plugs and two oil gears retaining seals over the hubs.

Nomenclature :

  • Forged Hubs with external teeth
  • Forged sleeves with internal teeth
  • Flange Gasket
  • Close tolerance connecting bolts
  • Lubrication Plug


Selection Procedure :

  • Select an appropriate service factor from table given below.
  • Multiply tire rated running power by the service factor This gives Design Power at rated speed (rpm) Convert this to design power at 100 rpm. This is used as a basis for coupling selection.
  • Refer to the rating column and read until the power greater than or equal to the design power al 100 rpm is found. The size of the gear coupling is given angle corresponding first column. Check the max bore capacities. If required bore size is given in the corresponding first column.
  • Check the maximum bore capacities. If required bore size is greater than the max. bore of selected coupling size, the go for higher size meet the required bore.

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Service Factors

Load Driven Equipment Type of Drive Motor or Turbine
Uniform Centrifugal Pumps, Conveyors- Even Loaded, Exciters, Fans and Blowers- Light Duty, Generators-Even Loaded & mixers-Liquid 1
Light Centrifugal Pumps, Generators-Pulsating Load, Grinders, Hydraulic Pumps, Kilns, Line Shafting, Machine Tools, Oscillating Pumps, Textile machinery & Woodworking machine 1.5
Medium Air compressors-Multi-Cylinder, Ball and Rod Mills, Cranes, Elevators, Hoists, Punch Presses, Reciprocating pumps, Shears, Ship Drives & Welding Generators 2
Heavy Air Compressors-single Cylinder, Dredges, Drilling Rings, Mine Machinery, Rolling Mill Drives & Rubber Mixers. 2.5
Extreme Ore Crushers, Bar Stock shears & vibrating conveyors. 3


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