Gear Unit

Series G - Gearbox

The G series of gearboxes are high-quality gearboxes for heavy-duty industrial applications. All mechanical parts are analyzed with state-of-the-art software to guarantee their reliability. The G series is optimized for power density, i.e. to achieve the highest rating at the smallest possible dimensions. But because high power density also means increased thermal load, the new products are provided as standard with various cooling options. Efficiency is further enhanced through the use of high-grade lubricants and seals. Another advantage is the wide range of mounting possibilities: The units can be mounted on any side, directly to the motor flange or to the output flange, greatly simplifying their installation. Because these gear units can be mounted on any side, additional equipment, such as integrated or external forced lubrication or oil expansion tanks are available as accessories. KOLDBAN also offers tailored solutions for specific applications. Our standard range includes reinforced bearing arrangement or extended bearing distance for high radial load or agitator applications, backstops for single-direction applications such as conveyors or elevators, brakes for hoisting or moving applications, and shrink disks for alternating loads. Special solutions for extruder applications are provided for each size and ratio.

  • Model:
  • Monoblock housing design,

  • Mounting from any side,

  • Six different mounting positions from M1 to M6,

  • Standard IEC B5 motor flanges,

  • Cooling and lubrication accessories for specific working conditions,

  • Complete solutions including eldro brake, hydrolic coupling and electric motor on steel base frame,

  • Backstop and elecromagnetic brake solutions,

  • Output shaft options including shrink disk and splines according to DIN5480,

  • Output flange options,

  • Extruder type interchangeable output option from left and right for extruders.


Number of Sizes24
Housing typeSpecific housings for horizontal applications
GearsHelical and Bevel helical (in accordance with DIN)
Stages1, 2, 3 or 4 stage
Reduction Ratios1.25:1 to 450:1 and special ratio's upon request
Nominal output torquefrom 2.9 to 900 kNm
Input speedup to 1800 rpm
Shaft typeSolid or hollow low speed shaft
LubricationSplash lubrication and force lubrication


Application