Gearboxes for Vertical Roller Mills

NGC was founded in 1969 and has been publicly listed on the Hong Kong stock exchange since 2007. As the core business of NGC Group, NGC Gears is focused on gearbox & drive technology solutions for wind energy, rail and industrial applications. In pursuit of excellence in the industrial transmission sector, NGC has taken a leadership role by developing multiple ground breaking products and services. Over the years, with an improved product portfolio widely applied in cement processing, metallurgical equipment, rubber & plastic machinery, marine and material handling, NGC has met the demand for...

Contents Introduction Product Overview Technical Features Ratings & Dimensions

Introduction Extreme temperatures, high shock loads and constant exposure to dust and debris present many unique challenges for Vertical Roller Mill (VRM) applications. NGC’s MLX-Series is engineered to address all of these challenges, and deliver reliable operation in a compact, lightweight package that’s easy to install and maintain.

Product Overview NGC’s MLX-Series for Vertical Roller Mills (VRM) feature a unique combination of strength, reliability and durability not available in standard mill drives. Designed to accommodate all different mill types, the MLX-Series is available in two-stage, three-stage and three-stage, double-planetary configurations with power ratings of up to 8,000kW. With thousands of installations around the world, the MLX-Series is proven to perform. X = Option code XX = Gearbox size MLX = Two-stage gearbox for vertical mills X = Option code XX = Gearbox size MLXSD = Three-stage gearbox for vertical...

Technical Features Bevel gears Klingelnberg design bevel gears, made from high-quality, casehardened alloy steel and finished to DIN3995, provide smooth and reliable operation with high load capacity. Cylindrical gears Designed to optimize strength, efficiency and noise characteristics, NGC’s cylindrical gears are made from highquality, case-hardened alloy steel in accordance with ISO1328. Planetary gears Made from high-quality alloy steel and finished to ISO1328, the MLX-Series planetary gears utilize proprietary tooth geometry to increase load capacity. The sun pinion and planet gears are case-hardened...

Ratings & Dimensions: MLX-Series Size of MLX-Series gearbox P / n2 = rated input power / output speed Table 1 MLX-Series gearbox Gearbox Type Ratio Range Fa(1)= Allowable static axial load with hydrodynamic lubrication Fa(2)= Allowable static axial load with hydrostatic lubrication

Ratings & Dimensions: MLXSD-Series Size of MLXSD-Series gearbox P / n2 = rated input power / output speed Table 2 MLXSD-Series gearbox Gearbox Type Ratio Range Fa(1)= Allowable static axial load with hydrodynamic lubrication Fa(2)= Allowable static axial load with hydrostatic lubrication

Ratings & Dimensions: MLXSS-Series Size of MLXSS-Series gearbox P / n2 = rated input power / output speed Table 3 MLXSS-Series gearbox Gearbox Type Ratio Range Fa(1)= Allowable static axial load with hydrodynamic lubrication Fa(2)= Allowable static axial load with hydrostatic lubrication

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