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Gears & Drive Solutions

Denox® Motor Gearbox Units

Inline main spindle drives combining high power density, compact installation and configurable drive technology.

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Inline Main Spindle Drives For Machine Tools

DESCH Denox® motor-gearbox units are designed to deliver high power density and efficient performance in compact inline drive applications. Combining powerful motors with proven planetary gearbox technology, they provide a reliable, space-saving solution for demanding industrial drive systems.

With a modular design, integrated media routing, and options ranging from standardized to fully customized configurations, Denox® units can be customized to a wide variety of performance and installation requirements. Backed by proven DESCH engineering, the main spindle drives for machine tools are ideally suited for the following applications:

Milling Machines

Machining Centres

Turning & Vertical Lathes

High-Speed Machine Tools

Motor Gearbox Unit Denox® HS

The Denox® HS series consists of multi-stage, hydraulically shiftable motor-gear units engineered for high-power-density main spindle drives. Its compact inline design reduces installation space, improves operating efficiency and lowers maintenance requirements, making it ideal for customized machine tool and industrial drive applications.

  • Two-stage planetary gearbox design
  • Hydraulically switchable gear stages
  • Horizontal and/or vertical installation
Power60 – 140 kW or higher
Rated Torque Range5,500 Nm – 16,000 Nm or higher (S1-100%)
Rated SpeedDepending on motor configuration
Max. Output SpeedDepending on size: 4,000 – 6,000 rpm
Gear RatioAccording to customer requirements
Outer Diameter260 – 400 mm or larger
Denox_Motor_Gearbox_UnitHS_800x800

Motor Gearbox Unit Denox® HSE (BASE-Line)

The Denox® HSE BASE-Line series features preconfigured motor-gear units that combine high availability with a compact, standardized design. Its space-saving inline concept improves main spindle efficiency while reducing maintenance requirements, making it a cost-effective solution for machine tool and industrial drive applications.

  • Stocked core components
  • Compact inline configuration
  • Horizontal and vertical installation
Power40 kW – 88 kW
Rated Torque Range1,250 Nm – 3,325 Nm
Rated Speed1270 – 1535 rpm
Max. Output Speed4500 – 7000 rpm
Gear Ratio1:1 – 1:5
Outer Diameter240 mm – 300 mm
Denox_Motor_Gearbox_UnitHSE_BASE-Line_800x800

Motor Gearbox Unit Denox® HSE (FLEX-Line)

The Denox® HSE FLEX-Line provides the configurable alternative to the standardized BASE-Line. Built around the same compact inline drive concept, the FLEX-Line can be adapted to the machine’s installation situation, media routing and performance requirements.

  • Compact inline drive concept
  • Horizontal and/or vertical installation
  • Variable output-shaft design
  • Different flange designs available
Power40 – 120 kW
Rated Torque Range1,200 Nm – 5,200 Nm (S1-100%)
Rated SpeedDepending on motor configuration
Max. Output SpeedDepending on size: 4,500 – 8,000 rpm
Gear RatioAccording to customer requirements
Outer Diameter260 – 350 mm
Denox_Motor_Gearbox_Unit_HSE_FLEX-Line_800x800

Choosing The Right Gearbox For The Job

There’s a lot to consider when choosing the right DESCH product for your specific application.

Performance Requirements

Power, torque and speed determine the appropriate motor and gearbox configuration.

Key factors to assess include:

  • Required motor power
  • Rated and peak torque
  • Required output speed

Machine Integration

Physical integration is an important part of the selection process.

Inline installation options:

  • Available installation space
  • Horizontal or vertical installation
  • Output flange and shaft configuration

Configuration

Choice between standardized availability and customer specific.

Our options include:

  • BASE-Line: Standardized and pre-configured
  • High availability and stocked core components
  • FLEX-Line: Individually configurable
  • Optional monitoring and cooling systems

Maintain For Longevity

While DESCH products are engineered for long-term performance, appropriate maintenance helps protect reliability, extend service life, and prevent avoidable downtime.

  • Follow the specified lubrication and operating requirements
  • Monitor gearbox temperature and operating conditions
  • Inspect lubrication, cooling and media supply systems regularly
  • Monitor vibration and torque where applicable
  • Address abnormal noise, temperature, vibration or shifting behaviour before it develops into a larger drive issue

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