LINNIG
Belt Drive Systems
Enhancing engine efficiency with advanced belt management
Trust the Original – LINNIG Belt Drive Systems
A look under the engine bonnet of your bus or coach will reveal several LINNIG components in the areas of engine cooling, air conditioning and belt management.
State-of-the-art technology provides for quiet running in the engine compartment. By deploying deflection and tension rollers, with or without damping function, as well as the torsional vibration damper, belt-management systems are tailored to customer requirements.
Trendsetting.
Intelligent.
Efficient.
Experience next-level efficiency and reliability with our high-performance belt drive systems. Engineered for modern drive technology, ISO 9001 & 14001 certified, and made in Markdorf, Germany.
99.5%
Efficiency
>95%
Vibration isolation
100%
Extended service
life of FEAD
components
300Nm
Maximum
transmissible
torque
Decouplers
Enhancing engine efficiency and reducing vibration for hybrid and diesel applications
Thanks to LINNIG’s decoupling system, buses and trucks experience a new dimension of smooth belt drive. Our technical solutions support increasing hybridization, downsizing, and reduced displacement, as well as downspeeding and efficient low-speed operation. We also enhance performance under higher compression and injection pressures.
Diesel engines run unevenly – especially in the lower speed range – causing high levels of vibration at the crankshaft. These vibrations are transmitted via the drive belts to the auxiliary units, such as the A/C compressor and the fan drive. The consequences are noise emissions, wear and fastening problems as well as increased energy consumption. This is where the LINNIG decoupler LDD comes in. It ensures smooth running in the engine compartment, while increasing the service life of the auxiliary units and improving energy balance! The LINNIG LDD eliminates 99.5% as a decoupler and only 0.5% as a crankshaft damper.
Optimum vibration reduction at the alternator
In the future, the problem will increase even more with the use of mild hybrid systems. Thanks to its flexible installation, the torsional vibration decoupler can be used for a variety of arrangements in the engine compartment.
The LINNIG decoupling system enables a double effect on the crankshaft pulley, based on the following two elements:
- Permanent magnets effect a more progressive and smooth “decoupling” function when transmitting power in the operating range of the FEAD
- Special rubber dampers serve as a buffer to enable the full force transmission of maximum torque
Benefits at a glance
- Extended Component Lifetime
Increased lifespan of belts and accessories - Improved Efficiency
Reduced fuel consumption and CO₂ emissions by lowering belt tension - Reliable Performance
Ensuring continuous belt tension with no slippage or flapping, even in extreme conditions - Easy Installation
Plug-and-play replacement with no additional modifications required - Maintenance-Free Operation
No self-heating, no losses, and no friction for long-term reliability
Technical specifications
Decouplers
Max. decoupling torque:
300 Nm
Max. diameter:
350 mm
Max. length:
120 mm
Ambient temp. limit:
-40°C short time; 120°C durable; 135°C short time
Max. temporary ambient
radial load:
5000 N
Ambient radial load:
2800 N
Tensioner pulleys with integrated decoupling system
Significant noise reduction
Significant noise reduction – The function of LINNIG’s tensioner pulleys with integrated decoupling system is to reduce noise in the mechanical drive. LINNIG’s technology plays an important role in the area of noise reduction: our idlers with integrated decoupler will keep noise well below the sound emission reference values.
With our system, you decouple the belt drive from the gear drive. This prevents the gear wheel teeth from rattling. This is very important, especially at idling speed. This product is mainly used in mechanical fan drives. Vibrations generated by the crankshaft and transmitted via the belt can be eliminated by up to 95%. This minimizes noise emissions and losses in the mechanical drive.
Benefits at a glance
- Power transfer optimization
- Significant noise reduction in the mechanical drive
- Practically vibration-free belt running
- High flexibility
- Reducing drivetrain wear for maximum durability and efficiency
Technical specifications
Tensioner pulleys with integrated decoupling system
Permissible ambient temperature:
– 30 °C to +110°C (optionally down to -50°C)
Max. input speed:
3000 rpm
Max. torque:
200 Nm
Idler pulleys
Optimization for your engine-compartment
The function of LINNIG’s idler pulleys is to carry the belt in the belt drive and enable a flexible drive layout with sufficient wrap angles for the individual driven units.
LINNIG’s idler pulley plays an important role in engine-compartment optimization. The set themselves apart with their high flexibility: depending on the design and arrangement of the drive train, Solero Technologies – together with the customer – will develop an optimized belt-management system that lives up to individual customer requirements. Our double-row idler pulleys (Idler) fulfil this demand with a robust, lifetime lubricated and sealed construction. Our idler pulleys are used in buses and off-highway applications because they meet the strict requirements.
Benefits at a glance
- Quiet & Efficient
Low-noise, low-friction belt drive - Durable & Maintenance-Free
Lubricated and sealed for life - Flexible Design
Adaptable to various applications - Heat Resistant
Suitable for high-temperature environments - Reliable Performance
Replaceable, double-row ball bearings for extended lifespan
Technical specifications
Idler pulleys
Permissible ambient temperatur:
– 30 °C to +110°C (optionally down to -50°C)
Permissible radial forces:
2,500 N
Max. permissible radial forces (short-term) during starting/stopping:
2,900 N
Max. permissible speed (short-term):
6,000 – 7,000 rpm
Downloads | Certificates & Brochures
Discover further LINNIG products
LINNIG A/C Compressor Clutches
Electromagnetic clutches boost AC efficiency: For bus & coach.
LINNIG Engine-Cooling Systems
E-controlled fan clutches: Efficient cooling, lower fuel consumption.
LINNIG Auxiliary-Drive Clutches
Precise control of vehicle and machinery components: In tough conditions.
LINNIG Shutting-Speed Regulators
Automatic locking and closure in emergencies: Fire protection saves lives.
Contact us!
Take a look at our comprehensive list of international Solero Technologies sales partners for LINNIG spare parts or contact our sales team directly for personalized support.
