Backlash-free couplings

FLENDER’s backlash-free couplings eliminate any circumferential play, ensuring torsionally rigid and precise torque transmission.

Precision couplings

In drive systems, stable power transmission and precise motion control are crucial, especially in dynamic applications requiring a fast response. BIPEX-S and SIPEX are couplings developed for high positioning precision and reliability, making them ideal for systems that require minimal moment of inertia, misalignment compensation, and vibration damping.

We work with manufacturers and system integrators

We provide proven BIPEX-S and SIPEX backlash-free coupling solutions that ensure reliability and easy installation.

Our offer

Specification
Characteristics
Applications

Size range	available in 10 sizes
Nominal torque (TKN)	0.5 Nm to 655 Nm
Maximum speed	up to 47,500 rpm
Operating temperature range	-50 °C to +120 °C
Materials	hubs made of aluminium or steel; polyurethane elastomeric inserts in various hardness levels

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Backlash-free torque transmission	torque transmission without any backlash, ensuring immediate drive response and high positioning accuracy
Vibration damping	the elastomer insert absorbs vibrations, reducing dynamic loads and improving system performance while providing electrical isolation
Compensation for shaft misalignment	the FLENDER coupling effectively compensates for axial, angular, and radial shaft misalignments
Low moment of inertia	the optimised mass of the coupling enables a dynamic drive response, especially in applications with frequent load changes
Adaptation to the application	interchangeable elastomer inserts with different hardness levels allow the coupling to be tailored to specific requirements

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Machine tools	feed axis drives, drive spindles
Packaging technology	positioning systems, transport systems
Textile machines	precision positioning applications
Chemia i farmaceutyka	transport technologiczny, aplikacje wymagające wysokiej precyzji
Chemical and pharmaceutical industry	process transport, high-precision applications

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Specification
Characteristics
Applications

Size range	available in 20 sizes
Nominal torque (TKN)	0.1 Nm to 5,000 Nm
Maximum speed	up to 15,000 rpm
Operating temperature range	30 °C to +120 °C (optional up to +250 °C)
Materials	hubs made of aluminium; stainless steel metal bellows

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Torsionally rigid, backlash-free	precise torque transmission
Compensation for shaft misalignment	the coupling absorbs axial, radial and angular shaft deviations, reducing loads on the bearings
Low moment of inertia	the design ensures smooth operation of the drive system
Wear resistance	the all-metal construction ensures high durability, zero maintenance and resistance to harsh working environments
Structural flexibility	various mounting options allow adaptation to different drive systems
Stability of the drive system	minimal impact of the coupling on the dynamic properties of the drive system

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	SIPEX miniature series couplings are designed for use with rotary encoders, stepper motors or tachometers
Machine tools	feed axes, precision feed drives
Packaging technology	positioning systems, precision handling
Textile machinery	positioning applications
Chemical and pharmaceutical industry	transport and process control systems
Food industry	filling lines, transport systems