GTW test bench motors and high-speed drive equipment

GTW drive equipment: RigBe test bench electric motors, RunBe gearless direct drives for fluid machinery, precision motorized spindles, and support bearing assemblies.

GTW RigBe high-speed test bench electric motors

RigBe synchronous electric drive motors are engineered for endurance runs on automotive and industrial test rigs operating in continuous S1 duty. The architecture accommodates rotation speeds up to 36,000 rpm while internal thermal control keeps winding and rotor temperatures below 120 °C.

Standard execution across RigBe 22k-6, RigBe 30k-4, RigBe 30k-6, RigBe 35k-4, and 36k-4
Reliable continuous operation under extreme mechanical loads in climatic test cells
Four-pole and six-pole stator windings for direct coupling to industrial inverters
Liquid-cooled motor housing paired with precision ceramic hybrid rolling bearings

GTW RunBe high-speed direct drives for fluid machinery

Gearless high-velocity RunBe electric drive units are engineered for direct integration into industrial compressors, blowers, and expansion turbines. Direct-drive kinematics eliminate mechanical gearboxes, maximizing overall efficiency while significantly extending routine service intervals.

Operating shaft speeds reaching 60,000 rpm for compact centrifugal turbomachinery
Gearless layout eliminates gear backlash and reduces structural acoustic emissions
High-temperature stator insulation withstands harsh industrial operating conditions
Mechanical compatibility with demanding process gases and fluid handling circuits

GTW precision support bearing units for test applications

GTW support bearing units are customized to decouple sensitive instrumentation from parasitic machine vibrations across dynamic testing rigs. The rigid mechanical construction maintains outstanding dynamic stiffness while supporting substantial radial and axial shaft loads.

Optimized raceway geometry engineered to minimize frictional losses and heating
Tailored configurations for operation inside wide-temperature environmental chambers
Integrated sensor pockets for vibration velocity and shaft displacement probes
Precision machined bearing housing with micron-level alignment tolerances

GTW high-velocity spindle units and motorized spindles

GTW motorized spindles integrate a compact synchronous electric drive with matched super-precision rolling bearings. The assembly ensures smooth rotation and dimensional fidelity during high-velocity milling and fine grinding of tough engineering alloys.

Integrated high-resolution angular encoders for closed-loop motion synchronization
Automated continuous thermal monitoring across front and rear bearing assemblies
Multi-stage labyrinth and positive air purge sealing prevent coolant ingress
Dynamic balancing according to rigorous ISO standards for high-speed machining

GTW backlash-free precision couplings and drive adapters

GTW flexible couplings and adapter hubs are engineered to transmit heavy torsional loads across high-velocity test bench drivelines without backlash. The components absorb angular, axial, and radial misalignments while shielding sensitive motor bearings from bending forces.

Exceptional torsional stiffness across disc-pack and metal bellows flexible elements
Low rotational inertia tailored for rapid dynamic acceleration and deceleration cycles
Friction-locking conical clamping sleeves guarantee damage-free shaft mounting
Finite element optimized geometry to eliminate structural fatigue under peak torque

GTW system auxiliary equipment, condition monitoring and bearing service

GTW auxiliary systems encompass automated oil-air lubrication stations, stator thermal conditioning units, and digital vibration monitoring modules. Specialized engineering services provide nonlinear bearing modeling, dynamic balancing, and overhaul of precision assemblies.

Continuous digital temperature monitoring across windings and rolling bearing rings
Modular minimal-quantity oil-air lubrication units for high-speed shaft bearings
Dedicated diagnostic tooling to measure runout and dynamic rotor unbalance
Proprietary simulation algorithms calculating contact stress and bearing fatigue life

GTW engineering background and Schweinfurt manufacturing facility

GTW – Dr. Gebert Technologie und Wälzlager GmbH was established in Schweinfurt, Germany, under the leadership of Dr. Karl Gebert.

Schweinfurt is globally recognized as the historic center of the rolling bearing industry, and GTW combined deep scientific expertise in tribology, bearing kinematics, and electrical engineering to develop high-performance drive units operating at physical limits.

The GTW production facility is equipped with precision machining centers, automated rotor balancing stations, and specialized dynamic testing cells.

The company maintains an integrated technological process spanning three-dimensional simulation of magnetic and thermal fields to final assembly, vibration diagnostics, and full test-bench verification of completed motors.

RigBe high-speed electric drive motors for endurance testing

The RigBe motor portfolio was engineered by GTW in partnership with research specialist ATE to equip advanced automotive and aerospace test rigs.

These motors are optimized for continuous endurance trials on vehicle transmissions, differentials, electric vehicle reductions, and auxiliary assemblies requiring high rotation speeds paired with substantial continuous torque.

The lineup comprises RigBe 22k-6, RigBe 30k-4, RigBe 30k-6, RigBe 35k-4, and the record-setting RigBe 36k-4, reaching shaft speeds up to 36,000 rpm.

Standard four-pole and six-pole stator designs ensure straightforward integration with standard industrial frequency converters, while the modular architecture operates reliably in climate chambers up to 120 °C.

RunBe gearless high-velocity electric drives for fluid machinery

The RunBe series was engineered by GTW for direct mechanical coupling with the impellers of centrifugal compressors, high-pressure blowers, and expansion turbines.

Traditional compression units utilize external mechanical gearboxes that introduce friction losses, demand frequent oil changes, and generate significant structural noise and vibration.

The RunBe direct drive eliminates mechanical gearboxes completely, driving the compressor impeller directly at shaft speeds reaching 60,000 rpm.

This approach maximizes overall system efficiency, reduces operating energy consumption, and extends routine maintenance intervals across demanding continuous fluid processing operations.

Precision rolling support bearing assemblies for test instrumentation

GTW support bearing units are customized to isolate sensitive measurement instruments from parasitic dynamic forces across industrial test rigs. During high-power powertrain testing, dynamic forces can distort signals from torque flanges, flow meters, and shaft displacement transducers.

GTW bearing units are machined with micron-level alignment tolerances using rolling elements with optimized contact profiles.

The assemblies maintain high dynamic stiffness under severe radial and axial forces, preventing vibration transfer to measurement fixtures and ensuring repeatable test results.

High-speed motorized spindles for precision milling and grinding

The spindle division of GTW manufactures high-velocity motorized spindles for precision contour milling, micro-machining, and fine surface grinding of hardened tool steels, titanium alloys, and composites.

GTW spindles integrate synchronous internal motors with vector control, providing steady torque across both low and super-high rotational speeds.

Spindle shafts are supported by hybrid angular-contact bearings featuring silicon nitride ceramic balls. Ceramic rolling elements possess low mass and minimal thermal expansion, eliminating thermal pre-load spikes and ensuring exceptional surface finish quality on machined components.

Backlash-free flexible couplings and complete system accessories

Transmitting substantial torque loads at extreme speeds requires specialized flexible shaft couplings with zero angular backlash. GTW disc-pack and bellows couplings compensate for axial, radial, and angular shaft misalignments, shielding motor bearings from destructive bending moments.

To provide comprehensive condition monitoring across high-speed drivetrains, GTW supplies minimal-quantity oil-air lubrication stations, digital winding temperature sensors, and vibration transmitters.

The company engineering team performs ISO bearing life simulations, dynamic balancing, and routine refurbishment of precision rotating units.

GTW and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of GTW and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.