KTR
KTR - Drive technology, couplings and cooling systems
KTR is a German manufacturer of drive technology with a broad programme of torsionally flexible couplings, safety couplings, clamping sets and cooling and hydraulic components. The products connect the drive and output sides of machines and transmit torque reliably, damp shock loads and compensate for shaft misalignment.
At fluidics-equipment.com you will find KTR series such as ROTEX, BoWex, Poly-Norm, Evolastic and Dataflex plus safety couplings, oil/water coolers and hydraulic reservoirs. As a specialist distributor we advise you on the right coupling size, bore and elastomer hardness for your application.
KTR best sellers
Oil/Water Cooler TAK/TP-F6 - KTR 148660030000
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Dataflex 110 Torque Measuring Shaft complete 110/20000 - KTR 901100007200
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Dataflex 110 Torque Measuring Shaft complete 110/10000 - KTR 901100007100
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Oil/Water Cooler TAK/TP-F4 - KTR 148640030000
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SI Size 5 CPL. FRA-FT-T3 D.70H7 NND set 1320Nm recess on flange side - KTR 635900357001
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SI Size 7 CPL. SR-KT-T4 D.90H7 NND set 6200Nm - KTR 637410459005
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ROTEX 180 Hub Grey Cast Iron (GG), Bore 110 - KTR 021804001100
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ROTEX 180 Hub Grey Cast Iron (GG), Bore 170 - KTR 021804001700
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KTR product series
SI safety couplings
SI Size 7 CPL. SR-KT-T4 D.90H7 NND set 6000Nm - KTR 637410459006
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SI Size 7 CPL. SR-KT-T4 D.95H7 NND set 5000NM - KTR 637410459501
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SI Size 7 CPL. SR-KT-T4 D.95H7 NND set 8800NM - KTR 637410459502
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SI Size 7 CPL. SR-KT-T3 D.110H7 NND set 2250Nm - KTR 637410351103
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SI Size 7 CPL. SR-KT-T4 D.95H7 NND set 6200NM - KTR 637410459503
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SI Size 7 CPL. SR-KT-T4 D.100H7 NND 6885/1-JS9 set 4000NM - KTR 637410451001
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SI Size 7 CPL. SR-KT-T4 D.110H7 NND 6885/3 set 8000NM - KTR 637410451103
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SI Size 7 CPL. SR-KT-T4 D.90H7 NND set 4500Nm - KTR 637410459003
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Choosing the right KTR coupling
Determine the coupling type
The choice of coupling follows the application. Torsionally flexible couplings such as ROTEX and Poly-Norm damp shock loads and compensate for shaft misalignment. BoWex gear couplings transmit high torques with a compact design. Safety couplings protect the drive train by limiting torque in the event of overload.
Size, bore and elastomer
The decisive factors are the torque to be transmitted, the shaft diameter and the operating conditions. Pay attention to:
- Frame size matched to the nominal torque
- Bore diameter and fit of the hub (e.g. pilot bored or finish machined)
- Elastomer hardness of the spider depending on damping and temperature
Cooling and hydraulics
For hydraulic systems, oil/water coolers and reservoirs complete the programme. They dissipate the heat generated in operation and keep the oil temperature within the permissible range, which extends the service life of the system.
Which KTR series fits?
| Criterion | ROTEX | BoWex | SI safety coupling |
|---|---|---|---|
| Type | Torsionally flexible jaw coupling | Curved-tooth gear coupling | Torque limiter |
| Shaft misalignment | Compensation in all directions | Angular and axial misalignment | Depending on version |
| Damping | High, through the elastomer spider | Low, positive locking | Not a primary function |
| Torque | Low to medium | Medium to high | Set limit value |
| Overload protection | No | No | Yes, disengages on overload |
| Typical application | Pumps, drives, fans | Compact drives with high torque | Protection of sensitive drive trains |
KTR at a glance
Frequently asked questions about KTR
What does KTR manufacture?
KTR is a German manufacturer of drive technology. The programme comprises torsionally flexible couplings, safety couplings, clamping sets and cooling and hydraulic components such as oil/water coolers and reservoirs.
What is a ROTEX coupling used for?
ROTEX is a torsionally flexible jaw coupling. It connects two shafts, transmits the torque through an elastomer spider, damps shock loads and compensates for axial, radial and angular shaft misalignment.
Which KTR coupling series are available?
At fluidics-equipment.com you will find ROTEX, Poly-Norm, BoWex and Evolastic among others, plus safety couplings of the SI series. Cooling systems and Dataflex torque measuring shafts are available in addition.
Can I reorder individual hubs or elastomer parts?
Yes. KTR couplings have a modular design, so individual hubs, flange hubs, spiders and elastomer parts can be reordered as spare parts for servicing and maintenance.
How do I find the right coupling size?
The size depends on the torque to be transmitted, the shaft diameter and the operating conditions. Send us these details and we will help you select the frame size, bore and elastomer hardness.
Need advice or a business quotation?
Our team helps you select the right KTR coupling, frame size and version, and with spare parts for your equipment.























