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UHT Torque Motors – Ultra High Torque, Minimal Installation Space | CYTEC
Ø D 218–620 mm FRAME SIZES 200–565
ROTOR PERMANENT MAGNETS
MMAX 210–13,010 Nm MN 113–7,425 Nm
LIQUID COOLED REDUCED HEAT LOSS
SERIES UHT / ALL-ROUNDER HT / HIGH TORQUE HS / HIGH SPEED
nMAX UP TO 1,300 rpm HIGH SPEED & HIGH TORQUE
STATOR HIGH-DENSITY WINDING
HOLLOW SHAFT Ø 127–410 mm MEDIA FEED-THROUGH
Series Code UHT / Ultra High Torque HT / High Torque HS / High Speed
Torquetec · UHT Series

UHT Torque Motors More torque. Less installation space.

UHT stands for Ultra High Torque – a motor generation consistently designed for maximum torque density and minimal space requirements.

Unlike conventional permanent-magnet synchronous motors, UHT torque motors do not need to reach high speeds. Their electromagnetic design is specifically optimized for demanding swivel and positioning movements with high torque. Unnecessary speed reserves are deliberately omitted – in favor of a significantly more compact design.

The motor hardware is reduced to the functional minimum. This frees up valuable installation space inside the axis – for example for standard axial-radial combination bearings, measuring systems or media feed-throughs.

Despite their extremely compact dimensions, UHT motors achieve – depending on frame size and design – around 30 to 35 percent higher torque than conventionally designed permanent-magnet synchronous motors of comparable size.

The result is a highly integrated drive solution for compact swivel axes: maximum torque with minimal installation space.

UHT torque motor CAD rendering - rotor and stator kit
UHT Series · Thermal Design

Engineered for Stable Temperatures

Torque density is ultimately limited by heat – which is why the thermal behaviour of every UHT frame size is analysed as carefully as its electromagnetic design.

The thermal simulation shows where losses occur and how heat travels from the winding through the lamination stack into the surrounding structure. Because the UHT design minimizes losses at the source – high copper fill factor, optimized lamination geometry, no unnecessary speed reserves – less heat is generated in the first place.

The result is a stable temperature level under continuous load: the usable continuous torque stays high, and neighbouring precision components such as bearings and measuring systems remain within their specified range.

Thermal simulation of a UHT torque motor - temperature distribution
UHT Torque Motor

The Advantages at a Glance

UHT / 01

Ultra High Torque

Exceptionally high torque for demanding swivel and positioning tasks.

UHT / 02

Consistently Compact

No unnecessary speed reserves – motor hardware reduced to the essentials.

UHT / 03

More Design Freedom

Additional space for high-performance axial-radial bearings and further axis components.

UHT / 04

High Integration Density

Motor, bearings and mechanics combine into one particularly compact, powerful unit.

UHT / 05

Up to 35% More Torque

Significantly higher torque density than conventional permanent-magnet synchronous motors of comparable frame size.

One Family · Three Characteristics

UHT · HT · HS

UHT / ALL-ROUNDER

Ultra High Torque

The all-rounder of the family: maximum torque density in the most compact envelope – the first choice for compact swivel axes where every millimetre counts.

HT / HIGH TORQUE

Maximum Force

The RMHT variants push torque to the limit – up to 13,010 Nm peak torque (RMHT-565). Built for heavy swivel axes and rotary tables where force matters more than speed.

HS / HIGH SPEED

Maximum Dynamics

The RMHS variants are wound for speed – up to 1,300 rpm (RMHS-240) with all frameless direct-drive benefits intact. For dynamic positioning and milling applications.

Torquetec

Technical Data

Technical Data

UHT Series Ultra High Torque – the all-rounder

UHT torque motor dimension drawing

UHT 200

TypedmmDmmLmmMMAXNmMNNmM0NmnMAXrpmnNrpmIMAXAINA
200-040 UHT12721862,64210113799365202511
200-200 UHT127218222,641120605424424,82366529

UHT 240

TypedmmDmmLmmMMAXNmMNNmM0NmnMAXrpmnNrpmIMAXAINA
240-050 UHT16026278,065012892024232353115
240-075 UHT160262103,06703415290284,41583115
240-150 UHT160262178,061406860602122,4683116
240-225 UHT160262253,0622871427999167,4936232

UHT 310

TypedmmDmmLmmMMAXNmMNNmM0NmnMAXrpmnNrpmIMAXAINA
310-050 UHT22021877,1972552387194,41083215
310-100 UHT220218127,11914115280682,8463217

UHT 360

TypedmmDmmLmmMMAXNmMNNmM0NmnMAXrpmnNrpmIMAXAINA
360-040 UHT26538266,088074212995132855425
360-050 UHT26538276,0810135473883962205426
360-080 UHT265382106,0815299206582431355128
360-100 UHT265382126,08192611838401891055129
360-125 UHT265382151,08239314961062144805129
360-150 UHT265382176,08288918181291113,4635130

UHT 410

TypedmmDmmLmmMMAXNmMNNmM0NmnMAXrpmnNrpmIMAXAINA
410-075 UHT32044399,08273015171062140,4786530
410-100 UHT320443124,08314220721451140,4787140
410-125 UHT320443149,08411425751802108607842
410-150 UHT320443174,0846893106217586,4487141
Technical Data

RM 240 RMHS / RMHT frame size 240

RM 240 torque motor dimension drawing

RMHS-240 HS / High Speed

TypedmmDmmLmmMMAXNmMNNmM0NmnMAXrpmnNrpmIMAXAINA
240-050 HS14527286,4433016812013006754623
240-075 HS145272111,444992801919004354725
240-100 HS145272136,446813932648003204826
240-125 HS145272161,448825063367002505026
240-150 HS145272186,4410976204106002055227

RMHT-240 HT / High Torque

TypedmmDmmLmmMMAXNmMNNmM0NmnMAXrpmnNrpmIMAXAINA
240-050 HT14527286,443861981395583102713
240-075 HT145272111,44595313220352,81962813
240-100 HT145272136,448174323032521402914
240-125 HT145272161,441058552387192,61073014
240-150 HT145272186,441316671470151,2843115
240-175 HT145272211,4414707825482971656229
240-200 HT145272236,4416799006302521406230
240-225 HT145272261,44195810227152161206530
Technical Data

RM 310 RMHS / RMHT frame size 310

RM 310 torque motor dimension drawing

RMHS-310 HS / High Speed

TypedmmDmmLmmMMAXNmMNNmM0NmnMAXrpmnNrpmIMAXAINA
310-075 HS16534211010555914098204607239
310-100 HS16534213514658415827003907542
310-125 HS165342160189610907535803207644
310-150 HS165342185235213519355002657746

RMHT-310 HT / High Torque

TypedmmDmmLmmMMAXNmMNNmM0NmnMAXrpmnNrpmIMAXAINA
310-075 HT16534211012356754683281804019
310-100 HT16534213517189396632521404120
310-125 HT165342160222412048492041134220
310-150 HT165342185275314741046180984321
Technical Data

RM 410 RMHS / RMHT frame size 410

RM 410 torque motor dimension drawing

RMHS-410 HS / High Speed

TypedmmDmmLmmMMAXNmMNNmM0NmnMAXrpmnNrpmIMAXAINA
410-125 HS27547015544502545176046027010057
410-150 HS27547018055053150218038022510661

RMHT-410 HT / High Torque

TypedmmDmmLmmMMAXNmMNNmM0NmnMAXrpmnNrpmIMAXAINA
410-125 HT2754701555218298420933682167138
410-150 HT2754701806495371326053041787540
Technical Data

RM 565 RMHS / RMHT frame size 565

RM 565 torque motor dimension drawing

RMHS-565 HS / High Speed

TypedmmDmmLmmMMAXNmMNNmM0NmnMAXrpmnNrpmIMAXAINA
565-150 HS41062018083854780330635620810358
565-200 HS410620230107206115430828016410861

RMHT-565 HT / High Torque

TypedmmDmmLmmMMAXNmMNNmM0NmnMAXrpmnNrpmIMAXAINA
565-150 HT41062018010250585041732961727240
565-200 HT41062023013010742552872331357742

UHT – when every newton metre and every millimetre counts.

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