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General technical information on TK frameless motors
The TK series of frameless brushless motors provide the highest torque density available today for direct drive, high performance applications. Unlike traditional torque motrs, TK units have both high torque and high speed capability and thus operate seamlessly both as spindle and table motors.
TK motors consist of separately supplied stator and rotor units suitable for direct assembly inside the structure of the machine. TK motors are three phase, rare earth (Iron Neodymium Boron) permanent magnet units and reach the highest continuous and peak torque density available today, together with high speed and flux control ability over a constant power range up to 10:1.
The rotors use special Phase manufactured magnets with minimized loss factor allowing high speed operation with a thin isotropic rotor.
All rotors are rigid units with mechanical, glue free magnet retention, preloaded carbon fiber sleeve for safe operation even at very high speed.
Rotor are often semi custom units to allow direct coupling to bearings, encoders, brakes.
All TK motors are designed for fluid (water) cooling on the outside of the stator for maximum performance. Conduction/convection cooling is also possible. Constant power operation (flux control) always requires water cooling.
Customized frames with integral cooling or even partial machine subassemblies with bearings and encoders are manufactured on request based on the standard frameless magnetic designs available.
The torque range spans from 10 to 40,000 Nm with maximum diameter 1150mm; above that size, segmented semi custom units are available, currently up to 18 m diameter
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Torque motors produce a high torque which acts proportionally with the current and remains practically constant over the whole of the engine's axis of rotation. With torque of up to 480mNm and angles of rotation of 80°, these are eminently suitable for adjustment tasks such as those effected by throttle valves, AGR valves, or variable turbine configurations in exhaust gas turbochargers. Their contact-free function and the option of installing position sensors gives the user a motive power solution with the assurance of all-round availability and safety.
The products of the series 4000 are at present only available for OEM applications.
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The TORQUECHAMPION® direct drive system is the new highly dynamic drive system from LTi DRiVES for precise, fast and maintenance-free positioning.
* Its short length and lack of gearing means it takes up a minimal amount of space.
* The peak torque of the MIC motor is available up to the maximum speed, making positioning faster.
* The hollow shaft permits simple feed-through of cables, hoses or laser beams through the motor.
* The integrated measurement system with 8,388,608 increments per revolution and single-turn absolute information means no reference running is required.
* The MTC motor is an external-rotor motor. It can be coupled with a high degree of torsional rigidity without gearing directly to the mechanism. This means it has no gear play and suffers no wear, needs to maintenance and offers very high drive dynamics.
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Permanent magnets brushless motors with high torque for direct drive
Based on the idea that a specific range should be elaborated, the FC motors range with high torque for axis without reducer was born in the beginning of the 90'.
This project, supported by the National Agency for Enhancement of Research, led ALXION to develop a range of 7 permanent magnets brushless motors, specially designed for direct drive applications in various industrial environments. The motors exist in 230 Vac and 400V / 460 Vac windings.
Main characteristics
# Permanent torque up to 461 Nm and peak torque up to 1745 Nm
# Possibility to use a hollow shaft up to 70 mm diameter
# Low speed rotation, from 800 to 190 rpm depending on type
# Position signal with high resolution: up to 393612 points per revolution
# High accuracy resolver: +/- 1 arc min
# Optionally: sine / cosine or TTL encoder
Advantages
# No reducer
# No backlash
# High accuracy servo
# Suppression of maintenance
# Simplification of the mechanism
# Noise reduction
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Designed with the aim of addressing new industrial needs, ALXION has created ST low inertia motors range for DIRECT DRIVE allowing acceleration up to 20 000 rad/s². 145 ,190 and 300ST ranges present an outstanding compacity with a continuous torque-to-weight up to 3.7 Nm/Kg and a peak torque-to-weight up to 18 Nm/Kg. ALXION
Main characteristics
Permanent torque up to 235 Nm and peak torque up to 1161 Nm
Possibility to use a hollow shaft up to 75 mm diameter
Three motors technologies:
HP : high precision with cogging torque < 1 % for 145 & 190 ST
SP : standard precision with cogging torque = or < 2 % for 145 & 190 ST
X : high precision with cogging torque < 2 %
Position feedback:
Resolvers: precision ±1 arcmin or ±10 arcmin
SinCos encoders: incremental or with commutation track
ENDAT absolute encoders
HIPERFACE® encoders
Protection degree: IP54
Power and signal connections: Class 6, cables 2 meters length
Avantages
High dynamics
No reducer
No backlash
High accuracy servo
Elimination of maintenance
Simplification of the servomechanism
Noise reduction
Machine optimization and simplification
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Direct Drive STK motors have been designed for being integrated at the heart of servomechanisms with the aim to improve the performances of axis control.
Thus, the use of ALXION's Direct Drive Technology offers adequate solutions regarding the improvement of dynamic performances and accuracy and allows to address applications with demanding constraints on volumes and weights.
Main characteristics
Continuous torque from 14.6 Nm up to 2708 Nm continuous in natural convection depending on size and up to 6100 Nm in fluid cooling.
Six external diameters from 145 mm up to 800 mm.
Internal diameter from 56 mm up to 630 mm.
Various available windings from 30 rpm up to 1500 rpm depending on type.
Advantages
High dynamics
No reducer
No backlash
High accuracy servo
Suppression of maintenance
Simplification of servo-mechanism
Optimization of servo-mechanism costs
Noise reduction
Functional optimization and machine simplification
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K-2 Series AC Torque Motor
Torque: 3.5 to 7.0 oz-in
30R Series AC Torque Motor
Torque: 19 to 25 oz-in
42R Series AC Torque Motor
Torque: 22 to 38 oz-in
48R Series AC Torque Motor
Torque: 32 to 68 oz-in
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Our new bearing-mounted KTY synchronous torque motors set a new benchmark with regard to maximum drive system torque and stiffness, and are also extremely compact. The KTY model series is a useful alternative to geared motors in any application you can think of, and the motors in this model series have sensibly graduated torques ranging from 12 Nm to 240 Nm. This means that direct drive technology is also available in this torque class for the first time, which is convenient for the user. Three different flange sizes are all available in 3-4 lengths in order to meet requirements in the best possible way.
- Extremely good dynamics due to low moment of inertia values.
- High overloading capability
- High positioning accuracy due to high-resolution encoder systems and avoidance of components that are susceptible to play and friction.
- Motors with hollow shaft, full shaft, loose flange and shrink disk available.
- Permissible radial and axial force can be increased if required.
- Optionally available with safety brake (holding brake)
Technical equipment:
- Top quality rare-earth magnets
- Optimized lamination
- Oscillation strength R, oscillation strength S in accordance with DIN VDE 0530-14 (on request)
- Flange dimensions standardized in accordance with DIN 42 677 (special flanges optionally available)
- Flange accuracy in accordance with DIN 42 955
- Full shaft with/without feather key, hollow shaft with shaft end at A and/or B side, shaft with shrink disk or loose flange (on request)
- Protection class IP 65
- Insulation class F
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Torque motor consist of a fixed primary coil unit (stator or primary part) and rotated magnet ring (rotor or secondary part). Torque table consist of synchronous motor with built-in radial-axial (thrust) bearing, incremental sensor and hydraulic brake (optional).
Ruchservomotor JV designed and produced three series of torque motors: torque motors for instrument-industry (series RSM-24, series RSMR-24) and for machine-building industry (series RM-36). The feature of synchronous motors series RSM-24 is small dimensions for low dimensions(profile) position systems.
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Synchronous Motors
Provide rotation at a fixed speed in synchronization with the frequency of the power source. (60 Hz: 1800 r/min)
For applications where the motor's rotation must be kept at a fixed speed, regardless of changes to the load.
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- Torque motor = permanent magnet motor, annular geometry with hollow shaft and rare-earth magnets
- direct drive, high torque at low speed
(no need of gear boxes)
- features: compact, robust, maintenance-free, no wear, no
mechanical clearance, low noise, low cost, motor with excellent control properties , technically comparable with synchron servomotors
- bearings are part of motor or part of customer's machine,
axial self-aligning r earings are optional
- motors available in 3 designs:
A) hollow shaft motor without bearings
B) hollow shaft motor with bearings
(bearing lifetime > 20.000 h)
C) motor with bearings and central shaft
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HT-direct motors are permanent-magnet synchronous motors that can provide high torques at low speeds directly at the driven machine. High efficiencies and good power factors can also be achieved at low speeds as a result of the permanent magnet rotors.
The HT-direct motors are offered as a harmonized system together with SINAMICS drive converters.
The HT-direct motor / SINAMICS drive converter represents a drive solution with a long service lifetime but with low lifecycle costs and high efficiency for applications with low operating speeds.
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DST high-torque synchronous motors
Baumüller offers the DST-range up to 13,500 Nm torque and herewith provides the maximum dynamic in the direct drive technology.
The high-torque synchronous motors for application with maximum torque requirements, such as for:
plastics machines
rotary tables or swivel axis
printing machines
press technology
winders
wire-drawing machines
stretching units
machine tools
woodworking machines
special machines
DST 135-315 - Powerful High-Torque Motors
good smooth running characteristics
high level of efficiency
appropriate for demanding direct drive technology
high torques at low speeds
low noise
water cooling with stainless steel
compact and robust design
smooth housing surface – not easily soiled
permanent field servo motors
degree of protection IP54
encoders: resolver, SinCos-encoder (opt.)
other encoders available on request
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Ever Co. produces high performance stepping motor drives made by (full) digital motion control systems provided with smart logic control, high switching frequency power stages and inputs/outputs resurces as well.
High Torque Hybride Step Motors for heavy duty suitable for:
- Textile applications: loom, circular & linear knitting, ...
- Tooling machinery and robotic applications
- Ceramic applications
- Serigraphic and Flexo printing
MT23AK17015M4V MT34FN47060x8yy MT42FN79110x8yy
Voltage Vdc: 3.30 3.12 4.84
Current A: 1.50 6.00 11.00
Resistance Ohm ± 10%: 2.20 0.54 0.44
Inductance mH: 6.00 mH ± 10% 3.00 mH ± 10% 4.20 mH ± 20%
Holding torque Nm ± 10%: 0.580 8.50 30
Step resolution: 200 200 200
Step Angle: 1,8° ± 5% 1,8° ± 5% 1,8° ± 5%
Diameter mm 56 86 110
Weight kg 0.450 3.8 11.64
Rotor inertia kg.cm² 0.150 2.7 16.2
Detent torque 300 mNm 0.25 Nm 0.75 Nm
Ambient temperature -20 ÷ +50 °C -40 ÷ 55°C -40 ÷ 55°C
Insulation class B 130 B 130 B 130
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Portescap's newest hybrid motor family member, the h3 runs quieter and with less resonance across the entire speed range, assisting to counter the disadvantages typical in step motor systems.
Key Attributes and Characteristics:
- Frame sizes ranging from 42mm to 90mm
- Output speed up to 3,000 rpm
- Step angle of 1.8 degrees
- Hollow shaft version available
-Customization available including shaft, connectors, and sub-assembly
Advantages:
- Larger bearings enable the motor to effectively handle higher side and radial loads
- The full maximization of performance is realized with the enhanced version of the h3 stepper, which delivers up to 40% more torque than the standard version
- Neodymium Iron Boron Magnets - Deliver Optimized Torque Density
- Aluminum Housing - Superior heat dissipation for improved torque output (Patent Pending)
- Retainer and O-Ring - prevent bearing spinout and minimize motor noise
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Lin Engineering's high torque step motors are capable of holding torques up to 920 oz-in based on unipolar ratings. Unipolar and bipolar windings are available to allow for torque and speed to accommodate your application. Lin's high torque motors provide approximately two times more holding torque than standard motors of similar design.
High torque lines are as follows:
4118 Series - Nema 17, 1.8 degree
5718 Series - Nema 23, 1.8 degree
8718 Sereis - Nema 34, 1.8 degree
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Black Bruin motors are at their best in situations where high torque is required and use of other transmission is not reasonable. Hydraulic transmission does not contain axles allowing the frame structure to provide e.g. higher ground clearance and sharper wheel turn angle.
Starting is soft and motion is smooth even at low speed. On the other hand, vehicles equipped with multi speed Black Bruin motors are capable of reaching top speed exceeding 70 km/h.
The motors are used e.g. as wheel hub motors for agricultural, forestry, road building and mining machines.
Black Bruin BB hydraulic motors
• light and compact design
• high torque
• broad speed range
• mechanical freewheeling
• excellent low-speed characteristics
• multiple brake options
Black Bruin BBC hydraulic motors
• excellent efficiency at higg speeds - in both directions
• high pressure level (450bar)
• broader speed range than conventional models
• higher load capacity in smaller size
• variety of mounting options for accessories
• multiple brake options
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