H B YSTERESIS RAKES

HYSTERESIS BRAKES
Metric Product Guide
Providing Technical Solutions to Your Tension Control Problems
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Frictionless
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Longer Expected Life
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Superior Repeatability
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Less Maintenance
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Less Downtime
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Magtrol - Pioneers in Hysteresis Torque Control
Founded in 1953, Magtrol, Inc. pioneered the technology of applying the principles of magnetic hysteresis to meet the critical
needs for reliable, smooth and adjustable torque control. This pioneering effort led to the development of Magtrol’s Hysteresis
Brake and Clutch products, which feature superior torque repeatability, longer expected life, a broad speed range and lower
operating costs. A leading edge company, Magtrol serves a wide array of torque and tension control applications and continues
to develop innovations in hysteresis technology, most notably our recently introduced Matched Hysteresis Brake line.
This catalog covers our standard metric brake offerings. Additional Brake and Clutch products are currently offered in
standard inch dimensions but can be modified to meet metric requirements. For more details and information, please contact
your local representative or Magtrol directly.
Operating Principles of Hysteresis Brakes ....
page 1
Advantages & General Applications .. pages
2-3
Hysteresis Brakes and Applications
... pages
Applications...
4-5
Large Bore Brakes and Applications . pages
6-7
Matched Brakes and Applications ..... pages
8-9
How to Select a Hysteresis Brake .. pages
10-11
Specials Designs and Modifications ...
page 12
Accessories and Other Products
.........
Products.........
page 13
Operating Principles of Hysteresis Brakes
Overview
Control
The hysteresis effect in magnetism is applied to torque
control by the use of two basic components - a reticulated
pole structure and a specialty steel rotor/shaft assembly fitted together but not in physical contact. Until the pole
structure is energized, the drag cup can spin freely on its
shaft bearings. When a magnetizing force from either a
field coil or magnet is applied to the pole structure, the air
gap becomes a flux field and the rotor is magnetically
restrained, providing a braking action between the pole
structure and rotor.
In an electrically operated Hysteresis Brake, adjustment and
control of torque is provided by a field coil. This allows
for complete control of torque by adjusting DC current to
the field coil. Adjustability from a minute value (bearing
drag) to a maximum value of 15-35% above rated torque is
possible.
The amount of braking torque transmitted by the brake is
proportional to the amount of current flowing through the
brake coil. The direction of current flow (polarity) is of no
consequence to the operation of the brake. For best torque
regulation, a DC supply with current regulation is
recommended. This will help to diminish torque drift
attributable to changes in coil temperature and in-line
voltage, which can otherwise result in changes in coil
current, and consequently in torque ratings.
Because torque is produced strictly through a magnetic air
gap, without the use of friction or shear forces, Hysteresis
Brakes provide operating characteristics such as:
•
•
•
•
•
•
•
Absolute Smoothness
Torque Independent of Speed
Total Adjustability
Long, Maintenance-Free Life
Highest Degree of Repeatability
Quiet Operation
Stability
Please see the following pages for an outline of the many
advantages of utilizing hysteresis devices in your torque
and tension control applications. For application
assistance, please contact your local representative or
Magtrol directly.
1
Advantages of Hysteresis Devices
Unlike many other torque control devices, Magtrol Hysteresis Brakes provide absolutely smooth, infinitely controllable
torque loads, independent of speed, and they operate without any physical contact of interactive members. As a result, with
the exception of shaft bearings, there are no wear components. This provides such advantages as: longer expected life,
superior torque repeatability, life cycle cost advantages, broad speed range, excellent environmental stability, and superior
operational smoothness.
Longer Expected Life
Superior Torque Repeatability
Magtrol Hysteresis Brakes produce torque strictly through
a magnetic air gap, making them distinctly different from
mechanical-friction and magnetic particle devices. Because
hysteresis devices do not depend on friction or shear forces
to produce torque, they do not suffer the problems of wear,
particle aging, and seal leakage. As a result, hysteresis
devices typically have life expectancies many times that of
friction and magnetic particle devices.
Because torque is generated magnetically without any
contacting parts or particles, Hysteresis Brakes provide
superior torque repeatability. Friction and magnetic particle
devices are usually subject to wear and aging with resultant
loss of repeatability. Magtrol devices will repeat their
performance precisely, to ensure the highest level of process
control.
Life Cycle Cost Advantages
Broad Speed Range
While the initial cost of hysteresis devices may be the same
or slightly more than that of their counterparts, the high
cost of replacing, repairing and maintaining friction and
magnetic particle devices often makes hysteresis devices
the most cost-effective means of tension and torque control
available.
Magtrol hysteresis devices offer the highest slip speed range
of all electric torque control devices. Depending on size,
kinetic power requirements and bearing loads, many Magtrol
Brakes can be operated at speeds in excess of 10,000 RPM.
In addition, full torque is available even at zero slip speed
and torque remains absolutely smooth at any slip speed.
Excellent Stability
Operational Smoothness
Magtrol hysteresis devices can withstand significant
variation in temperature and other operating conditions. In
addition, because they have no particles or contacting active
parts, Hysteresis Brakes are extremely clean. Magtrol
devices are used in food and drug packaging operations, in
clean rooms, and environmental test chambers.
Because they do not depend on mechanical friction or
particles in shear, Hysteresis Brakes are absolutely smooth
at any slip ratio. This feature is often critical in wire drawing,
packaging and many other converting applications.
Hysteresis Brakes are often confused with magnetic particle brakes and eddy current brakes, both of which operate
and perform differently than Hysteresis Brakes.
Magnetic Particle Brakes
Eddy Current Brakes
Unlike Hysteresis Brakes, magnetic particle brakes have a free flowing
metal powder in the air gap. When a magnetic particle brake is energized,
the particles form chains along the magnetic field lines linking the rotor
to the housing. As the rotor rotates, the chains continuously shear,
generating torque and heat. While magnetic particle brakes are capable
of producing high torque, the friction between the particles can result in
poor stability and repeatability, along with a high residual drag.
Eddy current brakes develop torque by
the direct magnetic linking of the rotor
to the stator. This linking generates
eddy currents in the driven rotor. Eddy
current brakes must have a slip between
the rotor and the stator to generate
torque.
2
General Applications
Magtrol Hysteresis Brakes offer
frictionless, non-breakaway force
for tensioning materials during
slitting and many other material
processing operations.
Magtrol Hysteresis Brake used for holding of backdriving load.
Magtrol Hysteresis Brakes are widely used in
load simulation applications for life testing on
electric motors, actuators, small gas engines,
gearboxes, and many other rotating devices
and assemblies.
3
HYSTERESIS BRAKES
Pure Hysteresis Brakes produce torque strictly through a
magnetic air gap without the use of magnetic particles or friction
components. This method of braking provides far superior
operating characteristics (smoother torque, longer life, superior
repeatability, high degree of controllability, and less
maintenance and down time) which make them the preferred
choice for precise tension control during the processing of nearly
any material, web or strand.
Ratings
Kinetic Power Ratings Drag Torque External
Angular
Model
Min. Torque at Rated
Res. at
VDC* Watts Max.
(Watts)
De-energized Inertia Acceleration Weight
Rated Current Current 25 oC ±10%
(Nom.) (Nom.) RPM
Rad/Sec 2
Kg
Nm
mA
Ohms
Intermittent Continuous
Nm
kgcm2
HB-3M-2
0,02
145
171
25
3,59 20000
20
5
3,53 x 10-4 0,0043
46600 0,108
16100 0,222
HB-10M-2
0,07
133
180
24
3,18 20000
35
8
7,06 x 10-4 0,0435
HB-20M-2
0,14
217
120
26
5,60 20000
50
12
7,77 x 10-4 0,0458
30600 0,290
HB-50M-2
0,35
251
95
24
5,98 15000
90
23
1,55 x 10-3 0,1670
21000
0,78
HB-140M-2
1,00
252
95
24
6,03 12000
300
75
5,42 x 10-3
1,00
1000
1,85
HB-250M-2
1,75
250
96
24
6,00 10000
450
110
7,77 x 10-3
3,45
5070
3,50
HB-450M-2
3,20
300
80
24
7,20 8000
670
160
1,51 x 10-2
7,50
4250
5,86
14,50
3450 12,85
HB-750M-2
5,00
380
60
23
8,70 7000
1000
200
5,00 x 10-2
HB-1750M-2
13,00
600
48
28 17,30 6000
2400
350
9,18 x 10-2
62,50
2080 24,50
2080 50,00
HB-3500M-2
26,00
1200
24
28 34,60 6000
4800
700
1,36 x 10-1 125,00
BRAKE
MODEL
* 12 volt, 90 volt and non-standard coil voltages are available.
Dimensions (mm)
MODEL
HB-3M-2
HB-10M-2
HB-20M-2
HB-50M-2
HB-140M-2
HB-250M-2
HB-450M-2
HB-750M-2
HB-1750M-2
HB-3500M-2*
A
31,8
45,7
50,0
60,0
92,0
112,7
137,7
158,0
226,0
226,0
B
3,00
5,00
5,00
7,00
10,00
12,00
15,00
17,00
25,00
25,00
C
10,00
14,00
14,00
17,00
22,00
28,00
32,00
35,00
52,00
N/A
D
0,4
0,2
0,4
0,6
0,8
0,7
0,9
0,9
1,1
N/A
E
2,0
2,4
2,5
2,0
2,5
4,0
3,5
4,0
6,0
N/A
F
18,6
20,7
23,5
39,7
39,0
50,5
52,4
73,0
76,2
152,4
G
42,0
54,8
56,0
76,5
100,0
123,0
131,5
176,0
212,0
312,0
* Contact Magtrol for drawing.
4
H
8,0
12,7
13,0
15,0
25,0
27,0
27,0
38,0
50,0
50,0
I
23,6
24,7
26,5
42,8
50,8
64,3
73,0
95,0
106,0
212,0
J
8,0
14,00
13,5
16,0
21,0
27,0
27,0
38,0
50,0
50,0
K
M2,5 x 4
M2,5 x 5
M3 x 6
M4 x 8
M4 x 9
M5 x 10
M5 x 10
M6 x 10
M6 x 19
N/A
L
19,0
19,0
21,0
25,0
38,0
45,0
60,0
70,0
100,0
N/A
M
N
----9,5
0,7
9,5
0,7
10,0
0,7
16,0
1,0
keyway
keyway
keyway
keyway
keyway
Applications for Hysteresis Brakes
Magtrol Hysteresis Brakes provide precise
control of wire tension during wind, hook
and cut operation of high speed automated
winding machines.
Transformer and coil winding operations
employing Hysteresis Brakes in open loop
control for maintaining precise tension during
winding process.
Regardless of control scheme (dancer roll, follower arm, photo or
ultrasonic sensors), Magtrol Hysteresis Brakes provide the ultimate in
tension control devices.
5
LARGE BORE BRAKES
(Brakes without a Shaft or Bearings)
For many years Magtrol has designed customized Hysteresis Brakes with
large bores, and without a shaft or bearings. These brakes are used for superior
tension control for helical wrapping, braiding and other feed through
applications. Magtrol Large Bore Brakes are used in machines for
manufacturing cable, wire, fiber optic cable, rope and tape, among others.
Now, we are pleased to offer a standard line of Large Bore Hysteresis Brakes
in both a regular design and a matched design. Magtrol Large Bore Brakes
provide smooth, repeatable torque, largely independent of speed. Maximum
speeds up to 8,000 RPM are available.
Magtrol’s Large Bore Brakes consist of two primary parts: A Pole/Case
Assembly and a Rotor. The Pole/Case Assembly is usually mounted in a
stationary position within the machine, while the Rotor is shaft mounted,
rotating concentrically within the Pole/Case Assembly.
The Pole/Case Assembly and Rotor come in standard bore sizes and hole patterns. Variations to the standard dimensions can be
made based on customer requirements. Certain modifications to the brake, such as a larger bore dimension, may impact its
performance ratings.
Magtrol also offers its Large Bore Brakes in a “Matched” design. Matched Brakes are set at a customer determined torque value
to provide torque vs. current of ±1% at the matched torque point. The matching feature allows for superior torque/current
consistency among brakes used in the same machine.
In addition to Matched Brakes, Magtrol offers Rotor Mounting Flanges, Power Supplies, Torque-Current Curves and other coil
voltages as options. Contact your local representative or Magtrol for more information.
Ratings
B R AK E
MOD EL
Min. Torque at
R ated C urrent
R ated
C urrent
Nm
LB-250M-2
LB-450M-2
LB-750M-2
LB-1750M-2
R es. at
25 o C ±10%
mA
250
300
380
600
1,50
3,00
5,00
12,00
VD C
Ohms
96
80
60
48
Watts
(N om.)
Maximum
R PM**
6,00
7,20
8,70
16,80
3000
2500
2000
1800
24
24
23
28
K inetic Pow er R atings
Watts
Intermittent
450
670
1000
2400
C ontinuous
110
160
200
350
Model
Weight
Kg*
3,00
5,30
10,00
21,00
* Model weight based on Maximum “B” dimension.
** Higher speeds available on special basis.
Dimensions (mm)
B R AK E MOD E L
LB -2 50 M -2
LB -4 50 M -2
LB -7 50 M -2
LB -1 75 0M -2
A
11 2,5
13 7,5
15 8,0
22 6,0
B*
28 ,0
42 ,0
50 ,0
80 ,0
C
70 ,0
90 ,00
11 0,0
15 5,0
D
36 ,0
50 ,0
60 ,0
12 0,0
* All “B” dimensions are maximum bore diameters.
6
E
F
54 ,5
57 ,0
80 ,0
83 ,0
50 ,5
52 ,5
73 ,0
76 ,0
K
M5
M5
M6
M6
x
x
x
x
L
10 ,0
10 ,0
10 ,0
19 ,0
45 ,0
60 ,0
70 ,0
10 0,0
M
54 ,0
80 ,0
90 ,0
14 0,0
N
M4
M5
M5
M5
Applications for Large Bore Brakes
Typical helical-wrapping operation in
which a rotating spindle winds onto a
laterally moving core with the supply
reel tension being controlled by a
Magtrol Large Bore Hysteresis Brake.
Flyer Control: The brake pole/
case assembly is bolted to the
machine frame and a hollow
shaft, with bearings, is mounted
in the pole. The hollow shaft,
rotor and flyer bobbin form one
assembly to tension the winding
material.
Operating Considerations
ThePole/Case Assembly and the Rotor are shipped as separate items,
and it is the responsibility of the machine designer to assure proper
alignment and concentricity of the mating brake parts in the final
assembly. The mounting structure for these parts must be such that
concentricity between the Rotor O.D. (outside diameter) and the Case
I.D. (inside diameter), which forms the outer segment of the air gap,
does not exceed 0,015 mm. Additionally, the run out of the rotor face
should not exceed 0,025 mm.
At the standard bore diameters, actual brake torque at rated current will
normally exceed the minimum guaranteed values. Larger bore diameters
can be provided, however, reductions in torque will result as bore
diameters are increased. The placement of a magnetic shaft material in
contact with, or in very close proximity to, the Pole/Case Assembly can
offset magnetic path loss due to a larger bore. Depending on the material
and the wall thickness of the shaft, it may bring the overall torque
capability back to rated values. Any modification to a Large Bore Brake
should be reviewed in detail with Magtrol before ordering.
7
Matched Brakes
In today’s manufacturing world where simultaneous process control
of multiple operations is vitally important, Magtrol has developed a
tension control device that offers consistent and reliable results every
time. In tension control applications that have multiple webs or
multiple strands it is very desirable to match the tension of each web
or strand. This is most commonly attained by using a closed loop
servo control system which controls current to a braking device through
the use of dancer arms, follower arms and in-line tension transducers.
The problem with such systems is that each web or strand must be
individually controlled, increasing the cost and complicating the
system with multiple sensors and power supplies.
Magtrol has developed a system to assure that every brake of a given model designation will be matched, at a predetermined
torque and current point, to every other brake of the same model designation regardless of material and manufacturing
tolerances. Each brake will be matched at the selected match point to within a tolerance of ±1% and the maximum deviation
in torque from brake to brake at any point along their torque/current curve will be less than 4% of the selected matched torque
value. With this level of matching, a system with multiple tension rollers would provide tension consistency within ±1% if set
at the matched point with all brakes receiving the same current. The matched point can be any value larger than 50% of the
maximum torque value, which allows the brakes to be optimized for specific applications.
Typical
Matched Brakes
Brake
Brake
Power
Supply
Power
Supply
Transducer
Transducer
Brake
Brake
Power
Supply
Transducer
Brake
Brake
Brake
Power
Supply
Transducer
Ordering Information
All single Hysteresis Brakes can be matched. When ordering, replace the HB in the Hysteresis Brake model number
(see page 4) with MHB.
EXAMPLE:
Standard
Matched
HB-140M-2
MHB-140M-2
LB-250M-2
MLB-250M-2
8
Applications for Matched Brakes
Magtrol Matched Hysteresis Brakes
used in a multiple payoff system
pay-off
where one sensor controls tension in
the system. Due to specially
calibrated “matched” brakes, it is
possible to hold each payoff tension
pay-off
within ±1% at matched point value.
Hysteresis Brakes, installed in a fiber
optic stranding machine to control the
tension of the wrapping material.
9
How to Select a Hysteresis Brake
To properly size a Hysteresis Brake, the operating parameters of MAXIMUM TORQUE (T), ANGULAR VELOCITY (ω),
and KINETIC POWER (P) have to be determined. Once calculated, these parameters can be used to select the proper size
brake from the technical data provided on the product engineering data sheets (see pages 4 and 6). These parameters are
easily calculated from system operating requirements such as: total web or strand tension (F); the radius of the full reel, roller,
pulley, etc. (d/2); and linear velocity/feed rate (v). The following example is given to show the relationship of these system
requirements to the calculation of the brake operating parameters. Since this example is not meant to cover all possible
applications, the application data sheet is provided. If additional assistance is needed, simply complete a copy of the data
sheet and fax it to Magtrol. Our Application Engineering staff will be pleased to assist you.
Sample Problem
GIVEN
GIVEN:: d = 0,5 m
FIND
FIND:: T
ω
DESCRIPTION
d - Diameter [m]
F = 2,0 N
v = 200 mmin
T - Torque [N•m]
P
F - Tension [N]
ω - Angular Velocity [rad/sec]
v - Velocity mmin
P - Kinetic Power
J
S
TORQUE
ORQUE::
T = F x d = 2,0 x 0,5 = 0,5 [N•m]
2
2
ANGULAR VEL
OCITY
VELOCITY
OCITY::
v
2π
v
200
ω = π • d x 60 = 30d = (30)(0,5) = 13,33 [rad/sec]
KINETIC POWER:
P = Fxv
N•m
= 2,0 x 200 = 6,67 S =
60
J
S
= [Watt]
Ordering Information
Specify the brake model number from the product engineering data sheet, followed by a -1, -2, or -3 signifying the
required coil voltage. In the example above, an HB-140M brake with a nominal 24 VDC coil would be ordered as an
HB-140M-2.
10
Application Data Sheet
Company Information
Device Type
Hysteresis Brake
Company
Matched Hysteresis Brake
Address
Large Bore Brake
Hysteresis Clutch
Contact
Phone
Permanent Magnet Brake
Fax
Permanent Magnet Clutch
E-mail
Application Specifications
Application Description
Max. Torque Required
Minimum Torque
Normal RPM
Intermittent RPM
Duty Cycle
Anticipated Qty
Electrical Specs.
Target Price
Desired Volts, DC
Ambient Conditions
Available DC Current
Ambient Air
Temperature
Electrical Time Constant
Other Special
Conditions
Application Sketch
Complete the Application Data Sheet and fax, with an application sketch if necessary, to Magtrol at 716-668-8705.
11
Special Designs and Modifications
Throughout our forty-five year history, Magtrol has created literally thousands of special and modified brake and clutch
designs to help solve specific application problems for our customers.
Common Specials and Modifications Include:
•
•
•
•
Non-Standard Coil Voltages
Special Shaft Configurations: keyways, flats, holes, hollow
Dust Covers
Speed Pickups
•
•
•
•
Special Mounting Configurations
Non-Standard Lead: material, lengths, location
Higher Torque Devices
High Speed Units
Forced Air Cooled Brakes
BLOWER COOLED
COMPRESSED AIR COOLED
Unlike many other forms of braking devices, Magtrol Hysteresis Brakes can be safely operated at relatively high speeds,
provided the combination of applied torque and speed of operation do not cause the brake to be operated beyond its kinetic
power rating. The kinetic power rating of the brake can be increased significantly, when necessary, by forced air cooling.
Magtrol has designed brakes with provisions for forced air cooling utilizing compressed air supplied by the machine builder
and has also created special designs and blower packages for use in high-torque/high-speed applications where compressed air
is not available.
Higher Torque Capability
It is Magtrol’s policy never to overstate the capabilities of our products. As a result, our brakes are conservatively rated.
However, Magtrol can typically provide higher torque of up to 15-25% above rated value in the same size device to meet your
requirements. In addition, special designs capable of producing even higher torques are available. Contact Magtrol for more
information.
Maximum Torque
+15–35%
TORQUE
Rated Torque
CURRENT
12
Accessories and Other Products
Torque Current Curves
TORQ
ORQUE
UE
Nominal performance characteristic curves similar
to that shown will be provided by Magtrol, upon
request. Precise calibration curves for individual
brakes can be provided, but must be specified at
time of order and do require and additional charge.
Contact Magtrol for price and delivery of brakes
complete with calibration curves.
Mounting Options
Although intended for coupled service, moderate overhung loads can be
tolerated, depending on such operating characteristics as speed, weight, and
center of gravity of load. Care should be taken to assure proper shaft alignment
and couplings should be of proper size and flexibility to adequately protect
bearings from undue stress and shock loading.
Base Mount
Pillow Blocks
Base mounting is standard on all HB-3500M-2
brakes. Base mounting is also available as an
option on all other brakes. Contact Magtrol for
price and delivery.
Pillow blocks are available
for all brake units except the
HB-3500M. Please contact
Magtrol for price and
delivery.
CURRENT
○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
Model 5200 Power Supply
146 W x 171 D x 70 H
Model 5200 is an unregulated 0-35 VDC Power Supply which offers control and regulation of the Dynamometer
braking torque via a 10 turn potentiometer. The 5200 is our most basic control for manual testing in an open
loop torque control mode. The 5200 will permit testing within the stable operating portion of the motor under
test’s performance curve, and will provide sufficient power to lock up the motor under test (subject to the torque
limit of the Dynamometer).
Model 5210 Current Regulated Power Supply
190 W x 248 D x 70 H
Model 5210 provides the same control capabilities as the 5200, and also provides current regulation
of the dynamometer brake. With regulated current, the 5210 will eliminate torque drift caused by
temperature changes within the dynamometer brake coil. Like the Model 5200, the 5210 does not
provide closed loop speed control for testing in unstable operating ranges. The 5210 can be controlled
manually from the front panel, or externally from the 0-5 VDC input.
○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
Hysteresis Clutches
Like the Hysteresis Brake, the Magtrol Hysteresis Clutch develops torque strictly through a magnetic
air gap, ensuring an absolutely smooth transmission of torque from the drive unit to the driven
element. Designed to be powered without the use of brushes or slip rings, and being a pure
hysteresis device that does not rely on friction elements or magnetic particles, there is never any
fear of contamination due to wear particles or leaky seals. This makes Magtrol Hysteresis Clutches
and Brakes ideal for use in food processing and clean room environments.
Permanent Magnet Brakes and Clutches
Magtrol Hysteresis Permanent Magnet Brakes are ideal in applications where electrical power
cannot be provided to a brake or clutch coil. While best suited to applications where a fixed
torque is to be applied, adjustable units can be made specifically tailored to the application. While
typically provided as brake units, because there are no electrical connections, the same unit can be
used as a clutch. In a clutch application, the pole/case member becomes the drive element, and
the rotor/shaft assembly becomes the drive element, and the rotor/shaft assembly becomes the
driven element of the clutch with torque being transmitted through the magnetic air gap. Magtrol
Hysteresis Permanent Magnet devices provide all the superior operating characteristics of smooth
operation, precise repeatability and long life inherent in our Hysteresis Brakes and Clutches.
13
OTHER MAGTROL PRODUCTS
Motor Testing Equipment
Magtrol Dynamometers, considered the industry
standard, range from 2.5 oz.in. to 500 lb.in. (full scale)
for testing electric, hydraulic and pneumatic motors,
and gas engines. Magtrol Dynamometers provide
precise torque loading (± 0.25% of full scale) by means
of a Hysteresis Brake, permitting motor testing from
zero load to locked rotor. A variety of Controller and
Readout options allow for application-specific system
design. Torque and speed settings can be controlled
either manually or via a PC based Controller.
Customized Motor Test Systems
Magtrol’s Customized Motor Test Systems (CMTS) are PC based, turn-key motor test systems custom designed and built to
meet your specific requirements.
A typical CMTS will include:
•
One or more Dynamometers
•
Computer and Printer
•
Programmable Dynamometer Controller
•
GPIB Cards and Cables
•
Power Analyzer
•
Test Console
•
Customized Software
•
Motor Fixturing
•
Motor Power Supply (AC and/or DC)
•
Couplings
Customized Software
The application specific system software ties a Magtrol CMTS together into a simple user
interface. The typical user interface is a two-tiered access system that provides engineer
and operator access. The operator interface is a simple push-to-test system, while the
engineering access level allows custom configuration of all test parameters, creation of
new product tests and motor test statistical analysis, delivering maximum flexibility to
accommodate present and future products.
Typical software features include:
• Over 1000 user configurable tests
• Fast test cycle times and data acquisition
• Product test databasing and statistical analysis features including process monitoring
capabilities
• Test Summary hard-copy reports for each test conducted
To obtain a quotation for a CMTS, please contact Magtrol or your local representative.
Represented by:
70 Gardenville Parkway " Buffalo, NY 14224
Phone: (716) 668-5555 " Fax: (716) 668-8705
Web site: http://www.magtrol.com
Call Toll Free: 1-800-828-7844
E-mail: [email protected]
MetB 08/00 2000