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Electronic Components
Crameda Intersys AG Tel. +41-44-884 11 60 Handy +41-79-635 18 87
Getriebe-E-060915.doc Pumpwerkstrasse 23 Fax +41-44-870 07 59 Page
: 1 CH-8105 Regensdorf · Schweiz http://www.crameda.com
Data Sheet Continuous Speed Variators
Features and characteristics
Outstanding features of the speed variators Wide range of
control Low control torque The speed can be regulated either during
operation or
when at a standstill Small control angle The control spindle can
be mounted at the driving or the
driven shaft side Accurate repeatability of the desired speed
Stable speed output independent of load variations Small dimensions
due to compact design Coaxial driving and driven shafts Ball
pressure varies with output torque Extremely smooth running High
efficiency Long service life
Available types The following types are available: Size 10 15 25
35 Range of control 10:1 20:1 20:1 11:1 Control torque (Nm) 0,07
0,1 0,2 0,25
Output, shaft-end design and flanges comply with
IEC-standards.
Regulation The speed or speed ratio setting may be read from the
regulator dial. The control spindle of speed variator drives with
integral motor is supported by the motor bearing end bracket. With
separate speed variators, however, the control spindle must be
provided with an additional support outside the variator shaft.
Remote control of speed The speed variators may be
remote-controlled by means of an actuator and a control unit.
Please ask for the special documentation.
Driving motors As a standard, asynchronous motors of protection
type IP44 are supplied. Motors up to protection type ExeC for use
in explosive gas atmospheres may be provided. The motor bearings do
not require any particular maintenance in operation. Motors and
speed variators are connected with an elastic coupling.
Operating position The speed variators are designed for
operation in horizontal position.
Mounting Separate speed variators as well as speed variator
drives with integral motor are designed for horizontal mounting,
either with or without a mounting base plate. Face mounting types
with IEC-flanges are available.
Lubricant Monsanto Santotrac 50 (synthetic lubricant)
Accessories and reduction gears Please ask for our special
documentation on optional attachments, such as control devices with
dial, oil gauge glasses, couplings, IEC-flanges.
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Electronic Components
Crameda Intersys AG Tel. +41-44-884 11 60 Handy +41-79-635 18 87
Getriebe-E-060915.doc Pumpwerkstrasse 23 Fax +41-44-870 07 59 Page
: 2 CH-8105 Regensdorf · Schweiz http://www.crameda.com
Principle of operation and features of speed variators The
torque is transmitted from the driving shaft via the driving side
thrust assembly, the driving side ball race, the four steel balls,
the driven side ball race and the driven side thrust assembly to
the driven shaft. The control spindle is rigidly connected to the
control worm and cannot be moved axially. The control worm is in
mesh with the four roller shift wheels with external teeth, which
in turn are supported in the stationary roller carrier held by the
roller carrier disk. The centers of the roller shift wheels,
control rollers and steel balls are situated in one plane and are
stationary. The steel balls are centered by the four control
rollers supported in the roller shift wheels, and the two ball
races. The two thrust assemblies press the ball races against the
steel balls. The thrust assemblies consist of two thrust collars,
three pressure balls with springs providing the basic ball
pressure. The broad thrust collars are rigidly centered on the two
ball race supports, but are axially movable. These supports may
rotate to a limited extent on the driving and driven shafts
respectively. The driving and driven shafts are both supported in
the roller carrier and in the variator housing. The narrow thrust
collars are rigidly mounted on the two shafts, but are axially
movable as well. Each thrust collar carries three individual
grooves for the pressure balls, with decreasing depth in both
directions of rotation. As long as the speed variator is on
no-load, the balls remain at the deepest point of the grooves.
With increasing driving torque, the pressure balls climb along
the groove slope, exerting an axial force proportional to the
torque. Turning the control spindle will vary the inclination of
the control roller axles, resulting in a variation of the speed of
the driven shaft. The inclination of the rotary axes of the steel
balls is determined by the inclination of the rotary axes of the
control rollers. This fact permits a variation of the perimeter
ratio of the driving and driven side rolling circles on the steel
balls. The theoretical rotary axes of the control rollers and the
steel balls always intersect at one point on the theoretical axis
of the speed variator. However, if the control roller axles are
parallel to the variator axis, the output speed will be identical
to the input speed, the two rolling circles being equal. If the
control roller axles are inclined toward the axis of the driving
shaft, the output speed will decrease with increasing inclination
of the control roller axles, the driving side rolling circle
growing larger, and that on the driven side becoming smaller. If
the control roller axles are inclined toward the axis of the driven
shaft, the output speed will increase in relation to the input
speed. All rolling parts are hardened and ground. High precision
and an excellent surface quality guarantee silent operation, low
working temperatures, high efficiency and perfect
interchangeability of all moving parts.
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Electronic Components
Crameda Intersys AG Tel. +41-44-884 11 60 Handy +41-79-635 18 87
Getriebe-E-060915.doc Pumpwerkstrasse 23 Fax +41-44-870 07 59 Page
: 3 CH-8105 Regensdorf · Schweiz http://www.crameda.com
Technical Data
Speed variators
Speed range rev./m
Max torque Nm
Control angle
Degrees
Max driving speed rev./m
Approx. housing
dimensions mm
Oil volume
cm3
Approx weight
kg
Position of control spindle Ordering ref.
200-2000 0.3 324 2000 62Ø x 110 30 1 Input side
Output side H10A Type A H10A Type B
150-3000 1.0 573 1500 120Ø x 174 75 7.5 Input side
Output side H15D Type A H15D Type B
150-3000 4.8 690 1500 160Ø x 230 125 18 Input side
Output side H25D Type A H25D Type B
200-2200 10.0 890 1500 200Ø x 292 400 30 Input side
Output side H35D Type A H35D Type B
Types H15D, H25D and H35D are optionally available with IEC
flange. Mounting base plate optionally available.
Speed variator drives with integral motor
Motor characteristics Speed range
rev./m Max torque
Nm
Control angle
Degrees rev./m kW
Approx. housing
dimensions mm
Oil volume
cm3
Approx weight
kg
Position of control spindle Ordering ref.
130-1300 0.3 324 2000 0.05 87Ø x 235 45 4 Input side
Output side HM10A Type A/4HM10A Type B/4
270-2700 0.3 324 2700 0.075 87Ø x 235 45 4 Input side
Output side HM10A Type A/2HM10A Type B/2
140-2800 1.0 573 1400 0.18 129Ø x 384 75 15 Input side
Output side HM15D Type A HM15D Type B
140-2800 4.8 690 1400 0.75 160Ø x 505 125 33 Input side
Output side HM25D Type A HM25D Type B
200-2200 10 890 1400 1.5 200Ø x 612 400 60 Input side
Output side HM35D Type A HM35D Type B
Types HM15D, HM25D and HM35D are optionally available with IEC
flange. Crameda Intersys AG stands for a worldwide spare part and
repair service, comprehensive maintenance instructions and expert
advice concerning your driver problems.
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Electronic Components
Crameda Intersys AG Tel. +41-44-884 11 60 Handy +41-79-635 18 87
Getriebe-E-060915.doc Pumpwerkstrasse 23 Fax +41-44-870 07 59 Page
: 4 CH-8105 Regensdorf · Schweiz http://www.crameda.com
Control, torque and power characteristics
Control characteristics
Speed variators
Speed variator drives with integral motor
Torque characteristics
Speed variators
Speed variator drives with integral motor
Power characteristics
Speed variators
Speed variator drives with integral motor