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Motor Technology - SKAddr |
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request details | direct drive rotary motors up to 770Nm |
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The SKAddr direct drive motors, also often referred to as torque motors, offer an unmatched choice of construction formats making it easy for the customer to select the motor perfect for the application.
By implementing a modular approach to the motor construction it can be tailored to your exact needs, whether you are a large scale OEM or a small special purpose machine builder.
Besides eliminating backlash and mechanical elasticity in the drive transmission, this type of configuration drastically speeds up servicing work and lowers maintenance costs while achieving appreciable energy savings through improved overall efficiency.
Application Examples (click on the relevant picture for details in PDF format)
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| Ceramic Plotter | Palletiser | Rotary Carousel | Screen Printing |
Two versions of the SKAddr series motors are available:
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SKA DDR (Direct Drive Rotary) frameless, comprising rotor and housed stator. |
SKA DDR (Direct Drive Rotary) power pack, fitted with a hollow or solid output shaft, front and end bearings, and optional feedback device. |
Featuring an excellent nominal and peak torque capacity plus high acceleration and deceleration values, the SKAddr direct drive servomotors achieve efficiencies and precision positioning that are difficult to obtain with conventional systems.
Natural evolution of direct coupling between the motor and driven load, the conventional components of the kinematic chain have been totally eliminated from these servomotors.
Motor construction
Features
"Multi-pole" permanent magnet brushless synchronous servomotor
1.9 Nm to 770 Nm stall torque
Thermal protector (clixon)
Class F insulation
IP65 protection (PP version)
Wide range of transducers including, Resolver, Hall-effect sensors, incremental encoders, sine / cosine encoders, tape encoders, magnetic encoders
Versions with hollow or solid shaft
Supply voltage 145 to 460 Vac
Technical Data
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Units |
SKA DDR090 |
SKA DDR148 |
SKA DDR245 |
SKA DDR335 |
SKA DDR430 |
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External Diameter (A) |
(mm) |
110 |
180 |
290 |
390 |
470 |
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Hole Diameter (B) |
(mm) |
38 |
78 |
145 |
235 |
320 |
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Length (H) |
(mm) |
60 90 120 |
60 90 120 150
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60 90 120 150
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60 90 120 150 180
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60 90 120 150 180 210 |
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Number of Poles |
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14 |
14 |
28 |
42 |
56 |
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Stall Torque |
(Nm) |
1.9 3.2 4.3 |
8.3 13.7 18.7 23.3
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42 67 88 109
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100 160 210 260 300
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237 368 479 580 677 770 |
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Speed Range |
(rpm) |
1700÷300 |
1200÷150 |
800÷90 |
500÷50 |
300÷50 |
Dimensions (frameless stator part)
Inertia
matching
Since the SKAddr motor is directly connected to the machine,
inertial matching is not required as it is on a conventional motor. With direct
drive, inertia miss match of 250 to 1 (and over) is common.
Mounting Orientation
The SKAddr motor can be mounted with any orientation
including either a horizontal or vertical shaft.
