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Motor Technology - SKAddr
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)

Ceramic Plotter Palletiser Rotary Carousel Screen Printing

 

Two versions of the SKAddr series motors are available:

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

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"Multi-pole" permanent magnet brushless synchronous servomotor

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1.9 Nm to 770 Nm stall torque

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Thermal protector (clixon)

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Class F insulation

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IP65 protection (PP version)

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Wide range of transducers including, Resolver, Hall-effect sensors, incremental encoders, sine / cosine encoders, tape encoders, magnetic encoders

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Versions with hollow or solid shaft

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Supply voltage 145 to 460 Vac

 

Technical Data

 

 

Units

SKA DDR090

SKA DDR148

SKA DDR245

SKA DDR335

SKA DDR430

External Diameter (A)

(mm)

110

180

290

390

470

Hole Diameter (B)

(mm)

38

78

145

235

320

Length (H)

(mm)

60

90

120

60

90

120

150

 

60

90

120

150

 

60

90

120

150

180

 

60

90

120

150

180

210

Number of Poles

 

14

14

28

42

56

Stall Torque

(Nm)

1.9

3.2

4.3

8.3

13.7

18.7

23.3

 

42

67

88

109

 

100

160

210

260

300

 

237

368

479

580

677

770

Speed Range

(rpm)

1700300

1200150

80090

50050

30050

 

 

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.