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Rotary table ACR-250HT (High torque)


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Diameter 430 mm

Aperture 254 mm

Height 68 mm

Availability: 2 - 3 Days
Model: ACR-250HT
Average Rating: Not Rated


AccuRing rotary tables provide superior angular positioning and are designed to eliminate backlash, friction and wear problems associated with worm, gear and belt drives. Low maintenance and high throughput characteristics of the AccuRing stage yields the lowest total cost of ownership.

 

Compact package and Superior design of the AccuRing rotary stages was optimized to minimize stage height. The low profile of the stage reduces total system working height. Angular contact bearings are used to maximize performance with respect to wobble, moment stiffness and friction. AccuRing stage has large clear center aperture that can be used for air or wire line feed-through or beam delivery.

 

AccuRing utilizes direct drive three phase brushless motor technology. There are no brushes to replace and no gear trains or belts to maintain. Coreless magnetic design assures smooth rotation and dynamic performance.

 

Accurate Positioning is assured with contact-less encoder. The motor and rotary encoders are directly coupled to eliminate coupling backlash. The low inertia and zero backlash make AccuRing the ideal solution for applications requiring frequent directional changes.

 

 

Semiconductor assembly

    Electronics assembly

Precision machine tools

    Robotic handlers

Wafer processing

    Automation

 

 
System Performance

Unit

ACR-250HT

ACR-325HT

ACR-480HT

Winding

 

HT

HS

HT

HS

HT

HS

Center aperture

mm

254

324

478

Outside diameter

mm

430

550

715

Stage height

mm

68

75

81

Peak Torque

Tp

 (Nm)

300

500

950

Continuous torque

air cooling, coil 120°C

Tc120

(Nm)

120

180

350

Peak current at Tp

Amp p rrms

14

24

14

24

14

24

Continuous current at Tc

Amp c rrms

5

8

5

8

5

8

Recommended voltage (note 1)

Usvdc

310

540

          540

540

Max speed at Tp and Us  

(note 2)

RPM

100

220

50

130

15

60

Max speed at Tc and Us  

(note 2)

RPM

180

330

110

200

50

100

Positioning resolution

(note 3)

counts/rev

 

3,600,000 (standard)

7,200,000

(optional)

4,600,000

(standard)

9,200,000

(optional)

6,600,000

(standard)

13,200,000

(optional)

Positioning resolution

(arc-sec)

0.36

(standard)

0.18

(optional)

0.28

(standard)

0.14

(optional)

0.24

(standard)

0.12

(optional)

Accuracy

Arc-sec

30 (standard)

8 (optional)

     

Run-out axial/radial

micron

10

Stage weight

M (Kg)

29

47

65

Load weight

M (Kg)

100

200

300

 

Note 1: Rotary table can operate at lower voltages with lower speeds

Note 2: Speed values shown at rated torque

Note 3: Max speed may be limited by controller's encoder frequency input.

            Sin/cos 1 Vpp and other encoder resolutions available.

            Contact the factory.