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Rotary Stages

Introduction

The NSI rotary stages are specifically designed for the high accuracy requirements of indoor antenna measurements. They are powerful, compact and reliable. Designed to last for many years, each stage includes the following features:

  • Zero-backlash, wear compensating worm and gear actuation
  • Aligned and doweled rotation plate
  • Rotation limited by internal switches that can be disabled in software
  • Clearance hole through spindle
  • Preloaded radial crossed roller spindle bearing is fully sealed from contamination
  • Several sets of mounting holes in rotation plate
  • Includes 40' (12 m) motor cable

Rotary Stage Dimensions **
Fig NSI Part# A B C D E F G H I J K L M N
THETA OR
PHI
Roll* Mount Screw Size Mount Hole Spacing Hole Size w/ Threads B.C.
Dia.
B.C.
Dia.
Hole Size w/ Threads Hole
 Depth
B.C. Dia. Clearance
Hole
Width Overall Height Overall Length Rotation Plate Height Rotation Plate
 Dia.
NSI-SC-xxxx metric in
(mm)
metric in
(mm)
in
(mm)
metric in
(mm)
in
(mm)
in
(mm)
in
(mm)
in
(mm)
in
(mm)
in
(mm)
in
(mm)
1 5632 5630 M5 3.35
(85)
M5 2.95
(75)
1.77
(45)
M4 0.28
(7)
3.51
(89)
0.47
(12)
4.1
(104)
2.16
(55)
10.1
(257)
0.32
(8)
3.94
(99)
2 5633 5631 M6 4.92
(125)
M6 4.92
(125)
3.94
(100)
M6 0.39
(10)
3.51
(89)
1
(25)
3.8
(97)
2.95
(75)
14.5
(368)
0.43
(11)
5.91
(148)
3 5634 --- M8 6.69
(170)
M8 5.91
(150)
3.94
(100)
M6 0.5
(13)
3.51
(89)
1.5
(38)
3.8
(97)
3.54
(90)
16.4
(417)
0.59
(15)
7.87
(198)
4 5635 --- M8 10.63
(270)
M8 9.84
(250)
5.91
(150)
M6 N/A N/A 1.5
(38)
3.4
(86)
4.25
(108)
24.7
(627)
0.63
(16)
11.72
(298)
5 5638 --- M16 --- M8 15.03 (382) 9.84 (250) --- --- --- --- 24.8 (630) 12 (305) 25.6 (650) 1.3   (33) 20.0
(508)
6 5660
(2-axis)
--- M16 --- M8 15.03 (382) 9.84 (250) --- --- --- --- 34.5 (876) 34 (864) 28.1 (714) 1.3   (33) 20.0
(508)


*Also includes 26.5 GHz rotary joint kit.

** Reference drawings and dimensions


Rotary Stage Specifications

Fig
NSI Part Number
Rotation Plate
Diameter
Position
Accuracy
Position
Repeatability
Step Size
Speed
 (max)
Axial
Load (max)**
Radial
 Load (max)**
Bending
Moment
Limits
Weight
THETA
Or
PHI
Roll*
NSI-SC-xxxx
in.
(mm)
degree
degree
degree
degree
/sec
lb.
(kg)
lb.
(kg)
in-lb
(Nm)
degree
lb.
(kg)
1
5632
5630
3.88
(98.5)
0.09
0.03
0.0150
40
430
(195)
160
(72.6)
**
±160
4.5
(2.0)
2
5633
5631
5.81
(147.6)
0.09
0.03
0.0125
40
1595
(725)
550
(249.4)
**
±170
14.5
(6.6)
3
5634
---
7.78
(197.7)
0.09
0.03
0.0125
40
2000
(907)
1080
(489.8)
**
±170
28.2
(12.8)
4
5635
---
11.72
(297.7)
0.09
0.03
0.0100
20
4400
(1995)
1800
(816)
**
±170
85
(38.6)
5
5638
---
20
(508)
<0.05
<0.015
0.0015
30
10,000
(4535)
2,500
(1,134)
120,000
(13,560)
±170
285
(130)
6
5660
(2-axis)
---
20
(508)
0.09
0.03
0.0015***
30
2,500
(1,134)
2,500
(1,134)
30,000
(3,390)
az ±170
el -5 to +140
886
(402)

*Also includes 26.5 GHz rotary joint kit.
** Reference load offset curves
*** User can configure stepper drive for different step sizes as small as .0002

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