MI-51000 Family of Azimuth Positioners

MI-51050

The MI-51000 Family of Azimuth Positioners fall into two principle categories: medium-duty and heavy-duty. The MI-51050 and MI-51051 support medium loads up to 2000 lbs while the MI-51150 through MI-51850 models provide precision mounting for test fixtures and antennas supporting loads up to 400,000 lbs.

downloadpdfCables and positioner control units are ordered separately. Note that an installed rotary joint and RF path through each positioner is ordered as an option.

  • Proven design with established reliability
  • Broad load coverage up to 400,000 lbs.
  • Rugged construction assures superior longevity

Specifications

Parameter Units 51050D 51051D 51150D 51152D 51230D 51300D 51430D 51450D 51850D
Total Bending
Moment
ft-lbs 1,000 1,000 10,000 10,000 22,500 35,000 165,000 165,000 750,000
Nm 1,356 1,356 13,558 13,558 30,506 47,454 223,710 223,710 1,016,865
Total Vertical
Load
lbs 2,000 2,000 10,000 10,000 20,000 30,000 50,000 50,000 400,000
kgs 907 907 4,536 4,536 9,072 13,608 22,680 22,680 181,437
Drive Motor hp 1/15 1/15 1/3 1/3 3/4 3/4 3/4 5 5
kW 0.05 0.05 0.25 0.25 0.56 0.56 0.56 3.73 3.73
Delivered
Torque
ft-lbs 100 40 200 500 1,000 2,750 6,000 18,000 80,000
Nm 136 54 271 678 1,356 3,729 8,135 24,405 108,466
Withstand
Torque
ft-lbs 200 200 600 600 1,850 4,200 14,000 25,000 100,000
Nm 271 271 813 813 2,508 5,694 18,981 33,896 135,582
Maximum
Full Load
Operating
Speed
rpm 1.2 3 3 1.3 1.2 0.5 0.2 0.5 0.09
Position
Accuracy
deg 0.05 0.05 0.03 0.03 0.03 0.03 0.02 0.02 0.02
- with
Inductosyn®
encoder
deg N/A N/A N/A N/A ±0.005 ±0.005 ±0.005 ±0.005 ±0.005
Total Max.
Drive Gear
Backlash
deg 0.2 0.2 0.15 0.15 0.1 0.08 0.08 0.05 0.02
Total Limit-to-
Limit Travel
deg 400 400 400 400 400 400 400 400 400
Turntable
Diameter
in 16 16 20 20 25 30.5 47.3 47.3 84x84 (sq.)
mm 406 406 508 508 635 775 1,201 1,201 2133x2133 (sq.)
Center
Access Hole
Diameter
in 3.75 3.75 3 3 3 3 6 6 13
mm 95.3 95.3 76.2 76.2 76.2 76.2 152.4 152.4 330.2
Base Outside
Diameter
in 13.25x17.25 13.25x17.25 24 24 28.75 36 56 56 92
mm 336x438 336x438 610 610 730 914 1,422 1,422 2,337
Total Height in 13.25 13.25 19.75 19.75 14.75 17 39 39 54
mm 337 337 502 502 375 429 986 986 1,362
Net Weight lbs 110 110 280 280 350 485 4,000 4,300 15,000
kg 50 50 127 127 159 220 1,814 1,950 6,804
Shipping
Weight
lbs 150 150 320 320 380 570 4,500 4,800 N/A
kg 68 68 145 145 172 259 2,041 2,177 N/A

Configuration Options

Feedback Limit Switches Rotary Joint w/ RF path Slipring Assembly RF Switch Wiring
-FDS -LS -RJ0 -SR0 -SW0
-FDS
Dual Speed Synchro
(36:1)
-LS0
No Adjustable Limit
Switches
-RJ0
No Rotary Joint
-SR0
No Slipring
-SW0
No RF Switch Wiring
-FI
Inductosyn®
-LS
Adjustable Limit Switches
-RJ18
DC-18GHz
-SR60 60 Conductor -SW
RF Switch Wiring
-RJ26.5
DC-26.5GHz
-SR84 84 Conductor
-RJ40
DC-40GHz

Option Compatibility Table

Model Feedback Limit Switches Rotary Joint with RF Path Slipring Assembly1 RF Switch Wiring
51050D FDS only Yes Yes No No
51051D FDS only Yes Yes No No
51150D FDS only Yes Yes SR60 only Yes1
51152D FDS only Yes Yes SR60 only Yes1
51230D Yes Yes Yes Yes Yes1
51300D Yes Yes Yes Yes Yes1
51430D Yes Yes Yes Yes Yes1
51450D Yes Yes Yes Yes Yes1
51850D Yes Yes Yes Yes Yes1

1 Slipring Assembly not compatible with RF Switch Wiring Option.