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Catalog pages with specs and drawings Specifications Like this, only manual drive
B4800 is a Series of three Rotary Tables that use a worm and gear drive design with a heavy duty central rotating ball bearing.  The tables accept NEMA size 23 stepper motors or instrument case-type motors (Bodine Type K).Specifications All tables have a hollow spindle or clear aperture for optical applications, an 360° scale and an adjustment to minimize gear backlash. Attaches to Series 4000 or 6000 UniSlide Assemblies with the A6000TX adapter plate. Plate is 6" x 6" x ¼". Attaches to BiSlide with MSPP-3 plate. Download CAD drawings.

Options :

 

  • Black anodized finish Photo 3
Black anodized rotary table

 

  • Magnetic reed home switch option Photo 4
magnetic reed home switch
   
  Vacuum Preparation:
includes degreasing internal bearings and re greasing with vacuum compatible grease. More details.
   

 

  • Encoders on dc gear motor motor shaft extension Photo 5
rotary table and encoder < B4800 with Pittman gear motor

 

Gear ratios and performance

    At maximum input of 600 RPM  
Model Number Gear Ratio RPM Time Per Revolution Degrees
Second
Degrees per Step Typical Backlash
B4818TS
18:1
33.3 1.8 sec 200°/sec 0.050°* 600 arc - second
B4836TS
36:1
16.7 3.6 sec 100°/sec 0.025°* 400 arc - second
B4872TS
72:1
8.3 7.2 sec 50°/sec 0.0125°* 200 arc - second

*Degree per Step values are with 400 step/revolution (0.9° resolution) motors

Load Capacity when table is... Series B4800TS
Horizontal 200 lbs.
Vertical 25 lbs.
Cantilever Load (Horiz.) 500 in-lb.
Table top axial run out 0.00025" TIR
Table top radial run out 0.0005" TIR
Accuracy 100 arc - second
Repeatability 1 arc - second
Table weight 5.5 lbs. / 2.5 kg.
Max. input shaft speed 600 rpm
Max. input shaft torque 150 oz-in

Dimensions for all B4800 Rotary Tables

Item Inches mm
Overall length 5.72 145
Threaded holes for payload 3.25 BC 83
Clear Aperture 1.57 40
Diameter 4.92 125
Width 5.27 134
Height 2.37 60
Pilot ring diameter
(does not rotate)
2.559 65


B4800TS Mounting

An adaptor plate is required to mount the B4800 to a Velmex stage.
To mount to a UniSlide, use adaptor plate A6000TX
To mount to a BiSlide, use MSPP-3 Universal adapter plate

B4800 dimensional Drawing showing mounting holes details.

Anchoring table base: There are two approaches to securing the base of the table. First, there are two clearance holes for 10-32 UNF cap screws for attachment from above through the top access hole.

Alternatively, to attach with screws from below, there are four threaded holes. They are ¼"- 20 UNC - x ½" on a 4" diameter bolt circle.


B5990TS
small rotary table
Photo 6

Gear ratios and performance

    At maximum input of 600 RPM  
Model Number Gear Ratio RPM Time Per Rotation Speed Degrees per Step Typical Backlash
B5990TS
90:1
6 9 seconds 40.2°/sec 0.010* 160 arc - second

Rotary table speed is a function of motor and driver choice.
*With 400 steps/rev motor.

Specifications Model B5990TS
Horizontal capacity 50 lbs.
Vertical capacity 5 lbs.
Cantilever Load (Horiz. position) 20 in-lb.
Table top axial run out 0.00011" TIR
Table top radial run out 0.00008" TIR
Accuracy 100 arc - second
Repeatability 1 arc - second
Table weight 2.7 lbs. with motor
Max. input shaft torque 50 oz.-in.
Download CAD drawings

Options

 

  • Home switch/ Zero reference switch option Photo 7
rotary table with home switch

Applications

three thetas

Photo 8: A three axis (tilt, pan, rotate) system consisting of a motor in the base (theta 1, hidden), a tilt (theta 2), and a pan axis behind the platen (theta 3). The payload mounts on the platen. All three motors are controlled with our VXM - 3 programmable controller.

chuck on rotary table Photo 9: B4872TS Rotary Table with pin-indexed adapter plate supporting a customer-provided chuck.
tilt and pan fixture

Photo 10: Three axes of rotary motion perpendicular to each other

Three Series B4800 rotary tables combined using A4001 XZ adapter bracket. These tables are used to provide for altitude and azimuth, tilt and pan or pitch and yaw motion.

Photo 11: For lighter payloads, a three axes system consisting of 1 B4800 model and 2 B5990TS units.
Photo 12: A combination of electro and pneumatic rotary tables for production environment.The pneumatic table on the bottom provides quick, gross positioning while the Velmex Model B4872TS Rotary table on the top provides final, fine positioning. (The step motor has been removed.)
limited travel Photo 13: By adding a second zero ref switch, this table is limited to 90° rotation

An A48 Rotary Table is used to support a three-jaw chuck which holds jewlery

ring engraver

Photo 14: An A48 Rotary Table is used to support a three-jaw chuck which holds jewelry (rings) for a custom engraving application.

Larger view

Uses MB6000 UniSlide, right angle platform and pneumatically driven engraver.

 

 
 
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