CNC Rotary Table Indexer
About the CNC 4″ Rotary Table Indexer
Sherline has taken their accurate and reliable 4″ rotary table into the 21st century with the addition of Computer Numeric Control. Clock-makers or anyone with a need to cut gears or other complicated radially symmetrical patterns will find this accessory takes all the headaches out of repetitive indexing operations.
All entries are made from this simple keypad. No separate computer is needed. You get everything you need, including the 4″ Sherline rotary table with an installed stepper motor, microprocessor unit with numeric input keypad, 115 VAC power source, and all necessary connecting cables.
Vertical Mounting Options
The rotary table comes with clamps and T-nuts for attaching it to the T-slots of a Sherline mill table. In addition, there are two options available for mounting the table in the vertical position or at other angles:
Right-Angle Attachment—This plate holds the table in the vertical position with a center height of 2.7″. A right-angle tailstock is also available to support long stock held on center in the rotary table.
Tilting-Angle Table—This table holds the rotary table and can be fixed at any angle from 0° to 90°. In the 90° position, the rotary table center is also at the 2.7″ height, which allows the right-angle tailstock to be used with it.
Operation is very simple
After entering the number of steps per revolution (or the number of degrees per step) on a simple numeric keypad, the table advances quickly and precisely to the next position at the touch of a single advance key. If an error is made, previous positions can be accurately recalled by hitting another button. Basic resolution is 28,800 steps per revolution, ±0.006° per step. This allows the accurate machining of items like gears with odd numbers of teeth. Computations are made internally to a high degree of accuracy to avoid cumulative errors.
The CNC rotary indexer is a stand-alone unit. You get everything you need to make complex indexing jobs easy. In addition, the unit can be connected to an existing CNC control to act in conjunction with that system. An input signal triggers the programmed function. When it is complete, it signals back to continue the program. The unit can also be “daisy chained” with other units to trigger sequential actions. As with all Sherline accessories, complete instructions are included.
The rotary table can also be “daisy chained” with Sherline’s linear controller (P/N 8800) to achieve combinations of rotary and linear movement in sequence. This makes it easy to set up for relatively sophisticated operations like cutting gears without having to know anything about CNC programming beyond what is entered from these simple keypads.
NOTE: We are stating the following weight limits for our rotary tables for continual use.
- Horizontal orientation—50 lbs.
- Vertical orientation—30 lbs.
- Vertical rotational torque—6 foot/lbs. (meaning it can lift a 6 lb. weight when suspended 12″ away from the center of the rotary table)
The rotary tables can hold more weight when they are not under a continual load. Click on the Video tab above to see examples of different weights and uses for our rotary tables.
About the Controller Power Supply Current
The controller power supply is 110-240VAC compatible. It automatically switches from 110V to 240V for countries with 220-240 volt electrical current. The original power supply that we offered with this product was 110 VAC only.
Using the rotary table with the limit switches on the TAT
NOTE: For instructions on using the rotary table with the limit switches on the TAT, click on the Instructions tab above and download the PDF MASSO Rotary Table Limit Switch Interference on the Tilting Angle Table.
Always wear safety glasses when operating machine tools.
Download PDF 8700 Instructions
Download PDF MASSO Rotary Table Limit Switch Interference on the Tilting Angle Table Instructions
Download PDF Troubleshooting CNC Rotary Table Problems
Download PDF CNC Rotary Table Maintenance Instructions
CNC Rotary Table in Action
Sherline Rotary Laser Scanning Table
Rotary Table Weight Capacity Specifications
|Horizontal orientation||50 lbs.|
|Vertical orientation||30 lbs.|
|Vertical rotational torque||6 foot/lbs. (meaning it can lift a 6 lb. weight when suspended 12″ away from the center of the rotary table)|
|Mechanical backlash||0.2° or less|
Rotary Indexer Specifications
|Table Size||4″ diameter by 2″ height|
|Part mounting Provisions||Center thread including chuck adapter and 4 T-slots|
|Rotation Speed||1°/ sec to 50°/sec maximum (programmable in 1° increments)|
|Resolution||28,800 steps per revolution (±.006° per step)|
|Stepper Motor||120 oz-in, 2 Amp, NEMA 23 Frame size, 400 steps per revolution|
|Power Supply Transformer||Input: 120 VAC 60 Hz 38 W; Output: 24V, 1000 mA|
*NOTE: If you need a metric equivalent for the 10-32 thread, you can use a 5 x .8mm thread. If the fit is too tight, you can retap the 10-32 holes with a 5 x .8mm tap, and the new threads should be fine.
|3058||4-Jaw Hold Down Set Assembly||1|
|37090||Rotary Table Chuck Adapter, 3/8-16 to 3/4-16||1|
|37100||Rotary Table Base||1|
|37110||Rotary Table Top||1|
|37121||CNC Rotary Table Worm Housing (Not sold separately)||N/A|
|37131||CNC Rotary Table Worm Shaft (Not sold separately)||N/A|
|37122||CNC Rotary Table Worm Housing Assembly (P/Ns 37121, 37131)||1|
|37123||CNC Rotary Table Coupling||1|
|37124||CNC Rotary Table Coupling Adapter||1|
|37200||Button Head Screw, 10-32 X 3/8″||2|
|37210||Hold Down Tab||1|
|37220||Button Head Screw, 6-32 X 1/4″||1|
|40330||10-32 X 5/8″ SHCS||2|
|40510||SHC Screw, 10-32 X 3/8″||1|
|40520||Cup Point Set Screw, 10-32 X 3/16″||4|
|40540||Cone Point Set Screw, 5/16-18 X 3/4″||1|
|40670||10-32 X 1/2″ SHCS||2|
|12050||SHC Screw, 8-32 X 3/8″||4|
|87510||CNC Rotary Table Stepper Motor Mount||1|
|67127||Stepper Motor w/Flat & Plug Assembly, 2 Amp, 100-oz., NEMA #23 frame-size||1|
|67126||High-Torque Stepper Motor (Optional upgrade), 2 Amp, 191-oz., NEMA #23 frame-size||1|
|87041||120 VAC power supply (24 VDC, 1 amp output)||1|
|87100||Control unit with keypad/electronics||1|
|87250||Motor-to-keypad 6′ extension cable||1|
|87350||Remote (limit) switch/daisy-chain 1/2 cable||1|
Click the P/N below to download a zipped version of the IGS 3D CAD file. You will need to extract the zip file before viewing the IGS file.
8730 3D IGS model
You need an IGS viewer to view .igs files. CLICK HERE to download a FREE IGS viewer.