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87105 CNC Rotary Indexer


CNC Rotary Indexer(cables not shown)

SKU: 87105 Category:

Product Description

About the CNC Rotary Table Indexer

The 87105 CNC Rotary Indexer allows you to convert your 8730 CNC Rotary Table to the 8700 Rotary Table with Indexer. This indexer is specific to the rotary table, and should not be confused with the linear controllers for the X-, Y-, or Z-axes e.g. P/N 8800/8810  or P/N 8850/8855.

All entries are made from this simple keypad. No separate computer is needed. The Rotary Indexer includes the microprocessor unit with numeric input keypad, 115 VAC power source, and all necessary connecting cables.


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.

Other Purchasing Options:

3750-LAZ Laser Engraving Tilting Angle Table
8700 CNC 4″ Rotary Table Indexer
8730 CNC Rotary Table with Stepper Motor

The improper use of machine tools and their accessories can result in serious injury. Before using this tool, thoroughly read the instructions and make sure you understand its proper and safe use.


Always wear safety glasses when operating machine tools.

Download PDF 8700 Instructions

Instructions PDF Download

Power Supply Input: 115 VAC 50/60 Hz, Output: 24V, 1 Watt
Speed 1″/min. to 25 in/min (programmable)
Distance from 0.0005″ to 99.9995″ in steps of 0.0005″
Backlash Compensation Programmable
87041 120 VAC power supply (24 VDC, 1 amp output)
87250 Stepper motor-to-control box 6’ extension cable
87350 Single 5-pin mini-DIN limit switch cable or ½ of daisy-chain cable
87100 Rotary controller/keypad unit complete