CNC-Ready Rotary Table with Reverse Motor Mount

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Out of stock

Product Description

About the Sherline CNC-Ready 4″ Reverse Rotary Table

Sherline has taken its manual 4″ rotary table with reverse mount and applied a stepper motor mount with dampened coupling in place of the handwheel. The mount accepts a NEMA #23 frame size stepper motor for CNC control. This allows the table to be used as a 4th axis with CNC systems that have the capability to drive a rotary axis.

The reverse rotary table is perfect for using on the tilting angle table. The reverse mount allows access to the handwheel from the front of the machine (see photo below). If you used a standard rotary table in the previously described set-up the handwheel would be mounted facing the backside of the X-axis.

NOTE: When the worm housing is reversed to the opposite side, a clockwise rotation of the handwheel or stepper motor will result in a counter-clockwise rotation of the rotary table.

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3700-OP Rotary Table set up on a 3750 Tilting Angle Table (manual version is shown for reference). Click on image for a larger view.

Weight Limitations for Continuous Use

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 continuous load. Click on the Video tab above to see examples of different weights and uses for our rotary tables.

NOTE: CNC-ready machines cannot be operated manually unless double-shaft stepper motors are installed.

Included Parts:

  • 1 Hold Down Set
  • 1 37090 Chuck Adapter

If you would like to convert your current rotary table to the reverse set-up you can send it back to Sherline and we can make the change for a $104.25 charge (includes parts and labor). Just fill out the RMA Request form to received instructions on how to send items back to us.

NOTE: Because components of the table are ground as a set during production, the P/N 3700-OP rotary table cannot be upgraded to the P/N 3700-CNC-OP version later on. A new rotary table with stepper motor worm housing must be purchased.

For in-depth details about the Sherline CNC-Ready 4″ Rotary Table CLICK HERE.

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.


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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.

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Always wear safety glasses when operating machine tools.

Download PDF 3700-CNC Ready Instructions

Instructions PDF Download

Download PDF 3700 Instructions

Instructions PDF Download

Download PDF Troubleshooting CNC Rotary Table Problems

Instructions PDF Download

Download PDF CNC Rotary Table Maintenance Instructions

Instructions PDF Download

Download PDF MASSO Rotary Table Limit Switch Interference on the Tilting Angle Table Instructions

Instructions PDF Download

CNC Rotary Table in Action

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
3700-CNC-OP CNC-Ready Rotary Table with Reverse Mount

*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.

Part No. Description Quantity
10930 3/8″ Bearing 2
30561 10-32 T-nut 2
3058 4-Jaw Hold Down Set Assembly 1
37097 Rotary Table Chuck Adapter, 5/8-24 to 3/4-16 with 15/32″ Through-hole 1
37100 Rotary Table Base 1
371102 Nickel-Plated Rotary Table Top 1
37121-OP CNC Rotary Table Worm Housing (Not sold separately) N/A
37131 CNC Rotary Table Worm Shaft (Not sold separately) N/A
37122-OP CNC Rotary Table Worm Housing Assembly (P/Ns 37121-OP, 37131) 1
37123 CNC Rotary Table Coupling 1
37124 CNC Rotary Table Coupling Adapter 1
37150 Oil Plug 1
37160 Preload Nut 1
37170 Lock Pin 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
40050 Handwheel Assembly 1
40330 10-32 X 5/8″ SHCS 2
40420 Headstock Bearing 1
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
40660 Washer 1
40670 10-32 X 1/2″ SHCS 2
50120 Pointer 1
12050 SHC Screw, 8-32 X 3/8″ 4
87510 CNC Rotary Table Stepper Motor Mount 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.
3700-CNC-OP Reverse Mount CNC-Ready 3D IGS model
You need an IGS viewer to view .igs files. CLICK HERE to download a FREE IGS viewer.