DISK-1 1 in. Transmissive Rotary Encoder Disk

DISK-1 Features

  • 1 in. outside diameter
  • Mylar film construction
  • 32 to 5,000 CPR
  • Index track option
  • Compatible with US Digital's EM1 and EM2 encoder modules

See more info below

Configure the DISK-1

DISK-1 Product Description

Restriction of Hazardous Substances

US Digital offers a wide variety of standard rotary encoder disks. They may be ordered as a stand-alone disk or as a hub disk. These rotary encoder disks are made from Mylar polyester film. This material allows for a wide temperature range.

The 32 CPR is available only in the No Index, EM1 Compatible option (NE). Other resolutions are available with or without an index track.

Mechanical alignment drawings for optical encoder rotary disks and optical encoder modules are available (see the EM1 and EM2 pages).

Product Specifications

View here or download the specifications


Inside Diameter (ID) tolerance ±0.004"
Outside Diameter (OD) 1" ± 0.010 in.
Thickness 0.007"
Temperature Range -40C to 100C


Title Date Description Download
Update to 1" and 2" Disks - PCN 6232 5/24/2018 This notice is to inform our customers of a minor disk design modification that is being implemented for standard 1" and 2" disks. This is a continuation of a change that was implemented for our index disks in 2015.

We are revising the text on the disk, adding the US Digital logo and a line that is used internally by our manufacturing group.

The change does not affect the quadrature or index tracks; therefore, it has no impact on form, fit, or function.


32 DISK-1-32-*-NE EM1-1-32-N    
50 DISK-1-50-*-NE EM1-1-50-N DISK-1-50-*-IE EM1-1-50-I
96 DISK-1-96-*-NE EM1-1-100-N DISK-1-96-*-IE EM1-1-100-I
100 DISK-1-100-*-NE EM1-1-100-N DISK-1-100-*-IE EM1-1-100-I
120 DISK-1-120-*-NE EM1-1-100-N    
200 DISK-1-200-*-NE EM1-1-200-N DISK-1-200-*-IE EM1-1-200-I
192 DISK-1-192-*-NE EM1-1-200-N DISK-1-192-*-IE EM1-1-200-I
250 DISK-1-250-*-NE EM1-1-250-N DISK-1-250-*-IE EM1-1-250-I
256 DISK-1-256-*-NE EM1-1-250-N DISK-1-256-*-IE EM1-1-250-I
360 DISK-1-360-*-NE EM1-1-360-N DISK-1-360-*-IE EM1-1-360-I
400 DISK-1-400-*-NE EM1-1-400-N DISK-1-400-*-IE EM1-1-400-I
500 DISK-1-500-*-NE EM1-1-500-N DISK-1-500-*-IE EM1-1-500-I
512 DISK-1-512-*-NE EM1-1-512-N DISK-1-512-*-IE EM1-1-512-I
540 DISK-1-540-*-NE EM1-1-540-N DISK-1-540-*-IE EM1-1-540-I
720 DISK-1-720-*-NE EM1-1-720-N DISK-1-720-*-IE EM1-1-720-I
800 DISK-1-800-*-NE EM1-1-800-N DISK-1-800-*-IE EM1-1-800-I
900 DISK-1-900-*-NE EM1-1-900-N DISK-1-900-*-IE EM1-1-900-I
1000 DISK-1-1000-*-NE EM1-1-1000-N DISK-1-1000-*-IE EM1-1-1000-I
1024 DISK-1-1024-*-NE EM1-1-1024-N DISK-1-1024-*-IE EM1-1-1024-I
1250 DISK-1-1250-*-NE EM1-1-1250-N DISK-1-1250-*-IE EM1-1-1250-I
2000 DISK-1-2000-*-IE EM2-1-2000-I
2048 DISK-1-2048-*-IE EM2-1-2048-I
2500 DISK-1-2500-*-IE EM2-1-2500-I
4000 DISK-1-4000-*-IE EM2-1-4000-I
4096 DISK-1-4096-*-IE EM2-1-4096-I
5000 DISK-1-5000-*-IE EM2-1-5000-I

*Represents the bore size

Additional Information

Product Notes

  • US Digital® warrants its products against defects in materials and workmanship for two years. See complete warranty for details.



Product Configurator

For pricing, this product requires configuration.

Begin by completing either Option 1 or 2 below. Questions? Contact our support team.

Option 1: Configure the Product

Use the configuration tool to provide information regarding your product needs. Not sure what to do or need additional assistance? Our support team is here to help.

We recommend enabling Javascript when using the product configurator.

Option 2: Enter the Product Part Number Directly

If you know your product part number, enter it in the following field. The part number format looks something like this: E5-5000-394-IE-S-D-D-3...

Our products are not currently available for direct online purchase. To place an order please contact us directly with your part number.

For purchasing or volume discounts, please configure the part above, then use the completed part number and contact us!


US Digital's mission is a commitment to quality and constant improvement. If you find an error to a product on this page, please let us know!

Compare Items (Max 3):