DC Motor with Encoder

Notes on encoder wheels.
Six encoder wheels are available to allow you to make encoder assemblies of your designs. Wheels are made of 0.008 inch and 0.032 inch thick stainless steel. Accurately machined wheels make it easier for you to make encoders of your design.

Comparison of the two large encoders.

These encoders are 1.5 inches in diameter with 0.25 inch central holes.

The left encoder has 42 slots and the right has 20 slots.

If you are writing a control loop is is easier to use the 20 slot encoder on your motor.

The six different encoder disks that are available. The smallest encoder have a 3/16 inch hole in them. All other are 1/4 inch.

The encoders at 1.00 inch, 1.25 inch and 1.50 inches in diameter

Note: Hubs are not provided with encoders. You can make you own or..... You can order hubs from me when you know what dimensions you need. Send a sketch for a quote. A custom made hub is about $3.00.

Encoder plate slot counts are 12, 16, 20 and 26, 35, 42 slots per plate.

This encoder has a silver soldered hub on it. This tends to warp the encoder so all the hub are attached with super glue. Super glue works real well but can come apart under extreme mishandling. The units can be re-glued easily and are quite rugged when handled with minimal care.

Pricing.
Diameter   Holes     Price        Model Number
1.00             12           $3.00        ENC 100-12
1.25             16           $3.50        ENC 125-16
1.50             20           $4.00        ENC 150-20

1.00             26           $3.50        ENC 100-26
1.25             35           $4.00        ENC 125-35
1.50             42           $4.50        ENC 150-42

Add $1.00 for a standard hub. Standard hubs have holes that are 1/8th inch and 3/32 inch and 2mm (for the tiny encoders) in them.

If you order encoder wheels only and I can mail them in an envelope, there is no charge for postage and handling.

My experiments indicated that wheels like these are much easier to use than wheels with hundreds of slots in them.

The small number of slots in the encoders make it easier to write control loops because there is more time between the edges that have to be read.