Bei-sensors ES25 Incremental Encoder User Manual download pdf

Installation Instructions for ES Series encoders

1. Use a rigid mounting bracket with a 1.8” diameter center hole (for hub clearance) or spacers to locate the

encoder face at least ¼” from end of drive shaft. Allow space for shaft extender/reducer, if required. There

will be about 8 lbs attraction force between the encoder and hub.

2. Install magnetic hub on drive shaft with magnet side out. Adjust to maintain a 1/16” to 1/8” air gap between

the encoder face and the magnetic hub.

3. Tighten hub set screw to12 in-lb.

4. Secure the encoder to the mounting bracket with screws and flat washers.

NOTE

: The ES Series magnetic coupling can accommodate more misalignment but for best performance,

align the center axis of the encoder and the drive shaft within 1/8” parallel and 3 degrees angular offset.

IMPORTANT

: Allow sufficient air gap between encoder and magnetic hub to accommodate axial end play of

drive shaft during operation. Severe damage may result if rotating hub contacts the encoder housing.

Magnetic hub adjustment after the encoder has been secured (if needed):

1. Place a non-magnetic spacer between the encoder and magnetic hub.

2. Carefully loosen set screw and slide hub into final position.

3. Tighten set screw and remove spacer.

NOTE

: If the external hub accidentally gets stuck to the encoder during installation or adjustment, slide it

sideways to release. Do not pry against the flat face of the encoder

CAUTION: Be prepared for strong attraction of magnets that may cause the encoder or hub

assembly to move suddenly. Keep body parts and clothing from between the encoder and hub.

Keep workspace clear of metal chips and tools.

INSTALLATION EXAMPLES

HEX STAND-OFFS

BEI ES25 Encoder with

enclosed Magnetic Hub

Hex spacers to fit motor –

dep

end on shaft length, etc.

Motor or other

drive system

External Magnetic Hub –

required for encoder operation.

BEI accessory part

Air Gap between

housing and

External Magnetic

Shaft adapter –

examp

le: 5/8” to 1/4"

NEMA 5

6C ADAPTER

INSTALLATION

Motor or other

drive system

NEMA 56C adapter

Tel:805-968-0782 / 800-350-2727 | Fax: 805-968-3154 / 800-960

7230 Hollister Ave., Goleta, CA 93117 | www.beisensors.com

-2726

Specification No 02105 Rev 06/11

These commodities, technology or software if exported from the United States must be in accordance with the Bureau of

Industry, and Security, Export Administration regulations. Diversion contrary to U.S law is prohibited.

Summary of Contents

Page 1

Installation Instructions for ES Series encoders 1. Use a rigid mounting bracket with a 1.8” diameter center hole (for hub clearance) or spacers

Bei-sensors ES25 Incremental Encoder User Manual

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Bei-sensors ES25 Incremental Encoder User Manual

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