Product Details

Encoder Couplings

Available in a Variety of Styles!

Magnetic, flexible, and disc options available
Available in both metric and inch sizes
Electrical isolation available on certain models
Perfect solution to pair with your encoder
Keeps your encoder running longer
Easy and simple installation

Description

Avtron Encoders offers a wide range of different couplings to pair with your shafted encoder. Choose from magnetic, flexible helical, and flexible disc couplings depending on your need and application.

To pick the coupling you need, start by looking at your encoder model and application. Helical flexible couplings work best for light mill duty encoders with small amounts of misalignment. For more misalignment in light duty applications, shift to magnetic couplings. For harsher environments (even with large misalignment), look at our selection of flexible disc couplings to find the right product that you need. Then find the right size you need to mate with your encoder and motor. We offer couplings in both metric and inch sizes to fit any kind of shaft.

Couplings are the perfect way to help protect the life of your encoder. Shaft run-out, or "wobble" can cause excessive wear and tear on the bearings in your encoder, which can destroy the encoder and cause costly downtime for your business. Our couplings help to protect from shaft run-out by absorbing the excessive loads and forces that it causes.

Don't let shaft run-out destroy your encoder investment, order a coupling today!

Specifications

Magnetic Couplings
Weight:

03 Models (Coupling Half): 0.22 Lbs. (0.10 Kg)
06 Models (Coupling Half): 0.32 Lbs. (0.10 Kg)
Keyway: Only available on 11 mm and 12 mm

Flexible Helical Couplings
Material: 2024-T3.51 Aluminum w/ MIL A8625F Type II Black anodize
Isolator Insert: G10 glass filled phenolic
Clamp Screws:

Screw Size: 6-32

Torque: 34 in.lbs.
Screw Type: 120° apart; hex socket steel/black oxide finish

Flexible Disc Couplings
Hub and Center Material: Anodized Aluminum
Rivet and Washer Material: Brass
Disc Material: Stainless Steel
Screw Type: 18-8 Stainless Steel
Max Temp.: 250° F (120° C)

More Advantages

Protects encoder bearings from excessive torque loads caused by run-out

Markets & Applications

Industry	Mining	General	Wind Power	Pulp & Paper	Oil & Gas	Marine	Metals	Machinery	Crane & Hoist
Light Mill Duty HS4 Encoder Programming Tool Cables and Connectors Encoder Couplings RUSH AV4 AV25 HS25A AV6A HS6A K661 AV6M AV4 HS35A AV20
Mill Duty M185 Cables and Connectors Encoder Couplings AV32 HS35M HS6M K661 M3 HS35X
Heavy Mill Duty XRB3 AVSK Cables and Connectors AV56S XR45 AV44 AV45 AV56A XR5 XR12 AV85A HS45 K661 XP5 XR115 XR125 XR4F XR56A XR850 XR85A AV115 AV125 AV67A HS44 AV850 SMT1
Severe Mill Duty XRB3 Cables and Connectors Encoder Couplings AV5 AV30 XR5 AV12 XR12 HS40 K661 M6C XP5 XPH1 XPH8 XR485 XR685 M7 AV685 AV485 AV30B

Accessories

Cables and Connectors

PRODUCT GLOSSARY

Axial Shaft Movement

Motor shaft movement in or out, relative to the ends of the motor. Often motors that use roller or sleeve bearing construction have more axial shaft movement. Most Avtron modular encoders tolerate +/- 0.050" of axial movement maximum. Use hollow shaft encoders for high axial movement motor styles, such as MD motors. Most competitors� modular encoders tolerate much less axial movement than Avtron products.
Coupled/Coupling

Refers to a flexible device that is used to link a solid shaft encoder to the shaft to be monitored. Avtron strongly recommends isolated, flexible disk style couplings in heavy duty applications to maximize encoder bearing life. For light mill duty applications, flexible helical couplings are a great option. If there's a large amount axial shaft movement or misalignment, shift to magnetic couplings.
Light Mill Duty

Light Mill Duty encoders are designed for industrial applications but must be protected from contamination, temperature cycling, and physical force, including shock, vibration, and bearing loads. Examples include AV20, AV25, HS25A, and HS35A models.
Motor Shaft Currents

The high-speed switching of variable frequency drives that is used to control the speed of motors often produces current which flows from the motor shaft to ground, or from end-to-end of the motor. These current are highly destructive to both motor and encoder bearings. Preventing shaft current damage is essential. Most Avtron hollow shaft encoders include features to prevent motor shaft current damage. For more information: http://www.avtronencoders.com/knowledge-base/eliminating-damage-from-motor-shaft-currents-through-tachometers-and-encoders or visit Wikipedia: http://en.wikipedia.org/wiki/Shaft_voltage
Shaft Current

The undesirable electrical current flow common to motors controlled by variable speed drives. This current attempts to circulate within the motor or discharge to ground. Avtron encoders are protected against shaft currents.
Shaft Runout

The wobbling motion produced by a shaft that is not perfectly true and straight. Shaft runout is often abbreviated T.I.R. (Total Indicated Runout).
Solid Shaft

Solid Shaft encoders are coupled to the shaft to be measured. The solid shaft encoder body is typically C-Face mounted using a flange adapter, or some models can be foot mounted.