E-RING
E-RING Structure

E-RING

An E-RING is a shaft-retaining component shaped approximately like the letter “E.” It may also be referred to as an E-Type Retaining Ring. Installed into an annular groove on the outside of a shaft, it helps limit the axial movement of components such as gears, bearings, pulleys, and bushings.

Product Name: E-RING / E-Type Retaining Ring
Product Structure: Three-prong open structure shaped approximately like the letter “E”
Primary Functions: Axial positioning, stopping, and preventing components from becoming detached
Installation Position: Annular groove on the outside of a shaft
Applicable Shaft Diameter: Selected according to shaft diameter and retaining-ring groove dimensions
Groove Dimensions: Groove diameter, groove width, and groove depth specified according to product requirements
Thickness: Selected according to shaft diameter, load, and installation requirements
Materials: Spring steel, carbon steel, stainless steel, or other specified materials
Heat Treatment: Applied according to hardness, elasticity, and fatigue-resistance requirements
Surface Treatments: Phosphate coating, black oxide, zinc plating, nickel plating, passivation, or other specified finishes
Applicable Standards: DIN, JIS, ANSI, or customer-specified standards
Production Methods: Precision stamping, heat treatment, and surface treatment
Packaging: Bulk packing, bag packing, box packing, or packaging sorted by size

Category:

Fast Axial Retention

An E-RING can be pressed into a pre-machined groove from the side of the shaft without having to slide it on from the shaft end, making it suitable for mechanisms that have already been partially assembled.

Stable Three-Prong Engagement

The three internal contact prongs engage with the shaft groove to create multiple retaining points, helping restrict axial movement and prevent components from slipping off the shaft.

Saves Installation Space

The thin-profile structure occupies relatively little axial space and can reduce the need for nuts, washers, and other retaining components.

Convenient Assembly and Maintenance

E-RINGS can be installed and removed using retaining-ring tools or other suitable installation tools, making them suitable for high-volume assembly and equipment requiring periodic maintenance.

Wide Range of Applications

E-RINGS are commonly used in motors, gears, pulleys, bearings, home appliances, electronic equipment, automotive and motorcycle components, and automation mechanisms.

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