What is an external retaining ring?
External retaining rings are connecting pieces that fit onto groves on the outside of shafts and attach parts of an assembly to the shaft.
Where would you use an external retaining ring?
These axially installed rings are often used in external applications to secure parts on grooved shafts, pins, or studs. The protruding section of the ring provides a shoulder for retaining parts, reducing cost of machining shoulders.
How do you size a retaining ring?
Clip diameter — Ring size is determined by measuring the clip’s free diameter, or the diameter of the clip prior to installation. Internal retaining rings are measured by their outer diameter, while external rings are measured by their inner diameter.
What is external retaining ring groove?
External retaining rings (also known as “external snap rings”) sit in the grooves on the exterior of shafts of any size. The areas of the ring that protrude out from the shaft hold it in place.
When should you use a retaining ring?
Retaining rings are used to hold components onto a shaft or into a bore. The smooth, round finish of most shafts or bores makes them difficult to attach to with alternative methods, whereas retaining rings clamp around them and create a shoulder that keeps parts in place.
How do I know what size my external circlip is?
How Do You Measure External Circlip Size? When measuring the size of an external circlip, you should measure the nominal size of the groove diameter. Do not measure the shaft diameter as this will result in an inaccurate measurement when comparing external circlip sizes.
What is the difference between a snap ring and a retaining ring?
There really isn’t a difference. Snap-ring and retaining ring such as # 410-21 are two names for the same thing. If your tail light looks like # ST40RB then use # A40SRB.
What is the difference between internal and external retaining rings?
Internal retaining rings fit into a housing or bore. External retaining rings fit over a shaft or pin. They often have prongs that grip shaft or housing bore. These rings are also called self-locking.
What is din471?
Note:DIN 471 circlips are retaining rings mounted in a groove on a shaft OD. They withstand high axial forces between machine elements (e.g. bearings) and the groove in which the ring is mounted.
