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CAGES/RETAINERS
| The
retainer, also referred to as the cage or separator, is used to
separate and position the balls at equal intervals around the
bearing raceways. Retainers are available in two standard types,
according to the size and design of the bearing itself. The most
common is a 2-piece closed ball pocket design known as a ribbon
retainer. The crown retainer is a single piece open ball
pocket design. For most bearing sizes, the retainer type is as
shown in the individual bearing tables,
and cannot be specified by the user. However, for special applications,
please contact a Dynaroll engineer to discuss retainer options. |
|
| CAGE
TYPES |
|
J
TYPE RIBBON RETAINER The
closed pocket design of the ribbon retainer is the most common
type. The material used is 300 series stainless steel. For low
torque applications, a loose clinched ribbon retainer may be
available. |
|
| W TYPE CROWN RETAINER
The standard metal crown retainer is very
light weight, with specially coined ball pockets to reduce torque
and provide smooth running characteristics. Material used is 400
series stainless steel. |
  |
| T12 TYPE CROWN RETAINER
Plastic crown retainers have the highest
speed ratings of any standard retainer type, but have limited
availability. |
  |
RETAINER MATERIAL Retainer materials other than the standard 300/400 series stainless steel or plastic are available for specific applications. Please contact Dynaroll concerning availability and compatibility of different retainer types. |
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