The "6002 2Z C3" designation typically describes a deep groove ball bearing. Here's a breakdown of what each part of the designation means:

6002: This is the basic designation for a deep groove ball bearing in the 6000 series. It indicates the bearing's size and type.

2Z: This indicates that the bearing has metal shields on both sides to protect against dust and debris.

C3: This indicates the internal clearance of the bearing. C3 clearance is greater than normal clearance, allowing for expansion due to temperature variations or slight misalignment.

The dimensions you provided, 15 x 32 x 9mm, refer to the inner diameter, outer diameter, and width of the bearing, respectively.