Slip ring
Used in high speed dome camera,rotary door,packing machine and so on.

 Slip ring

The slip ring can be used in any electromechanical system that requires unrestrained, continuous ratation while transmitting power and data fron a stationary to a rotating structure. The slip ring is also called a rotary electrical interface,commutator, collector,swivel or an electrical rotary jiont. They have been  widely used in domains as closed circuit monitor, automation robots, electric  power, safe defense, military, factory automation, medical apparatus etc

models explanation for capsule slip rings

HM-M0XX-Y

 HM stands for company code name 

M stands for capsule  type

0XX: means the  outer diameter of capsule is XX mm;

Y: stands for the number of rings