bearing connection in Creo Simulate

For Creo simulate structure, see this video. This is for a cylinder/shaft bearing scenario with 1 rotational DOF.

https://www.youtube.com/watch?v=fEtSQKcdyh0 

If you are asking about Creo Mechanism Dynamics, then:

Not enough information. There are different kinematic definitions of a bearing connection i.e., planar bearing, roller, spherical.

You need to think in terms of kinematic constraints and not physical connections between parts as you see them on actual assemblies. You will need to create joints in mechanism do constrain degrees of freedom that represent the kinematic connection.

As an example, a radial ball bearing rotating about a fixed shaft can be modeled with a pin connection kinematically. It has 1 rotational degree of freedom. 

Measures of connections:

https://support.ptc.com/help/creo/creo_pma/r9.0/usascii/index.html#page/simulate/mech_des/components_for_bearing_joints.html