Required a PMDC motor

Hey guys,
Need a suggestion about the availability of the motor about specification given below.

  1. PMDC motor of about 18-36V
  2. Power rating between 300-500W
  3. RPM Min. 8000
  4. CCW direction of rotation (optional)
  5. Torque 0.358-0.596 N.m

Unfortunately RobotShop does not offer such a motor at this time. The motors we offer go up to 12V. Perhaps someone from the community might have some ideas.