Robotic Arm for BlueROV

Im also doing a project in wich I intend to use the M200 motors for a 2 dof arm. I see that some of you are interested in using Volz servos. They are good but quite expensive. They sent me this email:

“Attached please find our price list detailing all options for the DA 26 and DA 30. For the oil-filling-modification we charge an additional 620€ (including pressure proof connector as shown in DA 26 datasheet).
Being a research institute we can offer you a research discount of 30% on the servo prices.
Please let us know if you have any questions, we will be happy to assist.
Best regards,
Phillipp”

If you have any advances on your project please share it here.

I’m having trouble in finding a way for the motor to produce torque at zero speed. Can you help me?