The weight without the servo is around 0.11 lbs.
A standard Hitec servo such as the HS-422HB weighs 0.1lbs (~0.21lbs combined)
This depends on how far away you grip the object and which servo you choose. To get an idea of the strength, you need to know the torque which the servo can provide, then multiply that torque by the distance between the axis of rotation and the point at which the object is gripped.
In what direction? If you want to lift an object with it, the force is against gravity, so it’s hard to say which component will break first (we have not done any load tests on the hand).
Please clarify - do you want an operating angle or maximum opening?
Yes, it can be assembled with only one servo, though there will be a big area which is empty. The second servo allows it to be connected to a Lynxmotion C-bracket, which can then be connected to other mechanical structures or servos. The gear material (plastic or metal) won’t have much of an impact on this gripper.
That’s great…probably. I guess that saves me money buying plastic SG?
I am considering this vs another Makeblock gripper. I think (based on theory) I’ll probably be able to lift the arm/RH-01 with a standard MG servo. I ordered a custom variant via Adafruit to see if the heavier arm works.
I am thinking about making the other hand a RH-01 because my gripper is vertical.
I’ll leave a picture here of the installed RH-01 when it’s finished