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Figure 12
A cast stainless steel frame with optimized strength-to-weight ratio hosts the axial spherical roller bearing making the 120° horizontal rotation possible. The bearing also allows for a small vertical rotation/horizontal tilt created when the arm is lifted prior to rotation in the horizontal plane. The joining structure is a cast stainless steel focal point adjustable platform resting on a 3000 kg granite support. The steel frame houses the collimator and gratings creating a common reference. The focal point adjustment platform also acts as base support for the manipulator frame. |
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