National 49.5 D Rotary Table

Description
Spec Typical Value / Range
Opening (table bore) ~ 49.5 in (≈1,257 mm)
Static Load Rating ~ 1,000 short tons (≈907 metric tons) for hydraulic versions; ~ 800 short tons for some electric drive versions.
Max Torque On similar size “RTSS 49½-H” (hydraulic drive) ~ 33,190 lbf-ft (≈45 kNm)
Max Speed / Operating Speed Usually low continuous speed when loaded; maybe 15-20 rpm. Hydrostatic/hydraulic or gear-driven.
Dimensions & Weight These tables are large and heavy: Length, width, height in the order of several meters; weights often 15,000-25,000 lbs (or more) depending on design.

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