Rotary index table options include fixed cam-driven indexers and programmable servo-driven systems. For engineers specifying equipment for high-volume automotive welding, fixed cam-driven indexers are the standard specification for reliability, long daily operation and zero-backlash performance.
Fixed cam-driven rotary index tables use a mechanical cam-and-follower mechanism to advance an output shaft through precise, repeatable indexing positions. This design delivers zero-backlash performance through purely mechanical operation. Motion Index Drives’ RT Series fixed indexers feature flame-hardened cam surfaces and a self-lubricating oil bath design, engineered for extended operation in demanding production environments.
Programmable servo-driven rotary index tables integrate a servomotor and motion controller to execute programmable motion profiles. This configuration provides flexible increments, bidirectional operation and compatibility with any mounting configuration. Motion Index Drives’ RTF Series achieves positioning accuracy up to five arc seconds and is suited for variable motion patterns or mixed-product production lines.
Three engineering factors determine continuous-duty performance in high-volume automotive welding:
Performance is documented across millions of cycles. A Motion Index Drives RT100/16 has been operating continuously since 2010, accumulating more than 70 million cycles at up to 20 hours per day, sometimes up to seven days a week. All original components remain in service and are verified to be operationally reliable.
Robotic integration is within the scope of these tables. Motion Index Drives engineered a custom RT400/4/300 with an integrated base mounted in the center stationary post of the index drive, designed for robotically applied coatings in an explosion-proof environment. The assembly operates as one unit, controlled by an open-loop VFD and explosion-proof AC motor, allowing it to remain in position across production runs.
Three operational variables determine which rotary index table option is correct for a given cell:
Cam-driven fixed indexers are the standard specification for high-volume, fixed-cycle environments where machine uptime and repeatable positioning accuracy are the primary requirements. Servo-driven programmable tables are the correct choice when increments must vary across production runs or when the line cycles mixed-product configurations.
When production requirements exceed standard configurations — extreme loads, high inertia, complex robotic integration or specialized operating environments — Motion Index Drives engineers custom rotary index tables for welding applications to specification.
Motion Index Drives manufactures fixed cam-driven and programmable servo-driven rotary index tables for standard and custom configurations. All equipment is manufactured under ISO 9001:2015 certification and backed by a five-year warranty with 24/7 technical support. Contact us today to request an appointment with an applications engineer to specify rotary index tables for automotive welding or other demanding production environments.
