The RSP Swivel tool changer STC350 needs regular maintenance to continue to perform optimally. This locking ball is a part of the STC350-8E. Under normal operating conditions this should be every 18months (more frequently for harsh environments).
Locking Ball 20mm 2213874-20
Item 10 in the picture – Qty 12
Part of the STC350
STC350 Swivel Tool Changer part Numbers P0605, P0607, P0695A,