VSI. Means vertical shaft impactor.This machines are used as crushers for crushing boulders and rocks as agrregate and crush sand which known as manufactured sand. Regarding full data of VSI machines you can search in google. Plenty of VSI machinaries available. It is advisable to check in google regarding specification. Capacity. Space require to install machine. Etc etc
VSI vertical shaft impact crusher is next generation agrregate crushing machine, which produce aggregates same like jaw crusher but due to vertical shaft impact, they produce less flaky, elongated aggregate and max production have shape towards cubical or rounded.
If anvil setting gets disturb or not set properly a VSI crusher can produce aggregates like jaw crusher i.e.- flaky and elongated.