The chip breaker assembly has more “yield” for ease of feeding irregular thickness lumber at faster feed-speeds.
It is a roughing planer only. These are designed for rough mill operation, not cabinet shops.
It will typically run a 30-40HP motor; this one has 30HP.
It is a four roll machine but has large diameter rolls and cutterhead.
This one is equipped with the “Newman Quiet Cut” helical cutterhead.
It has 6 rows of individual carbide bits in a helical pattern to reduce noise.
Bits are like new in this machine.
The S-480 is a lower production single side machine that Whitney designed originally to go behind a facer.
By “lower production”, I mean it has a maximum feed rate of 120 fpm, as compared to up to 300 fpm on newer models.
This is still a highly productive planer.
It is one of very few single roughing models Whitney ever built.
It was designed to set in line to receive lumber that had been “faced” on either a Whitney S-600 or, more typically, a Porter 715A.
Weight – 6100 lbs, floor space – 62″x68″