Grewcock joined Bath from Saracens in 2001
Bath lock Danny Grewcock has received a seven-week suspension for stamping on Ulster's Stephen Ferris' arm in Saturday's Heineken Cup match.
The second-rower was found guilty of the offence during Bath's 28-10 defeat at home following a European Rugby Cup disciplinary hearing in Dublin.
The stamp was deemed "mid-range in the level of seriousness".
The England international was banned for two weeks in November last year for striking Neil de Kock of Saracens.
Grewcock was red carded for the stamp in the 32nd minute as Bath crashed out of the Heineken Cup following the defeat.
The 37-year-old has a history of disciplinary problems which the independent judicial officer, Jean-Noel Couraud, took into consideration when delivering the punishment.
Grewcock is banned until 13 March 2010.