Sydney veteran Kieren Jack says there's no confusion at his club around tackling interpretations in the AFL.

The spotlight has been shone on tackling again after round 20, with Collingwood's Brodie Grundy suspended for an incident that left North Melbourne forward Ben Brown concussed on Saturday night.

Brown had both arms pinned by the Magpies' ruckman, and was taken to hospital for observation after his head crashed heavily into the turf at Etihad Stadium.

It came just a week after Geelong superstar Patrick Dangerfield was ruled out of the Brownlow Medal race after being banned for one game for a similar tackle on Carlton ruckman Matthew Kreuzer.

Several other tackles across the round were assessed by the Match Review Panel but not penalised, leading some to question the clarity of the issue.

Jack has been one of the Swans' most ferocious tacklers across his 224-game career thanks to his rugby league upbringing, and while he admitted he hadn't seen footage of the Grundy tackle, he said he and his teammates are well aware of their requirements as players.

"There have been so many different rule changes with what you can and can't do (when tackling)," he said on Tuesday.

"I think that what players are aware of is that any sort of slinging (a player) to the ground or any dumping action, is going to be heavily scrutinised.

"The tough part is when you want to pin an arm, sometimes you can't see where the ball is, and whether they've disposed of it or not, and that’s the delicate issue.

"Whether that takes away the physical element of the game, who knows?

"There's certainly an element where you can still tackle hard but you don't have to dump and sling them to the ground."

Jack said that the Swans consistently review and re-wire their tackling techniques to make sure everyone at the club is up to date with the latest rules, and the high-profile cases of Grundy and Dangerfield over the past fortnight hasn't changed that approach.

"We do it all the time, (and talk about) what's legal and what's not," he said.

"In the end you get free kicks for and against you and it can cost you, so we're constantly aware of that.

"I think that’s been the key to come out of the weekend's game, that any type of slinging or motion like that you're going to get penalised for it."