No they will have to be changed, which is a pig of a job. Usually I try local breakers and change the complete hub. Worth checking its not simply you King pin bearings first though. Wheel bearings are about £70 + vat and so far I haven't found any after market ones cheaper. Apparently Vitara ones can fit but I've heard mixed feed back on their performance. You will also need a special hub tool (avail from bits for Vits at £25 I think) and a hydraulic press. If its King pin bearings they are about £25 each + from suzuki or £10 from a bearing stockist and all four can be repalced in an afternoon - I know - I've just done mine.
ps if you have run slightly wider wheels with your muds and used the 'clip' on style balence weights, the weights catch on thesteering arm lug and that knackers your bearing. I use stick on balence weights.