Steady Rest are normally used efficient machining of long slender shafts. On conventional steady rest three screws 120o apart are adjusted manually. This type of centering process is not reliable and depends on operator’s skill.
FAR self centering steady rest work on an entirely different principle. Three rollers hold the work piece at point approx 120o apart. These rollers move such that they always inscribe concentric circles between them. This feature along with the internal compensating system prevents the dislocation of work piece center under changing clamping pressure. This results in high centering accuracy By mounting accordingly these steady rests can be used for turning outside diameters, inside diameters, facing, drilling, grinding, induction hardening etc.
Steady rest can be operated either hydraulically or pneumatically with the only difference being the clamping cylinder bore.
In FRU series the clamping cylinder is fixed as axial extension at the rear end. With FRU-B series the cylinder is fixed to the side of the steady rests to save mounting space
資料來源：FENWICK AND RAVI 、網址: http://www.far.co.in、Email : firstname.lastname@example.org、電話 : 80-23254935、傳真 : 80-23453949、地址 : 10/3 Lakshmipura main Road, Chikkabanavara post, Abbigere Bangalore-560 090 India