Crankshaft Steady Rest

Steady Rest

With immense experience and expertise, we are able to manufacture, supply and export Steady Rest. Made of high quality raw material, these products are used for used for turning outside diameters, inside diameters, grinding, induction hardening, facing and drilling. Equipped with pneumatic and hydraulic motors, these products facilitate increased production and high centering accuracy. These products are packed in special packaging material in order to ensure their safe and secure transit. Steady Rest is available with us in different specifications in accordance to the clients' requirements.

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 operators 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.

Specifications:

• High centering accuracy.
• Provide replaceable sealing strip and provision for compressor air connection that prevent the of coolant and dirt to the body
• Automatic centering that reduces the cycle time and increased productivity.
• Have provision for centralized lubrication system in all steady rest
• Provide Actuating cylinder which have integral safety valve that ensure support of the work under sudden pressure drops.
• Based on special cam design, which is proved in the field
• Consist of Adjustable 3 piece chip guard for outer rollers with low reduction of clamping range
• It can be mounted either on slant or flat bed lathes
• made with Rigid and precisely bracket that ensure centering accuracy

This series is made for machines where the rear mounted cylinder may foul with the sheet metal enclosures or other machine enclosures To achieve this the actuating cylinder of the steady rest is mounted on the side of steady rest.

Standard Features:

• Safety Valve
• Provision for max opening feedback
• 1 set swarf guard 3-piece
• Provision for compressed air connection
• Provision for centralized lubrication

STEADY REST TYPE		FRU-B3	FRU-B3.1	FRU-B4	FRU-B5	FRU-B6	FRU-B7	FRU-B8
	A	348	356	480	6125	823	1001	1130
	B	308	316	437	500	709	8975	1019
	C	115	123	146	178	215	320	375
	D	135	135	240	270	330	440	500
	E	262	262	365	400	610/640	650	855
	F	290	290	400	450	680	710	930
	G	85	85	110	145	145	180	190
	J	52	52	67	80	83	112	110
	K	45	45	60	75	75	100	100
	L	25	25	25	29	29	32	32
	M	47	47	52	62	80	100	100
	N	25	25	32	36	43	55	60
	O	40	40	43	112.5	114	103.5	111
	P2	74	74	85	85	125.8	130	130
	P3	57	57	68	85	89.2	130	130
	R	117.5	124	172	209	290	398	402
	S	18	18	23	23	27	27	35
	T	199	198	246	325	383	405	487
	V	91.5	99.5	128	160	182	283.5	290
	Y	19	19	19	20	27	27	27
Centering range without chip guard.	U1	12	20	30	50	125	200	230
	U2	152	165	245	310	460	530	630
Centering range with 3 piece chip guard	U1	21	20	30	50	125	200	230
	U2	152	165	245	310	460	530	630
Cylinder Bare	d	80	80	100	100	130	150	150
	e	58	58	68	85	55	191	191
	f	27	27	39	40	50	50	50
	g	180	180	220	270	430	450	450
Hyd. Connection (BSP)	h	1/4	1/4	3/8	3/8	3/8	3/8	3/8
Operating pressure Min/Max	bar	8/60	8/60	8/60	8/80	8/70	8/70	8/70
Max. Clamp force/roller	daN	1000	1000	1500	2000	3000	4000	4000
Clamping press/roller at 15bar	daN	250	250	400	400	600	880	890
Centering accuracy over the whole clamping range	mm	0.04	0.04	0.05	0.06	0.05	0.08	0.08
Repeatability	mm	0.007	0.007	0.007	0.01	0.01	0.02	0.02
Max. Peripheral speed	M/min	800	8000	720	650	525	570	570
Weight Approx	kg	53	53	115	190	500	1000	1300

 Technical Specifications

Model		Holding Diameter
Rear Mounted cylinder	Side mounted cylinder	Min (mm)	Max (mm)
FRU1		04	64
FRU2	FRUB2	08	101
FRU3	FRUB3	12	152
FRU3.1	FRUB3.1	20	165
FRU3.2	FRUB3.2	50	200
FRU4	FRUB4	30	245
FRU5	FRUB5	45	310
FRU5.1	FRUB5.1	85	350
FRU6	FRUB6	125	460
FRU7	FRUB7	200	530
FRU8	FRUB8	230	630