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Integrated Freewheels FON

Integrated Freewheels FON are sprag freewheels without bearing support.

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Product Detail

Features

Integrated Freewheels FON are sprag freewheels without bearing support.

The freewheels FON are used as:

➧ Backstops

➧ Overrunning Clutches

➧ Indexing Freewheels

In addition to the standard type, two other types are available for extended service life and indexing accuracy.

Nominal torques up to 25 000 Nm.

Bores up to 155 mm. Many standard bores are available.

Application example

Integrated Freewheel FON 57 SFT as an over-running clutch, arranged on the main drive shaft of a packaging machine. The outer ring is connected to a creep drive by means of a gear wheel. This drive is used during set-up. In this operating state, the freewheel works in driving operation and drives the machine at a very low speed via the main shaft. In normal operation (freewheeling operation), the inner ring over-runs and the creep drive is automatically disen-gaged. The RIDUVIT® sprags give the freewheel an extended service life.

Mounting
Integrated Freewheels FON are without bearing
support. Concentric alignment of inner and
outer ring must be provided by the customer.
The permissible run out (T.I.R.) must be
observed.
The Integrated Freewheel FON is centered via
the outer track F on the customer attachment
part and bolted to this. The tolerance of the
pilot diameter of the attachment part must be
ISO h6.
The tolerance of the shaft must be ISO h6 or j6.

Lubrication
In the case of standard type and type with
RIDUVIT®, an oil lubrication of the specified oil
quality must be provided.
In the case of the type with sprag lift-off Z, at
speeds in excess of the sprag lift-off speed, no
special lubrication is required; the freewheel
functions maintenance-free. When operating
below the sprag lift-off speed, an oil lubrication
of the specified oil quality must be provided.

Example for ordering
Freewheel size FON 72, type with RIDUVIT® and
45 mm bore:
• FON 72 SFT, d = 45 mm

Sizes of Integrated Freewheels FON

Different types of Integrated Freewheels FON

Freewheel Size	Type	Nominal t orque M_N Nm	Max. speed Inner ring freewheels/ overruns min^-1	Outer ring freewheels/ overruns min^-1	Type	Nominal t orque M_N Nm	Max. speed Inner ring freewheels/ overruns min^-1	Outer ring freewheels/ overruns min^-1	Type	Nominal t orque M_N Nm	Sprag lift-off at outer ring speed min^-1	Max. speed Outer ring freewheels/ overruns min^-1	Inner ring drives min^-1
FON37	SF	220	2 500	2 600	SFT	220	2 500	2 600	SFZ	180	2 900	3 700	340
FON44	SF	315	1 900	2 200	SFT	315	1 900	2 200	SFZ	250	2 250	3 000	320
FON57	SF	630	1 400	1 750	SFT	630	1 400	1 750	SFZ	630	2 000	2 200	560
FON72	SF	1 250	1 120	1 600	SFT	1 250	1 120	1 600	SFZ	1 250	1 550	1 850	488
FON82	SF	1 900	1 025	1 450	SFT	1 900	1 025	1 450	SFZ	1 700	1 450	1 600	580
FON 107	SF	2 800	880	1 250	SFT	2 800	880	1 250	SFZ	2 500	1 300	1 350	520
FON 127	SF	6 300	800	1 150	SFT	6 300	800	1 150	SFZ	5 000	1 200	1 200	480
FON 140	SF	10 000	750	1 100	SFT	10 000	750	1 100	SFZ	10 000	950	1 150	380
FON 170	SF	16 000	700	1 000	SFT	16 000	700	1 000	SFZ	14 000	880	1 000	352
FON 200	SF	25 000	630	900	SFT	25 000	630	900	SFZ	20 000	680	900	272

The maximum transmissible torque is 2 times the specified nominal torque. See page 14 for determination of selection torque.
The specified maximum speeds apply for installation conditions as given with Complete Freewheels. Knowing the actual installation conditions higher speeds can be permitted under some circumstances.

Freewheel Size	mm	Bore d Standard mm mm		max. mm	A mm	B mm		D mm	F mm	G**	J mm	L mm		P mm	T mm	Z**		Weight kg
FON37	20			25*	18,5		25	85	55	M 6	37		35	0,5	70		6	0,8
FON44	25			32*	18,5		25	95	62	M 6	44		35	0,5	80		8	1,0
FON57	30	35	40	42*	23,5		30	110	75	M 8	57		45	0,5	95		8	1,7
FON72	45			55*	29,5		38	132	90	M 8	72		60	1,0	115		12	3,0
FON82	50	55		65*	31,0		40	145	100	M 10	82		60	1,0	125		12	4,0
FON 107	70			85*	33,0		45	170	125	M10	107		65	1,0	150		12	6,0
FON 127	90			100*	58,0		68	200	145	M12	127		75	1,0	180		12	11,5
FON 140	100			115*	58,0		68	250	180	M 16	140		75	1,0	225		12	17,0
FON 170	120			140*	60,0		70	290	210	M 16	170		75	1,0	258		16	24,0
FON 200	140			155	73,0		85	320	240	M 16	200		85	1,5	288		16	34,0