Cage Freewheels SF|Suma

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Cage Freewheels SF

The theoretical nominal torque applies only for ideal concentricity between the inner and outer ring.
The maximum transmissible torque is 2 times the specified nominal torque. See page 14 for determination of selection torque.

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Product Detail

Features
Cage Freewheels SF are sprag freewheels to be
installed between customer-supplied inner and
outer rings.
The freewheels SF are used as:
➧ Backstops
➧ Overrunning Clutches
➧ Indexing Freewheels
In addition to the standard type, two other
types are available for extended service life.
Nominal torques up to 93 000 Nm.

Mounting
The lateral guidance of the Cage Freewheels
can be effected either by a shoulder on the
outer ring or by guard rings or guard discs
which are fixed in the outer ring.
Torque transmission capacity can be increased
if several cages are arranged side by side. In this
case please consult with RINGSPANN on trans-
missible torques.
Please note the technical points on page 118
regarding the sprag tracks.

Example for ordering
Freewheel size SF 44-14,5, standard type:
• SF 44-14,5 K

Sizes of Cage Freewheels SF

Different types of Cage Freewheels SF

Freewheel Size	Type	Nominal t orque M_N Nm	Type	Nominal t orque M_N Nm	Type	Nominal t orque M_N Nm	Sprag lift-off at outer ring speed min^-1	J mm	D mm	B mm	K mm	Sprags Quantity	Weight kg
SF18-13,5	J	66						18,80	35,47	13,5	50	10	0,04
SF23-13,5	J	120						23,63	40,29	13,5	55	12	0,04
SF27-13,5	J	160	JT	160	JZ	100	3 600	27,78	44,42	13,5	65	14	0,05
SF31-13,5	J	170	JT	170	JZ	110	3 400	31,75	48,41	13,5	70	12	0,04
SF32-21,5	J	400						32,77	49,44	21,5	65	14	0,07
SF37-14,5	K	270	KT	270	KZ	210	2 900	37	55	14,5	75	14	0,06
SF42-21	J	720						42,10	58,76	21	85	18	0,09
SF44-14,5	K	500	KT	500	KZ	400	2 250	44	62	14,5	90	20	0,08
SF46-21	J	840						46,77	63,43	21	90	20	0,10
SF50-18,5	K	680	KT	680	KZ	580	2 250	50	68	18,5	90	20	0,10
SF56-21	J	1 050						56,12	72,78	21	100	22	0,11
SF57-18,5	K	950	KT	950	KZ	800	2 000	57	75	18,5	105	24	0,13
SF61-21	J	1 300	JT	1 300	JZ	1 150	1 550	61,91	78,57	21	110	26	0,14
SF72-23,5	K	2 100	KT	2 100	KZ	1 850	1 550	72	90	23,5	135	32	0,23
SF82-25	K	2 300	KT	2 300	KZ	2 100	1 450	82	100	25	140	36	0,26
SF107-25	K	3 300	KT	3 300	KZ	3 100	1 300	107	125	25	170	48	0,35
SF127-25	K	4 900	KT	4 900	KZ	4 600	1 200	127	145	25	210	56	0,40
SF140-50	S	13 600	ST	13 600	SZ	10 500	950	140	180	50	260	24	1,70
SF140-63	S	18 000	ST	18 000	SZ	14 000	800	140	180	63	260	24	2,00
SF170-50	S	17 000	ST	17 000	SZ	13 500	880	170	210	50	290	28	1,95
SF170-63	S	23 000	ST	23 000	SZ	18 500	720	170	210	63	290	28	2,40
SF200-50	S	23 000	ST	23 000	SZ	18 500	820	200	240	50	325	36	2,50
SF200-63	S	29 000	ST	29 000	SZ	23 500	680	200	240	63	325	36	3,10
SF230-63	S	37 000	ST	37 000	SZ	29 500	650	230	270	63	360	45	3,90
SF270-50	S	35 000	ST	35 000	SZ	29 500	720	270	310	50	410	48	3,40
SF270-63	S	44 000	ST	44 000	SZ	37 000	600	270	310	63	410	48	4,20
SF340-50	S	45 000	ST	45 000	SZ	43 000	640	340	380	50	510	60	4,20
SF340-63	S	67 500	ST	67 500	SZ	57 500	540	340	380	63	510	60	5,20
SF380-50	S	57 000	ST	57 000	SZ	48 500	610	380	420	50	550	63	4,40
SF440-63	S	93 000	ST	93 000	SZ	80 000	470	440	480	63	640	72	6,20