Internal Freewheels FD|bearing exporter|Suma

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Internal Freewheels FD

Internal Freewheels FD are sprag freewheels from Suma bearing exporterwithout an inner ring.

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Product Detail

Features
Internal Freewheels FD are sprag freewheels from Suma bearing exporter without an inner ring. The customer s hardened and ground shaft is used as the inner track.

The freewheels FD are used as:

➧Backstops

➧Overrunning Clutches ➧Indexing Freewheels

The standard type and type with P-grinding for increased service life and indexing accuracy do not have bearing support. In the case of the standard type, every second sprag has been be replaced by a cylindrical roller; this freewheel can accept radial forces.

Nominal torques up to 2 400 Nm. The torque is transmitted on the outer ring by press fit.

Application example

Two Internal Freewheels FD 40 CFR of standard type with bearing support as overrunning c lutches in the drive of the transport rollers in a p ackaging distribution unit. In normal opera tion, the transport rollers are driven by means of the freewheels that are working in driving operation. At the withdrawal station, the arriving packages can easily slip off as the drive is overrun by the freewheel (freewheeling oper ation).

Sizes of Internal Freewheels FD

Different types of Internal Freewheels FD

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	bearing support dynamic C N	Load rating of static C0 N	Type	Nominal t orque M_N Nm	J mm	B mm	D mm	K mm	Weight kg
FD12	CFH	11	4 225	4 250	CFR	6	4 225	4 250	7 600	4 200	CFP	5	12	16	34	45	0,1
FD15	CFH	16	3 875	3 925	CFR	8	3 875	3 925	7 800	4 200	CFP	7	15	20	37	50	0,1
FD20	CFH	28	3 375	3 450	CFR	14	3 375	3 450	8 320	4 200	CFP	12	20	20	42	55	0,1
FD25	CFH	48	2 900	3 050	CFR	24	2 900	3 050	10 700	5 600	CFP	21	25	20	47	60	0,1
FD30	CFH	75	2 525	2 675	CFR	36	2 525	2 675	12 900	7 000	CFP	32	30	20	52	65	0,1
FD40	CFH	160	1 900	2 150	CFR	71	1 900	2 150	15 000	8 400	CFP	71	40	22	62	80	0,1
FD50	CFH	260	1 475	1 775	CFR	120	1 475	1 775	18 400	11300	CFP	120	50	22	72	95	0,2
FD65	CFH	430	1 200	1 550	CFR	200	1 200	1 550	21 400	14100	CFP	210	65	25	90	120	0,3
FD80	CFH	650	950	1 350	CFR	300	950	1 350	23 800	17800	CFP	320	80	25	110	140	0,6
FD 105	CFH	2 400	800	1 175	CFR	1 100	800	1 175	48 600	45000	CFP	1 200	105	35	130	165	0,7

The maximum transmissible torque is 2 times the specified nominal torque. See page 14 for determination of selection torque.

The maximum speed values listed above apply to installation conditions as they are given for Complete Freewheels. If the actual installation conditions are known, higher speeds may be permitted

under certain circumstances.

Mounting
Internal freewheels FD in type standard and
type with P-grinding are without bearing sup-
port. Concentric alignment of inner and outer
ring must be provided by the customer. The per-
missible run out (T.I.R.) must be observed.
The torque is transmitted on the outer ring by
press fit. In order to transmit the torques speci-
fied in the table, the outer ring must be accom-
modated in a housing with an external
diameter K. The housing is made of steel or grey
cast iron in minimum quality GG-20. When
using other housing materials or smaller exter-
nal diameters, we urge you to contact us regar-
ding the transmissible torque.
The tolerance of the housing bore D must be
ISO P6.
Please note the technical points on page 118
regarding the sprag track (shaft).
The permissible operating temperature of the
freewheel is - 40°C to 80°C.

Lubrication
An oil lubrication of the specified quality must
be provided.
Example for ordering
Freewheel size FD 12, standard type:
• FD 12 CFH