Internal Freewheels Fdfd20 Backstop with Sprags

• Model: Fd20
• Type: Cfh
• Outer Diameter: 34mm
• Inner Diameter: 12mm
• Weight: 0.1kg
• Width: 16mm
• Model NO.: FD20
• Material: Gcr15
• OEM: Accept
• Delivery: 10-15days
• Transport Package: Single Box or as Your Requirements
• Specification: P6
• Trademark: SUMA or OEM
• Origin: Changzhou, Jiangsu, China
• HS Code: 84836000
• Production Capacity: 10000PCS/Month

Product Description

                                                                         Internal Freewheels Fdfd20 Backstop with Sprags

Data Sheet

Item	FD
Material	GCr15
Outer Diameter	34-130 mm
Bore Size	12-105 mm
Weight	0.1-0.7 kg
Width	16-35 mm
Precision	P0
Delivery Time	7-10days
Application	Gearbox,reducer,other machines

Internal Freewheels FD
for press fit on the outer ring
with sprags, available in three types
 
Features
Internal Freewheels FD are sprag freewheels 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.
 

Freewheel Size	Type	Nominal t orque MN Nm	Max. speed Inner ring freewheels/ overruns min-1	Outer ring freewheels/ overruns min-1	Type	Nominal t orque MN 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 MN Nm	J mm	B mm	D mm	K mm	Weight kg
FD        12	CFH	11	4 225	4 250	CFR	6	4 225	4 250	7 600	4 200	CFP	5	12	16	34	45	0,1
FD        15	CFH	16	3 875	3 925	CFR	8	3 875	3 925	7 800	4 200	CFP	7	15	20	37	50	0,1
FD        20	CFH	28	3 375	3 450	CFR	14	3 375	3 450	8 320	4 200	CFP	12	20	20	42	55	0,1
FD        25	CFH	48	2 900	3 050	CFR	24	2 900	3 050	10 700	5 600	CFP	21	25	20	47	60	0,1
FD        30	CFH	75	2 525	2 675	CFR	36	2 525	2 675	12 900	7 000	CFP	32	30	20	52	65	0,1
FD        40	CFH	160	1 900	2 150	CFR	71	1 900	2 150	15 000	8 400	CFP	71	40	22	62	80	0,1
FD        50	CFH	260	1 475	1 775	CFR	120	1 475	1 775	18 400	11 300	CFP	120	50	22	72	95	0,2
FD        65	CFH	430	1 200	1 550	CFR	200	1 200	1 550	21 400	14 100	CFP	210	65	25	90	120	0,3
FD        80	CFH	650	950	1 350	CFR	300	950	1 350	23 800	17 800	CFP	320	80	25	110	140	0,6
FD 105	CFH	2 400	800	1 175	CFR	1 100	800	1 175	48 600	45 000	CFP	1 200	105	35	130	165	0,7

 
 
Application example
Two Internal Freewheels FD 40 CFR of standard type with bearing support as overrunning
clutches in the drive of the transport rollers in a packaging distribution unit. In normal oper ation, 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 operation).
 
 
Mounting
Internal freewheels FD in type standard and type with P-grinding 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 torque is transmitted on the outer ring by
press fit. In order to transmit the torques specified in the table, the outer ring must be accommodated 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 external
diameters, we urge you to contact us regarding the transmissible torque.The tolerance of the housing bore D must be ISO P6.
The permissible operating temperature of thefreewheel 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