Fde12 Internal Freewheels for Press Fit on The Outer Ring

• Model: Fde12
• Type: Cfh
• Outer Diameter: 34mm
• Inner Diameter: 8mm
• Weight: 0.1kg
• Precision: P6
• Model NO.: FDE12
• Material: Gcr15
• OEM: Accept
• Port: Shanghai;Ningbo
• 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 FDE
for press fit on the outer ring
with sprags, available in three types
 
Features
Internal Freewheels FDE are sprag freewheels with anti-friction bearing dimensions.
The freewheels FDE are used as:
 Backstops
 Overrunning Clutches
 Indexing Freewheels
The standard type and the 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 inner and outer ring by press fit. Bores up to 95 mm.
 

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	Bore d mm	B mm	D mm	K mm	L mm	Weight kg
FDE     12	CFH	11	4 225	4 250	CFR	6	4 225	4 250	7 600	4 200	CFP	5	8	16	34	45	12,5	0,1
FDE     15	CFH	16	3 875	3 925	CFR	8	3 875	3 925	7 800	4 200	CFP	7	10	20	37	50	16	0,1
FDE     20	CFH	28	3 375	3 450	CFR	14	3 375	3 450	8 300	4 200	CFP	12	15	20	42	55	16	0,1
FDE     25	CFH	48	2 900	3 050	CFR	24	2 900	3 050	10 700	5 600	CFP	21	20	20	47	60	20	0,1
FDE     30	CFH	75	2 525	2 675	CFR	36	2 525	2 675	12 900	7 000	CFP	32	25	20	52	65	20	0,1
FDE     40	CFH	160	1 900	2 150	CFR	71	1 900	2 150	15 000	8 400	CFP	71	35	22	62	80	22	0,2
FDE     50	CFH	260	1 475	1 775	CFR	120	1 475	1 775	18 400	11 300	CFP	120	45	22	72	95	20	0,3
FDE     65	CFH	430	1 200	1 550	CFR	200	1 200	1 550	21 400	14 100	CFP	210	55	25	90	120	28	0,6
FDE     80	CFH	650	950	1 350	CFR	300	950	1 350	23 800	17 800	CFP	320	70	25	110	140	25	0,8
FDE 105	CFH	2 400	800	1 175	CFR	1 100	800	1 175	48 600	45 000	CFP	1 200	95	35	130	165	36	1,1

 
Application example
Two Internal Freewheels FDE 65 CFP, type with P-grinding, as indexing freewheels in the spring drive of a high-voltage switch. The contacts of high-voltage switches must be separated from each other within a few milliseconds upon shut down. The abrupt opening is achieved by a pretensioned spring. When this is triggered the contacts are pulled apart from each other. After the switch is switched back on, the release spring is retensioned. This is executed by a
camshaft that drives two indexing freewheels. This turns the shaft of the release spring at a
specified angle in small steps. The solution with indexing freewheels replaces a more expensive reduction gear. The P-grinding type ensures an increased service life and considerable indexing precision.
 
Mounting
Internal freewheels FDE in standard type 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 inner and
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 and the tolerance of the shaft must be
ISO p6. 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 FDE 50, standard type with bearing support:
？ FDE 50 CFR