Internal Freewheels Fnr8 with Rollers and Bearing

• Model: Fnr8
• Type: Roller
• Nominal Torque: 18nm
• Weight: 0.1kg
• Inner Diameter: 8mm
• Outer Diameter: 37mm
• Model NO.: FNR8
• Width: 20mm
• OEM: Accept
• Precision: P6
• Transport Package: Single Box
• Specification: P6
• Trademark: SUMA or OEM
• Origin: Changzhou
• HS Code: 84836000
• Production Capacity: 10000PCS/Year

Product Description

Internal Freewheels FNR
for keyway connection on the outer ring
with rollers and bearing
 
Features
Internal Freewheels FNR are roller freewheels with bearing support. The freewheels of sizes 8
to 20 have a sleeve bearing. The sizes 25 to 60 have ball bearings, these enable higher speeds in freewheeling operation. The freewheel is built into the customer housing. This makes compact, space-saving fitting solutions possible. The freewheels FNR are used as:
 Backstops
 Overrunning Clutches
 Indexing Freewheels
Nominal torques up to 3 000 Nm. The faces of both sides of the outer ring are provided with
grooves for torque transmission. Bores up to 60 mm.
 

Freewheel Size	Nominal torque	Max. speed		Bore d	B	D	E	F	N	P	Weight
	MN	Inner ring freewheels/	Outer ring freewheels/	mm	mm	mm	mm	mm	mm	mm	kg
	Nm	overruns min-1	overruns min-1
FNR 8	18	1 200	1 200	8	20	37	19	30	6	3,0	0,1
FNR 12	18	1 200	1 200	12	20	37	19	30	6	3,0	0,1
FNR 15	50	950	950	15	30	47	23	37	7	3,5	0,3
FNR 20	112	650	650	20	36	62	35	50	8	3,5	0,6
FNR 25	220	1 550	3 350	25	40	80	40	68	9	4,0	1,3
FNR 30	410	1 400	3 050	30	48	90	45	75	12	5,0	1,9
FNR 35	500	1 300	2 850	35	53	100	50	80	13	6,0	2,6
FNR 40	750	1 150	2 500	40	63	110	55	90	15	7,0	3,6
FNR 45	1 020	1 100	2 400	45	63	120	60	95	16	7,0	4,2
FNR 50	1 900	950	2 050	50	80	130	70	110	17	8,5	6,0
FNR 55	2 000	900	1 900	55	80	140	75	115	18	9,0	6,8
FNR 60	3 000	800	1 800	60	95	150	80	125	18	9,0	9,5

 
 
Application example
Internal Freewheel FNR 40 as an indexing freewheel for an incremental drive in the feed -
ing device of a wire processing machine. The indexing lever is driven by a crank operation.
The back and forth movement is transferred by the indexing freewheel in a gradual rotating
movement of the wire feeding device.
 
Mounting
The tolerance of the housing bore D must be ISO H7 or G7 and the tolerance of the shaft must
be ISO h6 or j6. The outer ring has to be completely enclosed in a stable housing to transmit the listed torques.
 
Lubrication
An oil lubrication of the specified quality must be provided.