Fxm 76 -25 Integrated Freewheels for Bolting to The Face with Sprag Lift-off

• Model: Fxm 76 -25
• Type: Sprag
• Inner Diameter: 45-60mm
• Outer Diameter: 140mm
• Weight: 3.1kg
• Material: Gcr15
• Model NO.: FXM 76 -25
• Precision: P6
• 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

Fxm 76 -25 Integrated Freewheels for Bolting to The Face with Sprag Lift-off

Integrated Freewheels FXM
for bolting to the face
with sprag lift-off X
 
Features
Integrated Freewheels FXM are sprag freewheels without bearing support and with sprag
lift-off X. The sprag lift-off X ensures a wear free freewheeling operation when the inner ring rotates at high speed. The freewheels FXM are used as:
 Backstops
 Overunning Clutches
for applications with high speed freewheel ing operation and when used as an overrunning
clutch with low speed driving operation. Nominal torques up to 888 000 Nm. Bores up to 460 mm. Many standard bores are available.
 
Sprag lift-off X
Integrated Freewheels FXM are equipped with sprag lift-off X. The sprag lift-off X is used for
backstops and overrunning clutches, provided that in freewheeling operation the inner ring is
rotating at high speed and providing with overrunning clutches that the driving operation
is conducted at low speed. In freewheeling operation, the centrifugal force FC causes the
sprag to lift off from the outer track. In this operating state, the freewheel works wear-free,
i.e. with unlimited service life.
 
Figure 64-2 shows a freewheel with sprag liftoff X in freewheeling operation. The sprags,
which are supported in a cage connected with the inner ring, rotate with the inner ring. The
centrifugal force FC that is applied in the center of gravity S of the sprag turns the sprag counterclockwise and rests against the support ring of the cage. This results in the gap a between the sprag and the outer track; the freewheel works with out contact. If the inner ring speed decreases to such an extent that the effect of the centrifugal force on the sprag is less than that of the spring force FF , the sprag again rests on the outer ring and the freewheel is ready to lock (figure 64-3). If used as an overrunning clutch, the driving speed must not exceed 40% of the lift-off speed.

Type	d							A	B	D	E	F	G	J	L	P	T	U	V	W	Z**
							mm
	mm	mm	mm	mm	mm	mm		mm	mm	mm	mm	mm		mm	mm	mm	mm	mm	mm	mm		kg
FXM  31 -17	20*						20*	17	25	85	41	55	M6	31	24	1,0	70	15	6	21	6	0,8
FXM  38 -17	25*						25*	17	25	90	48	62	M6	38	24	1,0	75	15	6	21	6	0,9
FXM  46 -25	25						30	25	35	95	56	70	M6	46	35	1,0	82	15	6	21	6	1,3
FXM  51 -25	25	30	35				36	25	35	105	62	75	M6	51	35	1,0	90	15	6	21	6	1,7
FXM  56 -25	35						40	25	35	110	66	80	M6	56	35	1,0	96	15	6	21	8	1,8
FXM  61 -19	30	35	40				45*	19	27	120	74	85	M8	61	25	1,0	105	15	6	21	6	1,8
FXM  66 -25	35	40	45				48*	25	35	132	82	90	M8	66	35	1,0	115	15	8	23	8	2,8
FXM  76 -25	45	55					60*	25	35	140	92	100	M8	76	35	1,0	125	15	8	23	8	3,1
FXM  86 -25	40	45	50	60	65		70*	25	40	150	102	110	M8	86	40	1,0	132	15	8	23	8	4,2
FXM  101 -25	55	70					80*	25	50	175	117	125	M10	101	50	1,0	155	20	8	28	8	6,9
FXM  85 -40	45	50	60	65			65	40	50	175	102	125	M10	85	60	1,0	155	20	8	28	8	7,4
FXM  100 -40	45	50	55	60	70	75	80*	40	50	190	130	140	M10	100	60	1,5	165	25	10	35	12	8,8
FXM  120 -50	60	65	70	75	80	95	95	50	60	210	150	160	M10	120	70	1,5	185	25	10	35	12	12,7
FXM  140 -50	65	90	100	110			110	50	70	245	170	180	M12	140	70	2,0	218	25	12	35	12	19,8
FXM  170 -63	70	85	90	100	120		130	63	80	290	200	210	M16	170	80	2,0	258	28	12	38	12	33,0
FXM  200 -63	130						155	63	80	310	230	240	M16	200	80	2,0	278	32	12	42	12	32,0
FXM 240 - 63							185	63	80	400	280	310	M20	240	90	2,0	360	48	15	60	12	60,0
FXM 240 - 96							185	96	125	420	280	310	M24	240	120	2,0	370	48	18	60	16	95,0
FXM 260 - 63							205	63	80	430	300	330	M20	260	105	2,0	380	48	18	60	16	75,0
FXM 290 - 70							230	70	80	460	330	360	M20	290	105	2,0	410	48	18	60	16	90,0
FXM 290 - 96							230	96	110	460	330	360	M20	290	120	2,0	410	48	18	60	16	91,0
FXM 310 - 70							240	70	125	497	360	380	M20	310	110	3,0	450	48	18	60	24	135,0
FXM 310 - 96							240	96	125	497	360	380	M20	310	120	3,0	450	48	18	60	24	145,0
FXM 320 - 70							250	70	80	490	360	390	M24	320	105	3,0	440	55	20	68	16	105,0
FXM 360 - 100							280	100	120	540	400	430	M24	360	125	3,0	500	55	20	68	24	170,0
FXM 410 - 100							320	100	120	630	460	480	M24	410	125	3,0	560	55	20	68	24	245,0
FXM 2410 - 100							320	200	220	630	460	480	M30	410	220	3,0	560	55	20	68	24	440,0

Application example
Integrated Freewheel FXM 170 - 63 MX with end cover as backstop fitted to the end of the first
intermediate shaft of a spur gearbox in the drive of an inclined conveyor belt. In the case of a
motor stop, the conveyor belt must be held securely so that the conveyor goods do not pull
the belt backwards and possibly cause serious damage. Due to the high shaft speeds in normal operation (freewheeling operation), the sprag lift-off X ensures a contactless and hence wear free continuous operation.
 
Two Integrated Freewheels FXM 120 - 50 MX in the gearbox unit of a vertical bucket conveyor. Alongside the main drive, the bucket conveyor has a creep drive, which can be moved at a low
speed if maintenance work needs to be carried out. The freewheel arranged between the creep drive and the main drive works as an overrunning clutch. When the creep drive operates, the freewheel is in driving oper ation. In normal oper ation, when driving via the main drive, the
inner ring of the freewheel overruns at high speed and automatically disengages the creep
drive. The second freewheel that is arranged on the end of the first intermediate shaft of the
main gearbox, works as a backstop and prevents the bucket conveyor from running back
when the unit is at a standstill.
 
 
Integrated Freewheel FXM 76-25 NX as an overrunning clutch between the creep drive and the main drive of a cement mixer. When the creep drive operates, the outer ring is driven by the shaft coupling. The freewheel works in driving operation and drives the unit at a low speed via the main gearbox. In normal operation (free - wheel ing operation), the inner ring overruns at high speed and the creep drive is automatically disengaged. With the high shaft speed, the type sprag lift-off X is used; the sprags work in freewheeling operation without contact and
hence are wear-free. The arrangement of the seals between the freewheel and the main
gearbox is advantageous. In freewheeling operation, this is at a standstill and hence generates
no addi tion al friction-related temperature rise.
Product Pictures 

Company Information 

 Changzhou Suma Precision Machinery Co., Ltd(Changzhou Tianniu Clutch Factory)is a manufacturer specialized in Producing Various cam clutch, one way bearing, one way clutch, backstop clutch, overrunning clutch and other bearings with high technology.


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