Bd25 Complete Freewheels with Ball Bearings

• Customization: Available
• Separated: Unseparated
• Load Direction: Radial Bearing
• Model NO.: BD25
• Material: Bearing Steel
• Model: Bd 25
• Type: Dx
• Precisiom: P6
• Outside Diameter: 126mm
• Inside Diameter: 35-40mm
• Weight: 6.6kgkg
• Width: 93mm
• OEM: Accept
• Package: Single Box or as Your Rrquirements
• Port: Shanghai;Ningbo
• Transport Package: Single Box or as Your Requirements
• Specification: P6
• Trademark: SUMA or OEM
• Origin: Changzhou, Jiangsu, China
• HS Code: 84826000
• Production Capacity: 10000PCS/Month

Product Description

 
Product Description

Features
Complete Freewheels BD X are sealed sprag freewheels with ball bearings and sprag lift-off
X. They are supplied oil-filled. The sprag lift-off X ensures wear-free freewheel - ing operation when the inner ring rotates at high speed. The freewheels BD X are used as:
Backstops
Overrunning Clutches
for applications with high speed freewheeling operation and when used as an overrunning
clutch with low speed driving operation. Nominal torques up to 42 500 Nm. Bores up to 150 mm.
 
Application example
Complete Freewheel BD 45 SX as an overrunning clutch on the shaft end of the high speed
rotating main drive of a textile machine. The sprocket is linked to an auxiliary drive. In normal
operation (freewheeling operation) the inner ring overruns and the outer ring is at a standstill
with the bolted on sprocket. During set-up, the machine is driven by the slowly running auxiliary drive via the chain drive and the freewheel that is working in the driving operation. With the high speed of the inner ring in freewheeling operation, the type sprag lift-off X is used; the sprags work in freewheeling operation without contact and hence are wear-free.
 

Freewheel Size	Type	Nominal torque MN Nm	Spraglift-off at inner ring speed  min-1	Max speed		Bore d				B	D	F	G**	H	K	L	R	S	T	Z**	Weight       kg
				Inner ring freewheels /overruns min-1	Outer ring drives min-1
						Standard			Max
						min-1	min-1	min-1	min-1	min-1	min-1	min-1		min-1	min-1	min-1	min-1	min-1	min-1
BD 20	DX	420	750	1 700	300	30			30	65,5	106	0,75	M 6	26	5	77	70	0,5	90	6	3,8
BD 25	DX	700	700	1 600	280	35	40		40	81,5	126	0,75	M 6	30	5	93	80	0,5	105	6	6,6
BD 30	DX	1 250	630	1 600	252	45	50		50	88,5	151	0,75	M 8	36	6	102	100	1,5	130	6	10,3
BD 40	SX	1 900	430	1 500	172	45	55	60	60	102,5	181	0,75	M 10	37	6	116	120	3,5	160	6	17,4
BD 45	SX	2 300	400	1 500	160	55	65	70	70	115,5	196	1,25	M 12	38	6	130	130	5,0	170	8	22,4
BD 52	SX	5 600	320	1 500	128	65	75	80	80	130,5	216	1,75	M 14	44	8	150	150	4,5	190	8	31,1
BD 55	SX	7 700	320	1 250	128	75	85	90	90	146,5	246	1,75	M 14	48	10	170	160	2,5	215	8	45,6
BD 60	SX	14 500	250	1 100	100	85	95	100	105	182,5	291	1,75	M 14	55	10	206	190	2,5	250	8	78,2
BD 70	SX	21 000	240	1 000	96	120			120	192,5	321	1,25	M 16	58	10	215	210	5,0	280	8	93,4
BD 100	UX	42 500	210	750	84	150			150	248,5	411	3,75	M 20	79	10	276	270	6,5	365	10	198,4

 
Mounting
The customer attachment part is centered on the diameter R and bolted on to the face. The
pilot on the covers is particularly suitable for attaching smaller and narrower parts (sprockets,
gear wheels etc.). The customer must provide fastening screws of the necessary length in order to mount the attachment part. The tolerance of the shaft must be ISO h6 or j6 and the tolerance of the pilot diameter R of the attachment part must be ISO H7 or J7.
 
Example for ordering
Freewheel size BD 30, type with sprag lift-off X and 45 mm bore:
? BD 30 DX, d = 45 mm