HIWIN - linear equipment

Heavy load supports.

The flanged bearing units WBK consist of a solid steel housing. Because of the used angular contact ball bearings with a 60° contact angle the bearing units can absorb heavy axial loads.

High rigidity and a minimum axial clearance is the result of the preload of the bearings by the housing and the cover plate. All bearing units are shipped with sealing, washers and lock nut.

The bearing units of series WBK are available in different sizes and can be delivered with different numbers of bearings according to the your requirements.

Advantages:

• High accuracy
• High stiffness
• Heavy load applications due to 60° contact angle
• Suitable for heavy load applications, such as ballscrew supports for machine tools

Main dimension

Part number	d	D	D1	D2	L	L1	L2	A	W	X	Y	Z	d1	I	V	P	Q	3D (STP)
WBK 15 DF	15	70	106	72	60	32	15	80	88	9	14.0	8.5	45	3	58	M5	10
WBK 17 DF	17	70	106	72	60	32	15	80	88	9	14.0	8.5	45	3	58	M5	10
WBK 20 DF	20	70	106	72	60	32	15	80	88	9	14.0	8.5	45	3	58	M5	10
WBK 25 DF	25	85	130	90	66	33	18	100	110	11	17.5	11.0	57	4	70	M6	12
WBK 25 DFD	25	85	130	90	81	48	18	100	110	11	17.5	11.0	57	4	70	M6	12
WBK 25 DFF	25	85	130	90	96	48	18	100	110	11	17.5	11.0	57	4	70	M6	12
WBK 30 DF	30	85	130	90	66	33	18	100	110	11	17.5	11.0	57	4	70	M6	12
WBK 30 DFD	30	85	130	90	81	48	18	100	110	11	17.5	11.0	57	4	70	M6	12
WBK 30 DFF	30	85	130	90	96	48	18	100	110	11	17.5	11.0	57	4	70	M6	12
WBK 35 DF	35	95	142	102	66	33	18	106	121	11	17.5	11.0	69	4	80	M6	12
WBK 35 DFD	35	95	142	102	81	48	18	106	121	11	17.5	11.0	69	4	80	M6	12
WBK 35 DFF	35	95	142	102	96	48	18	106	121	11	17.5	11.0	69	4	80	M6	12
WBK 40 DF	40	95	142	102	66	33	18	106	121	11	17.5	11.0	69	4	80	M6	12
WBK 40 DFD	40	95	142	102	81	48	18	106	121	11	17.5	11.0	69	4	80	M6	12
WBK 40 DFF	40	95	142	102	96	48	18	106	121	11	17.5	11.0	69	4	80	M6	12

Technical specification

Part number	Dynamic load [kN]	Max. axial load [kN]	Preload [kN]	Axial rigidity [N/µm]	Max. starting torque [Nm]	Weight [kg]
WBK 15 DF	21,9	26,6	2,15	750	0,19	1,9
WBK 17 DF	21,9	26,6	2,15	750	0,19	1,9
WBK 20 DF	21,9	26,6	2,15	750	0,19	1,9
WBK 25 DF	28,5	40,5	3,15	1000	0,29	3,1
WBK 25 DFD	46,5	81,5	4,30	1470	0,39	3,4
WBK 25 DFF	46.5	81.5	6.40	2000	0.45	4.5
WBK 30 DF	29,2	43,0	3,35	1030	0,30	3,0
WBK 30 DFD	47,5	86,0	4,50	1520	0,40	3,3
WBK 30 DFF	47.5	86.0	8.80	2050	0.52	4.3
WBK 35 DF	31,0	50,0	3,80	1180	0,34	3,4
WBK 35 DFD	50,5	100,0	5,20	1710	0,45	4,3
WBK 35 DFF	50,5	100,0	7,65	2350	0,59	5,0
WBK 40 DF	31,5	52,0	3,90	1230	0,36	3,6
WBK 40 DFD	51,5	104,0	5,30	1810	0,47	4,2
WBK 40 DFF	51,5	104,0	7,85	2400	0,61	4,7