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Ball screw

The ball screw is a high-efficiency feed screw with the ball making a rolling motion between the screw axis and the nut. Compared with a conventional sliding screw, this product has drive torque of one-third or less, making it most suitable for saving drive motor power.

Basic dimensions				Basic load rating		Mass		Model
Shaft outer diameter	Lead	Ball center to center diameter	Thread minor diameter	dynamic	static	Nut	Shaft	Bearing No.
d [mm]	Ph [mm]	dp [mm]	dc [mm]	C [kN]	C0 [kN]	[kg]	[kg/m]
20	6	20.75	17.2	5.4	10.5	0.74	2.13	BIF 2006-3
20	6	20.75	17.2	8.3	17.5	0.8	2.13	BIF 2006-5
20	6	21	16.4	11.4	21.5	0.48	1.93	DIK 2006-6
20	6	20.75	17.2	8.3	17.5	1.05	2.13	BNFN 2006-2.5
20	6	20.75	17.2	9.7	21	1.3	2.13	BNFN 2006-3
20	6	20.75	17.2	11.1	24.5	1.17	2.13	BNFN 2006-3.5
20	6	20.75	17.2	15.1	35	1.42	2.13	BNFN 2006-5
20	8	21	16.4	8.1	14.4	0.45	2.06	DIK 2008-4
20	8	21	16.4	15.1	35	1.08	2.06	BNFN 2008-2.5
20	10	21	16.4	7.2	13.2	1.06	2.14	BNFN 2010A-1.5
20	12	21	16.4	7.1	12.5	1.3	2.19	BNFN 2012-1.5
20	20	20.75	17.5	11.1	24.7	0.54	2.25	BLW 2020-3.6
25	4	25.5	22.8	5.7	15	0.43	3.5	DIK 2504-6
25	4	25.5	22.8	7.4	19.9	0.47	3.5	DIK 2504-8
25	4	25.5	22.8	5.2	13.7	0.69	3.5	BNFN 2504-2.5
25	4	25.5	22.8	9.5	27.3	0.88	3.5	BNFN 2504-5
25	5	25.75	22.2	9.7	22.6	0.47	3.35	DIK 2505-6
25	5	25.75	22.2	6	13.1	0.7	3.35	BIF 2505-3
25	5	25.75	22.2	9.2	22	0.75	3.35	BIF 2505-5
25	5	25.75	22.2	9.2	22	0.92	3.35	BNFN 2505-2.5
25	5	25.75	22.2	10.8	26.4	1.19	3.35	BNFN 2505-3
25	5	25.75	22.2	12.3	30.7	1.02	3.35	BNFN 2505-3.5
25	5	25.75	22.2	16.7	44	1.22	3.35	BNFN 2505-5
25	6	26	21.4	9.1	18	0.46	3.19	DIK 2506-4
25	6	26	21.4	12.8	27	0.54	3.19	DIK 2506-6
25	6	26	21.4	12.5	27.3	1.19	3.19	BNFN 2506-2.5
25	6	26	21.4	14.6	32.8	1.47	3.19	BNFN 2506-3
25	6	26	21.4	15.1	35.9	1.33	3.19	BNFN 2506-3.5
25	6	26	21.4	22.5	54.8	1.61	3.19	BNFN 2506-5
25	8	26	21.4	9.2	18.8	0.54	3.35	DIK 2508-4