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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]
25	8	26	21.4	13.1	28.1	0.68	3.35	DIK 2508-6
25	8	26.25	20.5	15.8	32.8	1.52	3.13	BIF 2508-5
25	8	26.25	20.5	15.8	32.8	1.89	3.13	BNFN 2508-2.5
25	8	26.25	20.5	18.5	39.4	2.32	3.13	BNFN 2508-3
25	8	26.25	20.5	21.2	46	2.12	3.13	BNFN 2508-3.5
25	8	26.25	20.5	28.7	65.8	2.6	3.13	BNFN 2508-5
25	10	26	21.6	9	18	0.65	3.45	DIK 2510-4
25	10	26.3	21.4	15.8	33	1.86	3.27	BIF 2510A-5
25	10	26.3	21.4	15.8	33	2.16	3.27	BNFN 2510A-2.5
25	12	26	21.9	12.3	27.6	1.44	3.52	BNFN 2512-2.5
25	16	26	21.4	7.9	16.7	1.44	3.6	BNFN 2516-1.5
25	25	26	22	16.6	38.7	0.94	3.52	BLW 2525-3.6
28	5	28.75	25.2	9.7	24.6	0.98	4.27	BIF 2805-5
28	5	28.75	25.2	17.4	49.4	1.34	4.27	BIF 2805-10
28	5	28.75	25.2	10.5	26.4	0.61	4.27	DIK 2805-6
28	5	28.75	25.2	13.4	35.2	0.68	4.27	DIK 2805-8
28	5	28.75	25.2	9.7	24.6	1.16	4.27	BNFN 2805-2.5
28	5	28.75	25.2	11.3	29.5	1.4	4.27	BNFN 2805-3
28	5	28.75	25.2	12.9	34.4	1.28	4.27	BNFN 2805-3.5
28	5	28.75	25.2	17.5	49.4	1.52	4.27	BNFN 2805-5
28	5	28.75	25.2	24.8	73.8	1.88	4.27	BNFN 2805-7.5
28	6	28.75	25.2	9.6	24.6	1.09	4.36	BIF 2806-5
28	6	28.75	25.2	17.5	49.4	1.52	4.36	BIF 2806-10
28	6	29	24.4	14	32	0.64	4.36	DIK 2806-6
28	6	28.75	25.2	9.6	24.6	1.3	4.36	BNFN 2806-2.5
28	6	28.75	25.2	12.9	34.5	1.45	4.36	BNFN 2806-3.5
28	6	28.75	25.2	17.5	49.4	1.73	4.36	BNFN 2806-5
28	6	28.75	25.2	24.8	73.8	2.16	4.36	BNFN 2806-7.5
28	8	29.25	23.6	16.8	36.8	2.47	4.02	BNFN 2808-2.5
28	8	29.25	23.6	19.6	44.2	2.9	4.02	BNFN 2808-3