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BNS-V

Ball Screw/Spline
(Shaft OD 16 ~ 25 mm)

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The Ball Screw/Spline is a linear-rotary unit that contains Ball Screw grooves and Ball Spline grooves crossing with each other on a single shaft. The nuts of the Ball Screw and the Ball Spline have dedicated support bearings directly embedded on the circumference of the nuts. The Ball Screw/Spline is capable of performing three (rotary, linear and spiral) modes of motion with a single shaft by rotating or stopping the ball screw nut or the spline nut.

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Attributes	Part Number	Online Store Unit Price (USD)	Quantity	Days to Ship	Shaft O.D. (mm)	Lead (mm)	Shaft Length (mm)	Item Total
Shaft O.D. (mm): 16 Lead (mm): 16 Shaft Length (mm): 495	BNS1616V+495LC5HN-0000	–		Days to Ship: 1 - 3 days	Shaft O.D. (mm): 16	Lead (mm): 16	Shaft Length (mm): 495
Shaft O.D. (mm): 20 Lead (mm): 20 Shaft Length (mm): 510	BNS2020V+510LC5HN-0000	–		Days to Ship: 1 - 3 days	Shaft O.D. (mm): 20	Lead (mm): 20	Shaft Length (mm): 510
Shaft O.D. (mm): 25 Lead (mm): 25 Shaft Length (mm): 515	BNS2525V+515LC5HN-0000	–		Days to Ship: 1 - 3 days	Shaft O.D. (mm): 25	Lead (mm): 25	Shaft Length (mm): 515


Model No.	Screw shaft			Main dimensions																						Support bearing		Nut inertial moment	Screw shaft moment	Nut mass	Shaft mass
	Outer diameter d	Inner diameter db	Lead Ph	Outer diameter D	Flange diameter D₁	Overall length L₁	D₃ h7	AE	BE	H	B₄	B₅	B₆	t₁	t₂	d₁	A₁	P₁	P₂	S	Greasing hole diameter		A₂	Basic load rating		Basic load rating
	Outer diameter d	Inner diameter db	Lead Ph	Outer diameter D	Flange diameter D₁	Overall length L₁	D₃ h7	AE	BE	H	B₄	B₅	B₆	t₁	t₂	d₁	A₁	P₁	P₂	S	d₀		A₂	Ca	C₀a	Ca	C₀a
	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm		mm	kN	kN	kN	kN	(kg●cm^2⁾	(kg●cm²/mm)	(kg)	(kg/m)
BNS1616V	16	11	16	42	54	38	32.5	31	31	4	18	9.7	5.8	8.2	6	3.4	30°	48	25.5	M3	2		35°	4.6	6.8	6.7	8.6	0.20	3.21x10^-4	0.21	0.71
BNS2020V	20	14	20	48	64	45	39.5	37	36	6	21	12.2	7.2	10.2	8	4.5	30°	56	31	M4	2		35°	7.3	11.7	7.3	10.6	0.65	8.04x10^-4	0.39	1.11
BNS2525V	25	18	25	56	72	55	43.5	42	41.6	6	21	13.2	15.3	8.2	6	4.5	30°	64	36	M5	3		35°	8.0	14.4	9.7	13.4	1.02	1.91x10^-3	0.51	1.65


Model No.	Main dimensions																									Support bearing		Nut inertial moment	Nut mass
	Outer diameter d₇	Flange diameter D₅	Overall length L₂	D₆ h7	AE₁	BE₁	H₁	B₇	B₈	B₉	t₃	t₄	Greasing hole diameter		S₁	ds₁	A₃	P₃	P₄	Basic load rating		Static permissible moment		Basic torque rating		Basic load rating
	Outer diameter d₇	Flange diameter D₅	Overall length L₂	D₆ h7	AE₁	BE₁	H₁	B₇	B₈	B₉	t₃	t₄	ds₀		S₁	ds₁	A₃	P₃	P₄	C	C₀	M_A		C_T	C_0T	Ca	C₀
	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm		mm	mm	mm	mm	mm	(kN)	(kN)	(N●m)		(N●m)	(N●m)	(kN)	(kN)	(kg●cm^2⁾	(kg)
BNS1616V	42	54	46.4	32.5	27.6	28	4	18	13	11.7	11.5	6	2		M3	3.4	20°	48	25	8.4	13.4	77.4		42.9	68.6	5.2	5.1	0.18	0.19
BNS2020V	48	64	59	36	31.6	32	6	21	15.8	15.7	11.8	6	2		M4	4.5	25°	56	30	10.5	18.6	144		66.4	117.2	6.7	6.4	0.42	0.33
BNS2525V	56	72	67	43.5	39.6	40	6	21	19.2	18.3	15.2	8	3		M5	4.5	25°	64	36	15.9	26.2	230		125.3	207	7.4	7.8	0.98	0.49


Model No.	Outer diameter d	N type hollow spline shaft (standard)			Solid		Maximum length of the shaft
	Outer diameter d	Inner diameter db	Moment of inertia	Mass	Moment of inertia	Mass	Maximum length of the shaft
	mm	mm	(kg●cm²/mm)	(kg/mm	(kg●cm²/mm)	(kg/mm	mm
BNS1616V	16	11	3.2x10^-4	0.71	4.33x10^-4	1.45	500L
BNS2020V	20	14	8.04x10^-4	1.11	1.10x10^-3	2.31	630L
BNS2525V	25	18	1.91x10^-3	1.65	2.71x10^-3	3.64	800L

Model Number Coding

Note 1: See the Specifications tab to see standard sizes available.
Model	Screw shaft outer diameter	Lead(in mm)	Type		Shaft length(in mm)^*1	Screw Accuracy	Spline Accuracy	Shaft Type
BNS	15	15	V	+	495L	C5	H	N

BNS	16	16	V		495L	C5	H: H grade	N: N Type hollow spline shaft (standard)
	20	20			510L
	25	25			515L