Ball Splines / One End Stepped and Threaded (Part Numbers - CAD Download)

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Ball Splines/One End Stepped and Threaded:Related Image

One End Stepped and Threaded	Spline Shafts [ M ] EN 1.3505 Equiv. Nut [ M ] EN 1.7242 Equiv. [ H ] Hardness: 58HRC ~	Spline Shaft, Nut [ M ] Material: EN 1.4125 Equiv. [ H ] Hardness: 55HRC ~
One End Stepped and Threaded	Nut 1 pc.	Nut 1 pc.
With Round Flange Nut	BSKM	BSKMS
With Compact Flange Nut	BSKN	-
With Straight Nut	BSKS	BSKSS

Specifications

Part Number	-	L	-	F	-	B	-	P	-	M
BSKS8 BSKS8G BSKS8L	- - -	250 250 250	- - -	F20 F20 F20	- - -	B15 B15 B15	- - -	P6 P6 P6	- - -	M6 M6 M6

Alternative grease types available.
For Days to Ship, Price and Performance, see >> P.340

■ Spline Shafts

Part Number		1mm Increment			P Selection												M (Coarse) Selection (M≤P)										D	(Y)	Mass (kg/m)
Type	No.	L	F	B																								1-Nut Type
Type	No.	1-Nut Type	F	B																								min~max
BSKM BSKN BSKS BSKMS BSKSS	*6	60~400(190)	When P=3 4≤F≤9 When P=4 4≤F≤16 When P≥5 4≤F≤Px5 [ ! ] F≥B+2	When M=3 2≤B≤9 When M=4 2≤B≤16 When M≥5 2≤B≤Mx5 [ ! ] B≥Pitchx3+ ℓ [ ! ] For Stainless Steel materials,M≤B≤Mx3	3	4	5										3	4	5								6	56~396(186)	0.23
	*8	60~400(190)				4	5	6										4	5	6							8	56~396(186)	0.39
	*10	60~600(390)				4	5	6	8									4	5	6	8						10.4	56~596(386)	0.65
	*13	60~600(390)					5	6	8	10									5	6	8	10					13.4	56~596(386)	1.11
	*16	70~600(390)					5	6	8	10	12	13								6	8	10	12				16.6	66~596(386)	1.65
	20	80~700							8	10	12	13	15	16	20					6	8	10	12	16			20.6	76~696	2.57
	25	90~900							8	10	12	13	15	16	20					6	8	10	12	16	20		25.8	86~896	4.04
	30	100~1150								10	12	13	15	16	20	25					8	10	12	16	20	24	30.8	96~1146	5.85

[ ! ] For BSKMS and BSKSS, only * marked sizes are available, and the Max. L and Y dimensions are in ( ).
[ ! ] For BSKN, only No. 6, 8 and 10 are available.
■ Round Flange Nuts, Compact Flange Nuts

No.	D (h6)	L	Df	H	P.C.D.	d₁	d₂	h	W	d	B	Basic Rated Torque		Basic Load Rating		Allowable Static Moment		Mass (kg)
No.	D (h6)	L	Df	H	P.C.D.	d₁	d₂	h	W	d	B	Dynamic C_t (N • m)	Static C_0t (N • m)	Dynamic C (kN)	Static C₀ (kN)	M₀₁ (N • m)	M₀₂ (N • m)	Mass (kg)
6	14	25	30	6	22	3.5	6	3.1	6.5	1.5	18	3.8	7	1.2	2.1	5	36	0.03
8	16	25	32	6	24	3.5	6	3.1	6.5		21	4.8	8.7	1.2	2.1	5	36	0.04
10	21	40(33)	42(41)	6(8)	32(30)	4.5	8	4.4(5.3)	14(8.5)		25	19(11)	34(21)	3.8(2.4)	6.9(4.3)	26(15)	181(102)	0.09
13	24	44(36)	44(45)	7(8)	33(34)			4.4(5.3)	15(10)		-	28(20)	52(37)	4.6(3.3)	8.3(5.9)	36(22)	251(148)	0.11
16	31	50	51	7	40			4.4	18			51	93	6.2	11.1	56	386	0.2
20	35	63	58	9	45	5.5	9.5	5.4	22.5	2		85	154	8.5	15.3	83	611	0.3
25	42	71	65	9	52	5.5	9.5	5.4	26.5	2		193	348	15.4	27.7	173	1248	0.4
30	47	80	75	10	60	6.6	11	6.5	30	2.5		272	490	18.5	33.3	212	1581	0.57

Dimensions in ( ) are for EN 1.4125 Equiv. Allowable static moment M₀₁ is a value measured when a single nut is used, and M₀₂ is a value measured when two nuts are used.
■ Straight Nuts

No.	D (h6)	L	b		t (+0.05 0)	d	α	Basic Rated Torque		Basic Load Rating		Allowable Static Moment		Mass (kg)	Dimensions of Key (Included)
				Tolerance				Dynamic C_t (N • m)	Static C_0t (N • m)	Dynamic C (kN)	Static C₀ (kN)	M₀₁ (N • m)	M₀₂ (N • m)		B		h		L₁	R
																Tolerance		Tolerance
6	14	25	2.5	+0.014 0	1.2	1.5	15°	3.8	7	1.2	2.1	5	36	0.012	2.5	+0.016 +0.006	2.5	0 -0.025	10.5	1.25
8	16						25°	4.8	8.7	1.2	2.1	5	36	0.013					10.5
10	21	40(33)	3		1.5		-	19(11)	34(21)	3.8(2.4)	6.9(4.3)	26(15)	181(102)	0.06	3		3		17(14)	1.5
13	24	44(36)						28(20)	52(37)	4.6(3.3)	8.3(5.9)	36(22)	251(148)	0.07					17(14)
16	31	50	3.5	+0.018 0	2			51	93	6.2	11.1	56	386	0.15	3.5	+0.024 +0.012	3.5	0 -0.030	18	1.75
20	35	63	4		2.5	2		85	154	8.5	15.3	83	611	0.2	4		4		29	2
25	42	71						193	348	15.4	27.7	173	1248	0.29					33
30	47	80				2.5		272	490	18.5	33.3	212	1581	0.37					42

Dimensions in ( ) are for EN 1.4125 Equiv. Allowable static moment M₀₁ is a value measured when a single nut is used, and M₀₂ is a value measured when two nuts are used.
Ball Splines/One End Stepped and Threaded:Related Image

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Part Number
BSKS16G-[70-600/1]-F[7-65/1]-B[5-60/1]-P[5,6,8,10,12,13]-M[6,8,10,12]
BSKS16L-[70-600/1]-F[7-65/1]-B[5-60/1]-P[5,6,8,10,12,13]-M[6,8,10,12]
BSKS20-[80-700/1]-F[9-80/1]-B[7-90/1]-P[8,10,12,13,15,16]-M[6,8,10,12,16]
BSKS20G-[80-700/1]-F[9-80/1]-B[7-90/1]-P[8,10,12,13,15,16]-M[6,8,10,12,16]
BSKS20L-[80-700/1]-F[9-80/1]-B[7-90/1]-P[8,10,12,13,15,16]-M[6,8,10,12,16]
BSKS25-[90-1300/1]-F[9-100/1]-B[5-100/1]-P[8,10,12,13,15,16,20]-M[6,8,10,12,16,20]
BSKS25G-[90-900/1]-F[9-100/1]-B[7-100/1]-P[8,10,12,13,15,16,20]-M[6,8,10,12,16,20]
BSKS25L-[90-900/1]-F[9-100/1]-B[7-100/1]-P[8,10,12,13,15,16,20]-M[6,8,10,12,16,20]
BSKS30-[100-1150/1]-F[12-120/1]-B[10-120/1]-P[10,12,13,15,16,20,25]-M[8,10,12,16,20,24]
BSKS30G-[100-1150/1]-F[12-120/1]-B[10-120/1]-P[10,12,13,15,16,20,25]-M[8,10,12,16,20,24]
BSKS30L-[100-1150/1]-F[12-120/1]-B[10-120/1]-P[10,12,13,15,16,20,25]-M[8,10,12,16,20,24]
BSKSS6-[60-190/1]-F[6-25/1]-B[3-15/1]-P[3,4,5]-M[3,4,5]
BSKSS6G-[60-190/1]-F[6-25/1]-B[3-15/1]-P[3,4,5]-M[3,4,5]
BSKSS6L-[60-190/1]-F[6-25/1]-B[3-15/1]-P[3,4,5]-M[3,4,5]
BSKSS8-[60-190/1]-F[7-30/1]-B[4-18/1]-P[4,5,6]-M[4,5,6]
BSKSS8G-[60-190/1]-F[7-30/1]-B[4-18/1]-P[4,5,6]-M[4,5,6]
BSKSS8L-[60-190/1]-F[7-30/1]-B[4-18/1]-P[4,5,6]-M[4,5,6]
BSKSS10-[60-390/1]-F[7-40/1]-B[4-24/1]-P[4,5,6,8]-M[4,5,6,8]
BSKSS10G-[60-390/1]-F[7-40/1]-B[4-24/1]-P[4,5,6,8]-M[4,5,6,8]
BSKSS10L-[60-390/1]-F[7-40/1]-B[4-24/1]-P[4,5,6,8]-M[4,5,6,8]
BSKSS13-[60-390/1]-F[7-50/1]-B[5-30/1]-P[5,6,8,10]-M[5,6,8,10]
BSKSS13G-[60-390/1]-F[7-50/1]-B[5-30/1]-P[5,6,8,10]-M[5,6,8,10]
BSKSS13L-[60-390/1]-F[7-50/1]-B[5-30/1]-P[5,6,8,10]-M[5,6,8,10]
BSKSS16-[70-390/1]-F[7-65/1]-B[5-39/1]-P[5,6,8,10,12,13]-M[6,8,10,12]
BSKSS16G-[70-390/1]-F[7-65/1]-B[5-39/1]-P[5,6,8,10,12,13]-M[6,8,10,12]
BSKSS16L-[70-390/1]-F[7-65/1]-B[5-39/1]-P[5,6,8,10,12,13]-M[6,8,10,12]

Standard Unit Price	Minimum order quantity	Standard Shipping Days ?	RoHS	Nut type	Shaft O.D. D (φ)	Shaft material	Nut Overall Length (mm)	Nut O.D. (φ)	Shaft Overall Length L (mm)	Basic Load Rating Dynamic Rating (N)	Allowable Torque (Nm)	Nut Material	Grease	B (mm)	F (mm)	M (mm)	P (mm)
-	1	12 Days	10	Straight	16.6	EN 1.3505 Equiv.	50	31	70 ～ 600	6200	51	EN 1.7242 Equiv.	LG2	5 ～ 60	7 ～ 65	6 ～ 12	5 ～ 13
-	1	12 Days	10	Straight	16.6	EN 1.3505 Equiv.	50	31	70 ～ 600	6200	51	EN 1.7242 Equiv.	ET-100K	5 ～ 60	7 ～ 65	6 ～ 12	5 ～ 13
-	1	10 Days	10	Straight	20.6	EN 1.3505 Equiv.	63	35	80 ～ 700	8500	85	EN 1.7242 Equiv.	Standard (S2)	7 ～ 90	9 ～ 80	6 ～ 16	8 ～ 16
-	1	12 Days	10	Straight	20.6	EN 1.3505 Equiv.	63	35	80 ～ 700	8500	85	EN 1.7242 Equiv.	LG2	7 ～ 90	9 ～ 80	6 ～ 16	8 ～ 16
-	1	12 Days	10	Straight	20.6	EN 1.3505 Equiv.	63	35	80 ～ 700	8500	85	EN 1.7242 Equiv.	ET-100K	7 ～ 90	9 ～ 80	6 ～ 16	8 ～ 16
-	1	10 Days	10	Straight	25.8	EN 1.3505 Equiv.	71	42	90 ～ 1300	15400	193	EN 1.7242 Equiv.	Standard (S2)	5 ～ 100	9 ～ 100	6 ～ 20	8 ～ 20
-	1	12 Days	10	Straight	25.8	EN 1.3505 Equiv.	71	42	90 ～ 900	15400	193	EN 1.7242 Equiv.	LG2	7 ～ 100	9 ～ 100	6 ～ 20	8 ～ 20
-	1	12 Days	10	Straight	25.8	EN 1.3505 Equiv.	71	42	90 ～ 900	15400	193	EN 1.7242 Equiv.	ET-100K	7 ～ 100	9 ～ 100	6 ～ 20	8 ～ 20
-	1	10 Days	10	Straight	30.8	EN 1.3505 Equiv.	80	47	100 ～ 1150	18500	272	EN 1.7242 Equiv.	Standard (S2)	10 ～ 120	12 ～ 120	8 ～ 24	10 ～ 25
-	1	12 Days	10	Straight	30.8	EN 1.3505 Equiv.	80	47	100 ～ 1150	18500	272	EN 1.7242 Equiv.	LG2	10 ～ 120	12 ～ 120	8 ～ 24	10 ～ 25
-	1	12 Days	10	Straight	30.8	EN 1.3505 Equiv.	80	47	100 ～ 1150	18500	272	EN 1.7242 Equiv.	ET-100K	10 ～ 120	12 ～ 120	8 ～ 24	10 ～ 25
-	1	9 Days	10	Straight	6	EN 1.4125 Equiv.	25	14	60 ～ 190	1200	3.8	EN 1.4125 Equiv.	Standard (S2)	3 ～ 15	6 ～ 25	3 ～ 5	3 ～ 5
-	1	11 Days	10	Straight	6	EN 1.4125 Equiv.	25	14	60 ～ 190	1200	3.8	EN 1.4125 Equiv.	LG2	3 ～ 15	6 ～ 25	3 ～ 5	3 ～ 5
-	1	11 Days	10	Straight	6	EN 1.4125 Equiv.	25	14	60 ～ 190	1200	3.8	EN 1.4125 Equiv.	ET-100K	3 ～ 15	6 ～ 25	3 ～ 5	3 ～ 5
-	1	9 Days	10	Straight	8	EN 1.4125 Equiv.	25	16	60 ～ 190	1200	4.8	EN 1.4125 Equiv.	Standard (S2)	4 ～ 18	7 ～ 30	4 ～ 6	4 ～ 6
-	1	11 Days	10	Straight	8	EN 1.4125 Equiv.	25	16	60 ～ 190	1200	4.8	EN 1.4125 Equiv.	LG2	4 ～ 18	7 ～ 30	4 ～ 6	4 ～ 6
-	1	11 Days	10	Straight	8	EN 1.4125 Equiv.	25	16	60 ～ 190	1200	4.8	EN 1.4125 Equiv.	ET-100K	4 ～ 18	7 ～ 30	4 ～ 6	4 ～ 6
-	1	9 Days	10	Straight	10.4	EN 1.4125 Equiv.	33	21	60 ～ 390	2400	11	EN 1.4125 Equiv.	Standard (S2)	4 ～ 24	7 ～ 40	4 ～ 8	4 ～ 8
-	1	11 Days	10	Straight	10.4	EN 1.4125 Equiv.	33	21	60 ～ 390	2400	11	EN 1.4125 Equiv.	LG2	4 ～ 24	7 ～ 40	4 ～ 8	4 ～ 8
-	1	11 Days	10	Straight	10.4	EN 1.4125 Equiv.	33	21	60 ～ 390	2400	11	EN 1.4125 Equiv.	ET-100K	4 ～ 24	7 ～ 40	4 ～ 8	4 ～ 8
-	1	9 Days	10	Straight	13.4	EN 1.4125 Equiv.	36	24	60 ～ 390	3300	20	EN 1.4125 Equiv.	Standard (S2)	5 ～ 30	7 ～ 50	5 ～ 10	5 ～ 10
-	1	11 Days	10	Straight	13.4	EN 1.4125 Equiv.	36	24	60 ～ 390	3300	20	EN 1.4125 Equiv.	LG2	5 ～ 30	7 ～ 50	5 ～ 10	5 ～ 10
-	1	11 Days	10	Straight	13.4	EN 1.4125 Equiv.	36	24	60 ～ 390	3300	20	EN 1.4125 Equiv.	ET-100K	5 ～ 30	7 ～ 50	5 ～ 10	5 ～ 10
-	1	9 Days	10	Straight	16.6	EN 1.4125 Equiv.	50	31	70 ～ 390	6200	51	EN 1.4125 Equiv.	Standard (S2)	5 ～ 39	7 ～ 65	6 ～ 12	5 ～ 13
-	1	11 Days	10	Straight	16.6	EN 1.4125 Equiv.	50	31	70 ～ 390	6200	51	EN 1.4125 Equiv.	LG2	5 ～ 39	7 ～ 65	6 ～ 12	5 ～ 13
-	1	11 Days	10	Straight	16.6	EN 1.4125 Equiv.	50	31	70 ～ 390	6200	51	EN 1.4125 Equiv.	ET-100K	5 ～ 39	7 ～ 65	6 ～ 12	5 ～ 13

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Basic information

Shaft end shape (left)	Stepped and Threaded	Shaft end shape (right)	Standard	Type	Solid
Torque	Middle Torque	Number of nuts(pcs.)	1	Nut length	Standard
Preload	Standard	Accuracy Grade	Standard Grade	The circulation type of balls	1-fach