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Ball Splines - One End Tapped

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MISUMI

ball spline with a female thread on one end. This standard enables highly accurate linear motion and rotational torque transmission. In addition, the contact area between the ball groove machined into the shaft and the steel ball is large, resulting in a large load capacity and long life. Even a single axis can be used as a linear motion guide, allowing for a compact design.
A dustproof seal is attached to the nut, so the ball will not fall off even if the spline shaft is removed.

(i)Caution

Please check the content on our website as the PDF does not contain the most up-to-date information.

Part Number

Configured Part Number is shown.

Drawing/Specifications
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Part Numbers
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Catalog
Technical Information

One End Tapped	Spline Shafts[ M ] SUJ2 Equivalent Nut [ M ] SCM415 Equivalent [ H ] Hardness: 58HRC~	Spline Shaft, Nut [ M ] Material: SUS440C Equivalent [ H ] Hardness: 55HRC~
One End Tapped	Nut 1 pc.	Nut 1 pc.
With Round Flange Nut	BSFM	BSFMS
With Compact Flange Nut	BSFN	-
With Straight Nut	BSFS	BSFSS

Specifications

Part Number	-	L	-	M
BSFS10 BSFS10G BSFS10L	- - -	350 350 350	- - -	M5 M5 M5

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

■Spline Shafts

Part Number		L 1mm Increment	M (Coarse) Selection								D	Mass (kg/m)
Type	No.	1-Nut Type	M (Coarse) Selection								D	Mass (kg/m)
BSFM BSFN BSFS BSFMS BSFSS	*6	60~400(190)	3								6	0.23
	*8	60~400(190)	3	4							8	0.39
	*10	60~600(390)	3	4	5						10.4	0.65
	*13	60~600(390)		4	5	6					13.4	1.11
	*16	70~600(390)		4	5	6	8				16.6	1.65
	20	80~700			5	6	8	10			20.6	2.57
	25	90~900			5	6	8	10	12		25.8	4.04
	30	100~1150				6	8	10	12	16	30.8	5.85

[ ! ]For BSFMS and BSFSS, only * marked sizes are available, and the Max. L dimension is in ( ).
[ ! ]For BSFN, 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 SUS440C Equivalent. [ ! ]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 SUS440C Equivalent. [ ! ]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.

Alterations

Part Number

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Part Number
BSFM6-[60-400/1]-M3
BSFM6G-[60-400/1]-M3
BSFM6L-[60-400/1]-M3
BSFM8-[60-400/1]-M[3,4]
BSFM8G-[60-400/1]-M[3,4]
BSFM8L-[60-400/1]-M[3,4]
BSFM10-[60-600/1]-M[3,4,5]
BSFM10G-[60-600/1]-M[3,4,5]
BSFM10L-[60-600/1]-M[3,4,5]
BSFM13-[60-600/1]-M[4,5,6]
BSFM13G-[60-600/1]-M[4,5,6]
BSFM13L-[60-600/1]-M[4,5,6]
BSFM16-[70-600/1]-M[4,5,6,8]
BSFM16G-[70-600/1]-M[4,5,6,8]
BSFM16L-[70-600/1]-M[4,5,6,8]
BSFM20-[80-700/1]-M[5,6,8,10]
BSFM20G-[80-700/1]-M[5,6,8,10]
BSFM20L-[80-700/1]-M[5,6,8,10]
BSFM25-[90-900/1]-M[5,6,8,10,12]
BSFM25G-[90-900/1]-M[5,6,8,10,12]
BSFM25L-[90-900/1]-M[5,6,8,10,12]
BSFM30-[100-1150/1]-M[6,8,10,12,16]
BSFM30G-[100-1150/1]-M[6,8,10,12,16]
BSFM30L-[100-1150/1]-M[6,8,10,12,16]
BSFMS6-[60-190/1]-M3
BSFMS6G-[60-190/1]-M3
BSFMS6L-[60-190/1]-M3
BSFMS8-[60-190/1]-M[3,4]
BSFMS8G-[60-190/1]-M[3,4]
BSFMS8L-[60-190/1]-M[3,4]
BSFMS10-[60-390/1]-M[3,4,5]
BSFMS10G-[60-390/1]-M[3,4,5]
BSFMS10L-[60-390/1]-M[3,4,5]
BSFMS13-[60-390/1]-M[4,5,6]
BSFMS13G-[60-390/1]-M[4,5,6]
BSFMS13L-[60-390/1]-M[4,5,6]
BSFMS16-[70-390/1]-M[4,5,6,8]
BSFMS16G-[70-390/1]-M[4,5,6,8]
BSFMS16L-[70-390/1]-M[4,5,6,8]
BSFN6-[60-400/1]-M3
BSFN6G-[60-400/1]-M3
BSFN6L-[60-400/1]-M3
BSFN8-[60-400/1]-M[3,4]
BSFN8G-[60-400/1]-M[3,4]
BSFN8L-[60-400/1]-M[3,4]
BSFN10-[60-600/1]-M[3,4,5]
BSFN10G-[60-600/1]-M[3,4,5]
BSFN10L-[60-600/1]-M[3,4,5]

Standard Unit Price	Minimum order quantity	Days to Ship	RoHS	Nut Type	Shaft Outer Dia. D (Ø)	Nut Overall Length (mm)	Nut O.D. (Ø)	Shaft material	Shaft Overall Length L (mm)	Basic Load Rating: Dynamic Load (N)	Allowable Torque (N•m)	Nut Material	Grease	M (mm)
-	1 Piece(s)	9 Day(s) or more	10	[Flanged Type] Round Flange	6	25	14	SUJ2 Equivalent	60 ～ 400	1200	3.8	SCM415 Equivalent	Standard (S2)	3
-	1 Piece(s)	11 Day(s) or more	10	[Flanged Type] Round Flange	6	25	14	SUJ2 Equivalent	60 ～ 400	1200	3.8	SCM415 Equivalent	LG2	3
-	1 Piece(s)	11 Day(s) or more	10	[Flanged Type] Round Flange	6	25	14	SUJ2 Equivalent	60 ～ 400	1200	3.8	SCM415 Equivalent	ET-100K	3
-	1 Piece(s)	9 Day(s) or more	10	[Flanged Type] Round Flange	8	25	16	SUJ2 Equivalent	60 ～ 400	1200	4.8	SCM415 Equivalent	Standard (S2)	3 ～ 4
-	1 Piece(s)	11 Day(s) or more	10	[Flanged Type] Round Flange	8	25	16	SUJ2 Equivalent	60 ～ 400	1200	4.8	SCM415 Equivalent	LG2	3 ～ 4
-	1 Piece(s)	11 Day(s) or more	10	[Flanged Type] Round Flange	8	25	16	SUJ2 Equivalent	60 ～ 400	1200	4.8	SCM415 Equivalent	ET-100K	3 ～ 4
-	1 Piece(s)	9 Day(s) or more	10	[Flanged Type] Round Flange	10.4	40	21	SUJ2 Equivalent	60 ～ 600	3800	19	SCM415 Equivalent	Standard (S2)	3 ～ 5
-	1 Piece(s)	11 Day(s) or more	10	[Flanged Type] Round Flange	10.4	40	21	SUJ2 Equivalent	60 ～ 600	3800	19	SCM415 Equivalent	LG2	3 ～ 5
-	1 Piece(s)	11 Day(s) or more	10	[Flanged Type] Round Flange	10.4	40	21	SUJ2 Equivalent	60 ～ 600	3800	19	SCM415 Equivalent	ET-100K	3 ～ 5
-	1 Piece(s)	9 Day(s) or more	10	[Flanged Type] Round Flange	13.4	44	24	SUJ2 Equivalent	60 ～ 600	4600	28	SCM415 Equivalent	Standard (S2)	4 ～ 6
-	1 Piece(s)	11 Day(s) or more	10	[Flanged Type] Round Flange	13.4	44	24	SUJ2 Equivalent	60 ～ 600	4600	28	SCM415 Equivalent	LG2	4 ～ 6
-	1 Piece(s)	11 Day(s) or more	10	[Flanged Type] Round Flange	13.4	44	24	SUJ2 Equivalent	60 ～ 600	4600	28	SCM415 Equivalent	ET-100K	4 ～ 6
-	1 Piece(s)	9 Day(s) or more	10	[Flanged Type] Round Flange	16.6	50	31	SUJ2 Equivalent	70 ～ 600	6200	51	SCM415 Equivalent	Standard (S2)	4 ～ 8
-	1 Piece(s)	11 Day(s) or more	10	[Flanged Type] Round Flange	16.6	50	31	SUJ2 Equivalent	70 ～ 600	6200	51	SCM415 Equivalent	LG2	4 ～ 8
-	1 Piece(s)	11 Day(s) or more	10	[Flanged Type] Round Flange	16.6	50	31	SUJ2 Equivalent	70 ～ 600	6200	51	SCM415 Equivalent	ET-100K	4 ～ 8
-	1 Piece(s)	9 Day(s) or more	10	[Flanged Type] Round Flange	20.6	63	35	SUJ2 Equivalent	80 ～ 700	8500	85	SCM415 Equivalent	Standard (S2)	5 ～ 10
-	1 Piece(s)	11 Day(s) or more	10	[Flanged Type] Round Flange	20.6	63	35	SUJ2 Equivalent	80 ～ 700	8500	85	SCM415 Equivalent	LG2	5 ～ 10
-	1 Piece(s)	11 Day(s) or more	10	[Flanged Type] Round Flange	20.6	63	35	SUJ2 Equivalent	80 ～ 700	8500	85	SCM415 Equivalent	ET-100K	5 ～ 10
-	1 Piece(s)	9 Day(s) or more	10	[Flanged Type] Round Flange	25.8	71	42	SUJ2 Equivalent	90 ～ 900	15400	193	SCM415 Equivalent	Standard (S2)	5 ～ 12
-	1 Piece(s)	11 Day(s) or more	10	[Flanged Type] Round Flange	25.8	71	42	SUJ2 Equivalent	90 ～ 900	15400	193	SCM415 Equivalent	LG2	5 ～ 12
-	1 Piece(s)	11 Day(s) or more	10	[Flanged Type] Round Flange	25.8	71	42	SUJ2 Equivalent	90 ～ 900	15400	193	SCM415 Equivalent	ET-100K	5 ～ 12
-	1 Piece(s)	9 Day(s) or more	10	[Flanged Type] Round Flange	30.8	80	47	SUJ2 Equivalent	100 ～ 1150	18500	272	SCM415 Equivalent	Standard (S2)	6 ～ 16
-	1 Piece(s)	11 Day(s) or more	10	[Flanged Type] Round Flange	30.8	80	47	SUJ2 Equivalent	100 ～ 1150	18500	272	SCM415 Equivalent	LG2	6 ～ 16
-	1 Piece(s)	11 Day(s) or more	10	[Flanged Type] Round Flange	30.8	80	47	SUJ2 Equivalent	100 ～ 1150	18500	272	SCM415 Equivalent	ET-100K	6 ～ 16
-	1 Piece(s)	8 Day(s) or more	10	[Flanged Type] Round Flange	6	25	14	SUS440C Equivalent	60 ～ 190	1200	3.8	SUS440C Equivalent	Standard (S2)	3
-	1 Piece(s)	10 Day(s) or more	10	[Flanged Type] Round Flange	6	25	14	SUS440C Equivalent	60 ～ 190	1200	3.8	SUS440C Equivalent	LG2	3
-	1 Piece(s)	10 Day(s) or more	10	[Flanged Type] Round Flange	6	25	14	SUS440C Equivalent	60 ～ 190	1200	3.8	SUS440C Equivalent	ET-100K	3
-	1 Piece(s)	8 Day(s) or more	10	[Flanged Type] Round Flange	8	25	16	SUS440C Equivalent	60 ～ 190	1200	4.8	SUS440C Equivalent	Standard (S2)	3 ～ 4
-	1 Piece(s)	10 Day(s) or more	10	[Flanged Type] Round Flange	8	25	16	SUS440C Equivalent	60 ～ 190	1200	4.8	SUS440C Equivalent	LG2	3 ～ 4
-	1 Piece(s)	10 Day(s) or more	10	[Flanged Type] Round Flange	8	25	16	SUS440C Equivalent	60 ～ 190	1200	4.8	SUS440C Equivalent	ET-100K	3 ～ 4
-	1 Piece(s)	8 Day(s) or more	10	[Flanged Type] Round Flange	10.4	33	21	SUS440C Equivalent	60 ～ 390	2400	11	SUS440C Equivalent	Standard (S2)	3 ～ 5
-	1 Piece(s)	10 Day(s) or more	10	[Flanged Type] Round Flange	10.4	33	21	SUS440C Equivalent	60 ～ 390	2400	11	SUS440C Equivalent	LG2	3 ～ 5
-	1 Piece(s)	10 Day(s) or more	10	[Flanged Type] Round Flange	10.4	33	21	SUS440C Equivalent	60 ～ 390	2400	11	SUS440C Equivalent	ET-100K	3 ～ 5
-	1 Piece(s)	8 Day(s) or more	10	[Flanged Type] Round Flange	13.4	36	24	SUS440C Equivalent	60 ～ 390	3300	20	SUS440C Equivalent	Standard (S2)	4 ～ 6
-	1 Piece(s)	10 Day(s) or more	10	[Flanged Type] Round Flange	13.4	36	24	SUS440C Equivalent	60 ～ 390	3300	20	SUS440C Equivalent	LG2	4 ～ 6
-	1 Piece(s)	10 Day(s) or more	10	[Flanged Type] Round Flange	13.4	36	24	SUS440C Equivalent	60 ～ 390	3300	20	SUS440C Equivalent	ET-100K	4 ～ 6
-	1 Piece(s)	8 Day(s) or more	10	[Flanged Type] Round Flange	16.6	50	31	SUS440C Equivalent	70 ～ 390	6200	51	SUS440C Equivalent	Standard (S2)	4 ～ 8
-	1 Piece(s)	10 Day(s) or more	10	[Flanged Type] Round Flange	16.6	50	31	SUS440C Equivalent	70 ～ 390	6200	51	SUS440C Equivalent	LG2	4 ～ 8
-	1 Piece(s)	10 Day(s) or more	10	[Flanged Type] Round Flange	16.6	50	31	SUS440C Equivalent	70 ～ 390	6200	51	SUS440C Equivalent	ET-100K	4 ～ 8
-	1 Piece(s)	9 Day(s) or more	10	[Flanged Type] Compact Flange	6	25	14	SUJ2 Equivalent	60 ～ 400	1200	3.8	SCM415 Equivalent	Standard (S2)	3
-	1 Piece(s)	11 Day(s) or more	10	[Flanged Type] Compact Flange	6	25	14	SUJ2 Equivalent	60 ～ 400	1200	3.8	SCM415 Equivalent	LG2	3
-	1 Piece(s)	11 Day(s) or more	10	[Flanged Type] Compact Flange	6	25	14	SUJ2 Equivalent	60 ～ 400	1200	3.8	SCM415 Equivalent	ET-100K	3
-	1 Piece(s)	9 Day(s) or more	10	[Flanged Type] Compact Flange	8	25	16	SUJ2 Equivalent	60 ～ 400	1200	4.8	SCM415 Equivalent	Standard (S2)	3 ～ 4
-	1 Piece(s)	11 Day(s) or more	10	[Flanged Type] Compact Flange	8	25	16	SUJ2 Equivalent	60 ～ 400	1200	4.8	SCM415 Equivalent	LG2	3 ～ 4
-	1 Piece(s)	11 Day(s) or more	10	[Flanged Type] Compact Flange	8	25	16	SUJ2 Equivalent	60 ～ 400	1200	4.8	SCM415 Equivalent	ET-100K	3 ～ 4
-	1 Piece(s)	9 Day(s) or more	10	[Flanged Type] Compact Flange	10.4	40	21	SUJ2 Equivalent	60 ～ 600	3800	19	SCM415 Equivalent	Standard (S2)	3 ～ 5
-	1 Piece(s)	11 Day(s) or more	10	[Flanged Type] Compact Flange	10.4	40	21	SUJ2 Equivalent	60 ～ 600	3800	19	SCM415 Equivalent	LG2	3 ～ 5
-	1 Piece(s)	11 Day(s) or more	10	[Flanged Type] Compact Flange	10.4	40	21	SUJ2 Equivalent	60 ～ 600	3800	19	SCM415 Equivalent	ET-100K	3 ～ 5

More Information

Product TOP

Basic Information

Type	Solid Shaft	Nut Length	Standard	Preload	Standard
Accuracy Grade	Standard Grade	End Shape (Left)	Tapped	End Shape (Right)	Standard
Torque	Middle Torque	Ball Recirculating Type	Single

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48 Part Numbers

View Part Numbers

Configure Remaining Specifications

Completed

Specification/Dimensions

Shaft Outer Dia. D(Ø)
6

8

10.4

13.4

16.6

20.6

25.8

30.8
Clear
Nut Overall Length(mm)
25

33

36

40

44

50

63

71

80
Clear
Nut O.D.(Ø)
14

16

21

24

31

35

42

47
Clear
Shaft material
- SUS440C Equivalent
- SUJ2 Equivalent
Clear
Shaft Overall Length L(mm)
[60-1150/1mm Unit(s)]
Clear
Nut Material
- SCM415 Equivalent
- SUS440C Equivalent
Clear
Grease
- ET-100K
- LG2
- Standard (S2)
Clear
M(mm)
3

4

5

6

8

10

12

16
Clear
type
- BSFM
- BSFMS
- BSFN
- BSFS
- BSFSS
Clear
Nut Type
- Straight
- Flanged Type
  - Compact Flange
  - Round Flange
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

8 Day(s) or Less

9 Day(s) or Less

10 Day(s) or Less

11 Day(s) or Less
Clear

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The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

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Ball Splines - One End Tapped

(i)Caution

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Part Number

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Specification/Dimensions

Shaft Outer Dia. D(Ø)

Nut Overall Length(mm)

Nut O.D.(Ø)

Shaft material

Shaft Overall Length L(mm)

Nut Material

Grease

M(mm)

type

Nut Type

CAD

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