Rotary Axes / Keyway / Optional Machining (Part Numbers - CAD Download)

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Dimensional Drawing

■Detailed Keyway Dimensions

Shaft Dia.	b		t		r
Shaft Dia.	Reference Dimension	Tolerance (N9)	Reference Dimension	Tolerance	r
6	2	－ 0.004 － 0.029	1.2	+ 0.1 0	0.08 or more 0.16
8·10	3	－ 0.004 － 0.029	1.8
12	4	0 － 0.03	2.5
13 to 17	5		3.0		0.16 or more 0.25
18 to 22	6		3.5
25·30	8	0 － 0.036	4.0	+ 0.2 0
35	10	0 － 0.036	5.0		0.25 or more 0.4
40	12	0 － 0.043	5.0
50	14	0 － 0.043	5.5

[ ! ] When KA < 1, KA + A = L, KB + B = L and L - KC - C < 1,
keyway is shaped as shown below.
Rotary Shaft - Straight with Keyway

[ ! ] Surface roughness of Part D for h9 (Cold-drawn) is {{{attr2}}}

. Surface roughness for h7 (Ground) and g6 (Ground) is {{{attr3}}}

.
[ ! ] Number of keyways can be specified up to 3.
[ ! ] When multiple keyways are added, keep 2 mm or more clearance between them.
[ ! ] High hardness stainless steel may have a center hole.

■Circularity and Straightness

[ ! ] Circularity and straightness of Part D are not applicable to h9 (Cold-drawn).

■Circularity of Part D

D		Circularity M
over	or Less	Circularity M
5	13	0.004
13	20	0.005
20	40	0.006
40	50	0.007

■Tolerances of L and Other Dimensions

Dimension		Dimension Tolerance
over	or Less	Dimension Tolerance
2	6	±0.1
6	30	±0.2
30	120	±0.3
120	400	±0.5
400	1000	±0.8

Type		D Tolerance	[M] Material	[S] Surface Treatment
(1)	NSFMKR	h9 (Cold-drawn)	EN 1.1191 Equiv.	—
	SFMKR			Black Oxide
	PSFMKR			Electroless Nickel Plating
	SSFMKR		EN 1.4301 Equiv.	—
(2)	NSFHKR	h7 (Ground)	EN 1.1191 Equiv.	—
	SFHKR			Black Oxide
	PSFHKR			Electroless Nickel Plating
	SSFHKR		EN 1.4301 Equiv.	—
(3)	NSFGKR	g6 (Ground)	EN 1.1191 Equiv.	—
	SFGKR			Black Oxide
	PSFGKR			Electroless Nickel Plating
	SSFGKR		EN 1.4301 Equiv.	—
	AHFGKR		High Hardness Stainless Steel Hardness: 35HRC or More	—

[!] High hardness stainless steel has a lower center hardness.

Specification Table

	Part Number	—	L		Keyway (1)				Keyway (2)				Keyway (3)
				—				—				—
					KA	—	A		KB	—	B		KC	—	C
1 Keyway 2 Keyways 3 Keyways	SFMKR10 SFHKR30 SFGKR25	— — —	325 330 350	— — —	KA20 KA20 KA10	— — —	A50 A50 A10	— —	KB120 KB90	— —	B20 B30	—	KC210	—	C30

(1) h9 (Cold-drawn)

Part Number			L 0.1 mm Increments	Keyway (1)	Keyway (2)	Keyway (3)
Type	D_h9			KA·A	KB·B	KC·C
Type		Tolerance		0.1 mm Increments
NSFMKR SFMKR PSFMKR SSFMKR (D13, 17, 18 or 22 is not available for SSFMKR.)	6	0 −0.030	15.0 to 500.0	KA+A ≤ L KA ≥ 0 b ≤ A ≤ 100	KB+B ≤ L KB ≥ 0 b ≤ B ≤ 100	KC+C ≤ L KC ≥ 0 b ≤ C ≤ 100
	8	0 −0.036	15.0 to 500.0
	10	0 −0.036	15.0 to 800.0
	12	0 −0.043	15.0 to 900.0
	13		15.0 to 900.0
	15		15.0 to 1000.0
	16		15.0 to 1000.0
	17		20.0 to 1000.0
	18		20.0 to 1000.0
	20	0 −0.052	20.0 to 1000.0
	22		20.0 to 1000.0
	25		20.0 to 1000.0
	30		20.0 to 1000.0
	35	0 −0.062	70.0 to 1000.0

(2) h7 (Ground)

Part Number			L 0.1 mm Increments	Keyway (1)	Keyway (2)	Keyway (3)
Type	D_h7			KA·A	KB·B	KC·C
Type		Tolerance		0.1 mm Increments
NSFHKR SFHKR PSFHKR SSFHKR	6	0 −0.012	15.0 to 500.0	KA+A ≤ L KA ≥ 0 b ≤ A ≤ 100	KB+B ≤ L KB ≥ 0 b ≤ B ≤ 100	KC+C ≤ L KC ≥ 0 b ≤ C ≤ 100
	8	0 −0.015	15.0 to 500.0
	10	0 −0.015	15.0 to 800.0
	12	0 −0.018	15.0 to 900.0
	15		15.0 to 1000.0
	17		20.0 to 1000.0
	20	0 −0.021	20.0 to 1000.0
	25		20.0 to 1000.0
	30		20.0 to 1000.0
	35	0 −0.025	70.0 to 1000.0
	40		80.0 to 1000.0
	50		100.0 to 1000.0

(3) g6 (Ground)

Part Number			L 0.1 mm Increments	Keyway (1)	Keyway (2)	Keyway (3)
Type	D_g6			KA·A	KB·B	KC·C
		Tolerance		0.1 mm Increments
NSFGKR SFGKR PSFGKR SSFGKR AHFGKR (Only * marked numbers are available.)	* 6	−0.004 −0.012	15.0 to 500.0	KA+A ≤ L KA ≥ 0 b ≤ A ≤ 100	KB+B ≤ L KB ≥ 0 b ≤ B ≤ 100	KC+C ≤ L KC ≥ 0 b ≤ C ≤ 100
	* 8	−0.005 −0.014	15.0 to 500.0
	* 10		15.0 to 800.0
	* 12	−0.006 −0.017	15.0 to 900.0
	13		15.0 to 900.0
	* 15		15.0 to 1000.0
	* 16		15.0 to 1000.0
	17		20.0 to 1000.0
	18		20.0 to 1000.0
	* 20	−0.007 −0.020	20.0 to 1000.0
	22		20.0 to 1000.0
	* 25		20.0 to 1000.0
	30		20.0 to 1000.0
	35	−0.009 −0.025	70.0 to 1000.0
	40		80.0 to 1000.0
	50		100.0 to 1000.0

Alterations

Alterations
Code

Alteration Details

Applicable Conditions

Ordering Example

Set Screw Flat at One Location
Rotary Shaft - Straight with Keyway: Related Image

FC, G = 1 mm Increments
[ ! ]G ≤ 70

SFHKR30-300-KA100-A20-FC10-G3

WFC

Set Screw Flats at Two Locations
Rotary Shaft - Straight with Keyway: Related Image

WFC, J, W, V = 1 mm Increments
[ ! ]J·V ≤ 70

SFHKR30-300-KA100-A20-WFC10-
J15-W10-V20

SFC

Set Screw Flat, 2 Set Screw Flats (Angle Specified)
Rotary Shaft - Straight with Keyway: Related Image

SFC, SG = 1 mm Increments AG = 15° Increments
[ ! ]SG ≤ 70

SFHKR30-300-KA100-A20-SFC10-
SG3-AG90

KWC

Set Screw Flat, 2 Set Screw Flats on Both Ends
Rotary Shaft - Straight with Keyway: Related Image

KWC = 1 mm Increments
[ NG ] Not applicable when Shaft Dia. ≤ ø6, when D = 13, 16, 17, 18 or 22
[ NG ] Not applicable when L > 680

SFHKR30-300-KA100-A20-FC10-
KWC20

Set Screw Flat, Chamfering Depth Configurable
Rotary Shaft - Straight with Keyway: Related Image

WC = 0.1 mm Increments
[ NG ] Not applicable when Shaft Dia. ≤ ø6, when D = 13, 16, 17, 18 or 22
[ NG ] Not applicable when L > 680
[ ! ] Only when KWC is specified, WC is available

D	WC
8	4.0 to 6.9
10	5.0 to 7.9
12	6.0 to 8.9
15	9.0 to 11.9
20	13.0 to 15.9
25	17.0 to 19.9
30	22.0 to 24.9
35	27.0 to 29.9
40	32.0 to 34.9
50	42.0 to 44.9

SFHKR30-300-KA100-A20-FC10-
KWC20-WC22.0

TA·TB

Retaining Ring Groove
Rotary Shaft - Straight with Keyway: Related Image

TA, TB = 0.1 mm Increments
[ ! ]2 ≤ TA·TB ≤ 150

SFHKR30-300-KA100-A20-TA10-
TB10

Slit Cam Groove
Rotary Shaft - Straight with Keyway: Related Image

UC = 1 mm Increments
[ NG ] Not applicable when Shaft Dia. = ø2 or ø2.5 or when D ≥ 13
[NG] AHFGKR is not available

SFHKR10-300-KA100-A20-UC10

LKC

L Dimension Tolerance Change
Rotary Shaft - Straight with Keyway: Related Image

L < 500···L±0.05 L ≥ 500···L±0.1
[ NG ] Not applicable when L ≥ 800

SFHKR30-300-KA100-A20-LKC

Wrench Flats
Rotary Shaft - Straight with Keyway: Related Image

SC = 1 mm Increments
[ NG ] Not applicable when D ≤ 5

SFHKR30-300-KA100-A20-SC10

Changes Part D Chamfering
Rotary Shaft - Straight with Keyway: Related Image

Changes Part D Chamfering Size　
* Select CD from table
[ ! ] Only values provided on the Applicable Dia. Table are applicable

Chamfering (CD)	Applicable Dia. (D)
C2	⌀6 to ⌀50
C3	⌀8 to ⌀50
C4	⌀10 to ⌀50
C5	⌀12 to ⌀50

SFHKR30-300-KA100-A20-CD5

[!] When combined with other alterations, ± 2 degree phase differential may occur. Provide 2 mm or more clearance between this alteration and others.
[ ! ] When multiple keyways or set screw flats are specified, they are added in the same plane. When the distance of the alterations are over 500 mm, ± 2 degree phase difference may occur.

Detailed Retaining Ring Groove Dimensions for Rotary Shafts

Shaft Dia.	d Tolerance		Slot Width (m) Tolerance		Applicable Retaining Ring
2	1.2	+0.06 0	0.4	+0.05 0	JIS E Type 1.2
2.5	1.5		0.5		JIS E Type 1.5
3	2		0.5		JIS E Type 2
4	3		0.7	+0.1 0	JIS E Type 3
5	4	+0.075 0			JIS E Type 4
6	5				JIS E Type 5
7	6		0.9		JIS E Type 6
8	7	+0.09 0			JIS E Type 7
9	8	+0.09 0			JIS E Type 8
10	9.6	0/－0.09	1.15	+0.14 0	JIS C Type 10
11	10.5	0 -0.11			JIS C Type 11
12	11.5				JIS C Type 12
13	12.4				JIS C Type 13
14	13.4				JIS C Type 14
15	14.3				JIS C Type 15
16	15.2				JIS C Type 16
17	16.2				JIS C Type 17
18	17		1.35		JIS C Type 18
19	18		1.35		JIS C Type 19

Shaft Dia.	d Tolerance		Slot Width (m) Tolerance		Applicable Retaining Ring
20	19	0 -0.21	1.35	+0.14 0	JIS C Type 20
21	20				JIS C Type 21
22	21				JIS C Type 22
23	22				JIS C Type 23
24	22.9				JIS C Type 24
25	23.9				JIS C Type 25
26	24.9				JIS C Type 26
28	26.6		1.65		JIS C Type 28
29	27.6				JIS C Type 29
30	28.6				JIS C Type 30
32	30.3	0 -0.25			JIS C Type 32
35	33				JIS C Type 35
40	38		1.9		JIS C Type 40
45	42.5		1.9		JIS C Type 45
50	47		2.2		JIS C Type 50

[ ! ]2 ≤ TA·TB ≤ 150
[ ! ] An applicable retaining ring is included in the retaining ring groove.

(Reference Value) High Hardness Stainless Steel Center Hardness

D	Center Hardness (HRC)
3	35 or More
4	35 or More
5	35 or More
6	35 or More
8	35 or More
10	30 or More
12	30 or More
15	30 or More
16	30 or More
20	25 or More
25	25 or More

Mechanical Properties (Reference Value)

Material	Tensile Strength (Mpa)	Yielding Point (0.2% Proof Stress) (MPa)	Young's Modulus (GPa)	Transverse Modulus (GPa)	Poisson Ratio
Material	Tensile Strength (Mpa)	Yielding Point (0.2% Proof Stress) (MPa)	Young's Modulus (GPa)	Transverse Modulus (GPa)	Poisson Ratio
EN 1.1191 Equiv.	570 or More	345 or More	200 or More	77 or More	0.3
EN 1.4301 Equiv.	520 or More	210 or More	193 or More	74 or More	0.3
EN 1.7220 Equiv.	930 or More	785 or More	206 or More	79 or More	0.3
High Hardness Stainless Steel	1102	715	199	77	0.3

High Hardness Stainless Steel Material Properties
(Unit: %)

C	Si	Mn	P	S	Ni	Cr
0.15-0.25	≤ 0.50	7.5-9.5	≤ 0.05	≥ 0.12	1.5-3.0	13-15

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Part Number
SSFGKR13-[15-900/0.1]-KA[0-900/0.1]-A[5-100/0.1]
SSFGKR15-[15-800/0.1]-KA[0-800/0.1]-A[5-150/0.1]
SSFGKR16-[15-1000/0.1]-KA[0-1000/0.1]-A[5-100/0.1]
SSFGKR17-[30-900/0.1]-KA[0-900/0.1]-A[5-150/0.1]
SSFGKR18-[20-1000/0.1]-KA[0-1000/0.1]-A[6-100/0.1]
SSFGKR20-[30-1000/0.1]-KA[0-1000/0.1]-A[6-150/0.1]
SSFGKR22-[20-1000/0.1]-KA[0-1000/0.1]-A[6-100/0.1]
SSFGKR25-[50-1000/0.1]-KA[0-1000/0.1]-A[8-100/0.1]
SSFGKR30-[60-1000/0.1]-KA[0-1000/0.1]-A[8-150/0.1]
SSFGKR35-[70-1000/0.1]-KA[0-1000/0.1]-A[10-150/0.1]
SSFGKR40-[80-1000/0.1]-KA[0-1000/0.1]-A[12-150/0.1]
SSFGKR50-[100-1000/0.1]-KA[0-1000/0.1]-A[14-150/0.1]

Standard Unit Price	Minimum order quantity	Standard Shipping Days ?	RoHS	Material	Surface Treatment	D Tolerance	Shaft Dia. D (mm)	Length L (mm)	A (mm)	Keyway (1) [KA] (mm)
-	1	6 Days	-	[Stainless Steel] EN 1.4301 Equiv.	NA	g6 (Ground)	13	15 ～ 900	5 ～ 100	0 ～ 900
-	1	4 Days	10	[Stainless Steel] EN 1.4301 Equiv.	NA	g6 (Ground)	15	15 ～ 800	5 ～ 150	0 ～ 800
-	1	6 Days	-	[Stainless Steel] EN 1.4301 Equiv.	NA	g6 (Ground)	16	15 ～ 1000	5 ～ 100	0 ～ 1000
-	1	4 Days	10	[Stainless Steel] EN 1.4301 Equiv.	NA	g6 (Ground)	17	30 ～ 900	5 ～ 150	0 ～ 900
-	1	6 Days	-	[Stainless Steel] EN 1.4301 Equiv.	NA	g6 (Ground)	18	20 ～ 1000	6 ～ 100	0 ～ 1000
-	1	4 Days	10	[Stainless Steel] EN 1.4301 Equiv.	NA	g6 (Ground)	20	30 ～ 1000	6 ～ 150	0 ～ 1000
-	1	6 Days	-	[Stainless Steel] EN 1.4301 Equiv.	NA	g6 (Ground)	22	20 ～ 1000	6 ～ 100	0 ～ 1000
-	1	4 Days	10	[Stainless Steel] EN 1.4301 Equiv.	NA	g6 (Ground)	25	50 ～ 1000	8 ～ 100	0 ～ 1000
-	1	4 Days	10	[Stainless Steel] EN 1.4301 Equiv.	NA	g6 (Ground)	30	60 ～ 1000	8 ～ 150	0 ～ 1000
-	1	6 Days	10	[Stainless Steel] EN 1.4301 Equiv.	NA	g6 (Ground)	35	70 ～ 1000	10 ～ 150	0 ～ 1000
-	1	6 Days	10	[Stainless Steel] EN 1.4301 Equiv.	NA	g6 (Ground)	40	80 ～ 1000	12 ～ 150	0 ～ 1000
-	1	6 Days	10	[Stainless Steel] EN 1.4301 Equiv.	NA	g6 (Ground)	50	100 ～ 1000	14 ～ 150	0 ～ 1000

App. Example

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Basic information

Basic Shape	Straight	Environmentally friendly	RoHS Compliant (10 Substances)	End Shape (Left)	Straight
Characteristics/Applications	Not Applicable	End Shape (Right)	Straight	Hardness	No Hardened
Keyway	With Keyway	Cleaning Method	No Cleaning	Wrench Flats	Wrench flats option (alteration)

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Basic Attributes

Material
- Steel
  - EN 1.1191 Equiv.
- Stainless Steel
  - EN 1.4301 Equiv.
  - Stainless Steel, austenitic (high hardness: 35 HRC or More)
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Surface Treatment
- NA
- Surface Treatment Provided
  - Black Oxide
  - Electroless Nickel Plating
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Shaft Dia. D(mm)
6

8

10

12

13

15

16

17

18

20

22

25

30

35

40

50
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Length L(mm)
[15-1000/0.1mm Unit(s)]
Clear
A(mm)
[2-150/0.1mm Unit(s)]
Clear
Keyway (1) [KA](mm)
[0-1000/0.1mm Unit(s)]
Clear
Type
- AHFGKR
- NSFGKR
- NSFHKR
- NSFMKR
- PSFGKR
- PSFHKR
- PSFMKR
- SFGKR
- SFHKR
- SFMKR
- SSFGKR
- SSFHKR
- SSFMKR
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D Tolerance
- h9 (Cold-drawn)
- h7 (Ground)
- g6 (Ground)
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