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Rotary Shafts - With keyways and retaining ring grooves on both ends. (Part Numbers)

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Lead Time Reduction

MISUMI

New diameter sizes (13, 16, 17, 18 and 22) are added for h9 tolerance types. [3/31/23]
Straight Rotary Shafts with Retaining Ring Grooves on Both Ends and Key Grooves are available in 1045 Carbon Steel or Equivalent and 304 Stainless Steel, with the following options for Surface Treatment : Black Oxide, and Electroless Nickel Plating or No Surface Treatment.
[Diameter range] 6mm - 50mm
[Length range]15mm - 1000mm. Use the alteration LKC to specify the length in 0.1mm increment.

Inch option available, please click Here.

METRIC
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Technical Information

Rotary Shafts - Retaining Ring Grooves on Both Ends and Key Grooves:Related Image

・Materials

Type			D Tolerance	[ M ]Material	[ S ]Surface Treatment
	Standard	Retaining Ring	D Tolerance	[ M ]Material	[ S ]Surface Treatment
①	NSFMKRR	NSFMKRRA	h9 (Cold-drawn)	1045 Carbon Steel or Equivalent	-
	SFMKRR	SFMKRRA			Black Oxide
	PSFMKRR	PSFMKRRA			Electroless Nickel Plating
	SSFMKRR	SSFMKRRA		304 Stainless Steel	-
②	NSFHKRR	NSFHKRRA	h7 (Ground)	1045 Carbon Steel or Equivalent	-
	SFHKRR	SFHKRRA			Black Oxide
	PSFHKRR	PSFHKRRA			Electroless Nickel Plating
	SSFHKRR	SSFHKRRA		304 Stainless Steel	-
③	NSFGKRR	NSFGKRRA	g6 (Ground)	1045 Carbon Steel or Equivalent	-
	SFGKRR	SFGKRRA			Black Oxide
	PSFGKRR	PSFGKRRA			Electroless Nickel Plating
	SSFGKRR	SSFGKRRA		304 Stainless Steel	-

Specifications

Part Number

Keyway ①

Keyway ②

Keyway ③

1 Keyway
2 Keyways
3 Keyways

SFMKRR10
SFHKRR30
SFHKRR25

-
-
-

325
300
350

-
-
-

F10
F10
F10

-
-
-

S10
S10
S10

-
-
-

KA20
KA20
KA10

-
-
-

A50
A20
A10

-
-

KB120
KB90

-
-

B20
B30

KC210

C30

①h9 (Cold-drawn)

Part Number				L=0.1mm Increment	F, S 1mm Increment	Keyway ①	Keyway ②	Keyway ③	Retaining Ring No. Accessories: Retaining Ring 2 pcs.(Retaining Ring Type only)
Type		D_h9				KA, A	KB, B	KC, C
Standard	Retaining Ring		Tolerance			1mm Increment
NSFMKRR SFMKRR PSFMKRR SSFMKRR (D6 is not available for SSFMKRR.)	NSFMKRRA SFMKRRA PSFMKRRA SSFMKRRA (D6 is not available for SSFMKRRA.)	6	0 -0.030	15.0~400.0	2≤F, S	KA+A≤L-S KA≥F b≤A≤100	KB+B≤L-S KB≥KA+A b≤B≤100	KC+C≤L-S KC≥KB+B b≤C≤100	NETWS5
		8	0 -0.036	15.0~500.0	3≤F, S				NETWS7
		10		15.0~600.0					STWS10
		12	0 -0.043	15.0~700.0	4≤F, S				STWS12
		15		15.0~800.0					STWS15
		20	0 -0.052	30.0~1000.0					STWS20
		25		50.0~1000.0	5≤F, S				STWS25
		30		60.0~1000.0					STWS30
		35	0 -0.062	70.0~1000.0					STWS35

②h7 (Ground)

Part Number				L=0.1mm Increment	F, S 1mm Increment	Keyway ①	Keyway ②	Keyway ③	Retaining Ring No. Accessories: Retaining Ring 2 pcs.(Retaining Ring Type only)
Type		D_h7				KA, A	KB, B	KC, C
Standard	Retaining Ring		Tolerance			1mm Increment
NSFHKRR SFHKRR PSFHKRR SSFHKRR	NSFHKRRA SFHKRRA PSFHKRRA SSFHKRRA	6	0 -0.012	15.0~400.0	2≤F, S	KA+A≤L-S KA≥F b≤A≤100	KB+B≤L-S KB≥KA+A b≤B≤100	KC+C≤L-S KC≥KB+B b≤C≤100	NETWS5
		8	0 -0.015	15.0~500.0	3≤F, S				NETWS7
		10	0 -0.015	15.0~600.0	3≤F, S				STWS10
		12	0 -0.018	15.0~700.0	4≤F, S				STWS12
		15		15.0~800.0					STWS15
		17		30.0~900.0					STWS17
		20	0 -0.021	30.0~1000.0					STWS20
		25		50.0~1000.0	5≤F, S				STWS25
		30		60.0~1000.0					STWS30
		35	0 -0.025	70.0~1000.0					STWS35
		40		80.0~1000.0					STWS40
		50		100.0~1000.0					STWS50

③g6 (Ground)

Part Number				L=0.1mm Increment	F, S 1mm Increment	Keyway ①	Keyway ②	Keyway ③	Retaining Ring No. Accessories: Retaining Ring 2 pcs.(Retaining Ring Type only)
Type		D_g6				KA, A	KB, B	KC, C
Standard	Retaining Ring		Tolerance			1mm Increment
NSFGKRR SFGKRR PSFGKRR SSFGKRR (D13, 16, 18 and 22 are not available for SSFGKRR.)	NSFGKRRA SFGKRRA PSFGKRRA SSFGKRRA (D13, 16, 18 and 22 are not available for SSFGKRR.)	6	0.004 -0.012	15.0~400.0	2≤F, S	KA+A≤L-S KA≥F b≤A≤100	KB+B≤L-S KB≥KA+A b≤B≤100	KC+C≤L-S KC≥KB+B b≤C≤100	NETWS5
		8	-0.005 -0.014	15.0~500.0	3≤F, S				NETWS7
		10		15.0~600.0					STWS10
		12	-0.006 -0.017	15.0~700.0	4≤F, S				STWS12
		13		15.0~700.0					STWS13
		15		15.0~800.0					STWS15
		16		15.0~900.0					STWS16
		17		30.0~900.0					STWS17
		18		30.0~900.0					STWS18
		20	-0.007 -0.020	30.0~1000.0					STWS20
		22		40.0~1000.0					STWS22
		25		50.0~1000.0	5≤F, S				STWS25
		30		60.0~1000.0					STWS30
		35	-0.009 -0.025	70.0~1000.0					STWS35
		40		80.0~1000.0					STWS40
		50		100.0~1000.0					STWS50

Alterations

Part Number

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*In order to open the CAD Data download and 3D preview screen, the part number must be fixed.
Please confirm the part number from "Specification / Dimension"on the left side, and then perform the CAD Data Download / 3D Preview operation.

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Part Number

Part Number	Minimum order quantity	Volume Discount	Days to Ship	RoHS	Shaft Dia. D (mm)	Material	Surface Finish	Shaft Dia. Tolerance (Metric Only)	Length L (mm)	A (mm)	F (mm)	Keyway (1) [KA] (mm)	S (mm)

More Information

Number of keyways can be specified up to 3.

Example

Technical Information

Detailed Dimensions for Keyway & Threaded Relief of Rotary Shafts & Driving Shafts

Detailed dimensions of Keyway for Shaft Dia.(D·P·Q)

Shaft Diameter	b		t		r
Shaft Diameter	Reference Dimension	Tolerance (N9)	Reference Dimension	Tolerance	r
6-7	2	-0.004 -0.029	1.2	0.1 -0	0.08- 0.16
8-10	3	-0.004 -0.029	1.8
11-12	4	0 -0.03	2.5
13-17	5		3.0		0.16- 0.25
18-22	6		3.5
23-30	8	0 -0.036	4.0	+0.2 0
31-38	10	0 -0.036	5.0		0.25- 0.4
39-44	12	0 -0.043	5.0
45-50	14	0 -0.043	5.0

[ ! ]The example below shows the keyway shape for the specs KC, WKC, K=0, KC+A≥L and WKC+C+K+E>L.

Support Information

Basis of Fitting Selection/Dimensional Tolerances & Fitting

Click here for the information

Difference between Shatf and Rotary Shaft

Comparison of specifications between linear shafts and shafts for rotary shafts

Basic Specifications

Specifications	Rotary Shafts		Linear Shafts
Material	1045 Carbon Steel or Equivalent 304 Stainless Steel	4137 Alloy Steel or Equivalent	52100 Bearing Steel Equivalent SUS440C(13Cr) Stainless Steel Equivalent	1045 Carbon Steel Equivalent or 304 Stainless Steel
Quenching/Hardness	-	Hardness 30-35HRC	High-frequency quenching	-
Outer Diameter Tolerance	h9/h7	g6	g6/h5	f8
Surface Treatment	No plating Black Oxide Electroless Nickel Plating	Black Oxide Electroless Nickel Plating	No Plating Hard Chrome Plating Low Temp. Black Chrome Plating Electroless Nickel Plating (Only Surface Treatment Fully Plated Type)	Hard Chrome Plating

Alterations

Alterations	Rotary Shafts	Linear Shafts
L Dimension Tolerance	L<500: L±0.05 L≧500: L±0.1 L≧800: NOT applicable	L<200: L±0.03 200≦L<500: L±0.05 L≧500: L±0.1
Flat Key Grooves	Up to 1 location specified	Up to 2 locations specified
Set Screw Flat	Up to 3 locations specified	Up to 2 locations specified
2 Set Screw Flat	Up to 1 location specified Angle Specification: 15 Deg. Inc	Up to 2 locations specified Angle Specification: Fixed
V-groove	-	Up to 2 locations specified
Keyway	Up to 4 locations specified Specified on step: Applicable	Up to 2 locations specified Specified on step: NOT applicable
Change to Fine Threads	1 type	2 type
Change to Fine Threads Tap	-	1 type
Undercut	M3~M30	M6~M30
Tapped Depth	Applicable	Applicable
Retainning Ring Groove	Up to 2 locations on D and 1 locationon each step *Can be chosen together	Up to 2 locations specified (Only Retaining Ring type applicable)
Slit Cam Groove	Up to 1 location specified	-
Concentricity	Applicable	-
Left Hand Thread	Applicable	-
Slit	Up to 1 location specified	-
C Chamfering Width	Applicable	-

*Click here for information of Rotary Shaft Alteration Guide or Shaft Alteration Guide

Material/Surface General Information

General Material Information

General Surface Treatment Information

Comparisons of Materials between JIS & Foreign Standards

Compatible Models

Category	Ball Bearings	Bearings with Housings	Flexible Couplings	Timing Pulleys	Timing Belts
Image

Product TOP

Basic Information

Basic Shape	Straight	End Shape (Left)	Retaining Ring Groove	End Shape (Right)	Retaining Ring Groove
Heat Treatment	Not Hardened	Keyway	With Keyway

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212 Part Numbers

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Completed

Specification/Dimensions

Shaft Dia. D(mm)
6

8

10

12

13

15

16

17

18

20

22

25

30

35

40

50
Clear
Material
- Steel
  - 1045 Carbon Steel or Equivalent
- 304 Stainless Steel
Clear
Surface Finish
- None
- Black Oxide
- Electroless Nickel
Clear
Shaft Dia. Tolerance (Metric Only)
- h9 (Cold-drawn)
- h7 (Ground)
- g6 (Ground)
Clear
Length L(mm)
[15-1000/0.1mm Unit(s)][70-800/1mm Unit(s)]
Clear
A(mm)
[2-150/0.1mm Unit(s)][2-100/1mm Unit(s)]
Clear
F(mm)
[2-499/0.1mm Unit(s)][2-400/1mm Unit(s)]
Clear
Keyway (1) [KA](mm)
[0-1000/0.1mm Unit(s)][0-795/1mm Unit(s)]
Clear
S(mm)
[2-499/0.1mm Unit(s)][2-400/1mm Unit(s)]
Clear
type
- PSFGKRR
- PSFGKRRA
- PSFHKRR
- PSFHKRRA
- PSFMKRR
- PSFMKRRA
- SFGKRR
- SFGKRRA
- SFHKRR
- SFHKRRA
- SFMKRR
- SFMKRRA
- SSFGKRR
- SSFGKRRA
- SSFHKRR
- SSFHKRRA
- SSFMKRR
- SSFMKRRA
Clear
CAD
- 2D
- 3D
Clear