Linear Shafts-One End Threaded

Brand :

MISUMI

Caution

Product Description

[Features]A shaft with a male thread on one end (linear shaft, hardened shaft, guide shaft, slide shaft). L size standard expanded! You can now purchase from an even more complete lineup.

Type			[ M ]Material	[ H ]Hardness	[ S ]Surface Treatment
D Tol. g6	D Tol. h5	D Tol. f8	[ M ]Material	[ H ]Hardness	[ S ]Surface Treatment
SFAN	SFUN	-	SUJ2 Equivalent	Effective Hardened Depth of Induction Hardening >> P.142 SUJ2 Equivalent: 58HRC~ SUS440C or 13Cr stainless: 56HRC~	-
SSFAN	SSFUN	-	SUS440C or 13Cr stainless		-
PSFAN	PSFUN	-	SUJ2 Equivalent		Hard Chrome Plating - Plating Hardness: HV750 ~, Plating Thickness: 5µ or More
PSSFAN	PSSFUN	-	SUS440C or 13Cr stainless
RSFAN	-	-	SUJ2 Equivalent		Low Temp. Black Chrome Plating
-	-	PSFGN	S45C Equivalent	-	Hard Chrome Plating - Plating Hardness: HV750 ~, Plating Thickness: 10µ or More
-	-	PSSFGN	SUS304	-

[ ! ]Annealing may lower hardness at shaft end machined areas (effective thread length + approx. 10mm).
[ ! ]Features of Low Temp. Black Chrome Plating p1_142
[ ! ]L Dimension Tolerance, Circularity, Straightness, Perpendicularity, Concentricity and Changes in Hardness >> P.141

Additional work details

- For details on alterations, please see the tab below.
*If multiple alterations are selected, the relative positions of the processed parts must be spaced at least 2mm apart.
*If alterations are selected, the relative positions of the wrench grooves and drilled holes must be spaced at least 2mm apart.
*Hardness may decrease due to alterations. For information on hardness and surface treatment, please see here .

Alteration
code

Additional work details

Fixed Dimensions

Applicable conditions

Example of specification

￥/1Code

LKC

L dimension and tolerance

Change to precision

Shaft, One-end male thread type Related image 1_Additional processing details

・L<200→L±0.03
・200≦L＜500→L±0.05
・L≧500→L±0.1

[ ! ] L dimension can be specified in 0.1mm increments.

[ NG ] Not applicable when DP≦2.

SFAN30-250.2-F40-B30-P10-LKC

400

Add one flat surface

Shaft, One-end male thread type Related image 2_Additional processing details

D	h
4-5	0.5
6 to 18	1
20 to 40	2
50	3

[ ! ] FC,E = Specify in 1mm increments
[ ! ] D≦30: FC≦5×D,
D≧35: FC≦3×D
[ ! ] E=0 or E≧2

[ NG ] Cannot be used in combination with WFC

SFAN30-250-F40-B30-P10-FC10-E8

200

WFC

Two flat chamfers added

Shaft, One-end male thread type Related image 3_Additional processing details

D	h
4-5	0.5
6 to 18	1
20 to 40	2
50	3

[ ! ] WFC, A, E = Specify in 1mm increments
[ ! ] D≦30: WFC≦5×D,
D≧35: WFC≦3×D
[ ! ] A(E) = 0 or A(E)≧2

[ NG ] There will be a deviation in the angle of the alteration, so
they will not be on the same plane.
[ NG ] Cannot be used in conjunction with FC

SFAN30-250-F40-B30-P10-WFC8-A8-E4

400

Add one 90 degree flat

Shaft, One-end male thread type Related image 4_Additional processing details

D	b1	h
10	6	0.5
12 to 20	6	1.0
twenty five	10
30	12

[ ! ] D = 10 to 30 applicable
[ ! ] RC = specified in 1 mm increments
[ ! ] RC + b1≦L
[ ! ] RC≧2

[ NG ] Cannot be used in combination with WRC

SFAN30-250-F40-B30-P10-RC10

500

WRC

Two 90-degree flats added

Shaft, One-end male thread type Related image 5_Additional processing details

D	b1	h
10	6	0.5
12 to 20	6	1.0
twenty five	10
30	12

[ ! ] D = 10 to 30 applicable
[ ! ] WRC = specified in 1 mm increments
[ ! ] WRC + b1 ≦ L
[ ! ] WRC (Y) ≧ 2

[ NG ] There will be a deviation in the angle of the alteration, so
they will not be on the same plane.
[ NG ] Cannot be used in combination with RC

SFAN30-250-F40-B30-P10-WRC10-Y10

1,000

PMC
PMS

Shaft, One-end male thread type Related image 6_Additional processing details

D	PMC												PMS
4	3	4
5	3	4	5
6	3	4	5	6
8	3	4	5	6	8
10		4	5	6	8	10							10
12			5	6	8	10	12						10	12
13			5	6	8	10	12						10
15			5	6	8	10	12	15					10	12
16			5	6	8	10	12	15					10	12	14
18			5	6	8	10	12	15	17				10	12	14	18
20				6	8	10	12	15	17	20			10	12	14	18
twenty five					8	10	12	15	17	20	twenty five		10	12	14	18
30					8	10	12	15	17	20	twenty five	30	10	12	14	18
35						10	12	15	17	20	twenty five	30	10	12	14	18
40							12	15	17	20	twenty five	30		12	14	18
50								15	17	20	twenty five	30			14	18
pitch	0.35	0.5		0.75	1.0						1.5		1.25	1.5

[Bearing nut fine machining]
Specify "PMC"

[Cylinder fine machining]
Specify "PMS"

SFAN30-250-F40-B30-PMC15

300

One additional keyway

Shaft, One-end male thread type Related image 7_Additional processing details

Shaft, One-end male thread type Related image 9_Additional processing details

Shaft diameter	b		t		r
	Reference dimensions	Tolerance (N9)	Reference dimensions	Tolerance
12	4	0-0.03	2.5	+0.1 0	0.08 to 0.16
16	5		3.0		0.16 to 0.25
20	6		3.5
twenty five	8	0 -0.036	4.0	+0.2 0
30

When KC + G ≥ L, the keyway will have the shape shown below.

Ex.) Shaft, One-end male thread type Related image 9-1_Additional processing details

[ ! ] Applies only to D=12, 16, 20, 25, and 30
[ ! ] KC and G = Specify in 1mm increments
[ ! ] b≦G≦30, G≦L/3
[ ! ] L＞500: 2≦KC≦L/3
L＜500: 2≦KC≦500
[ ! ] M×2＜KC+F

SFAN30-250-F40-B30-P10-KC10-G10

500

Roundness (M), straightness (K), L dimension tolerance, squareness

Shaft, One-end male thread type Related image 1_Circularity

■Straightness measurement method

Shaft, One-end male thread type Related image 2_Circularity

Support both ends of the shaft with V-blocks,
rotate the shaft once at any point, and measure the amplitude of the dial gauge.
Half of the measured amplitude is taken as the straightness.

■ Circularity M

Shaft with outer diameter g6/h5 (hardened)

D		Roundness M
Exceeding	below	Roundness M
3	13	0.004
13	20	0.005
20	40	0.006
40	50	0.007

Unit: mm

Shaft with outer diameter f8 (unhardened)

D		Roundness M
Exceeding	below	Roundness M
5	10	0.011
10	18	0.014
18	30	0.017
30	50	0.020

Unit: mm

■Straightness K

Shaft with outer diameter g6/h5 (hardened)

D	L	Straightness K
4	No conditions	(L/100)×0.05 or less
5	No conditions	(L/100)×0.03 or less
6 to 50	L≦100	0.01 or less
6 to 50	L＞100	(L/100)×0.01 or less

Unit: mm

Shaft with outer diameter f8 (unhardened)

L	Straightness K
L≦100	0.025 or less
L＞100	(L/100)×0.025 or less

Unit: mm

■ L dimension tolerance

Shaft with outer diameter g6/h5 (hardened)

L		L dimension tolerance
Exceeding	below	L dimension tolerance
twenty four	30	±0.2
30	120	±0.3
120	400	±0.5
400	1000	±0.8
1000	1500	±1.2

Unit: mm

Shaft with outer diameter f8 (unhardened)

L		L dimension tolerance
Exceeding	below	L dimension tolerance
twenty four	30	±0.2
30	120	±0.3
120	400	±0.5
400	1000	±0.8
1000	1500	±1.2

Unit: mm

■Coaxiality/squareness

Shaft, One-end male thread type Related image 1_Concentricity and squareness

Hardness and surface treatment precautions

■Decrease in hardness of processed parts

・The base material is processed after hardening, but the annealing process may result in a decrease in hardness.
*Hardness after reduction: Approximately 10 to 40 HRC

■ Hardness reduction range

・About 10 mm from the processed part

(example)

Shaft, One-end male thread type Related image 1_Hardness reduction range

■ Hardness reduction due to annealing

・Male thread ・Keyway ・Flat chamfer ・90 degree flat chamfer

■ Effective hardened layer depth

The effective hardened layer depth varies depending on the external dimensions and material.

Outer diameter D	Effective case depth
	Equivalent to SUJ2	SUS440C/ 13Cr stainless steel
	Equivalent to SUJ2	SUS440C/ 13Cr stainless steel
4	0.5 or higher	0.5 or higher
5
6 to 10
12th and 13th	0.7 or higher
15 to 20	0.7 or higher	0.7 or higher
25 to 50	1.0 or higher	0.7 or higher

■About hard chrome plating and plating layers on processed parts

Hard chrome plating is done after the base material surface is treated, so there is no plating process on the processed area.
In the example below, only the "///" part is hard chrome plated.

Example) Remaining plating: Stepped male thread shaft with additional flat surface

/// part: remaining plating part

Shaft, One-end male thread type Related image 1_About the plating layer

The difference between a shaft and a rotating shaft

・Comparison of specifications between linear shafts and rotary shafts

■ Basic specifications

specification	shaft		Rotation axis
Material	SUJ2 equivalent SUS440C or 13Cr stainless steel	S45C equivalent SUS304	S45C equivalent SUS304	SCM435
Quenching	Induction hardening	-	-	Hardness 30~35HRC
Outer diameter tolerance	g6/h5	f8	g6/h9/h7	g6
Surface Treatment	Non-plated hard chrome plating, low-temperature black chrome plating , electroless nickel plating (full-length surface treatment type)	hard chrome plating	Unplated Iron Oxide Electroless Nickel Plating	Black oxide electroless nickel plating

*Hard chrome plating does not leave a plating layer on the processed area. For more information, please click here .

■Additional work

Additional work name	shaft	Rotation axis
L dimension tolerance change	L<200⇒L±0.03 200≦L<500⇒L±0.05 L≧500⇒L±0.1	L<500⇒L±0.05 L≧500⇒L±0.1 Not applicable for L≧800
Spanner groove addition	Up to two locations can be specified	Up to one location can be specified
Flat chamfering	Up to two locations can be specified	Up to three locations can be specified
2-sided chamfering	Up to two points can be specified Angle specification: Fixed	Up to one location can be specified Angle specification: Can be specified in 15 degree increments
V groove addition work	Up to two locations can be specified	-
Keyway	Up to two locations can be specified . Machining of multi-layered parts: Not allowed	Up to 4 locations can be specified Machining of multi-layered parts: Possible
Male fine thread change	2 types	1 type
Change to fine female thread	1 type	-
Added undercut groove	M6 to M30	M3 to M30
Change of female thread depth	Possible	Possible
Retaining ring groove	Two locations can be specified (retaining ring type, not additional processing)	Two locations on D section and one location on each stepped section. Can be used in combination.
Slit cam groove	-	Up to one location can be specified
Coaxiality change	-	Possible
Left-handed male thread change	-	Possible
Adding a slotted groove	-	Up to one location can be specified
C chamfer width change	-	Possible