Linear Shafts One End Stepped, Both Ends Tapped/One End Tapped

Brand :

MISUMI

Caution

Some Page Materials are under updating.

Product Description

This is an economy item, The price is cheaper than the MISUMI standard product.

Product Overview

Linear guide shafts are high-precision shaft products that can be used with linear bushings and other bushing-type products. They not only offer excellent wear resistance, but also provide a variety of additional machining options.

Dimensional Drawing

MISUMI Linear Guide Shafts One End Stepped Both Ends Tapped/One End Tapped Rotary Shaft Hollow Shaft Chrome Plated Bar

Material Table

Type				Material	Hardness	Surface Treatment
Both ends tapped type		One end tapped type
Standard
D tolerance g7	D tolerance f8	D tolerance g7	D tolerance f8
E-SFAA	-	E-SFNA	-	S45C or GCr15	High-frequency quenching Effective hardened layer depth Please click Surface Hardness Standard S45C or GCr15 55HRC~ SUS440C or equivalent high-hardness corrosion-resistant steel 53HRC or more	-
E-SSFAA	-	E-SSFNA	-	SUS440C or equivalent high-hardness corrosion-resistant steel		-
E-PSFAA	-	E-PSFNA	-	S45C or GCr15		Hard Chrome Plating Plating Hardness HV750~ Plating Thickness 3µ or more~
E-PSSFAA	-	E-PSSFNA	-	SUS440C or equivalent high-hardness corrosion-resistant steel
-	E-PSFGA	-	E-PSNGA	S45C Equivalent	-	Hard Chrome Plating Coating Hardness HV750~ Coating Thickness 10µ or more~

The shaft end processing section (effective thread length + approx. 10 mm) may experience reduced hardness due to the annealing effect of the processing.

If there are requirements for rust prevention, give priority to products with hard chrome plated surface treatment. Please click

Rust Prevention Methods

If used together with linear bushings, please select products with high-frequency quenching.

■ Tolerance of Section D

D	g7	f8
8	-0.005 -0.020	-0.013 -0.035
10
12	-0.006 -0.024	-0.016 -0.043
13
15
16
18
20	-0.007 -0.028	-0.020 -0.053
25
30

Specification Overview

Type				Material	Hardness	Surface Treatment	D(mm)	L(mm)
Both ends tapped type		One end tapped type
Standard
D tolerance g7	D tolerance f8	D tolerance g7	D tolerance f8
E-SFAA	-	E-SFNA	-	S45C or GCr15	High-frequency quenching Effective hardened layer depth Please click Surface Hardness Standard S45C or GCr15 55HRC~ SUS440C or equivalent high-hardness corrosion-resistant steel 53HRC or more	-	8 to 30	25 to 1498
E-SSFAA	-	E-SSFNA	-	SUS440C or equivalent high-hardness corrosion-resistant steel
E-PSFAA	-	E-PSFNA	-	S45C or GCr15		Hard Chrome Plating Plating Hardness HV750~ Plating Thickness 3µ or more~
E-PSSFAA	-	E-PSSFNA	-	SUS440C or equivalent high-hardness corrosion-resistant steel
-	E-PSFGA	-	E-PSNGA	S45C Equivalent	-	Hard Chrome Plating Coating Hardness HV750~ Coating Thickness 10µ or more~

The shaft end processing section (effective thread length + approx. 10 mm) may experience reduced hardness due to the annealing effect of the processing.

If there are requirements for rust prevention, give priority to products with hard chrome plated surface treatment. Please click

Rust Prevention Methods

If used together with linear bushings, please select products with high-frequency quenching.

Alterations

Code

Spec.

MISUMI Linear Guide Shaft: One End Stepped Type, Both Ends Internal Thread Type / One End Internal Thread Type, Steering Shaft, Smooth Shaft, Chrome-Plated Rod

LKC

Change L dimension tolerance
Specified method LKC

Not applicable when D-P ≤ 2
When using LKC, the specified unit for L dimension can be 0.1 mm

L<200 → L±0.03
200 ≤ L<500 → L±0.05
L ≥ 500 → L±0.1

1 additional wrench slot machining
Specified method SC5

SC = specified unit 1 mm

SC+ℓ₁<L

SC=0 or SC ≥ 1
Applicable conditions D=8 or above applicable

Cannot be used together with WSC

D	W	ℓ₁
8	7	8
10	8	8
12	10	10
13	11
15	13

D	W	ℓ₁
16	14	10
20	17
25	22
30	27	15

WSC

Additional wrench slot machining at 2 locations
Specified Method WSC12-X8

WSC, X = specified unit 1 mm

WSC + X + ℓ₁ × 2 < L
WSC = 0 or WSC ≥ 1
X = 0 or X ≥ 1

The positions of the two wrench slots are not on the same plane.

D	W	ℓ₁
8	7	8
10	8	8
12	10	10
13	11
15	13
16	14
18	16

D	W	ℓ₁
20	17	10
25	22	10
30	27	15
35	30	15
40	36	20
50	41	20

Add flat machining at 1 location
Specify method FC10-E8
FC, E = specified unit 1 mm

D ≤ 30: FC ≤ 5 × D, D ≥ 35: FC ≥ 3 × D

When 1.5 × D<FC, FC ≤ L/2

E=0 or E ≥ 2

Cannot be used together with WFC

D	h
8 to 16	1
20 to 40	2
50	3

WFC

Additional machining on 2 surfaces
Specified method WFC8-A8-E4
WFC, A, E = specified unit 1 mm

D ≤ 30: WFC ≤ 5 × D, D ≥ 35: WFC ≥ 3 × D

When 1.5 × D < WFC, 2WFC ≤ L/2

A(E)=0 or A(E) ≥ 2

Cannot be machined on the same surface, cannot be used together with FC

D	h
8 to 16	1
20 to 40	2
50	3

Alterations

Code

Spec.

Add one 90-degree flat machining
Specification method RC10
Applicable conditions Applicable for D=10 to 30

Cannot be used together with WRC

WRC

Additional machining of two 90-degree flat surfaces
Specification method WRC10-Y10
Applicable conditions Applicable for D=10 to 30

Cannot be used together with RC

Cannot be machined on the same surface

LFC

Step Surface Machining
Specified Method LFC10-A0

LFC ≤ F

D-M(N) ≥ 1

P	H
6 to 18	1
20 to 40	2
41 or more	2

MD
ND

Change the effective length of the internal thread section to M(N) × 3.
Specification Method MD6/ND6 (change M to MD, N to ND)
Applicable Conditions D = 12 to 30, and M(N) = 6 to 20

Internal thread on one end: MD × 3.5 + 4 ≤ L

Internal threads on both ends: MD × 3.5 + 4 + ND × 3.5 + 4 ≤ L

When multiple alterations are selected, the machining parts need to be spaced by more than 2 mm.

Additional processing may result in reduced hardness. Refer to

P.36

Specification Table

Part Number		Can be specified down to 1 mm increments				M (Coarse Thread) Selection										N (Coarse Thread) Select									(Y) Max.
Type	D	L		F	P																				(Y) Max.
Type	D	Standard	Precision	F	P																				Standard
One end stepped, both ends tapped type (D Tolerance g7) E-SFAA E-SSFAA E-PSFAA E-PSSFAA (D Tolerance f8) E-PSFGA E-SFNA E-SSFNA E-PSFNA E-PSSFNA (D Tolerance f8) E-PSNGA	8	25 to 998	25-298	2 ≤ F ≤ P × 4	6	3										3	4	5							800
	10	25 to 998	25 to 348		6 to 8	3	4	5								3	4	5	6						800
	12	25 to 1198	25 to 348		6 to 10	3	4	5	6								4	5	6	8					1000
	13	25 to 1198	25 to 348		6 to 11	3	4	5	6	8							4	5	6	8					1000
	15	25 to 1198	25 to 348		6 to 13	3	4	5	6	8	10						4	5	6	8	10				1000
	16	25 to 1198	25 to 348		6 to 14	3	4	5	6	8	10						4	5	6	8	10				1200
	20	25 to 1198	25 to 448		8 to 17		4	5	6	8	10	12					4	5	6	8	10	12			1200
	25	25 to 1198	25 to 448		8 to 22		4	5	6	8	10	12	16				4	5	6	8	10	12	16		1200
	30	25 to 1498	25 to 448		9 to 27			5	6	8	10	12	16	20	24				6	8	10	12	16	20	1500

P size must satisfy M+3 ≤ P.

When D-P ≤ 4 for the standard type, the chamfer C of the stepped section is 0.2 or less.

For the type with a step on one end and an internal thread on the other, the L size must satisfy N × 3 ≤ L.

When M × 2.5+4+N × 2.5+4 ≥ (Y) for the standard type, the thread bottom hole may penetrate through. When M × 2+N × 2 ≥ (Y), the effective length of the larger diameter threaded hole takes precedence. At this time, Y must satisfy Y ≥ M × 2.5 + 4 + N or Y ≥ N × 2.5 + 4 + M.

Product Features

Feature 1: Has high-precision dimensional tolerances and is widely used in various precision equipment.
Feature 2: Uses bearing steel (S45C or GCr15) with excellent wear resistance and SUS440C or equivalent high-hardness corrosion-resistant steel, which are high-frequency quenched to enhance wear resistance while maintaining original toughness.
Feature 3: Various additional processing options are available to meet different usage environments.
Feature 4: Usually used in combination with linear bushing products, it provides excellent linear guidance. Compared to general shaft and bushing structures, even during high-speed reciprocating motion, there is minimal wear.
Feature 5: Optional hard chrome plating provides excellent rust resistance, and the coating hardness reaches HV750. It will not be easily worn when used with high-hardness workpieces.

Precautions

(2) Decreased hardness in the machined area
After quenching the base material, machining may cause some areas to lose hardness due to annealing:
- All external threads
-All steps
-Internal threads: When M ≥ D/2, double-hole internal thread type, hard chrome plated products made of SUS440C or equivalent high-hardness corrosion-resistant steel
-Additional processing for wrench slot (SC-WSC-SX)
-Additional processing for flat surface (FC-WFC)
-Additional processing for V-groove (VC-WVC)
-Except for full-length hardened type.

Only the shaded area of section D is hard chrome plated.
Guide Shaft with Stepped Ends and Internal Thread | Stepped End Bushings | MISUMI Quality | Imported Japanese Stainless Steel Material

Guide Shaft with Stepped Ends and Internal Thread | Stepped End Bushings | MISUMI Quality | Imported Japanese Stainless Steel Material

(3) Coating for Surface Treatment
After surface treatment of the base material, processing is performed. The following areas are not plated:
- Grooved section
-External thread section
-Internal thread section
-Wrench slot, V-groove, flat surface, cut surface
-The inside of the pipe-type guide shaft may rust if hard chrome plating is not applied.

Example of Use

Standard Linear Motion Mechanism	Functions of Standard Linear Motion Mechanisms (1) Using two guide shafts in parallel effectively prevents workpiece rotation (2) Improves the accuracy and load capacity of linear motion. (3) High-speed reciprocating motion can be achieved through the combination of guide shafts and linear bushings. (4) Lower running resistance, resulting in less wear on the corresponding workpiece.
Sample Image


Actual Product Image	Function of Key Components in the Mechanism Linear Guide Shaft: Supports components and, when used with linear bushings, provides guiding functionality. Click for details Linear guide shaft Linear Bushings: Uses a ball circulation structure to move the workpiece along the guide shaft. For details, click Linear Bushing Guide Shaft Support: Supports and secures the guide shaft, effectively adjusts shaft spacing, and enhances equipment stability. For details, click Guide Shaft Support Stopper: Serves as a limit, used to adjust the effective stroke of the mechanism For more details, click Stopper

Application Industries

Medical	Semiconductor	Electronic & Electrical Appliances

Smart phone	Food	Automotive

Linear Bushing Standard type Straight type	Bearing housing set T-type	Shaft Collar Slit

Typical model: LMU6	Typical model: BGHFS6000ZZ-30	Typical model: PSCS10-10
Advantages: High quality, low price, short delivery time	Advantages: full range, high precision and high quality	Advantages: full range of matching shaft products

Linear Shafts One End Stepped, Both Ends Tapped/One End Tapped

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Product Description

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Service hours

Noted for use