Linear Shaft Both End Threaded with Undercut, Wrench Flats

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 Tubular Guide Shaft Both Ends External Thread with Relief Groove Wrench Slot Type / Through Hole Type Product Introduction

Specification Overview

Type		Material	Hardness	Surface Treatment	D(mm)	L(mm)
With Wrench Slot Type
Standard
D tolerance g7	D tolerance f8
E-SAFU	-	S45C or GCr15	High-frequency quenching For 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 1490
E-SSAFU	-	SUS440C or equivalent high-hardness corrosion-resistant steel
E-PSAFU	-	S45C or GCr15		Hard Chrome Plating Plating Hardness HV750~ Plating Thickness 3µ or more
E-PSSAFU	-	SUS440C or equivalent high-hardness corrosion-resistant steel
-	E-PSAGU	S45C Equivalent	-	Hard Chrome Plating Plating Hardness HV750~ Plating 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.

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

Alterations

Code

Spec.

MISUMI Guide Shaft with Stepped Internal Thread on One End

LKC

Change L dimension tolerance
Specification method LKC
Applicable conditions The maximum L dimension for precision type is 200

Not applicable when D-M(N) ≤ 2
When using LKC, the L dimension can be specified in 0.1 mm increments

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

Add a second wrench slot machining
Specification method SX15
Applicable conditions Only applicable to types with wrench slots
SX = specified unit 1 mm

SC+SX+ℓ₁ × 2<L

SX ≥ 0

Cannot be machined 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
Specified Method FC10-E8
Applicable Conditions

Not applicable for precision type
FC, E = specified unit 1 mm

FC ≤ 3 × D

When 1.5 × D

E = 0 or E ≥ 2

Cannot be used together with WFC

D	h
8 to 18	1
20 to 40	2
50	3

WFC

Additional machining on 2 surfaces
Specified Method WFC8-A8-E4
Applicable Conditions

Not applicable for precision type
WFC, A, E = specified unit 1 mm

WFC ≤ 3 × D

When 1.5 × D

A(E) = 0 or A(E) ≥ 2

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

D	h
8 to 18	1
20 to 40	2
50	3

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

Not suitable for precision type

Cannot be used together with WRC

D	b1	h
10	6	0.5
12 to 20	6	1
25	10
30	12

For details, please refer to Additional Processing Overview P.107

WRC

Add machining of 2 additional 90-degree surfaces
Specification method WRC10-Y10
Applicable conditions D=10 to 30 applicable

Not applicable for precision type

Cannot be used together with RC

Cannot be machined on the same surface

MMC
MMS
NMC
NMS

Change external thread to fine thread
Specification method MMC14 (change M to MMC)
MMS14 (change M to MMSC)
NMC14 (change N to NMC)
NMS14 (change N to NMS)

D	MMC·NMC												MMS·NMS
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
25					8	10	12	15	17	20	25		10	12	14	18
30					8	10	12	15	17	20	25	30	10	12	14	18
35						10	12	15	17	20	25	30	10	12	14	18
40							12	15	17	20	25	30		12	14	18
50								15	17	20	25	30			14	18
Thread Pitch	0.35	0.5		0.75	1						1.5		1.25	1.5

Fine Thread Clearance Dimension (1)

MMC	Pitch	MC	g
NMC	Pitch	NC	g
6	0.75	4.8	2
8	1	6.4
10		8.4
12		10.4
15		13.4
17		15.4
20		18.4

Fine Thread Clearance Size (2)

MMS	Pitch	MC	g
NMS	Pitch	NC	g
10	1.25	8	3
12	1.5	9.7
14		11.7
18		15.7

For additional processing details with a summary, please refer to the Additional Processing Overview.

P.107

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

P.108

Additional processing may result in reduced hardness.

P.106

Specification Table

■ Material Table

Type		Material	Hardness	Surface Treatment
With Wrench Slot Type
Standard
D tolerance g7	D tolerance f8
E-SAFU	-	45 or GCr15	High-frequency quenching For effective hardened layer depth, please click Surface Hardness Standard 45 or GCr15 55HRC~ SUS440C or equivalent high-hardness corrosion-resistant steel 53HRC or more	-
E-SSAFU	-	SUS440C or equivalent high-hardness corrosion-resistant steel
E-PSAFU	-	45 or GCr15		Hard Chrome Plating Plating Hardness HV750~ Plating Thickness 3µ or more
E-PSSAFU	-	SUS440C or equivalent high-hardness corrosion-resistant steel
-	E-PSAGU	45	-	Hard Chrome Plating Plating Hardness HV750~ Plating 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.

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

Part Number		Can be specified down to 1 mm increments		Selection							Wrench slot size
Type	D	L	F·T	M·N (Coarse Thread)							SC	W	ℓ₁
Standard	8	25 to 790	5 ≤ F ≤ M × 3 5 ≤ T ≤ N × 3 F-(g) ≥ Pitch × 3 T-(g) ≥ Pitch × 3	6							SC = Can be specified down to 1 mm increments SC+ℓ₁ ≤ L SC ≥ 0 Wrench Slot Details >>See (PDF)	7	8
(With Wrench Slot Type) (D Tolerance g7) E-SAFU E-SSAFU E-PSAFU E-PSSAFU (D Tolerance f8) E-PSAGU	10	25 to 790		6	8							8	8
	12	25 to 990		6	8	10						10	10
	13	25 to 990		6	8	10	12					11
	15	25 to 990		6	8	10	12					13
	16	25 to 1190		6	8	10	12					14
	20	25 to 1190		6	8	10	12	16				17
	25	25 to 1190			8	10	12	16	20	24		22
	30	25 to 1490			8	10	12	16	20	24		27	15

D tolerance
D	g7	f8
8	-0.005 -0.014	-0.013 -0.035
10
12	-0.006 -0.017	-0.016 -0.043
13
15
16
18
20	-0.007 -0.020	-0.020 -0.053
25
30

Product Features

Feature 1: Has high-precision dimensional tolerances and is widely used in various precision equipment.
Feature 2: Uses bearing steel (45 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 Bushing: 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 Shaft Both End Threaded with Undercut, Wrench Flats

Caution

Product Description

Chat with MISUMI

Service hours

Noted for use