Linear Shafts One End Tapped with Wrench Flats

MISUMI

**RoHS Compliant is available for some part numbers.
Please contact with MISUMI for detail effective date.

RoHS Compliant 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 Tapped Rotary Shaft Hollow Shaft Chrome Plated Bar

Material Specification

Type		Material	Hardness	Surface Treatment
With Wrench Slot Type
Standard
D tolerance g7	D tolerance f8
E-SFJC	-	S45C or GCr15	High-frequency quenching For effective hardened layer depth, please click Surface Hardness Standard S45C or GCr15 55HRC~ SUS440C or high-hardness corrosion-resistant steel 53HRC or more	-
E-SSFJC	-	SUS440C or high-hardness corrosion-resistant steel
E-PSFJC	-	S45C or GCr15		Hard Chrome Plating Plating Hardness HV750~ Plating Thickness 3µ or more
E-PSSFJC	-	SUS440C or high-hardness corrosion-resistant steel
-	E-PSFGC	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. Please click

Rust Prevention Methods

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

Specification Overview

D Tolerance	Equivalent Material	Hardness		Surface Treatment	D (mm)	L (mm)
g7	GB：S45C Equivalent JIS：S45C	55HRC～	High Frequency Quenched For effective hardening layer depth, click Surface Hardness Benchmark	Hard Chrome Plated Plating hardness: HV750～ Plating thickness: 3μ or more	6~30	20~1500

The hardness of shaft end machined part (effective thread length + approx. 10mm) may be reduced due to the annealing effect of machining.

If there are requirements for rust prevention, please give priority to the hard-chrome plated products. Click

Rust Prevention Method

For combination with linear bushing, please select high-frequency quenched products.

Alterations

Code

Spec.

MISUMI Guide Shaft with Internal Thread on One End, Wrench Slot Type, Through Hole Type Product Introduction

LKC

Change L dimension tolerance
Specification Method LKC
Applicable Conditions The maximum L dimension for precision type is 200
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 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
6 to 18	1
20 to 40	2
50	3

WFC

Additional machining on 2 surfaces
Specified method WFC8-A8-E2
Applicable conditions

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

WFC ≤ 3 × D

When 1.5 × D < WFC, 2WFC ≤ L/2

A(E) = 0 or A(E) ≥ 2

The two machined surfaces are not guaranteed to be on the same horizontal plane and cannot be used together with FC

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

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

The two machined planes are not guaranteed to be on the same level

D	W	ℓ₁
6	5	8
8	7
10	8
12	10	10
13	11
15	13
16	14

D	W	ℓ₁
18	16	10
20	17
25	22
30	27	15
35	30	15
40	36	20
50	41	20

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

Additional processing may result in reduced hardness.

Precision Reference

■ Tolerance of Section D

D	g7	f8
6	-0.004 -0.016	-0.010 -0.028
8	-0.005 -0.020	-0.013 -0.035
10
12	-0.006 -0.024	-0.016 -0.043
13
15
16
20	-0.007 -0.028	-0.020 -0.053
25
30
35	-0.009 -0.034	-0.025 -0.064
40
50

■ Tolerance of L size (Y size)

Dimensions (Greater Than)	Dimensions (To)	Shaft tolerance g7
2	6	±0.1
6	30	±0.2
30	120	±0.3
120	400	±0.5
400	1000	±0.8
1000	1500	±1.2

Specification Table

■ Dimension Specification

Shaft Dia. D (φ)	Tolerance g7	Length L 1mm increments	Nominal Thread M (Coarse Thread)									Wrench slot size			C
Shaft Dia. D (φ)	Tolerance g7	Length L 1mm increments	Nominal Thread M (Coarse Thread)									SC	W	ℓ₁	C
6	-0.004 -0.016	20～ 600	3									SC ＝ 1mm increments SC+ℓ1 ≤L SC≥0	5	8	Below 0.5
8	-0.005 -0.020	20～ 800	3	4	5								7
10	-0.005 -0.020	20～ 800	3	4	5	6							8
12	-0.006 -0.024	20~1000		4	5	6	8						10	10
13		25~1000		4	5	6	8						11
16		30~1200		4	5	6	8	10					14
20	-0.007 -0.028	30~1200		4	5	6	8	10	12				17		Below 1.0
25		35~1200		4	5	6	8	10	12	16			22
30		35~1500				6	8	10	12	16	20		27	15

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.

Usage Method

Example of Use	Medium Precision	High Precision
	Economy series g7	g6 standard type/g6 precision type

Recommended Applications	- Medium precision application - Light load - Use in vertical direction and suitable for light load - Short sliding distance - Low frequency - Low speed - Low-price design	- High precision application (Outer diameter-Straightness-Roundness) - Heavy load - High-durability application - Use in horizontal direction and suitable for heavy load - Long sliding distance - High frequency - High speed

Precautions

MISUMI High Precision Guide Shaft: One End Internal Thread, with Wrench Slot Type, Through Hole Type Selection Catalog

(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 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: One End Internal Thread, Wrench Slot Type, Through-Hole Type Bushing, MISUMI Quality, Japanese Imported Stainless Steel Material

Guide Shaft: One End Internal Thread, Wrench Slot Type, Through-Hole Type Bushing, MISUMI Quality, Japanese Imported 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

Sample Image

MISUMI Guide Shafts One End Tapped Full Range of Selections

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.

Actual Product Image

Direct-from-Manufacturer MISUMI Guide Shafts One End Tapped Larger 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