Linear Shafts Both Ends Tapped

Brand :

MISUMI

Caution

Product Description

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

Specifications Overview

Type		Material	Hardness	Surface Treatment
Standard
D tolerance g7	D tolerance f8
E-SFJW	-	S45C or GCr15	High-frequency quenching Effective hardened layer depth>>See (PDF) S45C or GCr15 55HRC~ SUS440C or high-hardness corrosion-resistant steel 53HRC or more	-
E-SSFJW	-	SUS440C or high-hardness corrosion-resistant steel		-
E-PSFJW	-	S45C or GCr15		Hard Chrome Plating Plating Hardness HV750~ Plating Thickness 3µ or more
E-PSSFJW	-	SUS440C or high-hardness corrosion-resistant steel
-	E-PSFGW	S45C Equivalent	-	Hard Chrome Plating Plating Hardness HV750~ Plating Thickness 10µ or more

The total length L must satisfy M × 2+N × 2 ≤ L. When M × 2.5+4+N × 2.5+4 ≥ L, the thread bottom hole may penetrate through.

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. For rust prevention methods, please click

here

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

Alterations

Code

Spec.

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

1 additional wrench slot machining
Specification method SC5

SC = specified unit 1 mm

SC+ℓ₁ < L

SC = 0 or SC ≥ 1
Applicable conditions D = 6 or above applicable

Cannot be used together with WSC

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

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

M Side

WSC

Add wrench slot machining at 2 locations
Specified Method WSC12-X8
Applicable Conditions Suitable for D=6 or above
WSC, X = specified unit 1 mm

WSC+X+ℓ₁ × 2<L

WSC(X) ≥ 0

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

Cannot be used together with FC or SC

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

Add flat machining at 1 location
Specified Method FC10-A8
Applicable Conditions

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

FC ≤ 3 × D

When 1.5 × D<FC, FC ≤ L/2

E=0 or A ≥ 2

Cannot be used together with WFC

D	h
4 to 5	0.5
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

A(E) = 0 or A(E) ≥ 2

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

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

WRC

Add flat machining at 2 additional 90-degree positions
Specification Method WRC10-Y10
Applicable Conditions Suitable for D=10 to 30
WRC = specified unit 1 mm

WRC+b1 ≤ L

WRC(Y) ≥ 2

Cannot be used together with RC

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

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

When multiple alteration is selected, the machining parts need to be spaced by more than 2 mm. Click

here

Additional processing may cause a decrease in hardness. Please refer to

here

Precision Reference

■D Tolerance

D Tolerance
D	g7	f8
4	-0.004 -0.016	-
5
6		-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

Part Number		L can be specified down to 1 mm increments	M (Coarse Thread) N (Coarse Thread) Selection
Type	D	Standard	M (Coarse Thread) N (Coarse Thread) Selection
Standard (D Tolerance g7) E-SFJW E-SSFJW E-PSFJW E-PSSFJW (D Tolerance f8) E-PSFGW	4	20 to 300	2
	5	20 to 400		2.6	3
	6	20 to 800			3
	8	20 to 1000			3	4	5
	10	20 to 1000			3	4	5	6
	12	20 to 1200				4	5	6	8
	13	25 to 1200				4	5	6	8
	15	25 to 1200				4	5	6	8	10
	16	30 to 1200				4	5	6	8	10
	20	30 to 1200				4	5	6	8	10	12
	25	35 to 1200				4	5	6	8	10	12	16
	30	35 to 1500						6	8	10	12	16	20
	35	35 to 1500							8	10	12	16	20	24
	40	50 to 1500								10	12	16	20	24	30
	50	65 to 1500									12	16	20	24	30

Outer diameters 35, 40, 50 are only applicable to E-PSFJW

Outer diameters 4, 5 are not applicable to E-PSFGW

Total length L requires M×2＋N×2≤L. When M×2.5＋4＋N×2.5＋4≥L, tap pilot holes may go through.

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. For anti-rust method, click

here

If there are requirements for abrasion resistance, please select high-frequency quenched products.

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 bushings 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 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
Example Image

MISUMI Guide Shafts 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 Larger Image

Functions of Key Components in the Mechanism

Guide Shaft: Supports the workpiece and, when used with linear bushings, provides a guiding function.	For details, click here
Linear Bushings: Uses a ball circulation structure to move the workpiece along the guide shaft.	For details, click here
Guide Shaft Support: Supports and secures the guide shaft, effectively adjusts shaft spacing, and enhances equipment stability.	For details, click here
Stopper: Serves as a limiter and is used to adjust the effective stroke of the mechanism	For details, click here

Application Industries

Medical	Semiconductor	Electronic & Electrical Appliances

Smart phone	Food	Automotive

Linear bushings Standard type Straight type	Shaft support Bracket type	Shaft Collar Slit

Typical model: LMU8	Typical model: STHRB8	Typical model: SCS8-10