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Linear Shaft Straight Type (Part Numbers)

Product Overview
Linear guide shaft is a high precision shaft product, which can be used in combination with linear bushing and other bushing products. In addition to excellent abrasion resistance, it offers a variety of configurable alterations.
Dimensional Drawing
misumi Guide Shafts Introduction
Specifications Overview
Type Material Hardness Surface TreatmentD (mm)L (mm)
D Tolerance g7D Tolerance f8
E-SFJ-S45C or GCr15High Frequency Quenched
For effective hardening layer depth>>Refer to (PDF)
S45C or GCr15 55HRC~
SUS440C or high hardness corrosion resistant steel 53HRC~
-3~5010~1500
E-SSFJ-SUS440C or High hardness corrosion resistant steel
E-PSFJ-S45C or GCr15Hard Chrome Plated
Plating hardness: 750HV~
Plating thickness: 3μ or more
E-PSSFJ-SUS440C or High hardness corrosion resistant steel
-E-PSFGS45C-Hard Chrome Plated
Plating hardness: 750HV~
Plating thickness: 10μ or more
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.
O.D. 35, 40 and 50 are applicable only to E-PSFJ
O.D. 3, 4 and 5 are not applicable to E-PSFG.
Specification Table
Part NumberL 1mm increments
TypeDD Tolerance g7
(D Tolerance g7)
E-SFJ
E-SSFJ
E-PSFJ
E-PSSFJ
(D Tolerance f8)
E-PSFG
 
310~ 400
410~ 400
510~ 400
620~ 800
820~ 1000
1020~ 1000
1220~1200
1325~1200
1525~1200
1630~1200
2030~1200
2535~1200
3035~1500
3535~1500
4050~1500
5065~1500
O.D. 35, 40 and 50 are applicable only to E-PSFJ
O.D. 3, 4 and 5 are not applicable to E-PSFG.
Alterations
misumi Guide Shafts Introduction
When multiple alteration is selected, the machining parts need to be spaced by more than 2mm. Click here
Alteration may reduce hardness, refer to and click here.
Precision Standard
■D Tolerance
D Tolerance
Dg7f8
3-0.002
-0.012
-
4-0.004
-0.016
5
6-0.004
-0.016
-0.01
-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
-0.02
-0.053
25
30
35-0.009
-0.034
-0.025
-0.064
40
50

■L dimension (Y dimension) tolerance
Dimension (more than)Dimension (to)Shaft Tolerance g7
26±0.1
630±0.2
30120±0.3
120400±0.5
4001000±0.8
10001500±1.2
Product Features
Feature 1:  Extensively applied in various precision equipment thanks to high precision dimensional tolerance.
Feature 2:  Bearing steel (S45C or GCr15) with excellent wear resistance and SUS440C or high hardness corrosion resistant steel are used for high frequency quenching, maintaining the original toughness while enhancing abrasion resistance.
Feature 3:  A variety of alterations are available to accommodate different environments.
Feature 4:  Usually combined with linear bushing products, achieving excellent linear guiding functionality, and less abrasion even if subject to high-speed reciprocal motion, as compared with general shaft and bushing structure.
Feature 5:  The surface treatment of hard-chrome plating is available, achieving excellent anti-rust performance and HV750 plating hardness, as well as less abrasion when used in combination with high-hardness workpieces.
Precautions
MISUMI High Precision Straight Guide Shafts Selection Catalog①Reduced hardness of machined parts
    Machining is performed after quenching of base metal. The parts that may be reduced in hardness due to annealing are:
        -All threaded
 -All stepped
 -Tapped: when M≥D/2, tapped double-hole type, hard chrome plated products made of SUS440C or high hardness corrosion resistant steel
 -Adds wrench flats (SC-WSC-SX)
 -Adds screw flats (FC-WFC)
 -Adds V-grooves (VC-WVC)
 -Except for full length hardened type.
Only the shaded portion of D part is hard chrome plated.
Guide Shafts Bushing MISUMI Quality Stainless Steel Material Imported from Japan

 

②Plating of surface treatment
    Machining is performed after surface treatment of base metal. No electroplating treatment is applied to the following parts:
        -Groove part
 -Threaded part
 -Tapped part
 -Wrench slot, V-groove, plane, cut section
 -The inside of the tube-type guide shaft may rust without hard chrome plating.
Example of Use
Standard Linear Motion Mechanism
Example Diagram
MISUMI Guide Shafts Full Range of Selections
Functions of standard linear motion mechanism
①Side-by-side use of two guide shafts effectively prevents workpiece rotation
②Improved accuracy of linear motion and load capacity.
③The combination of guide shaft and linear bushing enables high-speed reciprocal motion.
④Low operational resistance, reducing the loss of workpiece.
Product Picture
Direct-from-Manufacturer MISUMI Guide Shafts Larger Image
Functions of key workpieces in the mechanism
Guide shaft: Supporting the workpiece, combining with linear bushing to achieve guiding functionality.
For details, click here

Linear bushing: Driving the workpiece to move on the guide shaft through the steel ball circulating structure.
For details, click here

Guide shaft support: Supporting and fixing the guide shaft for effective adjustment of shaft pitch and improved equipment stability.
For details, click here

Stopper: Performing limit action for adjustment of effective stroke of mechanism
For details, click here
Application Industries
Medical Semiconductor Electronic & Electrical
MISUMI Guide Shafts Details Introduction Direct-from-Manufacturer Hollow Shafts for Sliding MISUMI Model Dedicated Linear Hollow Shafts Bearing Steel Stainless Steel Full Range of Models
Smart Phones Food Automotive
Hollow Shafts Chrome Plated Bar Dimensional Drawing MISUMI High Frequency Quenched Shafts Selection Manufacturer LINEAR SHAFT Rigid Shafts Drawing Custom Size
Related Products
Linear Bushing Standard Type Straight Type Shaft support Bracket type Shaft Collars (Clamp)
Stainless Steel Rigid Shafts Chrome Plated Bar Machining misumi Linear Hollow Shafts Sales MISUMI Guide Shafts Introduction Linear Guide Shafts Unit Mechanism Design Selection
Representative model: LMU8 Representative model: STHRB8 Representative model: SCS8-10
Related Documents
For anti-rust performance of metal materials and surface treatment, clickhere.
 

Part Number 

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Part Number
E-PSFG6-[15-800/1]
E-PSFG8-[15-1000/1]
E-PSFG10-[15-1000/1]
E-PSFG12-[15-1200/1]
E-PSFG13-[15-1200/1]
E-PSFG15-[15-1200/1]
E-PSFG16-[30-1200/1]
E-PSFG20-[30-1200/1]
E-PSFG25-[35-1200/1]
E-PSFG30-[35-1500/1]
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to ShipRoHSMaterial Heat Treatment Surface Treatment Shaft Dia. D
(Ø)
Length L
(mm)
Shaft Fit Tolerance

-

1 Piece(s) 14 Day(s) -[Steel] S45CNot ProvidedHard Chrome Plating615 ~ 800f8

-

1 Piece(s) 14 Day(s) -[Steel] S45CNot ProvidedHard Chrome Plating815 ~ 1000f8

-

1 Piece(s) 14 Day(s) -[Steel] S45CNot ProvidedHard Chrome Plating1015 ~ 1000f8

-

1 Piece(s) 14 Day(s) -[Steel] S45CNot ProvidedHard Chrome Plating1215 ~ 1200f8

-

1 Piece(s) 14 Day(s) -[Steel] S45CNot ProvidedHard Chrome Plating1315 ~ 1200f8

-

1 Piece(s) 14 Day(s) -[Steel] S45CNot ProvidedHard Chrome Plating1515 ~ 1200f8

-

1 Piece(s) 14 Day(s) 10[Steel] S45CNot ProvidedHard Chrome Plating1630 ~ 1200f8

-

1 Piece(s) 14 Day(s) -[Steel] S45CNot ProvidedHard Chrome Plating2030 ~ 1200f8

-

1 Piece(s) 14 Day(s) -[Steel] S45CNot ProvidedHard Chrome Plating2535 ~ 1200f8

-

1 Piece(s) 14 Day(s) -[Steel] S45CNot ProvidedHard Chrome Plating3035 ~ 1500f8

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Basic Information

Basic Shape Solid End Shape (Left) No Machining End Shape (Right) No Machining
Shaft End Perpendicularity Perpendicularity (0.2)

Frequently asked question (FAQ)

Question: Why are stainless steel guide shafts rusting?
Answer: Guide shafts are made of SUS440C, which are quenched for better abrasion resistance, but the material itself is weak to corrosion. Therefore, please select hard chrome plated products for applications with higher anti-rust requirements.
Question: Why is the hardness measured on the end face center is rather low in contrast with high hardness indicated for guide shaft products in the catalog?
Answer: As the guide shaft is high-frequency quenched, a hardening layer of certain depth will form on the outer circle of the guide shaft. To ensure toughness, the material will retain original hardness at the center of the guide shaft.
Question: What are the advantages of combining guide shaft with linear bushing?
Answer: Due to rolling friction fit with the linear bushing, the guide shaft can achieve high-accuracy linear motion, causing less friction resistance to the workpiece, thus suitable for extended continuous operation.
Question: How to select models of shaft products requiring a length of 100.5mm?
Answer: The total length can be customized in 0.1mm increments with LKC alteration.
Question: Why is the end face of hard chrome plated guide shaft rusting?
Answer: The guide shaft is cut after surface treatment during material preparation. Thereafter, no surface treatment will be performed, so the cut surface is not hard-chrome plated, thus causing the end face to rust.
Question: When combined with linear bushing, some guide shafts fit closely, while others fit with clearance. Does it affect usage?
Answer: The guide shaft and linear bushing fit with each other by point-contact rolling through the steel ball circulating structure. Due to the point-contact and non-interference fit, some clearance between the shaft and the bushing is normal, which will not affect usage. The use of this structure greatly reduces frictional resistance and improves service life of the workpiece.
Question: Is the stainless steel material of MISUMI guide shafts imported?
Answer: Both the bearing steel (SUJ2) and stainless steel (SUS440C) of MISUMI guide shafts are materials imported from Japan.
Question: I hope to know about the detection method and specification accuracy of the straightness of guide shafts.
Answer: Support both ends of the guide shaft with V-shaped blocks, rotate the shaft for 1 turn at any point, and measure the amplitude of the dial meter. 1/2 of the amplitude measurement value is the straightness. Straightness varies with outer diameter and length.
Question: How much is the perpendicularity accuracy of guide shaft?
Answer: The perpendicularity of guide shaft is 0.2 for standard type and 0.03 for precision type.

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