Linear Shaftss One End Tapped with Wrench Flats
Brand :
MISUMI
Caution
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
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 StandardS45C 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 MethodsIf 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 MethodFor combination with linear bushing, please select high-frequency quenched products.Alterations
| 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±0.03200 ≤ L<500 →L±0.05 L ≥ 500 →L±0.1 | ||
 | FC | |||
 | WFC | |||
 | SX | |||
Not applicable for precision type 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
■ Tolerance of L size (Y size)
| 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 L1mm increments |  Nominal Thread M(Coarse Thread) | Wrench slot size | C | ||||||||||
 SC | W | ℓ1 | |||||||||||||
| 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 | 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 | 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.
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
 | (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. | (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
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.
(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.
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, clickLinear Bushing
Guide Shaft Support: Supports and secures the guide shaft, effectively adjusts shaft spacing, and enhances equipment stability.
For details, clickGuide Shaft Support
Stopper: Serves as a limit, used to adjust the effective stroke of the mechanism
For more details, clickStopper
Linear Guide Shaft: Supports components and, when used with linear bushings, provides guiding functionality.
Click for details
Linear guide shaftLinear bushing: Uses a ball circulation structure to move the workpiece along the guide shaft.
For details, click
Linear BushingGuide Shaft Support: Supports and secures the guide shaft, effectively adjusts shaft spacing, and enhances equipment stability.
For details, click
Guide Shaft SupportStopper: Serves as a limit, used to adjust the effective stroke of the mechanism
For more details, click
StopperApplication Industries
Related Products
| 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 |
Anti-rust performance of metal materials and surface treatment Click Anti-rust performance table
Anti-rust performance table