Linear Shaft One End Tapered, One End Stepped, Tapped/ Threaded
Brand :
MISUMI
Caution
- Some Page Materials (external link and other) 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
Note: When B=0 or S=0, it means there is no thread.
Specification Overview
| Type |  Material |  Hardness |  Surface Treatment | D(mm) | L(mm) |
| D tolerance g7 | |||||
| E-SFTF | S45C or GCr15 | High-frequency quenching For effective hardened layer depth, please click  Surface Hardness StandardS45C or GCr15 55HRC~ SUS440C or equivalent high-hardness corrosion-resistant steel 53HRC or more | - | 6 to 20 | 25 to 500 |
| E-SSFTF | SUS440C or equivalent high-hardness corrosion-resistant steel | ||||
| E-PSFTF | S45C or GCr15 | Hard Chrome Plating Coating Hardness HV750~ Coating Thickness 5µ or more~ | |||
| E-PSSFTF | SUS440C or equivalent high-hardness corrosion-resistant steel |
| Type | Material | Hardness | Surface Treatment | D(mm) | L(mm) |
| D tolerance g7 | |||||
| E-SFTG | S45C or GCr15 | High-frequency quenching For effective hardened layer depth, please click Surface Hardness StandardS45C or GCr15 55HRC~ SUS440C or equivalent high-hardness corrosion-resistant steel 53HRC or more | - | 8 to 20 | 25 to 498 |
| E-SSFTG | SUS440C or equivalent high-hardness corrosion-resistant steel | ||||
| E-PSFTG | S45C or GCr15 | Hard Chrome Plating Coating Hardness HV750~ Coating Thickness 5µ or more~ | |||
| E-PSSFTG | SUS440C or equivalent high-hardness corrosion-resistant steel |
| Type | Material | Hardness | Surface Treatment | D(mm) | L(mm) |
| D tolerance g7 | |||||
| E-SFTN | S45C or GCr15 | High-frequency quenching For effective hardened layer depth, please click Surface Hardness StandardS45C or GCr15 55HRC~ SUS440C or equivalent high-hardness corrosion-resistant steel 53HRC or more | - | 6 to 20 | 25 to 498 |
| E-SSFTN | SUS440C or equivalent high-hardness corrosion-resistant steel | ||||
| E-PSFTN | S45C or GCr15 | Hard Chrome Plating Coating Hardness HV750~ Coating Thickness 5µ or more~ | |||
| E-PSSFTN | SUS440C or equivalent high-hardness corrosion-resistant steel |
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.Alterations
| Alterations | Code | Spec. |
 | LKC | Change L tolerance. Specification Method LKC L<200 L±0.03 200 ≤ L<500 L+0.05 L=500 L±0.1 When using LKC, L dimension can be specified in units of 0.1 mm  Not applicable when D=PNot applicable for type with internal thread on one end and external thread on the other end. |
 | AC | Change the front taper angle. Specified Method AC5 Specified Angles: 5° 10° 20° 25° 30° D-Jtan (AC°) × 2 ≥ 2 L-J ≥ 20 must be satisfied. |
Specification Table
■ One End Tapered · One End Female Thread Type
L must satisfy L-J ≥ 20.
Outer diameter 6 is only applicable to E-SSFTF, E-PSSFTF
■ One End Tapered · One End Stepped Internal Thread Type
P size must satisfy M+3 ≤ P.
L must satisfy L-J ≥ 20.
■ One end tapered, one end external thread type
When D = P, please specify the B dimension as F = B. However, since L size and F size are prioritized for processing, the B size of the product becomes F - (pitch × 2).
When B = 0 is specified, thread processing will not be performed.
L must satisfy L-J ≥ 20.
B must be greater than or equal to Pitch × 3.
Outer diameter 6 is only applicable to E-SSFTN, E-PSSFTN
| Part Number | Can be specified down to 1 mm increments | M (Coarse Thread) Selection | ||||||||
| Type | D | L | J | |||||||
| E-SFTF E-SSFTF E-PSFTF E-PSSFTF | 6 | 25 to 200 | 5 to 7 | 3 | ||||||
| 8 | 25 to 200 | 5 to 10 | 3 | 4 | 5 | |||||
| 10 | 30 to 200 | 5 to 14 | 3 | 4 | 5 | 6 | ||||
| 12 | 40 to 300 | 5 to 18 | 4 | 5 | 6 | 8 | ||||
| 13 | 40 to 300 | 5 to 20 | 4 | 5 | 6 | 8 | ||||
| 15 | 50 to 300 | 10 to 24 | 4 | 5 | 6 | 8 | ||||
| 16 | 50 to 500 | 10 to 25 | 4 | 5 | 6 | 8 | 10 | |||
| 20 | 60 to 500 | 10 to 32 | 4 | 5 | 6 | 8 | 10 | 12 | ||
L must satisfy L-J ≥ 20.Outer diameter 6 is only applicable to E-SSFTF, E-PSSFTF■ One End Tapered · One End Stepped Internal Thread Type
| Part Number | Can be specified down to 1 mm increments | M (Coarse Thread) Selection | ||||||||||
| Type | D | L | F | P | J | |||||||
| E-SFTG E-SSFTG E-PSFTG E-PSSFTG | 8 | 25 to 198 | 2 ≤ F ≤ P × 4 | 6 | 5 to 10 | 3 | ||||||
| 10 | 30 to 198 | 6 to 8 | 5 to 14 | 3 | 4 | 5 | ||||||
| 12 | 40-298 | 6 to 10 | 5 to 18 | 3 | 4 | 5 | 6 | |||||
| 13 | 40-298 | 6 to 11 | 5 to 20 | 3 | 4 | 5 | 6 | 8 | ||||
| 15 | 50-298 | 6 to 13 | 10 to 24 | 3 | 4 | 5 | 6 | 8 | 10 | |||
| 16 | 50-498 | 6 to 14 | 10 to 25 | 3 | 4 | 5 | 6 | 8 | 10 | |||
| 20 | 60-498 | 8 to 17 | 10 to 32 | 4 | 5 | 6 | 8 | 10 | 12 | |||
P size must satisfy M+3 ≤ P.L must satisfy L-J ≥ 20.■ One end tapered, one end external thread type
| Part Number | Can be specified down to 1 mm increments | P Selection | Can be specified down to 1 mm increments | |||||||||||
| Type | D | L | F | B | J | |||||||||
| E-SFTN E-SSFTN E-PSFTN E-PSSFTN | 6 | 25 to 198 | 2 ≤ F ≤ P × 5 | B ≤ F-2 (When P ≤ 6) B ≤ F-3 (When P = 8·10) B ≤ F-5 (When P ≥ 12) B = 0 (When there is no thread) | 3 | 4 | 5 | 6 | 5 to 7 | |||||
| 8 | 25 to 198 | 3 | 4 | 5 | 6 | 8 | 5 to 10 | |||||||
| 10 | 30 to 198 | 4 | 5 | 6 | 8 | 10 | 5 to 14 | |||||||
| 12 | 40-298 | 5 | 6 | 8 | 10 | 12 | 5 to 18 | |||||||
| 13 | 40-298 | 5 | 6 | 8 | 10 | 12 | 5 to 20 | |||||||
| 15 | 50-298 | 5 | 6 | 8 | 10 | 12 | 10 to 24 | |||||||
| 16 | 50-498 | 5 | 6 | 8 | 10 | 12 | 16 | 10 to 25 | ||||||
| 20 | 60-498 | 5 | 6 | 8 | 10 | 12 | 16 | 20 | 10 to 32 | |||||
When D = P, please specify the B dimension as F = B. However, since L size and F size are prioritized for processing, the B size of the product becomes F - (pitch × 2).When B = 0 is specified, thread processing will not be performed.L must satisfy L-J ≥ 20.B must be greater than or equal to Pitch × 3.Outer diameter 6 is only applicable to E-SSFTN, E-PSSFTN| D tolerance | |
| D | g7 |
| 6 | -0.004 -0.016 |
| 8 | -0.005 -0.020 |
| 10 | |
| 12 | -0.006 -0.024 |
| 13 | |
| 15 | |
| 16 | |
| 18 | |
| 20 | -0.007 -0.028 |
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.
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. | (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
Application Industries
Related Products
| Linear bushings 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 |
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