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Machine Keys
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Material
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Hole Machining
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Counterbored Hole -
Counterbored + Tapped -
Center Tapped -
Center Tapped + Counterbored
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Cleaning Method
- Degreasing
- Precision Cleaning
- Electrolytic Polishing + Precision Cleaning
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You can add up to 6 items per a category to the compare list.
Until 31/03/2025
Until 31/03/2025MISUMI
[Features]·Both fixed dimension selection and custom dimension types are available.From: ฿ 100.10 Special Price Days to Ship: 
Same day
Same day
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You can add up to 6 items per a category to the compare list.
Until 31/03/2025
Until 31/03/2025SEIKI Machine Key, Free Length Series (JIS B 1301)
SEIKI
Choose from over 8,000 length variations. For sizes not included in the standard series, click here. Key lengths can be specified in units of 1 mm, and can be prepared to your preferred size.From: ฿ 122.92 Special Price Days to Ship:
Same day
Same day
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You can add up to 6 items per a category to the compare list.
Until 31/03/2025
Until 31/03/2025HIMENO PRECISION
A machine key used to join parts such as gears and pulleys to a rotating axis so that they rotate together.
[Applications]
· Optimal for holding adjoined parts in place, such as shafts, gears and sprockets in motors and reduction drives.From: ฿ 163.24 Special Price Days to Ship:
Same day
Same day
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You can add up to 6 items per a category to the compare list.
Until 31/03/2025
Until 31/03/2025HIMENO PRECISION
A machine key used to join parts such as gears and pulleys to a rotating axis so that they rotate together.
[Applications]
· Optimal for holding adjoined parts in place, such as shafts, gears and sprockets in motors and reduction drives.From: ฿ 96.72 Special Price Days to Ship:
Same day
Same day
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You can add up to 6 items per a category to the compare list.
Until 31/03/2025
Until 31/03/2025HIMENO PRECISION
A machine key used to join parts such as gears and pulleys to a rotating axis so that they rotate together.
[Applications]
· Optimal for holding adjoined parts in place, such as shafts, gears and sprockets in motors and reduction drives.From: ฿ 167.23 Special Price Days to Ship:
Same day
Same day
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You can add up to 6 items per a category to the compare list.
Until 31/03/2025
Until 31/03/2025KANA Standard Machine Key, Carbon Steel for Machinery, New JIS B1301 (h9)
KATAYAMA CHAIN
[Features]
· KANA Standard machine key is made from high-precision cold-drawn materials, ensuring stable accuracy at all times.
· Will deliver orders as small as a single unit.
· Please use as a set with KANA FB products or semi-F series.From: ฿ 98.43 Special Price Days to Ship:
Same day
Same day
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You can add up to 6 items per a category to the compare list.
Until 31/03/2025
Until 31/03/2025Parallel key both round type (S45C)【5-10 Pieces Per Package】
TRUSCO
Features
· Double round end machine keys are simple and fast to use.
Application
· Holds adjoined parts in place such as shafts, gears and sprockets in motors and speed reducers.From: ฿ 161.00 Special Price Days to Ship:
Same day
Same day
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You can add up to 6 items per a category to the compare list.
Until 31/03/2025
Until 31/03/2025Both Ends Round【1-50 Pieces Per Package】
NANKAI INDUSTRY
[Features]
·It can be used immediately without the need for double-round, single-round, or double-sided processing.
·Standardized and packed in one dimension.
·The length dimension is negative, so it can be easily inserted into the keyway.
·The material is S45C, and the tolerance is new JIS.From: ฿ 64.26 Special Price Days to Ship:
Same day
Same day
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You can add up to 6 items per a category to the compare list.
Until 31/03/2025
Until 31/03/2025OHKITA
[All items Can Be Sold in Single Units.]
· Keyway machining can be done easily by a milling cutter.
Material = S45CFrom: ฿ 55.53 Special Price Days to Ship:
Same day
Same day
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You can add up to 6 items per a category to the compare list.
Until 31/12/2024
Until 31/12/2024Plain (Feather) Keys【10 Pieces Per Package】
RS Pro
Individual keysMade from C.45-R Steel with 600N/mm shear strengthTo DIN 6885From: ฿ 207.17 Special Price Days to Ship:
8 Day(s)
8 Day(s)
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You can add up to 6 items per a category to the compare list.
Until 31/03/2025
Until 31/03/2025Double Square-ended Machine Key EA968ZD-9
ESCO
【Product Specifications】
・Material-steel
・Length-300mmm
・You can it depending on your usage and machine both ends.
・Full polished both width and height.
・Width…14
・Thickness…9From: ฿ 458.33 Special Price Days to Ship:
Same day
Same day
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You can add up to 6 items per a category to the compare list.
Until 31/03/2025
Until 31/03/2025Double Square-ended Machine Key EA968ZD-2
ESCO
【Product Specifications】
・Material-steel
・Length-300mmm
・You can it depending on your usage and machine both ends.
・Full polished both width and height.
・Width…4
・Thickness…4From: ฿ 166.67 Special Price Days to Ship:
Same day
Same day
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You can add up to 6 items per a category to the compare list.
![Double Square-ended Machine Key [Stainless Steel] EA968ZE-15](//th.misumi-ec.com/en/linked/material/mech/ESC1/PHOTO/221005834207.jpg?$product_view_b$)
Until 31/03/2025
Until 31/03/2025Double Square-ended Machine Key [Stainless Steel] EA968ZE-15
ESCO
【Product Specifications】
・Material-SUS304
・Length-300mm
・Width…15
・Thickness…10From: ฿ 2,546.67 Special Price Days to Ship:
Same day
Same day
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You can add up to 6 items per a category to the compare list.
![Double Square-ended Machine Key [Stainless Steel] EA968ZE-22](//th.misumi-ec.com/en/linked/material/mech/ESC1/PHOTO/221005834241.jpg?$product_view_b$)
Until 31/03/2025
Until 31/03/2025Double Square-ended Machine Key [Stainless Steel] EA968ZE-22
ESCO
【Product Specifications】
・Material-SUS304
・Length-300mm
・Width…22
・Thickness…14From: ฿ 7,523.33 Special Price Days to Ship:
Same day
Same day
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You can add up to 6 items per a category to the compare list.
Until 31/12/2024
Until 31/12/2024RS Pro
Maintenance kitMade from C.45-R Steel with 600N/mm shear strengthTo DIN 6885From: ฿ 5,212.78 Special Price Days to Ship:
8 Day(s)
8 Day(s)
![Double Square-ended Machine Key [Stainless Steel] EA968ZE-15](http://th.misumi-ec.com/en/linked/material/mech/ESC1/PHOTO/221005834207.jpg?$product_view_b$)
![Double Square-ended Machine Key [Stainless Steel] EA968ZE-22](http://th.misumi-ec.com/en/linked/material/mech/ESC1/PHOTO/221005834241.jpg?$product_view_b$)
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| Hole Machining |
| Cleaning Method |
You can add up to 6 items per a category to the compare list.  Until 31/03/2025 | You can add up to 6 items per a category to the compare list.  Until 31/03/2025 | You can add up to 6 items per a category to the compare list.  Until 31/03/2025   | You can add up to 6 items per a category to the compare list.  Until 31/03/2025   | You can add up to 6 items per a category to the compare list.  Until 31/03/2025 | You can add up to 6 items per a category to the compare list.  Until 31/03/2025 | You can add up to 6 items per a category to the compare list.  Until 31/03/2025   | You can add up to 6 items per a category to the compare list.  Until 31/03/2025 | You can add up to 6 items per a category to the compare list.  Until 31/03/2025 | You can add up to 6 items per a category to the compare list.  Until 31/12/2024 | You can add up to 6 items per a category to the compare list.  Until 31/03/2025 | You can add up to 6 items per a category to the compare list.  Until 31/03/2025 | You can add up to 6 items per a category to the compare list. ![Double Square-ended Machine Key [Stainless Steel] EA968ZE-15](http://th.misumi-ec.com/en/linked/material/mech/ESC1/PHOTO/221005834207.jpg?$product_view_c$) Until 31/03/2025 | You can add up to 6 items per a category to the compare list. ![Double Square-ended Machine Key [Stainless Steel] EA968ZE-22](http://th.misumi-ec.com/en/linked/material/mech/ESC1/PHOTO/221005834241.jpg?$product_view_c$) Until 31/03/2025 | You can add up to 6 items per a category to the compare list.  Until 31/12/2024 | |
| Brand | MISUMI | SEIKI | HIMENO PRECISION | HIMENO PRECISION | HIMENO PRECISION | KATAYAMA CHAIN | TRUSCO | NANKAI INDUSTRY | OHKITA | RS Pro | ESCO | ESCO | ESCO | ESCO | RS Pro |
| Product Series | KANA Standard Machine Key, Carbon Steel for Machinery, New JIS B1301 (h9) | Parallel key both round type (S45C)【5-10 Pieces Per Package】 | Double Square-ended Machine Key [Stainless Steel] EA968ZE-15 | Double Square-ended Machine Key [Stainless Steel] EA968ZE-22 | |||||||||||
| CAD |
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| From | ฿ 100.10 Special Price On Sale Until 31/03/2025 | ฿ 122.92 Special Price On Sale Until 31/03/2025 | ฿ 163.24 Special Price On Sale Until 31/03/2025 | ฿ 96.72 Special Price On Sale Until 31/03/2025 | ฿ 167.23 Special Price On Sale Until 31/03/2025 | ฿ 98.43 Special Price On Sale Until 31/03/2025 | ฿ 161.00 Special Price On Sale Until 31/03/2025 | ฿ 64.26 Special Price On Sale Until 31/03/2025 | ฿ 55.53 Special Price On Sale Until 31/03/2025 | ฿ 207.17 Special Price On Sale Until 31/12/2024 | ฿ 458.33 Special Price On Sale Until 31/03/2025 | ฿ 166.67 Special Price On Sale Until 31/03/2025 | ฿ 2,546.67 Special Price On Sale Until 31/03/2025 | ฿ 7,523.33 Special Price On Sale Until 31/03/2025 | ฿ 5,212.78 Special Price On Sale Until 31/12/2024 |
| Days to Ship | Same day | Same day | Same day | Same day | Same day | Same day | Same day | Same day | Same day | 8 Day(s) | Same day | Same day | Same day | Same day | 8 Day(s) |
| Shape | Parallel Keys (Straight) / Parallel Keys (Round at One End) / Parallel Keys (Round at Both Ends) | Parallel Keys (Round at One End) / Parallel Keys (Round at Both Ends) | Parallel Keys (Round at One End) | Parallel Keys (Round at Both Ends) | Parallel Keys (Straight) | Parallel Keys (Round at Both Ends) | Parallel Keys (Round at Both Ends) | Parallel Keys (Round at Both Ends) | Woodruff Keys | - | - | - | - | - | - |
| Environmentally friendly | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Width(mm) | 2 ～ 18 | 3 ～ 7 | 4 | 6 ～ 8 | 16 | 5 | 3 ～ 12 | 8 | 3 ～ 5 | - | - | - | - | - | - |
| Characteristics/Applications | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Overall Length(mm) | 6 ～ 100 | 7 ～ 80 | 25 | 45 | 55 | 25 ～ 30 | 8 ～ 80 | 22 ～ 55 | - | - | - | - | - | - | - |
| Material | Steel / Stainless Steel | Steel / Stainless Steel | Stainless Steel | Steel / Stainless Steel | Steel | Steel | Steel | Steel | Steel | - | - | - | - | - | - |
| Hole Machining | Straight | Straight | Straight | Straight | Straight | Straight | Straight | Straight | Straight | - | - | - | - | - | - |
| Cleaning Method | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
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Application example related to this category
Related Categories to Machine Keys
FAQ Machine Keys
- Question: What are machine keys and their primary functions?
- Answer: Machine keys, also known as shaft keys, are mechanical components used to connect rotating machine elements such as gears, pulleys, and couplings to a shaft. Their primary function is to transmit torque from the shaft to the connected element and ensure synchronous rotation. They also provide a fail-safe mechanism to protect the machinery by shearing off during overload conditions, thus preventing damage to other components.
- Question: What types of machine keys are available?
- Answer: There are several types of machine keys, each suited for different applications:
1. Parallel Keys: Rectangular keys with either square or rounded ends. They are the most common type and used for general purposes.
2. Woodruff Keys: Semi-circular keys with a flat or radius bottom, used mainly for small-diameter shafts and applications requiring a tighter fit.
3. Taper Keys: Tapered keys that provide a locking effect by wedging into the keyway.
4. Gib Head Keys: Tapered keys with a head for easier removal and adjustment. - Question: How do I choose the right machine key for my application?
- Answer: To choose the correct machine key, consider the following factors:
1. Shaft and Keyway Size: Ensure the key fits snugly into the keyway of both the shaft and the rotating element.
2. Material: Common materials include carbon steel (S45C) and stainless steel (SS304). Choose the material based on the environment and load conditions.
3. Type of Key: Depending on the specific requirements of your application (e.g., load type, frequency of removal, and adjustment), select the appropriate key type.
4. Standards Compliance: Ensure the key conforms to relevant standards (e.g., DIN, JIS). - Question: What materials are machine keys typically made from?
- Answer: Machine keys are usually made from durable materials such as S45C carbon steel and SS304 stainless steel. These materials offer good wear resistance and strength, suitable for various mechanical applications. In some cases, keys may also be made from brass or silicon bronze for specific requirements.
- Question: How are machine keys installed?
- Answer: Machine keys are installed by fitting them into the keyway of a shaft and the corresponding keyway of the rotating element. For precise installation:
1. Clean the Keyway: Ensure the keyway is clean and free from debris.
2. Fit the Key: Insert the key into the shaft’s keyway.
3. Align the Element: Slide the rotating element (gear, pulley, etc.) onto the shaft, aligning its keyway with the key.
4. Secure the Assembly: Tighten any set screws or locking mechanisms to secure the assembly. - Question: What are the common sizes and dimensions of machine keys?
- Answer: Machine keys come in various sizes and dimensions to fit different shaft diameters and keyway sizes. They are typically specified by width, height, and length. For example:
• Widths range from 2mm to 50mm or more.
• Lengths range from 5mm to over 300mm.
• Heights correspond to the width to ensure a proper fit in standard keyways. - Question: Can machine keys be custom-made?
- Answer: Yes, machine keys can be custom-made to specific dimensions and requirements. Manufacturers can produce custom keys based on the specifications provided, including material, size, and any special features like counterbores or tapped holes.
- Question: What are Woodruff keys, and where are they used?
- Answer: Woodruff keys are semi-circular keys used in applications requiring a tight fit and resistance to rotational movement. They are commonly used in automotive and small machinery applications where precise alignment is crucial.
- Question: Are there specific standards for machine keys?
- Answer: Yes, machine keys are manufactured to conform to various international standards, such as:
• DIN 6885: German standard for parallel keys.
• JIS B1301: Japanese standard for machine keys.
• ANSI: American standards for key sizes and dimensions.
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