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Keyless Bushing (Fastening Fittings)（Body Material：Stainless Steel）
An online store for keyless bushings (fastening fittings). In MISUMI's e-catalog, specifications and dimensions such as the shaft hole diameter, allowable torque, main body material, surface processing, boss diameter and delivery date can be selected in single clicks, making it easy to find the desired keyless bushing.
[What is a keyless bushing (fastening fitting)?]
A keyless bushing is a fastener that can fix shafts and hubs (gear, sprocket, pulley, etc.) without key grooving. By tightening the bolt, drag and friction force are generated in the tapered fitting part, causing it to fasten by the resultant force.
[What is a keyless bushing (fastening fitting)?]
A keyless bushing is a fastener that can fix shafts and hubs (gear, sprocket, pulley, etc.) without key grooving. By tightening the bolt, drag and friction force are generated in the tapered fitting part, causing it to fasten by the resultant force.
Configure
Specification/Dimensions
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Type
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Flanged -
Straight -
Nut Tightening -
Thin Wall -
Direct Mounting -
Sleeve -
Hydraulic
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Shaft Bore Dia. d(Ø)
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Hub Dia.(Ø)
- 8
- 9
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- 19
- 20
- 21
- 22
- 23
- 24
- 25
- 26
- 27
- 28
- 29
- 30
- 31
- 32
- 33
- 34
- 35
- 36
- 37
- 38
- 39
- 40
- 41
- 42
- 43
- 44
- 45
- 46
- 47
- 47.60
- 48
- 50
- 51
- 52
- 53
- 54
- 55
- 56
- 57
- 57.13
- 59
- 60
- 60.5
- 62
- 64
- 65
- 67
- 68
- 69.83
- 70
- 71
- 72
- 73
- 75
- 77
- 78
- 79
- 80
- 82
- 83
- 84
- 85
- 85.70
- 87
- 88
- 90
- 91
- 93
- 95
- 96
- 97
- 101
- 106
- 107.93
- 110
- 114
- 115
- 120
- 124
- 125
- 130
- 134
- 135
- 145
- 155
- 165
- 180
- 225
- 260
- 285
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Body Material
- Steel
- Stainless Steel
- Aluminum
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Allowable Torque Range(N•m)
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Centering
- Provided
- None
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Surface Treatment
- None
- Black Oxide
- Electroless Nickel Plating
- Anodize
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Tightening Structure
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Tightening Method
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Allowable Torque(N•m)
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Cleaning Method
- Degreasing
- Precision Cleaning
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Characteristics/Applications
- Clean washed
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Environmentally friendly
- RoHS Compliant (10 Substances)
Brand |
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- 12 items
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You can add up to 6 items per a category to the compare list.
Until 31/03/2025
Until 31/03/2025MechaLock - Standard (Centering Function)
MISUMI
It comes in a wide variety of sizes, materials, and surface treatments, and has a centering function.From: ฿ 2,981.16 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.
TSUBAKIMOTO CHA
A keyless bushing (fastening joint) that connects the shaft and boss without using a key.
[Features]
·Strong fastening is possible just by tightening the tightening bolt.
·A general-purpose type that is easy to install and remove.
·Key processing, spline processing, press fitting, shrink fitting, etc. are not required at all.
·A wide variety of sizes are available, and it is also compatible with large diameter shafts.
·Selectable depending on the application.
·Stainless steel, electroless nickel plating, and inch sizes are also available.
[Applications]
·Ideal for timing pulleys, cams, etc. where fine angle adjustment is required.
·Convenient for places where it is necessary to put on and take off.
·Ideal for industrial printers, machine tools, etc.From: ฿ 22,042.00 Days to Ship:
20 Day(s)
20 Day(s)
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You can add up to 6 items per a category to the compare list.
TSUBAKIMOTO CHA
A keyless bushing that connects the shaft and boss without using a key.
[Features]
·Since it is compatible with a wide range of tolerance shafts (other than KP specifications), it is possible to use standard products for plus tolerance shafts such as servo motors.
·It has a centering function.
·With a product lineup starting from small diameter shafts, it is ideal for fastening the output shafts of small stepping motors and servo motors.
·Stainless steel specifications (SS) and electroless nickel plating specifications (KP) do not require the application of oil or grease during assembly.
·Compared to the AE series, the inner/outer diameter ratio is smaller, allowing for a more compact design.
·Low surface pressure specifications that can be used for small diameter bosses are also available.
[Applications]
·Ideal for timing pulleys, cams, etc. where fine angle adjustment is required.
·It is convenient for places where detachment is required, such as when mounting directly on the motor shaft.From: ฿ 100.00 Days to Ship:
10 Day(s)
10 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 31/03/2025MechaLock - Compact (Centering Function)
MISUMI
[Features]It has a centering function and is suitable for a smaller hub.From: ฿ 2,735.46 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 31/03/2025MIKI PULLEY
[Features]
· The inner/outer diameter ratio of the sleeve is small, the diameter of the mounting parts can be reduced and the moment of inertia can be decreased.
· The mechanism is simple and can maintain high-accuracy concentricity.From: ฿ 3,675.04 Special Price Days to Ship:
11 Day(s)
11 Day(s)
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You can add up to 6 items per a category to the compare list.
TSUBAKIMOTO CHA
Choose from 2 mountings with increased mounting freedom. (Flange type, straight type). Made from austenitic stainless steel and is corrosion-resistant. The entire main body is made from stainless steel, and is optimal for operations in adverse environments of corrosive atmospheres or clean rooms. Oil coating not required when mounting. Mounting bolt is coated with special lubricants, eliminating the need for oil or grease coating.From: ฿ 8,817.00 Days to Ship:
Quote
Quote
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You can add up to 6 items per a category to the compare list.
MIKI PULLEY
Simple and high-accuracy frictional joint fitting using the principle of Pascal.
[Features]
· The coupling between the shaft and the hub is realized by a hydro method using the principle of Pascal, and the shortcomings and difficulties caused by key connection are solved at once.
· The machining tolerance between the shaft and the hub is a general fit tolerance, and no special finishing is required. Positioning in both rotational and axial directions can be performed freely.
· Furthermore, the unique bolting of 1 hydro method greatly reduces the number of work steps.
· Because the concentricity is excellent at 0.02 mm, it is ideal for places where high-accuracy is required and the frequency of attachment and detachment is high.
· Operating space is not required because the structure is tightened from the radial direction.
[Applications]
· Used in machine tools, pumps, molding machines, printing machines, palletizing robots, various jigs and tools.From: ฿ 5,089.75 Days to Ship:
10 Day(s)
10 Day(s)
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You can add up to 6 items per a category to the compare list.
Keyless Bushing A.P.LOCK SAPL-AS Series
SUNGIL
[Features]
· Self-centering function: Prevents minute Off-centering.
· Difference between internal diameter (d) and outer diameter (D) is slight, and can also be installed to small hubs with light pressure on its surface.
· Internal diameters 4.5ø to 40ø standardized.
· Has simple structure for easy assembly.
· Choose from stainless steel (vacuum environments) or electroless nickel plated products (corrosion proof) to suit the use environmentFrom: ฿ 2,342.32 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.
![[Clean & Pack]MechaLock - Compact](//content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/jp/product/series/110310858959/110310858959_001_20230911105917.jpg?$product_view_b$)
[Clean & Pack]MechaLock - Compact
MISUMI
Three types of cleaning methods are available: degreasing, precision cleaning, and electrolytic polishing + precision cleaning. They can be ordered from one piece with the standard part number.
This eliminates the need for customer cleaning or outsourced cleaning, reducing the amount of time and effort required.■Part Number for Clean & Pack Products· Degreasing (Anti-rust single packing) : Part Number SL-□□ · Precision cleaning (Degassing double packing) : Part Number SH-□□ · Electrolytic polishing + precision cleaning (Degassing double packing) : Part Number SHD-□□ Product Part Number Cleaning Method Packaging Type Effects Compared to Uncleaned Product Environment (Standard) Process SL-□□ Degreasing Anti-Rust Packing Oil removal General Environment Regular assembly process Post battery assembly process SH-□□ Precision Cleaning Degassing Double Packing Oil removal
Dust removalClean environment (Class 10 to 1,000) Battery assembly process LCD-related post assembly process In-vehicle camera assembly process SHD-□□ Electrolytic polishing + precision cleaning Degassing Double Packing Oil removal
Dust removal
Outgas reductionVacuum environment
Clean environment (Class 10 to 1,000)Pre-semiconductor process Liquid crystal deposition process Pre-OLED process ■Notes
Cleaning also removes rust prevention oil, which may make the product more susceptible to rusting than an uncleaned product.
Please be careful about the application location and storage environment.[Features]Is provided with the Centering function and is suitable for combination use with small-sized hubs.
From: ฿ 2,873.68 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.
Mechanical Lock MSA Rust-proof Standard Stainless Steel Specifications
ISEL
Centering function suppresses outer circumference and terminal surface run-out. Stainless steel specifications.From: ฿ 3,781.38 Days to Ship:
Same day
Same day
-
You can add up to 6 items per a category to the compare list.
![[Clean & Pack]MechaLock - Standard](//content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/jp/product/series/110310859229/110310859229_001_20230911105917.jpg?$product_view_b$)
[Clean & Pack]MechaLock - Standard
MISUMI
Three types of cleaning methods are available: degreasing, precision cleaning, and electrolytic polishing + precision cleaning. They can be ordered from one piece with the standard part number.
This eliminates the need for customer cleaning or outsourced cleaning, reducing the amount of time and effort required.■Part Number for Clean & Pack Products· Degreasing (Anti-rust single packing) : Part Number SL-□□ · Precision cleaning (Degassing double packing) : Part Number SH-□□ · Electrolytic polishing + precision cleaning (Degassing double packing) : Part Number SHD-□□ Product Part Number Cleaning Method Packaging Type Effects Compared to Uncleaned Product Environment (Standard) Process SL-□□ Degreasing Anti-Rust Packing Oil removal General Environment Regular assembly process Post battery assembly process SH-□□ Precision Cleaning Degassing Double Packing Oil removal
Dust removalClean environment (Class 10 to 1,000) Battery assembly process LCD-related post assembly process In-vehicle camera assembly process SHD-□□ Electrolytic polishing + precision cleaning Degassing Double Packing Oil removal
Dust removal
Outgas reductionVacuum environment
Clean environment (Class 10 to 1,000)Pre-semiconductor process Liquid crystal deposition process Pre-OLED process ■Notes
Cleaning also removes rust prevention oil, which may make the product more susceptible to rusting than an uncleaned product.
Please be careful about the application location and storage environment.From: ฿ 3,111.96 Days to Ship:
7 Day(s)
7 Day(s)
-
You can add up to 6 items per a category to the compare list.
Keyless bushing A.P.LOCK SAPL-CS Series
SUNGIL
[Features]
· Self-centering function: Prevents minute Off-centering.
· Difference between internal diameter (d) and outer diameter (D) is slight, and can also be installed to small hubs with light pressure on its surface. (Most compact design A.P. Lock)
· Suitable for short hubs.
· Internal ring mounts to the terminal face, preventing the hub from moving when connected.
· Choose from stainless steel or electroless nickel plated products to suit the use environment.From: ฿ 2,592.60 Days to Ship:
3 Day(s)
3 Day(s)
![[Clean & Pack]MechaLock - Compact](http://content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/jp/product/series/110310858959/110310858959_001_20230911105917.jpg?$product_view_b$)
![[Clean & Pack]MechaLock - Standard](http://content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/jp/product/series/110310859229/110310859229_001_20230911105917.jpg?$product_view_b$)
| Brand |
|---|
| Product Series |
| CAD |
| From |
| Days to Ship |
| Type |
| Shaft Bore Dia. d(Ø) |
| Hub Dia.(Ø) |
| Body Material |
| Allowable Torque Range(N•m) |
| Centering |
| Surface Treatment |
| Tightening Structure |
| Tightening Method |
| Allowable Torque(N•m) |
| Cleaning Method |
| Characteristics/Applications |
| Environmentally friendly |
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.  | You can add up to 6 items per a category to the compare list.  | 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.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list. ![[Clean & Pack]MechaLock - Compact](http://content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_c/v1/p/jp/product/series/110310858959/110310858959_001_20230911105917.jpg?$product_view_c$) | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list. ![[Clean & Pack]MechaLock - Standard](http://content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_c/v1/p/jp/product/series/110310859229/110310859229_001_20230911105917.jpg?$product_view_c$) | You can add up to 6 items per a category to the compare list.  | |
| Brand | MISUMI | TSUBAKIMOTO CHA | TSUBAKIMOTO CHA | MISUMI | MIKI PULLEY | TSUBAKIMOTO CHA | MIKI PULLEY | SUNGIL | MISUMI | ISEL | MISUMI | SUNGIL |
| Product Series | Mechanical Lock MSA Rust-proof Standard Stainless Steel Specifications | |||||||||||
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| From | ฿ 2,981.16 Special Price On Sale Until 31/03/2025 | ฿ 22,042.00 | ฿ 100.00 | ฿ 2,735.46 Special Price On Sale Until 31/03/2025 | ฿ 3,675.04 Special Price On Sale Until 31/03/2025 | ฿ 8,817.00 | ฿ 5,089.75 | ฿ 2,342.32 | ฿ 2,873.68 | ฿ 3,781.38 | ฿ 3,111.96 | ฿ 2,592.60 |
| Days to Ship | Same day | 20 Day(s) | 10 Day(s) | Same day | 11 Day(s) | Quote | 10 Day(s) | 8 Day(s) | 8 Day(s) | Same day | 7 Day(s) | 3 Day(s) |
| Type | Flanged | Straight | Flanged | Thin Wall | Flanged | Flanged | Hydraulic | Flanged | Thin Wall | Flanged | Flanged | Thin Wall |
| Shaft Bore Dia. d(Ø) | 5 ～ 50 | 40 ～ 80 | 8 ～ 50 | 5 ～ 50 | 6 ～ 35 | 25 | 15 ～ 60 | 5 ～ 40 | 5 ～ 50 | 8 ～ 50 | 5 ～ 50 | 5 ～ 30 |
| Hub Dia.(Ø) | 16 ～ 72 | 65 ～ 120 | 21 ～ 72 | 12 ～ 65 | 12 ～ 47 | 44 | 18 ～ 73 | 16 ～ 62 | 12 ～ 65 | 21 ～ 72 | 16 ～ 72 | 12 ～ 41 |
| Body Material | Stainless Steel | Stainless Steel | Stainless Steel | Stainless Steel | Stainless Steel | Stainless Steel | Stainless Steel | Stainless Steel | Stainless Steel | Stainless Steel | Stainless Steel | Stainless Steel |
| Allowable Torque Range(N•m) | 2.0~20.0 ～ 700.1~1000.0 | 700.1~1000.0 ～ 3000.1~10000.0 | 2.0~20.0 ～ 700.1~1000.0 | 2.0~20.0 ～ 500.1~700.0 | 2.0~20.0 ～ 500.1~700.0 | 200.1~300.0 | 20.1~50.0 ～ 3000.1~10000.0 | 2.0~20.0 ～ 300.1~500.0 | 2.0~20.0 ～ 500.1~700.0 | 20.1~50.0 ～ 700.1~1000.0 | 2.0~20.0 ～ 700.1~1000.0 | 2.0~20.0 ～ 150.1~200.0 |
| Centering | Provided | None | Provided | Provided | - | Provided | Provided | Provided | Provided | Provided | Provided | Provided |
| Surface Treatment | None | None | None | None | None | None | Black Oxide / Electroless Nickel Plating | None | None | None | None | None |
| Tightening Structure | Single Cone Type | Double Cone Type | Single Cone Type | Single Cone Type | Single Cone Type | Single Cone Type | - | Single Cone Type | Single Cone Type | Single Cone Type | Single Cone Type | Single Cone Type |
| Tightening Method | Mechanical Type (Wedge Type) | Mechanical Type (Wedge Type) | Mechanical Type (Wedge Type) | Mechanical Type (Wedge Type) | Mechanical Type (Wedge Type) | Mechanical Type (Wedge Type) | Hydraulic Type (Oil Hydraulic Type) | Mechanical Type (Wedge Type) | Mechanical Type (Wedge Type) | Mechanical Type (Wedge Type) | Mechanical Type (Wedge Type) | Mechanical Type (Wedge Type) |
| Allowable Torque(N•m) | 2.8 ～ 754.3 | 794 ～ 4610 | 14.2 ～ 836 | 3 ～ 690 | 4.7 ～ 504 | 236 | 46 ～ 3300 | 2.8 ～ 430.6 | 3 ～ 690 | 10.7 ～ 754.3 | 2.8 ～ 754.3 | 3 ～ 168 |
| Cleaning Method | - | - | - | - | - | - | - | - | Degreasing / Precision Cleaning | - | Degreasing / Precision Cleaning | - |
| Characteristics/Applications | - | - | - | - | - | - | - | - | Clean washed | - | Clean washed | - |
| Environmentally friendly | - | - | - | - | - | - | - | - | RoHS Compliant (10 Substances) | - | RoHS Compliant (10 Substances) | - |
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Related Categories to Keyless Bushing (Fastening Fittings)
FAQ Keyless Bushing (Fastening Fittings)
- Question: What is a Keyless Bushing and how does it work?
- Answer: A Keyless Bushing is a mechanical component used for fastening fittings, providing a secure connection between shafts and hubs without the need for traditional keys. It utilizes frictional forces to securely grip the shaft and hub, ensuring a backlash-free fit.
- Question: What are the benefits of using Keyless Bushings?
- Answer: Keyless Bushings offer several advantages, including simplified installation without the need for keyways, reduced maintenance time and costs, and enhanced reliability due to their secure locking mechanisms. They also provide precise and backlash-free shaft-to-hub connections.
- Question: How do I install a Keyless Bushing?
- Answer: Installing a Keyless Bushing is straightforward. Simply slide the bushing onto the shaft and tighten the locking screws to achieve a secure grip between the shaft and the hub. Detailed installation instructions can be found in the product manual.
- Question: Can Keyless Bushings be used in high-speed applications?
- Answer: Yes, Keyless Bushings are suitable for use in high-speed applications. They are engineered to provide secure and reliable shaft-to-hub connections even under high rotational speeds, ensuring smooth operation and minimal vibration.
- Question: What materials are Keyless Bushings made of?
- Answer: Keyless Bushings are typically made from high-quality materials such as stainless steel, carbon steel, or alloy steel. These materials offer excellent strength, durability, and corrosion resistance, ensuring long-term performance in various environments.
- Question: Are Keyless Bushings reusable?
- Answer: Yes, Keyless Bushings are reusable components. They can be easily removed from one application and installed in another, making them a cost-effective solution for multiple shaft-to-hub connections.
- Question: Do Keyless Bushings require lubrication?
- Answer: Keyless Bushings typically do not require lubrication for normal operation. However, applying a small amount of lubricant to the shaft before installation can help facilitate easier assembly and removal.
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