In what applications are knuckle joints typically used?

knuckle joints are commonly utilized in mechanisms requiring controlled rotational movement. They find applications in steering systems for automobiles and aircraft, allowing for precise direction control. In industrial machinery, such as cranes and robotic arms, knuckle joints facilitate movement in specific directions, enhancing versatility. Moreover, they play a vital role in construction equipment like excavators and loaders, ensuring efficient operation. Additionally, knuckle joints feature prominently in material handling systems and medical devices, providing flexibility and controlled articulation for various functions in engineering work.

What materials are commonly used for knuckle joints?

Knuckle joints, vital for controlled rotational movement, utilize diverse materials based on specific needs. Steel, including carbon, alloy, and stainless variants, offers durability and corrosion resistance, fitting for industrial applications. Aluminum alloys balance strength and lightness, favored in aerospace and automotive sectors. Brass and bronze, prized for corrosion resistance and malleability, find use in architectural and heavy-duty contexts. Titanium's exceptional strength-to-weight ratio and corrosion resistance suit aerospace and high-performance machinery. Material selection hinges on factors like strength, weight, corrosion resistance, and environmental conditions, ensuring optimal functionality in diverse applications.

How do you maintain a knuckle joint?

Maintaining a knuckle joint involves routine checks and actions to ensure its smooth operation and longevity. First, inspect the joint regularly for wear, damage, or misalignment. Clean the joint to remove dirt and debris that can cause friction and premature wear. Apply lubrication as recommended by the manufacturer to reduce friction and prevent corrosion. Tighten any loose fasteners to maintain structural integrity. Replace worn or damaged components promptly to prevent further issues. Finally, conduct operational tests to verify proper functionality. By following these steps, you can ensure the knuckle joint operates effectively and safely, extending its service life and minimizing downtime.

How do you determine the correct size of a knuckle joint for a specific application?

Determining the correct size of a knuckle joint involves a comprehensive assessment of various factors. This includes analyzing the application's load requirements (static and dynamic), considering the necessary range of motion, evaluating environmental conditions, accommodating space limitations, and addressing mounting considerations. applications on industry standards, guidelines, and possibly consultations with experts to ensure the selected size can effectively withstand expected loads and movements while fitting seamlessly into the application's requirements.

Are there any limitations to using knuckle joints?

Knuckle joints have limitations, including wear and fatigue over time, particularly under high loads or harsh conditions. They may introduce backlash or play, impacting precision, and improper maintenance or lubrication can hasten wear. The designer must carefully consider these factors when integrating knuckle joints into designs, ensuring optimal performance and longevity.

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Knuckle Joints（Mounting Method：Tapped）

A knuckle joint is a type of pin joint used to join two components that are loaded in tension. One component has a fork with a hole passing through both sides, forming a double eye, while the other component has a single eye. The single eye is inserted between the double eyes so that all three holes are concentric and a pin is used to secure the components. Knuckle joints are often used to connect rods subjected to tension in structures such as roof ties, bridges, and cranes. The links of a chain are also considered a series of knuckle joints. Simplicity means that knuckle joints are easily manufactured while being strong and rigid under tension loads. They’re also easily assembled and disassembled.

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Type	Single Notched Knuckle Joints Double Notched Knuckle Joints Accessories
Brand	(2) (0) CKD (9)
CAD	2D 3D
Days to Ship	All 5 Day(s) or Less 6 Day(s) or Less 8 Day(s) or Less 10 Day(s) or Less 11 Day(s) or Less Others

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Double Notched Knuckle Joint for SCM

CKD

Double notched knuckle for SCA2, JSC3, USC, HCA. Pins and retaining rings are attached.

Mounting Method	Thread Size M(mm)	Type	Thread Pitch(mm)	Material	Accessories Included
Tapped	M8 ～ M26	Double Notched Knuckle Joints	1.25 ～ 1.5	Steel / Cast Iron	Included

From: ₹ 1,305.91
Days to Ship: 5 Day(s) or more

5 Day(s) or more

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Knuckle Joints - Tapped, Configurable

MISUMI

Knuckle Joints - Tapped, Configurable - equipped with Rotation Stopper and compatible with M3~M26 screws regardless of Convex Type or Concave Type.

CAD ：: 2D / 3D

Mounting Method	Thread Size M(mm)	Type	Thread Pitch(mm)	Material	Accessories Included
Tapped	M3 ～ M26	Single Notched Knuckle Joints / Double Notched Knuckle Joints	0.5 ～ 1.5	Steel / Stainless Steel	Not Included

Days to Ship: 8 Day(s) or more

8 Day(s) or more

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Knuckle Joints - B Selectable

MISUMI

Knuckle Joints equipped with Rotation Stopper and compatible with M3~M18 screws regardless of Convex Type or Concave Type.

CAD ：: 2D / 3D

Mounting Method	Thread Size M(mm)	Type	Thread Pitch(mm)	Material	Accessories Included
Tapped	M3 ～ M18	Single Notched Knuckle Joints / Double Notched Knuckle Joints	0.5 ～ 1.5	Steel / Stainless Steel	Not Included

Days to Ship: 8 Day(s) or more

8 Day(s) or more

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Single Knuckle Joint for SCM Brackets

CKD

Single clevis knuckle for CMK2, CMA2, CKV2, JSK2, JSM2.

Mounting Method	Thread Size M(mm)	Type	Thread Pitch(mm)	Material	Accessories Included
Tapped	M8 ～ M26	Single Notched Knuckle Joints	1.25 ～ 1.5	Steel / Cast Iron	Not Included

From: ₹ 1,068.87
Days to Ship: 5 Day(s) or more

5 Day(s) or more

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Bracket for SSD2, Single Knuckle Joint

CKD

Single clevis knuckle joint for cylinder SSD2.

Mounting Method	Thread Size M(mm)	Type	Thread Pitch(mm)	Material	Accessories Included
Tapped	M18 ～ M22	Single Notched Knuckle Joints	1.5	-	Not Included

From: ₹ 1,806.31
Days to Ship: 5 Day(s) or more

5 Day(s) or more

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Joint, Brackets for CMK2/CMA2/CKV2 /JSK2/JSM2/SSD/HCA

CKD

Knuckle joint for cylinder CMK2, CMA2, CKV2, JSK2, JSM2, SSD, HCA.

Mounting Method	Thread Size M(mm)	Type	Thread Pitch(mm)	Material	Accessories Included
Tapped	M10	Single Notched Knuckle Joints	1.25	Steel	Not Included

From: ₹ 1,333.98
Days to Ship: 5 Day(s) or more

5 Day(s) or more

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Fittings for SSD/SCP※2, Single Knuckle Joint

CKD

Single clevis knuckle for cylinder SSD, SCP*2.

Mounting Method	Thread Size M(mm)	Type	Thread Pitch(mm)	Material	Accessories Included
Tapped	M5	Single Notched Knuckle Joints	-	Steel	Not Included

From: ₹ 713.82
Days to Ship: 5 Day(s) or more

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SSD Fitting - Single Peaked Knuckle Joint

CKD

Single clevis knuckle joint for cylinder SSD.

CAD ：: 2D / 3D

Mounting Method	Thread Size M(mm)	Type	Thread Pitch(mm)	Material	Accessories Included
Tapped	M5 ～ M18	Single Notched Knuckle Joints	0.8 ～ 1.5	-	Not Included

From: ₹ 709.27
Days to Ship: 5 Day(s) or more

5 Day(s) or more

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Tool Pile Knuckle Joint Used for CMK2-CMA2-CKV2-JSK2-JSM2-HCA

CKD

[Features]
· CKD, CMK2, CMA2, CKV2, JSK2, JSM2, HCA single clevis knuckle usage

Mounting Method	Thread Size M(mm)	Type	Thread Pitch(mm)	Material	Accessories Included
Tapped	M8	Single Notched Knuckle Joints	1	Steel	Not Included

From: ₹ 1,322.78
Days to Ship: 5 Day(s) or more

5 Day(s) or more

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Single Knuckle Joint for CMK2, CMA2, CKV2, JSK2, JSM2 Brackets

CKD

Double notched knuckle for SCM. Pins and retaining rings are attached.

Mounting Method	Thread Size M(mm)	Type	Thread Pitch(mm)	Material	Accessories Included
Tapped	M12	Single Notched Knuckle Joints	1.5	Steel	Included

From: ₹ 1,331.71
Days to Ship: 5 Day(s) or more

5 Day(s) or more

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SCA2, JSC3, USC, and HCA Metal Fixture, Single Crevice Knuckle Joint

CKD

Single knuckle for HCM Pins and retaining rings are not included in accessories.

Mounting Method	Thread Size M(mm)	Type	Thread Pitch(mm)	Material	Accessories Included
Tapped	M14 ～ M26	Single Notched Knuckle Joints	1.5	Cast Iron	Included

From: ₹ 1,592.31
Days to Ship: 5 Day(s) or more

5 Day(s) or more


Brand
Product Series
CAD
From
Days to Ship
Mounting Method
Thread Size M(mm)
Type
Thread Pitch(mm)
Material
Accessories Included

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Brand	CKD	MISUMI	MISUMI	CKD	CKD	CKD	CKD	CKD	CKD	CKD	CKD
Product Series	Double Notched Knuckle Joint for SCM	Knuckle Joints - Tapped, Configurable	Knuckle Joints - B Selectable	Single Knuckle Joint for SCM Brackets	Bracket for SSD2, Single Knuckle Joint	Joint, Brackets for CMK2/CMA2/CKV2 /JSK2/JSM2/SSD/HCA	Fittings for SSD/SCP※2, Single Knuckle Joint	SSD Fitting - Single Peaked Knuckle Joint	Tool Pile Knuckle Joint Used for CMK2-CMA2-CKV2-JSK2-JSM2-HCA	Single Knuckle Joint for CMK2, CMA2, CKV2, JSK2, JSM2 Brackets	SCA2, JSC3, USC, and HCA Metal Fixture, Single Crevice Knuckle Joint
CAD		2D / 3D	2D / 3D					2D / 3D
From	₹ 1,305.91			₹ 1,068.87	₹ 1,806.31	₹ 1,333.98	₹ 713.82	₹ 709.27	₹ 1,322.78	₹ 1,331.71	₹ 1,592.31
Days to Ship	5 Day(s) or more	8 Day(s) or more	8 Day(s) or more	5 Day(s) or more	5 Day(s) or more	5 Day(s) or more	5 Day(s) or more	5 Day(s) or more	5 Day(s) or more	5 Day(s) or more	5 Day(s) or more
Mounting Method	Tapped	Tapped	Tapped	Tapped	Tapped	Tapped	Tapped	Tapped	Tapped	Tapped	Tapped
Thread Size M(mm)	M8 ～ M26	M3 ～ M26	M3 ～ M18	M8 ～ M26	M18 ～ M22	M10	M5	M5 ～ M18	M8	M12	M14 ～ M26
Type	Double Notched Knuckle Joints	Single Notched Knuckle Joints / Double Notched Knuckle Joints	Single Notched Knuckle Joints / Double Notched Knuckle Joints	Single Notched Knuckle Joints	Single Notched Knuckle Joints	Single Notched Knuckle Joints	Single Notched Knuckle Joints	Single Notched Knuckle Joints	Single Notched Knuckle Joints	Single Notched Knuckle Joints	Single Notched Knuckle Joints
Thread Pitch(mm)	1.25 ～ 1.5	0.5 ～ 1.5	0.5 ～ 1.5	1.25 ～ 1.5	1.5	1.25	-	0.8 ～ 1.5	1	1.5	1.5
Material	Steel / Cast Iron	Steel / Stainless Steel	Steel / Stainless Steel	Steel / Cast Iron	-	Steel	Steel	-	Steel	Steel	Cast Iron
Accessories Included	Included	Not Included	Not Included	Not Included	Not Included	Not Included	Not Included	Not Included	Not Included	Included	Included

Configure

Specification/Dimensions

Mounting Method
- Tapped
- Threaded
Larger Image

Clear

Thread Size M(mm)
M3

M4

M5

M6

M8

M10

M12

M14

M16

M18

M20

M22

M26
Clear

Thread Pitch(mm)
0.5

0.7

0.8

1

1.25

1.5

2

2.5
Clear

Material
- Steel
- Stainless Steel
- Cast Iron
Clear

Accessories Included
- Included
- Not Included
Clear

Related Categories to Knuckle Joints

FAQ Knuckle Joints

Question: In what applications are knuckle joints typically used?: Answer: knuckle joints are commonly utilized in mechanisms requiring controlled rotational movement. They find applications in steering systems for automobiles and aircraft, allowing for precise direction control. In industrial machinery, such as cranes and robotic arms, knuckle joints facilitate movement in specific directions, enhancing versatility. Moreover, they play a vital role in construction equipment like excavators and loaders, ensuring efficient operation. Additionally, knuckle joints feature prominently in material handling systems and medical devices, providing flexibility and controlled articulation for various functions in engineering work.
Question: What materials are commonly used for knuckle joints?: Answer: Knuckle joints, vital for controlled rotational movement, utilize diverse materials based on specific needs. Steel, including carbon, alloy, and stainless variants, offers durability and corrosion resistance, fitting for industrial applications. Aluminum alloys balance strength and lightness, favored in aerospace and automotive sectors. Brass and bronze, prized for corrosion resistance and malleability, find use in architectural and heavy-duty contexts. Titanium's exceptional strength-to-weight ratio and corrosion resistance suit aerospace and high-performance machinery. Material selection hinges on factors like strength, weight, corrosion resistance, and environmental conditions, ensuring optimal functionality in diverse applications.
Question: How do you maintain a knuckle joint?: Answer: Maintaining a knuckle joint involves routine checks and actions to ensure its smooth operation and longevity. First, inspect the joint regularly for wear, damage, or misalignment. Clean the joint to remove dirt and debris that can cause friction and premature wear. Apply lubrication as recommended by the manufacturer to reduce friction and prevent corrosion. Tighten any loose fasteners to maintain structural integrity. Replace worn or damaged components promptly to prevent further issues. Finally, conduct operational tests to verify proper functionality. By following these steps, you can ensure the knuckle joint operates effectively and safely, extending its service life and minimizing downtime.
Question: How do you determine the correct size of a knuckle joint for a specific application?: Answer: Determining the correct size of a knuckle joint involves a comprehensive assessment of various factors. This includes analyzing the application's load requirements (static and dynamic), considering the necessary range of motion, evaluating environmental conditions, accommodating space limitations, and addressing mounting considerations. applications on industry standards, guidelines, and possibly consultations with experts to ensure the selected size can effectively withstand expected loads and movements while fitting seamlessly into the application's requirements.
Question: Are there any limitations to using knuckle joints?: Answer: Knuckle joints have limitations, including wear and fatigue over time, particularly under high loads or harsh conditions. They may introduce backlash or play, impacting precision, and improper maintenance or lubrication can hasten wear. The designer must carefully consider these factors when integrating knuckle joints into designs, ensuring optimal performance and longevity.