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Knuckle Joints

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.

Type

Single Notched Knuckle Joints
Double Notched Knuckle Joints
Accessories

16 items

: 30; 45; 60

Knuckle Joint for Air Cylinder CJ2/CM2/CG1/CQ2 Series

SMC

Knuckle joint for air cylinder CJ2/CM2/CG1 series and compact cylinder CQ2 series.

[Please refer to the followings for the catalog]
p. 63, CJ2 series
pp. 189 and 190, CM2 series
pp. 309 and 309-1, CG1 series
p. 796, CQ2 series

Days to Ship: 31 Day(s) or more
Knuckle Joint for Air Cylinder, MB/MB1/MNB Series

SMC

Knuckle joint for air cylinder MB/MB1/MNB series.

Days to Ship: 32 Day(s) or more

Days to Ship:	31 Day(s) or more

Days to Ship:	32 Day(s) or more

Knuckle Joints − Fixed

MISUMI

Knuckle joints with fixed dimensions. Pins are included as an accessory.

Volume Discount

CAD ：: 2D / 3D

Standard Price:	SGD 12.89-
Days to Ship:	4 Day(s) or more

Knuckle Joint for Air Cylinder CS1, CNS, CLS Series

SMC

Knuckle joint for air cylinder CS1, CNS, CLS series.

Days to Ship: 32 Day(s) or more
Knuckle Joint for Air Cylinder CA2 / CNA2 Series

SMC

Knuckle joint for air cylinder CA2 / CNA2 series.

Days to Ship: 32 Day(s) or more

Days to Ship:	32 Day(s) or more

Days to Ship:	32 Day(s) or more

Double knuckle Joint for CMK2/CMA2/CKV2/JSK2/JSM2/HCA Brackets

CKD

Double notched knuckle for cylinder CMK2, CMA2, CKV2, JSK2, JSM2, HCA. Pin and washer split pin are attached.

Standard Price:	SGD 23.12
Days to Ship:	4 Day(s) or more

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

CKD

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

Standard Price:	SGD 19.44
Days to Ship:	4 Day(s) or more

Fittings for CMK2/CMA2/CKV2/JSK2/JSM2, Double Knuckle Joint

CKD

Double notched knuckle for cylinder CMK2, CMA2, CKV2, JSK2, JSM2. Pins and retaining rings are attached.

Standard Price:	SGD 24.12
Days to Ship:	4 Day(s) or more

Double Knuckle Joint Pin for CMK2, CMA2, CKV2, JSK2, JSM2 Brackets

CKD

Double notched knuckle for SSD. Pin (including ring) is attached.

Standard Price:	SGD 9.81-
Days to Ship:	4 Day(s) or more

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.

Standard Price:	SGD 23.12-
Days to Ship:	4 Day(s) or more

Double Notched Knuckle Metal Joint for SCA2/JSC3/USC/HCA

CKD

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

Standard Price:	SGD 34.44-
Days to Ship:	4 Day(s) or more

Brackets for SCG, JSG Double Notched Knuckle Joint

CKD

Double notched knuckle for SCG, JSG. Pins and split pins / flat washers are attached.

Standard Price:	SGD 38.02
Days to Ship:	12 Day(s) or more

Double Notched Knuckle Joint for SCM

CKD

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

Standard Price:	SGD 19.14-
Days to Ship:	4 Day(s) or more

SCP *2 Bracket Double Knuckle Joint

CKD

Double notched knuckle for cylinder SCP*2. Pins and retaining rings are attached.

Standard Price:	SGD 17.06
Days to Ship:	4 Day(s) or more

SSD Double Clevis Knuckle Joint

CKD

Mounting bracket to be attached to the cylinder.
[Features]
·Available as a double knuckle joint (Y/Y2).
[Applications]
·For SSD series.

CAD ：: 2D / 3D

Standard Price:	SGD 12.25-
Days to Ship:	4 Day(s) or more

Knuckle Joint for Pin Cylinder CJP2 Series

SMC

[Features]·Knuckle joint for Pin Cylinder CJP2 Series.

Standard Price:	SGD 1.75-
Days to Ship:	32 Day(s)


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


Brand	SMC	SMC	MISUMI	SMC	SMC	CKD	CKD	CKD	CKD	CKD	CKD	CKD	CKD	CKD	CKD	SMC
Product Series	Knuckle Joint for Air Cylinder CJ2/CM2/CG1/CQ2 Series	Knuckle Joint for Air Cylinder, MB/MB1/MNB Series	Knuckle Joints − Fixed	Knuckle Joint for Air Cylinder CS1, CNS, CLS Series	Knuckle Joint for Air Cylinder CA2 / CNA2 Series	Double knuckle Joint for CMK2/CMA2/CKV2/JSK2/JSM2/HCA Brackets	Single Knuckle Joint for CMK2, CMA2, CKV2, JSK2, JSM2 Brackets	Fittings for CMK2/CMA2/CKV2/JSK2/JSM2, Double Knuckle Joint	Double Knuckle Joint Pin for CMK2, CMA2, CKV2, JSK2, JSM2 Brackets	SCA2, JSC3, USC, and HCA Metal Fixture, Single Crevice Knuckle Joint	Double Notched Knuckle Metal Joint for SCA2/JSC3/USC/HCA	Brackets for SCG, JSG Double Notched Knuckle Joint	Double Notched Knuckle Joint for SCM	SCP *2 Bracket Double Knuckle Joint	SSD Double Clevis Knuckle Joint	Knuckle Joint for Pin Cylinder CJP2 Series
CAD			2D / 3D												2D / 3D
Days to Ship	31 Day(s) or more	32 Day(s) or more	4 Day(s) or more	32 Day(s) or more	32 Day(s) or more	4 Day(s) or more	4 Day(s) or more	4 Day(s) or more	4 Day(s) or more	4 Day(s) or more	4 Day(s) or more	12 Day(s) or more	4 Day(s) or more	4 Day(s) or more	4 Day(s) or more	32 Day(s)
Mounting Method	Tapped	Tapped	-	Tapped	Tapped	-	Tapped	-	-	Tapped	-	-	Tapped	-	-	Tapped
Thread Size M(mm)	5 ～ 26	10 ～ 27	M3 ～ M18	30 ～ 64	14 ～ 26	M8	M12	M12	-	M14 ～ M26	M14 ～ M26	M14 ～ M18	M8 ～ M26	M4	M5 ～ M18	3 ～ 5
Type	Double Notched Knuckle Joints / Accessories	Double Notched Knuckle Joints / Accessories	Single Notched Knuckle Joints / Double Notched Knuckle Joints	Double Notched Knuckle Joints / Accessories	Double Notched Knuckle Joints / Accessories	Double Notched Knuckle Joints	Single Notched Knuckle Joints	Double Notched Knuckle Joints	Accessories	Single Notched Knuckle Joints	Double Notched Knuckle Joints	Double Notched Knuckle Joints	Double Notched Knuckle Joints	Double Notched Knuckle Joints	Double Notched Knuckle Joints	Double Notched Knuckle Joints / Accessories
Thread Pitch(mm)	0.8 ～ 1.5	1.25 ～ 2	0.5 ～ 1.5	1.5 ～ 2	1.5	1	1.5	1.5	-	1.5	1.5	1.5	1.25 ～ 1.5	-	0.8 ～ 1.5	0.5 ～ 0.8
Material	Cast Iron ～ Steel	Stainless Steel ～ Steel	Cast Iron ～ Steel	Cast Iron ～ Stainless Steel	Cast Iron ～ Steel	Steel	Steel	Steel	Steel	Cast Iron	Cast Iron	Cast Iron	Cast Iron ～ Steel	Steel	-	Stainless Steel ～ Steel
Accessories Included	Included	Included	Included	Included	Included	Included	Included	Included	Included	Included	Included	Included	Included	Included	Included	Included

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Knuckle Joints

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