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Flexible Couplings - Oldham type, high stiffness, set screw type.

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MISUMI

Oldham type flexible couplings with clamp type fastening. Optionally selectable keyway can be selected at both ends. Features selectable alterations to increase the width of the keyway.

METRIC
inCAD Components

Part Number

Configured Part Number is shown.

Couplings - High Rigidity, Oldham, Set Screw Type:Related Image

[ ! ]For the selection criteria and alignment procedures >> Click here

・Materials

Standard Bore	Keywayed Bore		[ M ]Material		[ A ]Accessories
Standard Bore	d₂ (One Side)	d₁, d₂ (Both Sides)	Hub	Spacer	[ A ]Accessories
MCOG	MCOGRK	MCOGWK	304 Stainless Steel (Sintered)	Aluminum Bronze (Sold Lubricant Embedded)	Set Screw

Specifications

Part Number	-	Shaft Bore Dia. d₁	-	Shaft Bore Dia. d₂
MCOG20	-	6	-	6
MCOGRK20	-	8	-	12
MCOGWK20	-	10	-	12

Part Number		d₁, d₂ (d₁≤d₂) [ ! ]Keywayed Bore Type is selectable for diameter 6 or larger.															D	D₁	d₃	L	ℓ	F	Set Screw
Type	No.																D	D₁	d₃	L	ℓ	F	M	Tightening Torque (N·m)
MCOG MCOGRK MCOGWK	15	4	5	6	6.35	7	8										14.5	15	7.2	16	5.4	2.6	M3	0.7
	17		5	6	6.35	7	8										16.8	17.5	8.2	19.8	6.7	3.2	M4	1.7
	20			6	6.35	7	8	9.53	10	11	12						20	21	9	21.4	7	3.4
	26			6	6.35	7	8	9.53	10	11	12	14					26	27	12	25.6	9	4
	30						8		10		12	14					30	31	14	33	12	6
	34								10	11	12	14	15	16			34	35	14	34	13	5.5	M5	4.0
	38								10		12	14	15	16	18	20	38	41	17	39.5	15	7	M5	4.0

Part Number		Allowable Torque (N·m)	Angular Misalignment (°)	Lateral Misalignment (mm)	Static Torsional Spring Constant (N·m/rad)	Max. Rotational Speed (r/min)	Moment of Inertia (kg·m²)	Allowable Axial Misalignment (mm)	Mass (g)
Type	No.	Allowable Torque (N·m)	Angular Misalignment (°)	Lateral Misalignment (mm)	Static Torsional Spring Constant (N·m/rad)	Max. Rotational Speed (r/min)	Moment of Inertia (kg·m²)	Allowable Axial Misalignment (mm)	Mass (g)
MCOG MCOGRK MCOGWK	15	3	1.5	0.5	800	8000	4 x10^-8	±0.1	15
	17	5		0.5	1000	7000	1 x10^-7	±0.1	25
	20	7		0.5	2200	6000	2 x10^-6	±0.1	37
	26	10		0.8	4000	5000	6 x10^-6	±0.2	79
	30	30		1	5500	5000	2.5x10^-5	±0.3	120
	34	32		1	8000	4000	4 x10^-5	±0.2	180
	38	50		1	11000	4000	1x10^-4	±0.3	256

[ ! ] When lateral misalignment is more than 0.1, spacer wear will be in proportion to the amount of load torque, lateral misalignment, and the number of rotations.
[ ! ] Excellent in torque and speed applications.

Price list

■Volume Discount Rate ([ ! ]Round down to nearest one cent.) P.89

Quantity	1~9	10~14	15~19	20~29
Discount Rate	Unit Price	5%	10%	18%

[ ! ]Fovr orders larger than indicated quantity, please request a quotation.

Alterations

More Information

Technical Information

Keyway Dimensions

Shaft Bore Dia. d1, d2	b		t		Key Nom. Dim. b x h
Shaft Bore Dia. d1, d2	Dim.	Tolerance	Dim.	Tolerance	Key Nom. Dim. b x h
6-7.9	2	±0.0125	1.0	+0.1 0	2x2
8-10	3	±0.0125	1.4		3x3
10.1-12	4	±0.0150	1.8		4x4
12.1-17	5		2.3		5x5
17.1-20	6		2.8		6x6

Support Information

MISUMI Coupling Type

Coupling Type	Disk Tye	With Slit Type	Oldham Type	Jaw Type	Bellows Type	Rigid Type	Universal Joints Type	Chain Couplings Type
Photo
Shaft Bore Dia	Ø2-60 mm	Ø1.5-35 mm	Ø1-47 mm	Ø3-60 mm	Ø0-62 mm	Ø3-35 mm	Ø1-60 mm	Ø14-55 mm
Mortor Recommendation	Servo Motor Stepping Motors	Servo Motor Stepping Motors	*General Purpose Morter	Stepping Motors General Purpose Morter	*Stepping Motors	Servo Motor Stepping Motors	Stepping Motors General Purpose Morter	*General Purpose Morter
Torque	0.15-800 N·m	0.05-35 N·m	0.06-352 N·m	0.31-1,350 N·m	0.3-500 N·m	0.3-206 N·m	0.25-495 N·m	100-2,372 N·m
Zero Backlash	Excellent	Excellent	Inefficient	Inefficient	Good	Excellent	Inefficient	Inefficient
Allowable Angular Misalignment	Good	Good	Excellent	Reasonable	Excellent	Inefficient	Excellent	Reasonable
Allowable Lateral Misalignment	Reasonable	Reasonable	Excellent	Reasonable	Reasonable	Inefficient	Inefficient	Reasonable
Axial Misalignment	Good	Reasonable	Good	Inefficient	Excellent	Inefficient	Inefficient	Inefficient
See all options	Click here	Click here	Click here	Click here	Click here	Click here	Click here	Click here

For more details on each type of coupling click here

Features

Oldham Couplings

Easy to install with large angular/lateral misalignment allowances characteristics.

Spacers designed to flex and slide to allow misalignments.
Larger misalignment allowance ranges compared to the other types, making for easy to adjust for installing.
High rigidity type has bronze spacer material instead of resin, and has torque capacity 2x of the conventional type.
Space-Saving Type up to 17% shorter in length contributing to space saving machine designs.

Cautions

Use Precautions

Make sure to keep misalignment within the allowed range and avoid excessive torque. Otherwise the coupling’s life will be shortened considerably due to plastic deformation.
For your safety, enclose the revolving parts of equipment with a protective cover.
If the coupling item generates abnormal metallic noises, immediately turn off the equipment and identify the cause. Such noises may be an indication of improper alignment, shaft interference or a loose screw.
For applications with a large load fluctuation, apply an adhesive agent on the coupling’s screws to prevent them from loosening. Alternatively, select a coupling of a larger size/load capability.

Compatible Models

Category	Rotary Shafts	Lead Screw Shafts	Lead Screw Nuts	Lead Screw Position Indicators	Ball Screws
Image

Part Number

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CAD Download

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Part Number
MCOG30-[8,10,12,14]-[8,10,12,14]
MCOG30-[8,10,12,14]-RDC[8.1-14/0.1]
MCOG30-LDC[8.1-14/0.1]-[8,10,12,14]
MCOG30-LDC[8.1-14/0.1]-RDC[8.1-14/0.1]
MCOG34-[10,11,12,14,15,16]-[10,11,12,14,15,16]
MCOG34-[10,11,12,14,15,16]-RDC[10.1-20/0.1]
MCOG34-LDC[10.1-20/0.1]-[10,11,12,14,15,16]
MCOG34-LDC[10.1-20/0.1]-RDC[10.1-20/0.1]
MCOG38-[10,12,14,15,16,18,20]-[10,12,14,15,16,18,20]
MCOG38-[10,12,14,15,16,18,20]-RDC[10.1-20/0.1]
MCOG38-LDC[10.1-20/0.1]-[10,12,14,15,16,18,20]
MCOG38-LDC[10.1-20/0.1]-RDC[10.1-20/0.1]
MCOGRK30-[8,10,12,14]-[8,10,12,14]
MCOGRK30-[8,10,12,14]-RDC[8.1-14/0.1]
MCOGRK30-LDC[8.1-14/0.1]-[8,10,12,14]
MCOGRK30-LDC[8.1-14/0.1]-RDC[8.1-14/0.1]
MCOGRK34-[10,11,12,14,15,16]-[10,11,12,14,15,16]
MCOGRK34-[10,11,12,14,15,16]-RDC[10.1-20/0.1]
MCOGRK34-LDC[10.1-20/0.1]-[10,11,12,14,15,16]
MCOGRK34-LDC[10.1-20/0.1]-RDC[10.1-20/0.1]
MCOGRK38-[10,12,14,15,16,18,20]-[10,12,14,15,16,18,20]
MCOGRK38-[10,12,14,15,16,18,20]-RDC[10.1-20/0.1]
MCOGRK38-LDC[10.1-20/0.1]-[10,12,14,15,16,18,20]
MCOGRK38-LDC[10.1-20/0.1]-RDC[10.1-20/0.1]
MCOGWK30-[8,10,12,14]-[8,10,12,14]
MCOGWK30-[8,10,12,14]-RDC[8.1-14/0.1]
MCOGWK30-LDC[8.1-14/0.1]-[8,10,12,14]
MCOGWK30-LDC[8.1-14/0.1]-RDC[8.1-14/0.1]
MCOGWK34-[10,11,12,14,15,16]-[10,11,12,14,15,16]
MCOGWK34-[10,11,12,14,15,16]-RDC[10.1-20/0.1]
MCOGWK34-LDC[10.1-20/0.1]-[10,11,12,14,15,16]
MCOGWK34-LDC[10.1-20/0.1]-RDC[10.1-20/0.1]
MCOGWK38-[10,12,14,15,16,18,20]-[10,12,14,15,16,18,20]
MCOGWK38-[10,12,14,15,16,18,20]-RDC[10.1-20/0.1]
MCOGWK38-LDC[10.1-20/0.1]-[10,12,14,15,16,18,20]
MCOGWK38-LDC[10.1-20/0.1]-RDC[10.1-20/0.1]

Minimum order quantity	Days to Ship	RoHS	Allowable Torque Range (N•m)	For Shaft Size d1 (mm)	For Shaft Size d2 (mm)	O.D. D (Ø)	Overall Length (mm)	Max. Rotational Speed Range (r/min)	Allowable Torque (N•m)	Max. Rotational Speed (r/min)	Allowable Lateral Misalignment (mm)	Allowable Axial Misalignment (mm)	Moment of Inertia (kg･m²)	Shaft Bore Shape	Shaft I.D. d1 Change Hole Dia. [LDC] Specified in 0.1mm Increment	Shaft I.D. d2 Change Hole Dia. [RDC] Specified in 0.1mm Increment
1 Piece(s)	8 Days or more	10	20.01~50.00	8 ～ 14	8 ～ 14	30	33	4001~10000	30	5000	1	+0.3/-0.3	2.5×10^-5	Standard Holes	-	-
1 Piece(s)	8 Days or more	10	20.01~50.00	8 ～ 14	-	30	33	4001~10000	30	5000	1	+0.3/-0.3	2.5×10^-5	Standard Holes	-	8.1 ～ 14
1 Piece(s)	8 Days or more	10	20.01~50.00	-	8 ～ 14	30	33	4001~10000	30	5000	1	+0.3/-0.3	2.5×10^-5	Standard Holes	8.1 ～ 14	-
1 Piece(s)	8 Days or more	10	20.01~50.00	-	-	30	33	4001~10000	30	5000	1	+0.3/-0.3	2.5×10^-5	Standard Holes	8.1 ～ 14	8.1 ～ 14
1 Piece(s)	8 Days or more	10	20.01~50.00	10 ～ 16	10 ～ 16	34	34	2001~4000	32	4000	1	+0.2/-0.2	4 ×10^-5	Standard Holes	-	-
1 Piece(s)	8 Days or more	10	20.01~50.00	10 ～ 16	-	34	34	2001~4000	32	4000	1	+0.2/-0.2	4 ×10^-5	Standard Holes	-	10.1 ～ 20
1 Piece(s)	8 Days or more	10	20.01~50.00	-	10 ～ 16	34	34	2001~4000	32	4000	1	+0.2/-0.2	4 ×10^-5	Standard Holes	10.1 ～ 20	-
1 Piece(s)	8 Days or more	10	20.01~50.00	-	-	34	34	2001~4000	32	4000	1	+0.2/-0.2	4 ×10^-5	Standard Holes	10.1 ～ 20	10.1 ～ 20
1 Piece(s)	8 Days or more	10	20.01~50.00	10 ～ 20	10 ～ 20	38	39.5	2001~4000	50	4000	1	+0.3/-0.3	1×10^-4	Standard Holes	-	-
1 Piece(s)	8 Days or more	10	20.01~50.00	10 ～ 20	-	38	39.5	2001~4000	50	4000	1	+0.3/-0.3	1×10^-4	Standard Holes	-	10.1 ～ 20
1 Piece(s)	8 Days or more	10	20.01~50.00	-	10 ～ 20	38	39.5	2001~4000	50	4000	1	+0.3/-0.3	1×10^-4	Standard Holes	10.1 ～ 20	-
1 Piece(s)	8 Days or more	10	20.01~50.00	-	-	38	39.5	2001~4000	50	4000	1	+0.3/-0.3	1×10^-4	Standard Holes	10.1 ～ 20	10.1 ～ 20
1 Piece(s)	10 Days or more	10	20.01~50.00	8 ～ 14	8 ～ 14	30	33	4001~10000	30	5000	1	+0.3/-0.3	2.5×10^-5	Hole with Keyway d2 Side	-	-
1 Piece(s)	10 Days or more	10	20.01~50.00	8 ～ 14	-	30	33	4001~10000	30	5000	1	+0.3/-0.3	2.5×10^-5	Hole with Keyway d2 Side	-	8.1 ～ 14
1 Piece(s)	10 Days or more	10	20.01~50.00	-	8 ～ 14	30	33	4001~10000	30	5000	1	+0.3/-0.3	2.5×10^-5	Hole with Keyway d2 Side	8.1 ～ 14	-
1 Piece(s)	10 Days or more	10	20.01~50.00	-	-	30	33	4001~10000	30	5000	1	+0.3/-0.3	2.5×10^-5	Hole with Keyway d2 Side	8.1 ～ 14	8.1 ～ 14
1 Piece(s)	10 Days or more	10	20.01~50.00	10 ～ 16	10 ～ 16	34	34	2001~4000	32	4000	1	+0.2/-0.2	4 ×10^-5	Hole with Keyway d2 Side	-	-
1 Piece(s)	10 Days or more	10	20.01~50.00	10 ～ 16	-	34	34	2001~4000	32	4000	1	+0.2/-0.2	4 ×10^-5	Hole with Keyway d2 Side	-	10.1 ～ 20
1 Piece(s)	10 Days or more	10	20.01~50.00	-	10 ～ 16	34	34	2001~4000	32	4000	1	+0.2/-0.2	4 ×10^-5	Hole with Keyway d2 Side	10.1 ～ 20	-
1 Piece(s)	10 Days or more	10	20.01~50.00	-	-	34	34	2001~4000	32	4000	1	+0.2/-0.2	4 ×10^-5	Hole with Keyway d2 Side	10.1 ～ 20	10.1 ～ 20
1 Piece(s)	10 Days or more	10	20.01~50.00	10 ～ 20	10 ～ 20	38	39.5	2001~4000	50	4000	1	+0.3/-0.3	1×10^-4	Hole with Keyway d2 Side	-	-
1 Piece(s)	10 Days or more	10	20.01~50.00	10 ～ 20	-	38	39.5	2001~4000	50	4000	1	+0.3/-0.3	1×10^-4	Hole with Keyway d2 Side	-	10.1 ～ 20
1 Piece(s)	10 Days or more	10	20.01~50.00	-	10 ～ 20	38	39.5	2001~4000	50	4000	1	+0.3/-0.3	1×10^-4	Hole with Keyway d2 Side	10.1 ～ 20	-
1 Piece(s)	10 Days or more	10	20.01~50.00	-	-	38	39.5	2001~4000	50	4000	1	+0.3/-0.3	1×10^-4	Hole with Keyway d2 Side	10.1 ～ 20	10.1 ～ 20
1 Piece(s)	10 Days or more	10	20.01~50.00	8 ～ 14	8 ～ 14	30	33	4001~10000	30	5000	1	+0.3/-0.3	2.5×10^-5	Hole with Keyway d1/d2 Side	-	-
1 Piece(s)	10 Days or more	10	20.01~50.00	8 ～ 14	-	30	33	4001~10000	30	5000	1	+0.3/-0.3	2.5×10^-5	Hole with Keyway d1/d2 Side	-	8.1 ～ 14
1 Piece(s)	10 Days or more	10	20.01~50.00	-	8 ～ 14	30	33	4001~10000	30	5000	1	+0.3/-0.3	2.5×10^-5	Hole with Keyway d1/d2 Side	8.1 ～ 14	-
1 Piece(s)	10 Days or more	10	20.01~50.00	-	-	30	33	4001~10000	30	5000	1	+0.3/-0.3	2.5×10^-5	Hole with Keyway d1/d2 Side	8.1 ～ 14	8.1 ～ 14
1 Piece(s)	10 Days or more	10	20.01~50.00	10 ～ 16	10 ～ 16	34	34	2001~4000	32	4000	1	+0.2/-0.2	4 ×10^-5	Hole with Keyway d1/d2 Side	-	-
1 Piece(s)	10 Days or more	10	20.01~50.00	10 ～ 16	-	34	34	2001~4000	32	4000	1	+0.2/-0.2	4 ×10^-5	Hole with Keyway d1/d2 Side	-	10.1 ～ 20
1 Piece(s)	10 Days or more	10	20.01~50.00	-	10 ～ 16	34	34	2001~4000	32	4000	1	+0.2/-0.2	4 ×10^-5	Hole with Keyway d1/d2 Side	10.1 ～ 20	-
1 Piece(s)	10 Days or more	10	20.01~50.00	-	-	34	34	2001~4000	32	4000	1	+0.2/-0.2	4 ×10^-5	Hole with Keyway d1/d2 Side	10.1 ～ 20	10.1 ～ 20
1 Piece(s)	10 Days or more	10	20.01~50.00	10 ～ 20	10 ～ 20	38	39.5	2001~4000	50	4000	1	+0.3/-0.3	1×10^-4	Hole with Keyway d1/d2 Side	-	-
1 Piece(s)	10 Days or more	10	20.01~50.00	10 ～ 20	-	38	39.5	2001~4000	50	4000	1	+0.3/-0.3	1×10^-4	Hole with Keyway d1/d2 Side	-	10.1 ～ 20
1 Piece(s)	10 Days or more	10	20.01~50.00	-	10 ～ 20	38	39.5	2001~4000	50	4000	1	+0.3/-0.3	1×10^-4	Hole with Keyway d1/d2 Side	10.1 ～ 20	-
1 Piece(s)	10 Days or more	10	20.01~50.00	-	-	38	39.5	2001~4000	50	4000	1	+0.3/-0.3	1×10^-4	Hole with Keyway d1/d2 Side	10.1 ～ 20	10.1 ～ 20

Product TOP

Basic Information

Series Name	Oldham Type	Allowable Misalignment	Angular / Eccentricity / Axial	Application	Standard
Features	High Torsional Rigidity / High Torque Type / Low Moment of Inertia	Body Material	304 Stainless Steel Sintered Alloy	Category	Coupling Main Body
Allowable Angular Misalignment(deg)	1.5	Allowable Lateral Misalignment Range(mm)	0.41~1.0	Buffer Part Material	Aluminum Bronze (Solid Lubricant Embedded)

Configure

36 Part Numbers

View Part Numbers

Configure Remaining Specifications

Completed

Specification/Dimensions

For Shaft Size d1(mm)
4

5

6

6.35

7

8

9.53

10

11

12

14

15

16

18

20
Clear
For Shaft Size d2(mm)
4

5

6

6.35

7

8

9.53

10

11

12

14

15

16

18

20
Clear
O.D. D(Ø)
14.5

16.8

20

26

30

34

38
Clear
Overall Length(mm)
16

19.8

21.4

25.6

33

34

39.5
Clear
Max. Rotational Speed Range(r/min)
2001~4000

4001~10000
Clear
Allowable Torque(N•m)
3

5

7

10

30

32

50
Clear
Max. Rotational Speed(r/min)
4000

5000

6000

7000

8000
Clear
Allowable Lateral Misalignment(mm)
0.5

0.8

1
Clear
Shaft Bore Shape
Hole with Keyway d1/d2 Side

Hole with Keyway d2 Side

Standard Holes
Clear
Shaft I.D. d1 Change Hole Dia. [LDC] Specified in 0.1mm Increment
[8.1-20/0.1]
Clear
Shaft I.D. d2 Change Hole Dia. [RDC] Specified in 0.1mm Increment
[8.1-20/0.1]
Clear
type
- MCOG
- MCOGRK
- MCOGWK
Clear
Allowable Torque Range(N•m)
1.01~3.00

3.01~5.00

5.01~10.00

20.01~50.00
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

8 Days or Less

10 Days or Less
Clear

Specify Alterations

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

Additional Products in this Category

Complementary Products

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Bearings with Housing - Direct mounting, compact housing.
MISUMI Days to Ship : 8 Days or more
Bearings with Housing - Angular contact bearings, one deep groove ball bearing, round flange, double bearings.
MISUMI Days to Ship : 12 Days or more

MISUMI Unit Example related to this product

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Tech Support

Technical Support: Tel：+52-442-672-7661 ext. 2 then wait and dial 4
E-mail: soportetecnico@misumimex.com; Mon. - Fri. 8 a.m. - 6 p.m.; Technical Inquiry

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How can we improve?

Flexible Couplings - Oldham type, high stiffness, set screw type.

Specifications

Price list

Alterations

More Information

Technical Information

Keyway Dimensions

Support Information

MISUMI Coupling Type

Features

Oldham Couplings

Cautions

Use Precautions

Compatible Models

Part Number

Basic Information

Configure

Specification/Dimensions

For Shaft Size d1(mm)

For Shaft Size d2(mm)

O.D. D(Ø)

Overall Length(mm)

Max. Rotational Speed Range(r/min)

Allowable Torque(N•m)

Max. Rotational Speed(r/min)

Allowable Lateral Misalignment(mm)

Shaft Bore Shape

Shaft I.D. d1 Change Hole Dia. [LDC] Specified in 0.1mm Increment

Shaft I.D. d2 Change Hole Dia. [RDC] Specified in 0.1mm Increment

type

Allowable Torque Range(N•m)

CAD

Days to Ship

Specify Alterations

Additional Products in this Category

Complementary Products

MISUMI Unit Example related to this product

Tech Support

About This Website

About MISUMI Corporation

Contact us Monday to Friday: 8:00 am to 6:00 pm (Mexico City time)