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Flexible Couplings - Disc type, high positioning accuracy.

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MISUMI

Most Suitable especially for Use for High-Presicion required Devices and in Clean Environment.

METRIC
inCAD Components

Part Number

Configured Part Number is shown.

Couplings - High Positioning Accuracy Disc, Clamping / Keyway:Related Image

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

・Materials

Type	[ M ]Material			[ S ]Surface Treatment			[ A ]Accessories
Type	Body	Disc	Screw	Body	Disc	Screw	[ A ]Accessories
SCXW SCXWK	Aluminum Alloy	Stainless Steel	4137 Alloy Steel	Clear Anodize	-	Trivalent Chromate	Hex Socket Head Cap Screw, Set Screw

Specifications

Part Number	-	Shaft Bore Dia. d₁	-	Shaft Bore Dia. d₂
SCXW46	-	10	-	14
SCXWK46	-	12	-	14
SCPW34	-	8	-	12

Part Number		d₁, d₂ (d₁≤d₂) [ ! ]Only the dimensions in ( ) are selectable for Keywayed Bore Type.														D	d₃	L	ℓ	F		A	Clamp Screw
Type	No.																			F			M	Tightening Torque (N·m)
Type	No.																			SCXW	SCXWK		M	Tightening Torque (N·m)
Double Disc Type SCXW Double Disc Type - Keywayed Bore SCXWK	21	4	5	6	(8)											21	9.5	24.5	7	3.5	3	7	M2.6	1.2
	28		5	6	(8)	(10)										28	12	32	9	4	4	9.5	M3	1.5
	34			6	(8)	(10)	(12)	(14)								34	17	35	9.8	5	4.5	12	M3	1.5
	46				8	(10)	(12)	(14)	15	17	19					46	22	44	12.6	6	6	16.5	M4	3.5
	55						12	14	15	17	19	20	22	24	25	54.5	26	55	16	7	-	20.5	M5	7

■Double Disc Type (High Positioning Accuracy)

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)	Compensation Factor	Mass (g)
Type	No.
SCXW SCXWK	21	1.2	1.0	0.10	900	10000	1.20x10^-6	±0.20	1.5	18
	28	1.6	1.2	0.15	3600		4.68x10^-6			42
	34	4.0	1.5	0.20	5700		1.10x10^-5			65
	46	10.0		0.25	14500		4.70x10^-5	±0.30		151
	55	25.0			23000		1.19x10^-4			260

[ ! ]Static torsional spring constant, inertia moment, and mass values are for cases of maximum shaft diameter.

Price list

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

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

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

More Information

Technical Information

Keyway Dimensions

Shaft Bore Dia. d1, d2	b		t		Key Nom. Dim. b x h	Set Screw
Shaft Bore Dia. d1, d2	Dim.	Tolerance	Dim.	Tolerance	Key Nom. Dim. b x h	Size	Tightening Torque (N・m)
8-10	3	±0.0125	1.4	+0.1 0	3x3	M2	0.3
12	4	±0.0150	1.8		4x4	M3	0.7
14	5	±0.0150	2.3		5x5	M4	1.7

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

Disc Couplings

Zero backlash, and best suited for high torque servo motor applications. characteristics.

Designed to absorb misalignments by disc flexures.
Zero backlash nature provides high angular accuracy, suitable for applications requiring high positioning accuracies.
The High Rigidity Type couplings have largely improved torsional rigidity over the Standard Types due to screw-coupled discs instead of the swage-coupled discs of the Standard.

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

CAD Data download and 3D preview are not available because the part number has not yet been determined.

*In order to open the CAD Data download and 3D preview screen, the part number must be fixed.
Please confirm the part number from "Specification / Dimension"on the left side, and then perform the CAD Data Download / 3D Preview operation.

CAD Download

: 30; 45; 60

Part Number
SCXW21-[4,5,6,8]-[4,5,6,8]
SCXW28-[5,6,8,10]-[5,6,8,10]
SCXW34-[6,8,10,12,14]-[6,8,10,12,14]
SCXWK21-8-8
SCXWK28-[8,10]-[8,10]
SCXWK34-[8,10,12,14]-[8,10,12,14]

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)	Allowable Torque (N•m)	Allowable Angular Misalignment (deg)	Allowable Lateral Misalignment Range (mm)	Allowable Lateral Misalignment (mm)	Allowable Axial Misalignment (mm)	Moment of Inertia (kg･m²)	Shaft Bore Shape
1 Piece(s)	8 Days or more	10	1.01~3.00	4 ～ 8	4 ～ 8	21	24.5	1.2	1	0.02~0.2	0.1	+0.20/-0.20	1.20×10^-6	Standard Holes
1 Piece(s)	8 Days or more	10	1.01~3.00	5 ～ 10	5 ～ 10	28	32	1.6	1.2	0.02~0.2	0.15	+0.20/-0.20	4.68×10^-6	Standard Holes
1 Piece(s)	Quote	10	3.01~5.00	6 ～ 14	6 ～ 14	34	35	4	1.5	0.02~0.2	0.2	+0.20/-0.20	1.10×10^-5	Standard Holes
1 Piece(s)	8 Days or more	10	1.01~3.00	8	8	21	24.5	1.2	1	0.02~0.2	0.1	+0.20/-0.20	1.20×10^-6	Hole with Keyway d1/d2 Side
1 Piece(s)	8 Days or more	10	1.01~3.00	8 ～ 10	8 ～ 10	28	32	1.6	1.2	0.02~0.2	0.15	+0.20/-0.20	4.68×10^-6	Hole with Keyway d1/d2 Side
1 Piece(s)	8 Days or more	10	3.01~5.00	8 ～ 14	8 ～ 14	34	35	4	1.5	0.02~0.2	0.2	+0.20/-0.20	1.10×10^-5	Hole with Keyway d1/d2 Side

Example

Product TOP

Basic Information

Series Name	Disc Type	Allowable Misalignment	Angular / Eccentricity / Axial	Application	For Servo Motors
Max. Rotational Speed Range(r/min)	4001~10000	Features	High Torsional Rigidity / High Torque Type / High Positioning Accuracy Type / Zero Backlash / Low Moment of Inertia / Clean Environment	Body Material	Aluminum
Category	Coupling Main Body	Max. Rotational Speed(r/min)	10000	Disc Material	Stainless Steel
Single/Double	Double

Configure

6 Part Numbers

View Part Numbers

Configure Remaining Specifications

Completed

Specification/Dimensions

Allowable Torque Range(N•m)
1.01~3.00

3.01~5.00

5.01~10.00

20.01~50.00
Clear
For Shaft Size d1(mm)
4

5

6

8

10

12

14

15

17

19

20

22

24

25
Clear
For Shaft Size d2(mm)
4

5

6

8

10

12

14

15

17

19

20

22

24

25
Clear
O.D. D(Ø)
21

28

34

46

54.5
Clear
Overall Length(mm)
24.5

32

35

44

55
Clear
Allowable Torque(N•m)
1.2

1.6

4

10

25
Clear
Allowable Angular Misalignment(deg)
1

1.2

1.5
Clear
Allowable Lateral Misalignment(mm)
0.1

0.15

0.2

0.25
Clear
Shaft Bore Shape
Hole with Keyway d1/d2 Side

Standard Holes
Clear
type
- SCXW
- SCXWK
Clear
Allowable Lateral Misalignment Range(mm)
0.02~0.2

0.21~0.40
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

8 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

Rotary Shafts - Straight.
MISUMI Days to Ship : 7 Days or more
Drive Shafts - Straight
MISUMI Days to Ship : 12 Days or more
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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About This Website

About MISUMI Corporation

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

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All Categories

Categories

Applications

Brands

How can we improve?

Flexible Couplings - Disc type, high positioning accuracy.

Specifications

Price list

More Information

Technical Information

Keyway Dimensions

Support Information

MISUMI Coupling Type

Features

Disc Couplings

Cautions

Use Precautions

Compatible Models

Part Number

Example

Basic Information

Configure

Specification/Dimensions

Allowable Torque Range(N•m)

For Shaft Size d1(mm)

For Shaft Size d2(mm)

O.D. D(Ø)

Overall Length(mm)

Allowable Torque(N•m)

Allowable Angular Misalignment(deg)

Allowable Lateral Misalignment(mm)

Shaft Bore Shape

type

Allowable Lateral Misalignment Range(mm)

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)