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Disc Couplings Servo - Fine, for Servo Motors (High Positioning Accuracy)

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MISUMI

[Features]It is especially suitable for equipment that requires high precision and for use in clean environments.

Part Number

Configured Part Number is shown.

Drawing/Specifications
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Part Numbers
More Information
Catalog
Technical Information

Double Disc Type		Double Disc Type - Keywayed Bore (Keywayed Bore d₁, d₂)
SCXW		SCXWK

* Tapped holes for clamping screws may go through for some sizes.
[ ! ] Recommended Tolerance of Shaft Diameter: h7.
[ ! ] Tolerances for d₁ and d₂ are values before slit machining.
[ ! ] The lateral, angular, and axial misalignment values shown are for each occurring individually. When multiple misalignments are occurring simultaneously, the allowable maximum value of each will be reduced to 1/2.

Type	[A]Included Screw	[M] Material			[S] Surface Treatment
		Main Body	Disc	Screw	Main Body	Screw
SCXW SCXWK	Hex Socket Head Cap Screw	Aluminum Alloy	Stainless steel	SCM435	Clear Anodize Treatment	Black Oxide Film
	Set Screw

Specification Table

Part Number	—	Shaft Bore Dia. d₁	—	Shaft Bore Dia. d₂
SCXW46	—	10	—	14
SCXWK46	—	12	—	14

Part Number		d₁, d₂ Selection (However, 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)	Allowable Angular Misalignment (°)	Allowable 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 Compensation Factor	Mass (g)
Type	No.
SCXW SCXWK	21	1.2	1.0	0.10	900	10000	1.20 × 10^－6	±0.20	1.5	18
	28	1.6	1.2	0.15	3600		4.68 × 10^－6			42
	34	4.0	1.5	0.20	5700		1.10 × 10^－5			65
	46	10.0		0.25	14500		4.70 × 10^－5	±0.30		151
	55	25.0			23000		1.19 × 10^－4			260

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

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]
SCXW46-[8,10,12,14,15,17,19]-[8,10,12,14,15,17,19]
SCXW55-[12,14,15,17,19,20,22,24,25]-[12,14,15,17,19,20,22,24,25]
SCXWK21-8-8
SCXWK28-[8,10]-[8,10]
SCXWK34-[8,10,12,14]-[8,10,12,14]
SCXWK46-[10,12,14]-[10,12,14]

Standard Unit Price	Minimum order quantity	Days to Ship	RoHS	Shaft Bore Dia. 1 d1 (or d) (Ø)	Shaft Bore Dia. 2 d2 (or d) (Ø)	O.D. (Ø)	Overall Length (mm)	Allowable Torque Range (N•m)	Allowable Torque (N•m)	Allowable Angular Misalignment (deg)	Allowable Lateral Misalignment (mm)	Allowable Lateral Misalignment Range (mm)	Allowable Axial Misalignment (mm)	Moment of Inertia (kg・m2)	Shaft Bore Shape
-	1 Piece(s)	4 Day(s) or more	10	4 ～ 8	4 ～ 8	21	24.5	1.01~3.00	1.2	1	0.1	0.02~0.2	+0.20/-0.20	1.20×10^-6	Standard Bore
-	1 Piece(s)	4 Day(s) or more	10	5 ～ 10	5 ～ 10	28	32	1.01~3.00	1.6	1.2	0.15	0.02~0.2	+0.20/-0.20	4.68×10^-6	Standard Bore
-	1 Piece(s)	4 Day(s) or more	10	6 ～ 14	6 ～ 14	34	35	3.01~5.00	4	1.5	0.2	0.02~0.2	+0.20/-0.20	1.10×10^-5	Standard Bore
-	1 Piece(s)	4 Day(s) or more	10	8 ～ 19	8 ～ 19	46	44	5.01~10.00	10	1.5	0.25	0.21~0.40	+0.30/-0.30	4.70×10^-5	Standard Bore
-	1 Piece(s)	4 Day(s) or more	10	12 ～ 25	12 ～ 25	54.5	55	20.01~50.00	25	1.5	0.25	0.21~0.40	+0.30/-0.30	1.19×10^-4	Standard Bore
-	1 Piece(s)	4 Day(s) or more	10	8	8	21	24.5	1.01~3.00	1.2	1	0.1	0.02~0.2	+0.20/-0.20	1.20×10^-6	Keywayed Bore d1, d2 side
-	1 Piece(s)	4 Day(s) or more	10	8 ～ 10	8 ～ 10	28	32	1.01~3.00	1.6	1.2	0.15	0.02~0.2	+0.20/-0.20	4.68×10^-6	Keywayed Bore d1, d2 side
-	1 Piece(s)	4 Day(s) or more	10	8 ～ 14	8 ～ 14	34	35	3.01~5.00	4	1.5	0.2	0.02~0.2	+0.20/-0.20	1.10×10^-5	Keywayed Bore d1, d2 side
-	1 Piece(s)	4 Day(s) or more	10	10 ～ 14	10 ～ 14	46	44	5.01~10.00	10	1.5	0.25	0.21~0.40	+0.30/-0.30	4.70×10^-5	Keywayed Bore d1, d2 side

Specifications/Overview

Keyway Dimension
	Shaft bore diameter d₁, d₂	b		t		Key Nominal Dim. b × h	Set Screw
	Shaft bore diameter d₁, d₂	Standard Dimensions	Tolerance	Standard Dimensions	Tolerance	Key Nominal Dim. b × h	Size	Tightening Torque (N⋅m)
	8·10	3	±0.0125	1.4	+0.1 0	3 × 3	M2	0.3
	12	4	±0.0150	1.8		4 × 4	M3	0.7
	14	5	±0.0150	2.3		5 × 5	M4	1.7

App. Example

Highly suitable for applications requiring high speeds and high positioning accuracies, such as ball screw drives.

Product TOP

Basic Information

Series Name	Disc	Application	For Servo Motors	Features	High Torsional Rigidity / High Torque Type / High Positioning Accuracy Type / Zero Backlash / Low Moment of Inertia / Clean Environment
Allowable Misalignment	Angular Misalignment / Eccentricity / Axial Misalignment	Max. Rotational Speed Range(r/min)	1001~2000	Product Category	Coupling Main Body
Max. Rotational Speed(r/min)	10000	Single/Double	Double

Configure

9 Part Numbers

View Part Numbers

Configure Remaining Specifications

Completed

Specification/Dimensions

Shaft Bore Dia. 1 d1 (or d)(Ø)
4

5

6

8

10

12

14

15

17

19

20

22

24

25
Clear
Shaft Bore Dia. 2 d2 (or d)(Ø)
4

5

6

8

10

12

14

15

17

19

20

22

24

25
Clear
O.D.(Ø)
21

28

34

46

54.5
Clear
Overall Length(mm)
24.5

32

35

44

55
Clear
Allowable Torque Range(N•m)
1.01~3.00

3.01~5.00

5.01~10.00

20.01~50.00
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
Allowable Lateral Misalignment Range(mm)
0.02~0.2

0.21~0.40
Clear
Shaft Bore Shape
Keywayed Bore d1, d2 side

Standard Bore
Clear
type
- SCXW
- SCXWK
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

4 Day(s) or Less
Clear

Specify Alterations

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

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Disc Couplings Servo - Fine, for Servo Motors (High Positioning Accuracy)

Specification Table

Part Number

Specifications/Overview

App. Example

Basic Information

Configure

Specification/Dimensions

Shaft Bore Dia. 1 d1 (or d)(Ø)

Shaft Bore Dia. 2 d2 (or d)(Ø)

O.D.(Ø)

Overall Length(mm)

Allowable Torque Range(N•m)

Allowable Torque(N•m)

Allowable Angular Misalignment(deg)

Allowable Lateral Misalignment(mm)

Allowable Lateral Misalignment Range(mm)

Shaft Bore Shape

type

CAD

Days to Ship

Specify Alterations

Additional Products in this Category

Complementary Products

Customers Who Viewed This Item Also Viewed

Tech Support

Payment Method

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