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Disc Type Coupling (SD Series) (SDWA-54-18K8X20)

SUNGIL

[Features]
・High torsional rigidity, excellent positioning power
・Used for high precision position control system
・Low moment of inertia
・Semi-permanent life
・Deflection, eccentricity accepted
・The characteristics of positive / reverse are the same
・Single disc, double disc type (can not accommodate eccentric type in case of single type)
•Related Keywords: Sungil Machinery, Standard Coupling, Coupling / Shaft Joint

Part Number

Configured Part Number is shown.

SDWA-54-18K8X20

Order Qty.

Check Price / Ship Date
Unit Price

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Total

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Ship Date

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Configured Specifications

Type	Disc Type	Shaft Hole Dia.(Already processed) d1(Ø)	18
Shaft Hole Dia.(Already processed) d2(Ø)	20	Outer Diameter D(Ø)	54
Full length L(mm)	55.5	Application	Servo Motor / Stepping Motor
Rated torque range(N•m)	20.01~50.00	Features	High accuracy / Backlash 0 / Small / Heat Resistant
Allowable Misalignment	Angular Misalignment / Eccentricity / Axial Misalignment	Max. Rotational Speed Range(r/min)	4001~10000
Body Material	Aluminum	Rated Torque(N•m)	22
Show More
Allowable Angular Misalignment(deg)	3	Allowable Lateral Misalignment(mm)	0.2
Product Category	Coupling body	Allowable Lateral Misalignment Range(mm)	0.21~0.40
Max. Rotational Speed(r/min)	7500	Buffer Material	Aluminum
Disc Material	Stainless Steel	Operating Temperature Range(°C)	-50～200
Allowable Axial Clearance (±)(mm)	0.5	Moment of Inertia(kg・m2)	6.7X10^-5
With or without Keyway	One Side Key Way	d1 Keyway symbol	K8
d1keyway width b1(mm)	8	d1Keyway height t1(mm)	3.3
d2 Keyway symbol	-	d2 keyway width b2(mm)	-
d2 keyway height t2(mm)	-	RoHS	10
Show Less

Download (PDF)

Catalog (2 page view)

Product TOP

: 30; 45; 60

Part Number
SDWA-54-18K8X20

Part Number	Standard Unit Price	Minimum order quantity	Volume Discount	Days to Ship	RoHS	Shaft Hole Dia.(Already processed) d1 (Ø)	Shaft Hole Dia.(Already processed) d2 (Ø)	Outer Diameter D (Ø)	Full length L (mm)	Application	Rated torque range (N•m)	Features	Allowable Misalignment	Max. Rotational Speed Range (r/min)	Body Material	Rated Torque (N•m)	Allowable Angular Misalignment (deg)	Allowable Lateral Misalignment (mm)	Product Category	Allowable Lateral Misalignment Range (mm)	Max. Rotational Speed (r/min)	Buffer Material	Allowable Axial Clearance (±) (mm)	Moment of Inertia (kg・m2)	With or without Keyway	d1 Keyway symbol	d1keyway width b1 (mm)	d1Keyway height t1 (mm)	d2 Keyway symbol	d2 keyway width b2 (mm)	d2 keyway height t2 (mm)
	SGD 76.40	1 Piece(s)		10 Day(s) or more	10	18	20	54	55.5	Servo Motor / Stepping Motor	20.01~50.00	High accuracy / Backlash 0 / Small / Heat Resistant	Angular Misalignment / Eccentricity / Axial Misalignment	4001~10000	Aluminum	22	3	0.2	Coupling body	0.21~0.40	7500	Aluminum	0.5	6.7X10^-5	One Side Key Way	K8	8	3.3	-	-	-

Part Number

Part Number	Standard Unit Price	Minimum order quantity	Volume Discount	Days to Ship	RoHS	Shaft Hole Dia.(Already processed) d1 (Ø)	Shaft Hole Dia.(Already processed) d2 (Ø)	Outer Diameter D (Ø)	Full length L (mm)	Application	Rated torque range (N•m)	Features	Allowable Misalignment	Max. Rotational Speed Range (r/min)	Body Material	Rated Torque (N•m)	Allowable Angular Misalignment (deg)	Allowable Lateral Misalignment (mm)	Product Category	Allowable Lateral Misalignment Range (mm)	Max. Rotational Speed (r/min)	Buffer Material	Allowable Axial Clearance (±) (mm)	Moment of Inertia (kg・m2)	With or without Keyway	d1 Keyway symbol	d1keyway width b1 (mm)	d1Keyway height t1 (mm)	d2 Keyway symbol	d2 keyway width b2 (mm)	d2 keyway height t2 (mm)

Basic Information

Type	Disc Type	Disc Material	Stainless Steel	Operating Temperature Range(°C)	-50::200

Please check the type/dimensions/specifications of the part SDWA-54-18K8X20 in the Disc Type Coupling (SD Series) series.

Configure

Completed

Specification/Dimensions

Application
- Servo Motor
- Stepping Motor
- Encoder
Clear
Features
Standard (Do not input)

High accuracy

Backlash 0

Small

Heat Resistant

Clean circumstance

Vacuum Environment
Clear
Allowable Misalignment
- Angular Misalignment
- Eccentricity
- Axial Misalignment
Clear
d2 Keyway symbol
K2

K3

K4

K5

K6

K7

K8

K9

K10

K12

K14

K16

K18
Clear
d2 keyway width b2(mm)
2

3

4

5

6

7

8

9

10

12

14

16

18
Clear
d2 keyway height t2(mm)
1

1.4

1.8

2.3

2.8

3

3.3

3.8

4.3

4.4
Clear
type
- SDA
- SDA-22
- SDA-22C
- SDA-26
- SDA-26C
- SDA-31
- SDA-31C
- SDA-39C
- SDA-64
- SDA-64C
- SDA-80C
- SDAA-42
- SDAA-42C
- SDAA-47
- SDAA-47C
- SDAA-54
- SDAA-54C
- SDAB-42
- SDAB-42C
- SDAB-47
- SDAB-47C
- SDAB-54
- SDAB-54C
- SDCS-42C
- SDCS-47C
- SDCS-54C
- SDS-16
- SDS-19
- SDS-22
- SDS-26
- SDS-31
- SDS-42
- SDS-47
- SDS-54
- SDS-64
- SDW-100C
- SDW-80C
- SDW-90C
- SDWA-16
- SDWA-16C
- SDWA-19
- SDWA-19C
- SDWA-22
- SDWA-22C
- SDWA-26
- SDWA-26C
- SDWA-31
- SDWA-31C
- SDWA-39C
- SDWA-42
- SDWA-42C
- SDWA-47
- SDWA-47C
- SDWA-54
- SDWA-54C
- SDWA-64
- SDWA-64C
- SDWB-16
- SDWB-16C
- SDWB-19
- SDWB-19C
- SDWB-22
- SDWB-22C
- SDWB-31
- SDWB-31C
- SDWB-42
- SDWB-42C
- SDWB-47
- SDWB-47C
- SDWB-54C
- SDWC-39C
- SDWC-42C
- SDWC-47C
- SDWC-54C
Clear
Shaft Hole Dia.(Already processed) d1(Ø)
3

4

4.5

5

6

6.35

7

8

9

9.525

10

11

12

12.7

14

15

15.875

16

17

18

19

20

21

22

24

25

26

28

30

32

35

40

45

50
Clear
Shaft Hole Dia.(Already processed) d2(Ø)
3

4

4.5

5

6

6.35

7

8

9

9.525

10

11

12

12.7

14

15

15.875

16

17

18

19

20

21

22

24

25

26

28

30

32

35

40

45

50
Clear
Outer Diameter D(Ø)
16

19

22.2

26.6

31.8

39

42.5

47

54

64

80

94.5

104.5
Clear
Full length L(mm)
11.9

14

14.7

15.6

17.5

17.6

18

20

21

22.2

23

24.5

25

26

26.2

27

28.3

29.5

31

31.4

31.5

31.7

32.6

33

33.5

35.6

36.1

38.5

39

39.7

40

42

42.2

44.2

44.7

44.8

45.5

46

50

51.3

52

55.5

56.2

58

58.5

60.5

63.7

71

74

75.6

82.5

85

89.5

89.9

90.5

98

98.5

102.5
Clear
Rated torque range(N•m)
0.05~1.00

1.01~3.00

3.01~5.00

5.01~10.00

20.01~50.00

50.01~100.00

100～Less than 500
Clear
Max. Rotational Speed Range(r/min)
4001~10000

10001~78000
Clear
Body Material
- Aluminum
- Aluminum
Clear
Rated Torque(N•m)
0.5

0.9

1.1

1.5

3

5

6

10

22

31

75

150

220
Clear
Allowable Angular Misalignment(deg)
1

1.5

2

3
Clear
Allowable Lateral Misalignment(mm)
0

0.12

0.15

0.2

0.3

0.4

0.5

0.7

0.8
Clear
Product Category
- Coupling body
Clear
Allowable Lateral Misalignment Range(mm)
0.02~0.2

0.21~0.40

0.41~1.0
Clear
Max. Rotational Speed(r/min)
6000

6500

7000

7500

8000

8500

9000

10000

12000

14000

16000
Clear
Buffer Material
- Aluminum
- Others
  - Others
Clear
With or without Keyway
- Both key grooves
- Both sides keyway
- Key Seat Exist
- Key Seat Not Exist
- No Keyway
- One Side Key Seat
- One Side Key Way
- With Keyway
Clear
d1 Keyway symbol
K2

K3

K4

K5

K6

K7

K8

K9

K10

K12

K14

K16

K18
Clear
d1keyway width b1(mm)
2

3

4

5

6

7

8

9

10

12

14

16

18
Clear
d1Keyway height t1(mm)
1

1.4

1.8

2.3

2.8

3

3.3

3.8

4.3

4.4
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

4 Day(s) or Less

6 Day(s) or Less

7 Day(s) or Less

9 Day(s) or Less

10 Day(s) or Less

11 Day(s) or Less

12 Day(s) or Less

13 Day(s) or Less

15 Day(s) or Less

33 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 .

Similar Part Numbers

Part Number
SDA-22-3X5
SDA-22-3X5K2
SDA-22-3X6
SDWA-54-18K8X20K6
SDWA-54-18K8X20K7
SDWA-54-18K8X20K8

Standard Unit Price	Minimum order quantity	Days to Ship	RoHS	Shaft Hole Dia.(Already processed) d1 (Ø)	Shaft Hole Dia.(Already processed) d2 (Ø)	Outer Diameter D (Ø)	Full length L (mm)	Application	Rated torque range (N•m)	Features	Allowable Misalignment	Max. Rotational Speed Range (r/min)	Body Material	Rated Torque (N•m)	Allowable Angular Misalignment (deg)	Allowable Lateral Misalignment (mm)	Product Category	Allowable Lateral Misalignment Range (mm)	Max. Rotational Speed (r/min)	Buffer Material	Allowable Axial Clearance (±) (mm)	Moment of Inertia (kg・m2)	With or without Keyway	d1 Keyway symbol	d1keyway width b1 (mm)	d1Keyway height t1 (mm)	d2 Keyway symbol	d2 keyway width b2 (mm)	d2 keyway height t2 (mm)
SGD 27.41	1 Piece(s)	9 Day(s) or more	10	3	5	22.2	28.3	Servo Motor / Stepping Motor	-	High accuracy / Backlash 0 / Small	-	-	Aluminum	1.1	1.5	0.12	-	-	12000	-	0.2	1.3X10^-6	Key Seat Exist	-	-	-	-	-	-
SGD 29.64	1 Piece(s)	10 Day(s) or more	10	3	5	22.2	28.3	Servo Motor / Stepping Motor	-	High accuracy / Backlash 0 / Small	-	-	Aluminum	1.1	1.5	0.12	-	-	12000	-	0.2	1.3X10^-6	One Side Key Seat	-	-	-	K2	2	1
SGD 27.41	1 Piece(s)	9 Day(s) or more	10	3	6	22.2	28.3	Servo Motor / Stepping Motor	-	High accuracy / Backlash 0 / Small	-	-	Aluminum	1.1	1.5	0.12	-	-	12000	-	0.2	1.3X10^-6	Key Seat Exist	-	-	-	-	-	-
SGD 79.79	1 Piece(s)	10 Day(s) or more	10	18	20	54	55.5	Servo Motor / Stepping Motor	20.01~50.00	High accuracy / Backlash 0 / Small / Heat Resistant	Angular Misalignment / Eccentricity / Axial Misalignment	4001~10000	Aluminum	22	3	0.2	Coupling body	0.21~0.40	7500	Aluminum	0.5	6.7X10^-5	Both sides keyway	K8	8	3.3	K6	6	2.8
SGD 79.79	1 Piece(s)	10 Day(s) or more	10	18	20	54	55.5	Servo Motor / Stepping Motor	20.01~50.00	High accuracy / Backlash 0 / Small / Heat Resistant	Angular Misalignment / Eccentricity / Axial Misalignment	4001~10000	Aluminum	22	3	0.2	Coupling body	0.21~0.40	7500	Aluminum	0.5	6.7X10^-5	Both sides keyway	K8	8	3.3	K7	7	3
SGD 79.79	1 Piece(s)	10 Day(s) or more	10	18	20	54	55.5	Servo Motor / Stepping Motor	20.01~50.00	High accuracy / Backlash 0 / Small / Heat Resistant	Angular Misalignment / Eccentricity / Axial Misalignment	4001~10000	Aluminum	22	3	0.2	Coupling body	0.21~0.40	7500	Aluminum	0.5	6.7X10^-5	Both sides keyway	K8	8	3.3	K8	8	3.3

Part Number

Part Number	Standard Unit Price	Minimum order quantity	Volume Discount	Days to Ship	RoHS	Shaft Hole Dia.(Already processed) d1 (Ø)	Shaft Hole Dia.(Already processed) d2 (Ø)	Outer Diameter D (Ø)	Full length L (mm)	Application	Rated torque range (N•m)	Features	Allowable Misalignment	Max. Rotational Speed Range (r/min)	Body Material	Rated Torque (N•m)	Allowable Angular Misalignment (deg)	Allowable Lateral Misalignment (mm)	Product Category	Allowable Lateral Misalignment Range (mm)	Max. Rotational Speed (r/min)	Buffer Material	Allowable Axial Clearance (±) (mm)	Moment of Inertia (kg・m2)	With or without Keyway	d1 Keyway symbol	d1keyway width b1 (mm)	d1Keyway height t1 (mm)	d2 Keyway symbol	d2 keyway width b2 (mm)	d2 keyway height t2 (mm)

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Disc Type Coupling (SD Series) (SDWA-54-18K8X20)

Configured Specifications

2D/3D CAD ?

2D CAD Data with Dim. Fixed

Basic Information

Configure

Specification/Dimensions

Application

Features

Allowable Misalignment

d2 Keyway symbol

d2 keyway width b2(mm)

d2 keyway height t2(mm)

type

Shaft Hole Dia.(Already processed) d1(Ø)

Shaft Hole Dia.(Already processed) d2(Ø)

Outer Diameter D(Ø)

Full length L(mm)

Rated torque range(N•m)

Max. Rotational Speed Range(r/min)

Body Material

Rated Torque(N•m)

Allowable Angular Misalignment(deg)

Allowable Lateral Misalignment(mm)

Product Category

Allowable Lateral Misalignment Range(mm)

Max. Rotational Speed(r/min)

Buffer Material

With or without Keyway

d1 Keyway symbol

d1keyway width b1(mm)

d1Keyway height t1(mm)

CAD