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Carbon Steel High Rigidity Single/Double Disc Coupling, Clamping Type

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This is an economy item, The price is cheaper than the MISUMI standard product.

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Product Overview

High-rigidity flexible coupling designed with a unique disc fastening section.
[Features]
· 12 models for shaft diameters from ⌀8 (8 mm) to ⌀45 (45 mm), with 45 standardized sizes.
- The unique design of the disc fastening section provides high torsional rigidity.
· Allows angular misalignment and end play.
· Low moment of inertia.
[Applications]
· Machine tools, precision platforms, etc.

Dimensional Drawing

Material specifications

Type	Disc Type	Body		Disc	Accessories
		Material	Surface Treatment	Material
E-LDBJ06-D	Single disc type	S45C	Magnetite protective film	SUS304	Locking bolt Set screw
E-LDBJ16-D	Double disc type

Specification Table

Please follow the selection steps

, choose the type and parameters, and then place your order. Please specify the shaft bore diameter within the range of d₁ ≤ d₂.

Type (Type·D)	-	d₁	-	d₂
E-LDBJ06-D65	-	18	-	30
E-LDBJ16-D87	-	20	-	30

Type		d₁ and d₂ selection (but d₁ ≤ d₂)																									L	LF	F	A
Type	D	d₁ and d₂ selection (but d₁ ≤ d₂)																									L	LF	F	A
E-LDBJ06-D Single disc type	39	8	9	10	11	12	12.7	14	15	16		18	19														34.5	15	5	13
	44	8	9	10	11	12	12.7	14	15	16		18		20	22	24											34.5	15	5	15.5
	56			10		12	12.7	14	15	16		18	19	20	22	24	25	28	30								45	19.85	6.4	21
	65					12		14	15	16		18	19	20	22	24	25	28	30	32	35						55.5	24.9	7.7	24.5
	87										17	18	19	20	22	24	25	28	30	32	35	38	40	42			67	29.25	9.7	33
	94												19	20	22	24	25	28	30	32	35	38	40	42	44	45	68	29.25	10.5	35

Type		d₁ and d₂ selection (but d₁ ≤ d₂)																									L	LF	F	LP	A
Type	D	d₁ and d₂ selection (but d₁ ≤ d₂)																									L	LF	F	LP	A
E-LDBJ16-D Double disc type	39	8	9	10	11	12	12.7	14	15	16		18	19														50	15	5	11	13
	44	8	9	10	11	12	12.7	14	15	16		18		20	22	24											50	15	5	11	15.5
	56			10		12	12.7	14	15	16		18		20	22	24	25	28	30								64	19.85	6.4	13.7	21
	65					12		14	15	16		18	19	20	22	24	25		30	32	35						77	24.9	7.7	15.8	25
	87										17	18	19	20	22	24	25	28	30	32	35	38	40	42			94	29.25	9.7	18.5	33
	94												19	20	22	24	25	28	30	32	35	38	40	42	44	45	98	29.25	10.5	20.5	35

Type		Permissible torque (N⋅m)	Allowable eccentricity mm	Allowable angular misalignment (°)	Allowable axial misalignment mm	Allowable rotational speed RPM	Static torsional stiffness N⋅m/rad	Moment of inertia N⋅m	Clamping bolt		Weight (g)
Type	D	Permissible torque (N⋅m)	Allowable eccentricity mm	Allowable angular misalignment (°)	Allowable axial misalignment mm	Allowable rotational speed RPM	Static torsional stiffness N⋅m/rad	Moment of inertia N⋅m	M	Locking torque N.m	Weight (g)
E-LDBJ06-D Single disc type	39	14	0.02	0.5	±0.23	5000	4000	3.3x10^ˉ5	M4	3.5	200
	44	18	0.02	0.5	±0.27	5000	4600	4.2x10^ˉ5	M4	3.5	250
	56	50	0.02	0.5	±0.30	5000	22400	1.2x10^ˉ4	M5	8	580
	65	120	0.02	0.5	±0.30	5000	33600	1.5x10^ˉ4	M6	13	850
	87	230	0.02	0.5	±0.30	4000	78000	5.0x10^ˉ4	M8	28	1760
	94	385.6	0.02	0.5	±0.30	4000	89000	2.3x10^ˉ3	M10	55	1890

Type		Permissible torque (N⋅m)	Allowable eccentricity mm	Allowable angular misalignment (°)	Allowable axial misalignment mm	Allowable rotational speed RPM	Static torsional stiffness N⋅m/rad	Moment of inertia N⋅m	Clamping bolt		Weight (g)
Type	D	Permissible torque (N⋅m)	Allowable eccentricity mm	Allowable angular misalignment (°)	Allowable axial misalignment mm	Allowable rotational speed RPM	Static torsional stiffness N⋅m/rad	Moment of inertia N⋅m	M	Locking torque N.m	Weight (g)
E-LDBJ16-D Double disc type	39	14	0.1	1	±0.46	5000	2000	4.5x10^ˉ5	M4	3.5	300
	44	18	0.1	1	±0.54	5000	2300	5.7x10^ˉ5	M4	3.5	380
	56	50	0.2	1	±0.60	5000	11200	2.1x10^ˉ5	M5	8	835
	65	120	0.2	1	±0.60	5000	16800	2.3x10^ˉ4	M6	13	1235
	87	230	0.2	1	±0.60	4000	39000	5.5x10^ˉ4	M8	28	2600
	94	385.6	0.2	1	±0.60	4000	44500	2.5x10^ˉ3	M10	55	2900

Additional Machining

Shaft Bore Diameter d₁·d₂	b (Keyway Width)		t Keyway Depth	Key Nominal Size b x h
Shaft Bore Diameter d₁·d₂	LK	RK	t Keyway Depth	Key Nominal Size b x h
8–10	3	3	1.4	3 × 3
11–12	4	4	1.8	4 × 4
12.7 to 17	5	5	2.3	5 × 5
18–22	6	6	2.8	6 × 6
24–30	8	8	3.3	8 × 7
32–38	10	10	3.3	10 × 8
39–44	12	12	3.3	12 × 8
45–50	14	14	3.8	14 × 9

When the shaft bore of the 39 outer diameter is 18 or 19, it is not possible to additionally machine a keyway.

When the shaft bore of the 44 outer diameter is 22 or 24, it is not possible to additionally machine a keyway.

Product Features

You can freely choose the connection type during assembly, with a maximum applicable torque of up to 385.6 N⋅m.

Precautions

The values of static torsional rigidity, moment of inertia, and weight are given for the maximum shaft diameter.

Eccentricity, angular deviation, and axial amplitude are all individual allowable values. If multiple types of deviations occur at the same time, the allowable value for each deviation is reduced to half of the original value.

For selection criteria and calibration adjustment, please refer to

P.788·789.

Eccentricity is not allowed for single disc type.

Example of Use

Part Number

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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
E-LDBJ06-D39-[8,9,10,11,12,12.7,14,15,16,18,19]-[8,9,10,11,12,12.7,14,15,16,18,19]
E-LDBJ06-D44-[8,9,10,11,12,12.7,14,15,16,18,20,22,24]-[8,9,10,11,12,12.7,14,15,16,18,20,22,24]
E-LDBJ06-D56-[10,12,12.7,14,15,16,18,19,20,22,24,25,28,30]-[10,12,12.7,14,15,16,18,19,20,22,24,25,28,30]
E-LDBJ06-D65-[12,14,15,16,18,19,20,22,24,25,30,32,35]-[12,14,15,16,18,19,20,22,24,25,30,32,35]
E-LDBJ06-D87-[17,18,19,20,22,24,25,28,30,32,35,38,40,42]-[17,18,19,20,22,24,25,28,30,32,35,38,40,42]
E-LDBJ06-D94-[19,20,22,24,25,28,30,32,35,38,40,42,44,45]-[19,20,22,24,25,28,30,32,35,38,40,42,44,45]
E-LDBJ16-D39-[8,9,10,11,12,12.7,14,15,16,18,19]-[8,9,10,11,12,12.7,14,15,16,18,19]
E-LDBJ16-D44-[8,9,10,11,12,12.7,14,15,16,18,20,22,24]-[8,9,10,11,12,12.7,14,15,16,18,20,22,24]
E-LDBJ16-D56-[10,12,12.7,14,15,16,18,19,20,22,24,25,28,30]-[10,12,12.7,14,15,16,18,19,20,22,24,25,28,30]
E-LDBJ16-D65-[12,14,15,16,18,19,20,22,24,25,30,32,35]-[12,14,15,16,18,19,20,22,24,25,30,32,35]
E-LDBJ16-D87-[17,18,19,20,22,24,25,28,30,32,35,38,40,42]-[17,18,19,20,22,24,25,28,30,32,35,38,40,42]
E-LDBJ16-D94-[19,20,22,24,25,28,30,32,35,38,40,42,44,45]-[19,20,22,24,25,28,30,32,35,38,40,42,44,45]

Standard Unit Price	Minimum order quantity	Days to Ship	Shaft Bore Dia.1 d1 (or d) (Ø)	Shaft Bore Dia. 2 d2 (or d) (Ø)	O.D. (Ø)	Overall Length (mm)	Allowable Torque (N•m)	Allowable Angular Misalignment (deg)	Allowable Lateral Misalignment (mm)	Max. Rotational Speed (r/min)	Allowable Axial Misalignment (mm)	Moment of Inertia (kg・m2)	Single/Double
-	1 Piece(s)	10 Day(s)	8 ～ 19	8 ～ 19	39	34.5	14	0.5	0.02	5000	±0.23	3.3×10^-5	Single
-	1 Piece(s)	10 Day(s)	8 ～ 24	8 ～ 24	44	34.5	18	0.5	0.02	5000	±0.27	4.2×10^-5	Single
-	1 Piece(s)	10 Day(s)	10 ～ 30	10 ～ 30	56	45	50	0.5	0.02	5000	±0.30	1.2×10^-5	Single
-	1 Piece(s)	10 Day(s)	12 ～ 35	12 ～ 35	65	55.5	120	0.5	0.02	5000	±0.30	1.5×10^-4	Single
-	1 Piece(s)	10 Day(s)	17 ～ 42	17 ～ 42	87	67	230	0.5	0.02	4000	±0.30	5.0×10^-4	Single
-	1 Piece(s)	10 Day(s)	19 ～ 45	19 ～ 45	94	68	385.6	0.5	0.02	4000	±0.30	2.3×10^-3	Single
-	1 Piece(s)	10 Day(s)	8 ～ 19	8 ～ 19	39	50	14	1	0.1	5000	±0.46	4.5×10^-5	Double
-	1 Piece(s)	10 Day(s)	8 ～ 24	8 ～ 24	44	50	18	1	0.1	5000	±0.54	5.7×10^-5	Double
-	1 Piece(s)	10 Day(s)	10 ～ 30	10 ～ 30	56	64	50	1	0.2	5000	±0.6	2.1×10^-5	Double
-	1 Piece(s)	10 Day(s)	12 ～ 35	12 ～ 35	65	77	120	1	0.2	5000	±0.6	2.3×10^-4	Double
-	1 Piece(s)	10 Day(s)	17 ～ 42	17 ～ 42	87	94	230	1	0.2	4000	±0.6	5.5×10^-4	Double
-	1 Piece(s)	10 Day(s)	19 ～ 45	19 ～ 45	94	98	385.6	1	0.2	4000	±0.6	2.5×10^-3	Double

Basic Information

Series Name	Disc	Application	For Servo Motors / Stepping Motor	Features	High Torsional Rigidity / High Torque Type / Zero Backlash
Body Material	Steel	Product Category	Coupling Main Body	Disc Material	Stainless Steel
Shaft Hole Shape	Both Sides Clamping	Shaft Tightening Method	Fastening Bolt

Configure

12 Part Numbers

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Configure Remaining Specifications

Completed

Specification/Dimensions

Shaft Bore Dia.1 d1 (or d)(Ø)
8

9

10

11

12

12.7

14

15

16

17

18

19

20

22

24

25

28

30

32

35

38

40

42

44

45
Clear
Shaft Bore Dia. 2 d2 (or d)(Ø)
8

9

10

11

12

12.7

14

15

16

17

18

19

20

22

24

25

28

30

32

35

38

40

42

44

45
Clear
O.D.(Ø)
39

44

56

65

87

94
Clear
Overall Length(mm)
34.5

45

50

55.5

64

67

68

77

94

98
Clear
Allowable Torque(N•m)
14

18

50

120

230

385.6
Clear
Allowable Angular Misalignment(deg)
0.5

1
Clear
Allowable Lateral Misalignment(mm)
0.02

0.1

0.2
Clear
Max. Rotational Speed(r/min)
4000

5000
Clear
Single/Double
- Double
- Single
Clear
type
- E-LDBJ
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

10 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 .

Frequently asked question (FAQ)

Question: What material options are available for the product?: Answer: Made of stainless steel and aluminum alloy with anodized surface treatment.
Question: Is there a selection guide provided for the bore sizes at both ends of the product?: Answer: d1, d2 same diameter = d1 + 0.5; d2 different diameter = larger bore diameter + 0.5
· When d1 is 4 or less and d2 is 5 or more, there are 3 set screws.
· When both d1 and d2 are less than 4, there are 2 set screws.
Question: How does the product achieve suitability for eccentricity and angular misalignment in its design?: Answer: The leaf spring formed by the slit allows for eccentricity, angular misalignment, and end play.
Question: Which mechanical components is the product suitable for?: Answer: With zero backlash, it is suitable for applications requiring rotational accuracy.
Question: What are the requirements for the product's application in terms of eccentricity and angular misalignment?: Answer: Eccentricity, angular misalignment, and axial amplitude are all individual allowable values. If multiple types of deviations occur at the same time, the allowable value for each deviation is reduced to half of the original value.

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Carbon Steel High Rigidity Single/Double Disc Coupling, Clamping Type

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Shaft Bore Dia. 2 d2 (or d)(Ø)

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Overall Length(mm)

Allowable Torque(N•m)

Allowable Angular Misalignment(deg)

Allowable Lateral Misalignment(mm)

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