A coupling is a part that connects two different rotating bodies (motor shaft, ball screw, etc.) and aims at transmitting torque. The load of assembly adjustment is reduced by absorbing the axis deviation (lateral misalignment, angular misalignment and axial amplitude) between rotating bodies. And in case of accidental overload, the coupling is destroyed and the rotating bodies are disconnected to protect the expensive power part and the whole device.

Is there any reference available for lateral misalignment and angular misalignment of the product?

Lateral misalignment, angular misalignment and axial amplitude are all single allowable values. If there are multiple deviations at the same time, the allowable value of each deviation will be reduced to 1/2 of the original value.

What are the product features?

The middle of the coupling is connected with a cross slider, which can be disassembled freely. Large radial and angular deviations are allowed.

Is there a keyway machining for the inner hole of the product?

Additional keyways can be machined on the product body. Please refer to MISUMI manual and website.

Do I need to assemble the product myself when it arrives?

The products are shipped from different places and may arrive in bulk, so please just put them together yourself.

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Notice of End of Sales for Economy Series Pneumatic Equipment Category. More information.

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Part Number Complete

E-LMPO16L18-[4,5,6,6.35,7,8]-[4,5,6,6.35,7,8]

Shaft Bore Dia.1 d1 (or d) Shaft Bore Dia. 2 d2 (or d) O.D. Overall Length Allowable Torque Allowable Lateral Misalignment Max. Rotational Speed type Days to Ship

Specification/Dimensions

Shaft Bore Dia.1 d1 (or d)(Ø)
4

5

6

6.35

7

8

9

9.525

10

11

12

12.7

14

15

16

17

18

19

20

22

24

25

28

30

32
Clear
Shaft Bore Dia. 2 d2 (or d)(Ø)
4

5

6

6.35

7

8

9

9.525

10

11

12

12.7

14

15

16

17

18

19

20

22

24

25

28

30

32
Clear
O.D.(Ø)
16

25

32

40

44

50

55

63
Clear
Overall Length(mm)
18

28

32

33

38

46

47

57
Clear
Allowable Torque(N•m)
0.7

2

4.5

9

12

19

22

33
Clear
Allowable Lateral Misalignment(mm)
0.8

1.6

2

2.4

2.6

2.8

3

3.3
Clear
Max. Rotational Speed(r/min)
2500

2800

3000

3500

3600

4800

6000

9000
Clear
type
- E-LMPO
Clear

Days to Ship

All

11 Day(s) or Less

17 Day(s) or Less
Clear

Specify Alterations

Oldham Couplings Set Screw Type

Name: Oldham Couplings Set Screw Type
Brand: MISUMI
Availability: PreOrder

Check FAQ of this product (5 items)

Brand :

MISUMI

MiSUMi Economy

MISUMI

Part Number :

E-LMPO16L18-[4,5,6,6.35,7,8]-[4,5,6,6.35,7,8]

Order Qty :
Price :

---
Total Price :

---
Days to ship :

---

Select part number to Order Now/ Add to Cart

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Product Description

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

Product Overview of Flexible Shaft Couplings

・Characteristic of Flexible Shaft Couplings
Flexible Shaft Couplings is a part of which purpose is to connect two different rotating bodies (motor shaft, ball screw, etc.) and transmit torque.
Protects equipment by absorbing axial deviations (eccentricity, declination, and axial amplitude) that occur between rotating bodies.
In the event of an overload, the Flexible Shaft Couplings is first damaged and the connection is released to protect the power unit and the entire device.

Dimensional Drawing of Flexible Shaft Couplings

Material table of Flexible Shaft Couplings

Part	Material of Flexible Shaft Couplings	Surface Treatment	Accessory

Hub	Aluminum Alloy	Clear Anodize	Set Screw
Spacer	PA66	-

Specification Table of Flexible Shaft Couplings

Please follow the selection steps Flexible Shaft Couplings

～

to select the part no. Please specify the shaft hole diameterwithin the range of d1≤d2.

Part No.(Type of Flexible Shaft Couplings·DL)	-	d₁	-	d₂
E-LMPO20L25	-	5	-	8
E-LMPO40L32	-	10	-	18

Part No.			d₁、d₂Flexible Shaft Couplings Dia.(d₁≤d₂)
Type of Flexible Shaft Couplings	D	L	d₁、d₂Flexible Shaft Couplings Dia.(d₁≤d₂)
E-LMPO	16	L18	4	5	6	6.35	7	8
	20	L25		5	6	6.35		8	9	9.525	10
	25	L28		5	6			8	9	9.525	10	11	12		14
	32	L33		5	6			8	9	9.525	10	11	12	12.7	14	15	16
	40	L32						8	9	9.525	10	11	12	12.7	14	15	16	17	18	19	20
	44	L46						8	9	9.525	10	11	12	12.7	14	15	16	17	18	19	20	22
	50	L38									10		12	12.7	14	15	16	17	18	19	20	22	24	25
	55	L57									10		12	12.7	14	15	16	17	18	19	20	22	24	25	28	30	32
	63	L47													14	15	16	17	18	19	20	22	24	25	28	30	32
	70	L77															16	17	18	19	20	22	24	25	28	30	32	35	38	40

If the slip torque is less than the allowable torque, use it below the slip torque.

Part No.			F	Set Screw		Rated Torque (N·m)	Mass (g)
Type of Flexible Shaft Couplings	D	L	F	M	Tightening torque N.m	Rated Torque (N·m)	Mass (g)
E-LMPO	16	L18	3	M3	0.7	0.7	6
	20	L25	3	M3	0.7	1.2	18
	25	L28	2.8	M4	1.7	2	25
	32	L33	3.4	M4	1.7	4.5	44
	40	L32	3.2	M4	1.7	9	81
	44	L46	3.5	M5	4	12	136
	50	L38	3.8	M5	4	19	142
	55	L57	7.8	M5	4	22	255
	63	L47	6	M6	7	33	320
	70	L77	13.5	M8	15	56	445

Alterations of Flexible Shaft Couplings

Flexible Shaft Couplings Dia d₁ · d₂	b(Keyway Width)		t Keyway Depth	Keyway Nominal Dim. b X h
Flexible Shaft Couplings Dia d₁ · d₂	LK	RK	t Keyway Depth	Keyway Nominal Dim. b X h
8～10	3	3	1.4	3x3
11～12	4	4	1.8	4x4
13～17	5	5	2.3	5x5
18～22	6	6	2.8	6x6
23～30	8	8	3.3	8x7
31～38	10	10	3.3	10x8
39～44	12	12	3.3	12x8

Product Features of Flexible Shaft Couplings

By connecting a cross spacer in the middle of the Flexible Shaft Couplings, it can be freely disassembled and installed.
The spacer uses PA66 and has excellent wear resistance, corrosion resistance, and electrical insulation.
The sliding design compensates for radial and angular deviations more effectively.

Example Use of Flexible Shaft Couplings

Precaution of Flexible Shaft Couplings

Operating Temperature of Flexible Shaft Couplings: －20℃～80℃. d₁、d₂
Eccentricity, declination angle and axial amplitude are all allowable values of a single term. If multiple deviations occur at the same time, the allowable value of each deviation is reduced to 1/2 of the original value.

: 30; 45; 60

Part Number
E-LMPO16L18-[4,5,6,6.35,7,8]-[4,5,6,6.35,7,8]
E-LMPO25L28-[5,6,6.35,8,9,9.525,10,11,12,14]-[5,6,6.35,8,9,9.525,10,11,12,14]
E-LMPO32L33-[5,6,8,9,9.525,10,11,12,14,15,16]-[5,6,8,9,9.525,10,11,12,14,15,16]
E-LMPO40L32-[8,9,9.525,10,11,12,12.7,14,15,16,17,18,19,20]-[8,9,9.525,10,11,12,12.7,14,15,16,17,18,19,20]
E-LMPO44L46-[8,9,9.525,10,11,12,12.7,14,15,16,17,18,19,20,22]-[8,9,9.525,10,11,12,12.7,14,15,16,17,18,19,20,22]
E-LMPO50L38-[10,12,12.7,14,15,16,17,18,19,20,22,24,25]-[10,12,12.7,14,15,16,17,18,19,20,22,24,25]
E-LMPO55L57-[10,12,12.7,14,15,16,17,18,19,20,22,24,25,28,30,32]-[10,12,12.7,14,15,16,17,18,19,20,22,24,25,28,30,32]
E-LMPO63L47-[14,15,16,17,18,19,20,22,24,25,28,30,32]-[14,15,16,17,18,19,20,22,24,25,28,30,32]

Price	Minimum Order Qty.	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 (N•m)	Allowable Lateral Misalignment (mm)	Max. Rotational Speed (r/min)	Moment of Inertia (kg･m²)
-	1 Piece(s)	11 Day(s)	10	4 ～ 8	4 ～ 8	16	18	0.7	0.8	9000	3.0×10^-7
-	1 Piece(s)	11 Day(s)	10	5 ～ 14	5 ～ 14	25	28	2	1.6	6000	2.8×10^-6
-	1 Piece(s)	11 Day(s)	10	5 ～ 16	5 ～ 16	32	33	4.5	2	4800	8.9×10^-5
-	1 Piece(s)	11 Day(s)	10	8 ～ 20	8 ～ 20	40	32	9	2.4	3600	2.1×10^-5
-	1 Piece(s)	11 Day(s)	10	8 ～ 22	8 ～ 22	44	46	12	2.8	3500	3.8×10^-5
-	1 Piece(s)	11 Day(s)	10	10 ～ 25	10 ～ 25	50	38	19	2.6	3000	6×10^-5
-	1 Piece(s)	11 Day(s)	10	10 ～ 32	10 ～ 32	55	57	22	3.3	2800	9.9×10^-5
-	1 Piece(s)	17 Day(s)	10	14 ～ 32	14 ～ 32	63	47	33	3	2500	2.1×10^-4

Basic Information

Series Name	Oldham	Application	Standard / For Servo Motors / Stepping Motor	Features	High Torsional Rigidity / High Torque Type
Body Material	Aluminum Alloy	Allowable Angular Misalignment(deg)	3	Product Category	Coupling Main Body
Buffer Material	Nylon	Allowable Axial Misalignment(mm)	±0.2	Shaft Tightening Method	Set Screw
Shaft Hole Shape	Standard	Spacer Material	PA66

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 is a coupling?: Answer: A coupling is a part that connects two different rotating bodies (motor shaft, ball screw, etc.) and aims at transmitting torque. The load of assembly adjustment is reduced by absorbing the axis deviation (lateral misalignment, angular misalignment and axial amplitude) between rotating bodies. And in case of accidental overload, the coupling is destroyed and the rotating bodies are disconnected to protect the expensive power part and the whole device.
Question: Is there any reference available for lateral misalignment and angular misalignment of the product?: Answer: Lateral misalignment, angular misalignment and axial amplitude are all single allowable values. If there are multiple deviations at the same time, the allowable value of each deviation will be reduced to 1/2 of the original value.
Question: What are the product features?: Answer: The middle of the coupling is connected with a cross slider, which can be disassembled freely. Large radial and angular deviations are allowed.
Question: Is there a keyway machining for the inner hole of the product?: Answer: Additional keyways can be machined on the product body. Please refer to MISUMI manual and website.
Question: Do I need to assemble the product myself when it arrives?: Answer: The products are shipped from different places and may arrive in bulk, so please just put them together yourself.

Check other FAQ (2 items) Hide

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