beam coupling

Most couplings can be divided into one of two types, rigid and flexible. Rigid couplings are used for applications that require proper alignment, while flexible couplings, such as beam couplings, are suitable for applications where there is some acceptable misalignment.

Beam couplings, sometimes called screw couplings, are made from a piece of material that is made flexible by removing material in a helical pattern along its length. Like all couplings, the purpose of beam couplings is to transfer torque between two shafts, but unlike rigid couplings, beam couplings can accommodate angular misalignment, parallel misalignment of one shaft relative to the other even axial movement. Beam couplings also differ from other coupling types in that their one-piece construction prevents the backlash typically encountered with couplings made of multiple parts.

Flexible Beam Coupling Shaft Coupling Spring Type

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Product Description

Flexible Beam Coupling Shaft Coupling Spring Type Coupling Shaft link for Motor

Feature

1. One-piece metallic beam coupling
2. Zero backlashes, flexible shaft
3. Spiral and parallel cut designs are available
4. Accommodates misalignment and shaft endplay
5. Identical clockwise and counterclockwise rotation
6. Available in aluminum or stainless steel
7. Multiple bore and shaft connecting configurations

Technical Data

Flexible Beam Coupling Shaft Coupling Spring Type Coupling Shaft link for Motor

Model

D (mm)

L (mm)

d1-d2 (mm)

hex screw

L1 (mm)

L2 (mm)

L3 (mm)

Fasten Torque (n.m)

LR-D-D15L20

15

20

3.0-8.0

M3.

2.5

2

0.4

1.2

LR-D-D19L25

19

25

6.0-10.0

M3.

3

2

0.4

1.2

LR-D-D25L30

25

30

8.0-12.0

M4

4

2

0.4

2.5

LR-D-D30L35

30

35

8.0-18.0

M4

4

2.5

0.5

2.5

LR-D-D35L40

35

40

8.0-22.0

M5

5

2.5

0.5

5

LR-D-D40L45

40

45

10.0-28.0

M6

6

3.5

0.6

8

 

Model

Max bore (mm)

Rated Torque (n.m)

Max Torque (n.m)

Max speed (rpm)

Moment of Inertia (kg.m2)

Permissible Radial Deviation (degree)

Permissible Angular Deviation (degree)

LR-D-D15L20

8

0.5

1

30000

2.5*10-7

0.05

0.5

LR-D-D19L25

10

1

2

25000

5.8*10-7

0.05

0.5

LR-D-D25L30

12

1.5

3

18000

1.8*10-6

0.05

0.5

LR-D-D30L35

18

2

4

16000

4.7*10-6

0.05

0.5

LR-D-D35L40

22

3

6

14000

1.1*10-5

0.05

0.5

LR-D-D40L45

28

6

12

12000

2.3*10-5

0.05

0.5

 

 

 

 

 

 

 

 

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Beam Coupling

Beam couplings connect rotating shafts and accommodate axial movement and misalignment of parallel or angular shafts. They feature a low-maintenance, one-piece design that provides greater misalignment capabilities. Beam couplings are often used in low torque applications that do not require high operating speeds, although some beam couplings can handle high torque applications.

There are several types of beam couplings, including flexible, slit, and rigid. Each has unique features and capabilities to address issues such as misalignment and backlash in motion control applications. Common uses for beam couplings include encoders, pumps, and a range of other light machinery applications. When choosing a beam coupling, it is important to pay attention to size, torque, and speed ratings to ensure it will meet your application needs.

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