Products Power Transmission Products

  • Echt-Flex® Coupling

Combination of NES Low Inertia and Straight Hubs

This small disk coupling uses extra super duralumin for the hub and spacer, and is suitable for a small servomotor drive.

For this model, the low inertia hub and straight hub are combined.

All models are RoHS compliant.

Combination of NES low inertia and straight hubs

Standard

Capacity
(N·m{kgf·m})
Bore Diameter Range
(mm)
5.0{0.51} to 300{30.6} Low inertia hub:φ5.0 to φ42
Straight hub:φ6.0 to φ50

1.Features

Low Moment of Inertia
The hub and spacer use light-weight and high-strength extra super duralumin. The unique configuration of the low inertia hub achieves lower moment of inertia.Ideal for high acceleration/deceleration operations such as a servomotor drive.
High Torsional Stiffness
The straight hub boasts high torsional stiffness and provides excellent servomotor responsiveness. Most suitable for precise control.
No Backlash
As all torque is transmitted via friction locking, there is no backlash. Excellent for high-precision positioning.
Easy Installation
Both sides of the hubs are assembled to ensure concentricity. Can be connected with the shaft by simply tightening one clamp bolt on each side.
Environmentally Friendly
This product is compliant with the RoHS directive as well as hazardous chemical substance regulations JIG, PFOS and 15 SVHCs.
Extensive Lineup
Can meet the wide variety of needs with 56 combinations of low inertia and straight hubs, supporting 3252 patterns of different shaft bore diameters.

2.Structure

Structure

Note:
The exploded view above illustrates a combination of straight hubs, and the photo shows a combination of a low inertia hub and a straight hub.

3.Reference Number System

Reference Number System

*Please indicate the smaller bore diameter first.

4.Standard Shaft Bore Diameter List -Low Inertia Hub (φD1)-

Size Standard Shaft Bore Dia. (mm)
NES50 5 6 6.35 7 8 9 9.525 10
NES70 8 9 9.525 10 11 12 14
NES100 8 9 9.525 10 11 12 14 15
NES250 10 11 12 14 15 16 17 18 19 20
NES800 14 15 16 17 18 19 20 22 24
NES1300 19 20 22 24 25 28 30 32
NES2000 25 28 30 32 35
NES3000 32 35 38 40 42

5.Standard Shaft Bore Diameter List -Straight Hub (φD2)-

Size Standard Shaft Bore Dia. (mm)
NES50 6 6.35 7 8 9 9.525 10 11 12 14 15 16
NES70 8 9 9.525 10 11 12 14 15 16 17 18 19 20
NES100 8 9 9.525 10 11 12 14 15 16 17 18 19 20 22
NES250 10 11 12 14 15 16 17 18 19 20 22 24 25
NES800 14 15 16 17 18 19 20 22 24 25 28 30
NES1300 20 22 24 25 28 30 32 35
NES2000 25 28 30 32 35 38 40 42 45
NES3000 35 38 40 42 45 48 50