Autonics ERB Series Catalog Page

ERB Series

Flexible coupling

Features

● Zero (0) Backlash

● High torsional sti󰀨ness by high strength aluminum alloy
AL 7075-T6

● High corrosion resistance with alumite treated surface

● Two connection types (clamp type, set screw type)

Please read “Safety Considerations”
in the instruction manual before using.

Applications

● Stepper motor, Servo motor, Precision motor, high-precision encoder, dynamometer driver,
high speed/precision position control system

Ordering Information

ERB d1/d

A 19 C- -

Type

Item

Connection type

External diameter

2

Bore diameters

Number/Number Bore diameters

S Set screw

C Clamp

Number External diameter (mm)

A Double beam (normal type)

ERB Radial beam type coupling

Specifications

Model ERB-A-19C-

Connection type Clamp Set screw Clamp Set screw

Max. revolutions 8000rpm 20000rpm 6000rpm 15000 rpm

Max. torque 1.2N·m (12.17kgf·cm) 3.0N·m (30.42kgf·cm)

Rated torque 0.6N·m (6.08kgf·cm) 1.5N·m (15.21kgf·cm)

Mounting bolt
(mounting torque)

Torsional sti󰀨ness 140N·m/rad 240N·m/rad

Moment of inertia 6.4×10

Angular
Max.
allowable
misalign­ment

Standard bore diameter
(tolerance h7)

Min. allowable bore
diameter

Max. allowable bore
diameter

Material Aluminum (AL 7075-T6), Alumite surface

Weight Approx. 14 9g (approx. 14.4g) Approx. 37.3g (approx. 36.7g)

misalignment

Parallel

misalignment

End-play ±0.3mm ±0.4mm

M2.5 (1N·m) M3 (0.7N·m) M3 (0.7N·m) M4 (1.7N·m)

2.5°

0.15mm 0.2mm

Ø4, Ø5, Ø6mm Ø6, Ø8mm

Ø4mm Ø5mm

Ø8mm Ø12mm

□ □

2

-7

kg·m

ERB-A-19S- ERB-A-26C- ERB-A-26S-

3.4×10-6kg·m

□ □

2

H-102

Autonics

Flexible Coupling

Dimensions

Clamp type

K

2

ØD

M

L

B

1

ØA

ØD

C

C

Set screw type

L

M

B

2

ØD

C C

B

1

ØA

ØD

Proper Usage

The flexible coupling is available in the places where
v bration or misalignment occurs. It must be used within the
rated allowable misalignment range.
When using the flexible coupling over the rated
misalignment range, it may cause vibration or shorten the
life cycle.
When there are more than two misalignments, each
allowable value is 50%.
It is recommended to use the flexible coupling below 1/3 of
the allowable misalignment value to extend the life of the
coupling and the applied equipment.

(unit: mm)

Model ØA L ØD1ØD2M C B K

ERB-A-19C-04/04

ERB-A-19C-04/05

ERB-A-19C-04/06

ERB-A-19C-05/05

19 23

ERB-A-19C-05/06

ERB-A-19C-06/06

ERB-A-26C-06/06

26 31.4

ERB-A-26C-08/08

1---

Model ØA L ØD1ØD2M C B

ERB-A-19S-04/04

ERB-A-19S-04/05

ERB-A-19S-04/06

ERB-A-19S-05/05

19 22

ERB-A-19S-05/06

ERB-A-19S-06/06

ERB-A-26S-06/06

26 30

ERB-A-26S-08/08

1---

4

0

5

0

6

0

6

0

8

0

0.018

4

0

0.018

0.018

5

0

0.018

6

0

M2.5 6.1 3 5.75

0.018

5

0

0.018

1---

0.018

6

0

0.018

0.018

6

0

0.018

0.018

0.018

4

0

0.018

5

0

0.018

6

0

0.018

6

0

0.018

8

0

0.018

8

0

0 018

4

0

0 018

5

0

0 018

6

0

0 018

5

0

1---

0 018

6

0

0 018

6

0

0 018

8

0

M3 7.4 3.7 8.55ERB-A-26C-06/08

M3 5.7 2.8

M4 6.8 3.4ERB-A-26S-06/08

● This product is for transferring rotation power. If there is a
risk of human contact, attach the caution label or install a
safety cover in a prominent position.

● Rated torque is available to transfer the power
continuously. Check the rated capacity before using this
product.

● Max. torque is available to transfer the power in a
moment. Check the rated capacity before using this
product.

SENSORS

CONTROLLERS

MOTION DEVICES

SOFTWARE

(A)
Photoelectric
Sensors

(B)
Fiber Optic
Sensors

(C)
LiDAR

(D)
Door/Area
Sensors

(E)
Vision
Sensors

(F)
Proximity
Sensors

(G)
Pressure
Sensors

(H)
Rotary
Encoders

(I)
Connectors/
Connector Cables/
Sensor Distribution
Boxes/ Sockets

Caution for using

● Couplings are for transferring rotation angle and power
between shafts. Before using this, make sure to check
the purpose and appropriacy.

● This product uses high strength aluminum alloy and
has spring power as Radial beam type. However, if the
coupling is dropped, hit or applied excessive power, it
may be damaged or transformed.

● If the coupling is applied over the rated misalignment, or
the tolerance of the shaft is over the allowable value, it
may cause plastic deformation, damage of the product or
shorten the life cycle.

● When it occurs abnormal sound during operating the
equipment with this coupling, stop the operation and
remove the cause such as misalignment, unscrewing, or
rotation hazard.

● If this coupling is applied to the equipment which has big
fluctuation of load, shaft may be loose by unscrewing.
Tighten the screw securely and prevent from unscrewing.

Autonics

H-103