ATT series0 pages

Electric Brakes and Clutches
ATT Series – Advanced Technology Brakes and Clutches

Advanced Technology –
A new design concept!
Warner Electric’s ATT Series clutches
and brakes are rugged and durable.
Besides providing the ultimate in long
life and durability, the ATT units are easily repairable... and, for the first time,
mounting a standard sheave, pulley or
sprocket to the clutch is a snap.
AT Clutches and Brakes are completely
assembled at the factory and have
been specifically designed to match
the torque ratings of standard motors,
reducers, and other power transmission
components. Easy to select and
easy to install.

Features:
ATT Tension Clutches
and Brakes
Ideal for intermediate range
applications
Both brake and clutch models for
winders and unwinders
.284 to .9 thermal horsepower
capacity
Brake wear faces replaceable on the
shaft for limited downtime
Full range of control options.
See pages 40-41.

Unit Size

Maximum
RPM

Continuous1
Dynamic Torque

Continuous Operation

Overcurrent
E-Stop Torque

Thermal HP vs. Selection RPM
36

1.09

ATT Brakes
15 lb.ft

15 lb.ft

21 lb.ft

ATTB-115

3600

62 lb.ft.

83 lb.ft.

ATT Clutches
2

ATTC-25

3600

7 lb.ft.

*

ATTC-55

3600

12 lb.ft.

*

ATTC-115

3600

41 lb.ft.

*

Notes
1. Dynamic torque is constant over a speed range of 0–600 RPM
2. Overcurrent is not used on clutch applications for tensioning

.91

B-1

30

15

T
AT
.73

.55

.36

24
5
C-11
ATT
-55
ATTB

5

ATTB-2

12

-55
ATTC

ATTC-2

5

6

.18

0

0
50

100

200

300

400

Selection RPM
ATT Clutch
ATT Brake

70

18

500

600

Heat Input (x1000 lb.ft./min.)

8 lb.ft.

3600

Consult Factory

3600

ATTB-55

Heat Input (THP)

ATTB-25