Wichita Clutch Mistral Tension Brake User Manual

Tension Brakes/Air Cooled

Mistral Brakes

Wichita Mistral pneumatic tension brake is
attuned to the needs of the corrugating market
for which it was originally de signed. It is also a
versatile product which is finding favor in ad di -

tion al tensioning ap pli ca ­tions. Wichita de sign ers
and en gi neers consulted
ex ten sive ly with mill roll
stand man u fac tur ers and
users to offer a tension
brake ideally suited to
the needs of this

particular market. The
result is a compact, high per for mance, ver sa tile
brake ca pa ble of han dling the tensioning needs
of the latest ma chine de signs, as well as
existing equip ment. The Mistral paves the way
for in creas ing line speeds by 5.4 ft./sec. from
810 ft./min. (or slower) to 1,140 ft./min.

Mounting Ease

Three bolts mount the brake to the arm of
the mill roll stand or machine frame and an
optional pilot location makes fitting to both
new and existing ma chines a simple
operation.

Wear Indicator

A brake wear
in di ca tor, which
is con ve nient ly
lo cat ed for easy
visual in spec tion, means
no down time to check
re main ing friction
material life.

Easy Connection

Air and electrical connections are easily
accessible for fast, simple installation and
main te nance.

Compact Design, Modern Styling

Mistral brakes are compact at only 11.6" or 16.1"
in diameter. Their size facilitates the pickup of
small, part reels used in short batch runs. For
automatic reel loading machines, Mistral offers
optional infrared and speed sensor installation
within the brake. And their modern, industrial
styling enhances the appearance of any ma chine
on which they are used.

guards. Op er a tor safety is further en hanced by
au to mat ic air and electric disconnects when
the front cover is removed.

102 Wichita Clutch 800-964-3262

Fine Tuning

Each brake may be specified with a varying
number of pneumatic actuators, allowing precise
selection of brake torque capacity for optimum
tension control.

Safety

Mistral’s integral guard ing
elim i nates the cost and
effort of installing external

P-1100-WC 1/12

Tension Brakes/Air Cooled

Mistral Brakes

Front Cover Removal

By removing just three cap screws, the
Mistral’s front cover can be detached for
easy and fast access to internal parts. Cover
re mov al au to mat i cal ly dis con nects both air
and electricity.

Fan Data and Connection Data

Model Fan Voltages Fan Power Electric Pneum.

220 VAC or/order M16 1/8 BSP

200 110 VAC or/order 20W PG9 1/8 BSP

24 VDC 3/8 NPT 1/8 NPT

220 VAC or/order M16 1/8 BSP

280 110 VAC or/order 18W PG9 1/8 BSP

24 VDC 3/8 NPT 1/8 NPT

Integral Cooling

A rugged, high
per for mance,
low energy
us age fan is
housed within
the brake for
high heat
dissipation —
a must for
in creased
pro duc tiv i ty through con trolled tension
at many roll speeds.

Performance Curve

C

Dynamic Slipping Heat Transfer Maximum Inertia of Fan Power

Model Torque Capacity Capacity Speed Rotating Parts Weight Rating

Air Pressure Continuous :30 On/:30 Off

lb.in. (Nm) Operation Operation WR

Min.* Max. Min.* Max.
Mistral 3 PSI 80 PSI 0.2 BAR 5.5 BAR HP (kW) HP (kW) Rev./Min. lb.ft.2 (kgm2) lb. (kg.) lb. (kg.) W

200/2/LC 35 1,770 (4) (200) 3.2 (2.4) 3.5 (2.6) 2,860 0.40 (0.017) 77 (35) 9.92 (4.5) 20

200/2 45 2,655 (5) (300) 3.2 (2.4) 3.5 (2.6) 2,860 0.40 (0.017) 77 (35) 9.92 (4.5) 20

200/4/LC 35* 3,540 (4*) (400) 3.2 (2.4) 3.5 (2.6) 2,860 0.40 (0.017) 77 (35) 9.92 (4.5) 20

200/4 45* 5,310 (5*) (600) 3.2 (2.4) 3.5 (2.6) 2,860 0.40 (0.017) 77 (35) 9.92 (4.5) 20

200/6/LC 35* 5,310 (4*) (600) 3.2 (2.4) 3.5 (2.6) 2,860 0.40 (0.017) 77 (35) 9.92 (4.5) 20

200/6 45* 7,965 (5*) (900) 3.2 (2.4) 3.5 (2.6) 2,860 0.40 (0.017) 77 (35) 9.92 (4.5) 20

280/3/LC 45 3,540 (5) (400) 6.4 (4.8) 7 (5.2) 2,090 1.80 (0.076) 110 (50) 20.72 (9.4) 25

280/3 55 5,310 (6) (600) 6.4 (4.8) 7 (5.2) 2,090 1.80 (0.076) 110 (50) 20.72 (9.4) 25

280/6/LC 45* 7,080 (5*) (800) 6.4 (4.8) 7 (5.2) 2,090 1.80 (0.076) 110 (50) 20.72 (9.4) 25

280/6 55* 10,620 (6*) (1,200) 6.4 (4.8) 7 (5.2) 2,090 1.80 (0.076) 110 (50) 20.72 (9.4) 25

280/9/LC 45* 10,620 (5*) (1,200) 6.4 (4.8) 7 (5.2) 2,090 1.80 (0.076) 110 (50) 20.72 (9.4) 25

280/9 55* 15,930 (6*) (1,800) 6.4 (4.8) 7 (5.2) 2,090 1.80 (0.076) 110 (50) 20.72 (9.4) 25

* With only one set of actuators engaged

P-1100-WC 1/12

2

J=mr

2

Total Brake Rotating Parts

Wichita Clutch 800-964-3262 103