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AC Solenoids Brakes

AC Solenoids Brakes

Solenoid operated brake is designed for long life, easy installation minimum maintenance. They are electrically released and spring applied providing ‘Fail Safe’ operation. The retarding torque developed is directly proportional to the spring and pressure.

Constructional Features

Special constructional features such as those listed below account for exceptionally long mechanical life of the brakes.

Neoprene Shock Absorber -

Prevents link pin breakage and increases the life of the solenoid.

Hardened Steel Lever and Spring Gland -

The hardened steel construction of the lever and spring gland reduces wear at the pins and all other points of contact.

Cast Iron Wheel -

The physical properties of the minimize the tendency of the wheel to deposit metal particles in the lining which could result in serious scoring of the wheel.

Spring Pins -

The tight gripping spring pins insure against the loss of pins due to shock.

Inexpensive Lining Replacement -

Linings attached to shoes by removable flat head groove-pins.

Fewer Joints -

The shoe is actually a part of shoe lever and not separate from it .This makes for fewer mechanical joints and keeps wear points at a minimum.

Solenoid -

The solenoid coil can be removed without disturbing the brake adjustment. Solenoid loading is designed to reduce wear.

Technical Specification

MODEL 4 5.5 7
DRUM DIA (MM) 4” (101.6mm) 5.5” (139.7mm) 7” (177.8mm)
BREAKING
TORQUE (KGM)
1.36 3.4 6.8
STROKE (MM) 25 31.4 31.4
VOLTAGE IMPUT 415 415 415
HOLDING VOLTAGE 415 415 415
OPERATING TEMPERATURE Ambient Temp. Ambient Temp. Ambient Temp.
COIL CLASS F
Insulation
CLASS F
Insulation
CLASS F
Insulation
RATING Intermittent Intermittent Intermittent
NO OF
OPERATIONS
720 Operations/Hr 720 Operations/Hr 720 Operations/Hr
TOTAL WEIGHT
(KG)
5.5 Kg 11.5 Kg 15.5 Kg

Brake Selection

The method most generally used to determine the required braking torque is to calculate the full load motor torque by means of the following formula:

T = 9552 x kW n

T = Full load motor torque in Newton Metre (Nm)

kW = Motor output in Kilowatts

n = Rated speed of the motor shaft on which brake wheel is mounted in revolution per minute(r.p.m)

The torque rating of brake selected should be at least equal to the full load motor torque for the duty considered.

BRAKE
TYPE
DRUM DIA TORQUE MAX
INCH MM KGM NM
4 04 100 1.3 13.6
5.5 5.5 139.7 3.4 34
7 07 177.8 6.8 68