The brake is to sustain a torque of 350 N-m and the coefficient of friction between the band and the drum is 0.3.
Use a drum micrometer or an equivalent tool to retrieve these measurements. Then with the help of formula( torque= Clamping Force ×Radius of drum ), you can easily find the required radius of your drum brakes. Find : 1. The band has a compressed woven lining and bears against a cast iron drum of 350 mm diameter. Diameter. A simple formula can allow you to calculate the volume of a cylinder from a few simple measurements. Use to design and calculate shoe drum brakes. Metal drums are common containers used to ship oil and many other materials. ground to a smaller diameter than the drum. Bolt Circle Bolt Hole Size Flange Thick Weight ConMet Interchange Gunite Interchange Webb Interchange Meritor Interchange KIC Interchange 15" X 4" Front Brake Drums Factory Design Suite 2016, Inventor 2016, & Product Design Suite 2016 Access: Ribbon: Design tab Power Transmission panel Drum Brake Calculator Force Select the input and output parameters. Use a pair of inside calipers ( you could make a pair out of wood or metal) measure with a decent metal rule and divide by 2 for the radius. It works with single or dual master cylinders. Brakes Calculation The Brakes Calculation determines the forces, hydraulic pressures and wheel braking forces for your brake setup. A metal drum is essentially a cylinder. Wire Rope Estimator, Tugger Wire Rope Calculator, Winch Cable Capacity If the drum is scored or grooved, … Calculate Outside Diameter according to the Friction Factor, Torque, and Input Force. brake drum re-bore limits and/or maximum wear diameter This information is furnished to advise the importance of the re-bore limits and/or maximum wear diameter as shown on our Webb brake drums. In contrast the pinned shoe brake (Figure 5) must have its linings crown ground, i.e. Compare them to the diameter stamped on the outside of the drum. If the Jeep's wheel has a radius of 0.25 meters, the braking torque equals 8,000 N * 0.25 m, or 2,000 Newton-meters.

Due to the fact that a drum brake's friction contact area is at the circumference of the brake, a drum brake can provide more braking force than an equal diameter disc brake. Access: Ribbon: Design tab Power Transmission panel Drum Brake Calculator Force Select the input and output parameters. The linings should be firmly bonded or riveted to the brake shoes. Cracks are usually too deep for machining, and the drum must be discarded. brake drums for the heavy-duty commercial vehicle industry. In order to maximize the service life of your Gunite brake drums, proper installation, periodic inspection, and maintenance Note: Only constant braking torque is taken into account. Always measure the inside of the brake drum before deciding to discard or machine on a lathe. If there's a dull thunk, check for a crack in the drum's surface. Note: Only constant braking torque is taken into account. You could skip the calipers and use a decent rule but it won’t be as accurate. A few rules must be respected calculating a non-standard drum which are outlined below. Calculates the braking torque, forces, pressures, basic dimensions, and necessary time and revolutions for stopping. If yours have been on your vehicle for some time, they’ll have grooves in them and may be … The minimum drum diameter follows from the minimum rope bending radius. This ensures that the centre of the lining always touches the drum first, until the lining is fully bedded in.
Use to design and calculate shoe drum brakes. The force of the road is the equal and opposite torsional reaction caused by the brakes, so the braking torque is equal in magnitude and opposite in direction to the torque exerted by the road.

Friction Factor Enter the value or click the arrow next to the edit field to select the coefficient in the table. Most brake shoes and linings are built to last for 20,000 to 40,000 miles; some last even longer. For calculating the Drum brake radius, You will need the braking torque required for stopping the vehicle. If the leading edge of the leading shoe were to touch the drum first the brake would grab. Surface Width Pilot Bolt Hole No.