Surplus Buying and Selling
Longer Service Life with Oil Shear Technology
MagnaShear™ Maintenance-Free, No-Adjustment Crane Brakes Eliminate Downtime
F
orce Control Industries presents a maintenance-free, no-adjustment crane brake that virtually eliminates crane downtime. The MagnaShear™ motor brake employs oil shear technology, providing longer service life in demanding applications like the frequent start/ stop cycles seen on cranes, hoists, and winches. Proven oil shear technology transmits torque between lubricated surfaces – thereby eliminating wear on friction surfaces. A patented fluid recirculation system dissipates heat – eliminating heat build-up which is the most common problem in dry braking systems. Elimination of the wear significantly increases service life and virtually eliminates adjustment which also elongates maintenance intervals. An anodizing plant cut preventative maintenance by 2 hours per week and eliminated $8000 in annual parts expenditures by switching from dry brakes to MagnaShear™ motor brakes. In addition to cranes, winches and hoists, they are ideal for applications where the motor is reversed each cycle such as loader/unloader conveyors, rail car spotters and dumpers, ship and rail car loading conveyors, trippers and pallet return conveyors. The oil shear technology also provides a smooth “cushioned” stop which reduces shock to the drive system, further extending service life of downstream components. The totally enclosed MagnaShear™ brakes are impervious to moisture, dirt and dust that is common in concrete block plants as well as asphalt shingle manufacturing, coal, bulk materials handling, forest products manufacturing, and more.
How Oil Shear Works Unlike dry brakes, oil shear technology includes a layer of automatic transmission fluid between the brake disc and the drive plate. As the fluid is compressed, the fluid molecules shear – thus imparting torque to the other side. This torque transmission causes the rotating discs to decelerate against
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44 IMD MARCH 2021
