MagnaShear Motor Brakes & PosiTorq Winch Tension Control Brakes in the News

press release
Tuesday, September 06, 2011

Oil Shear Technology Lasts Longer with Virtually No Maintenance

MagnaShear oil shear motor brakes and Positorq oil shear winch tension control brakes from Force Control Industries are ideal for marine applications because they eliminate normal maintenance and adjustment, operate smoothly, and last up to 10-times longer than standard brakes.  High grade castings, marine duty coatings, stainless steel fasteners and accessories make these brakes the ideal solution for onshore and offshore marine applications.  Their varied ship-board and in-port applications include use on anchor winches, mooring winches, drawworks, capstans, conveyors, hoists, loaders and un-loaders, and more.

Oil Shear Technology is the reason that brakes by Force Control do not need maintenance, adjustment, disc replacement, and last up to 10 times longer than standard brakes. Oil Shear Technology is the function of a boundary layer of transmission fluid in shear between the friction disc and drive plate. As the parts come together the fluid under shear will transmit torque between the two parts as well as absorb heat. This heat is then taken away from the friction surface to the housing to be dissipated.

MagnaShear Oil Shear Marine Duty Motor Brakes – Never Need Adjustment


Totally enclosed MagnaShear brakes are impervious to moisture, dirt and dust, and salt water common in marine applications.  These proven motor brakes are available to accommodate a wide range of applications.   Spring set torque ratings from 3 to 1250 foot-pounds are available.  MagnaShear® motor brakes can be sized with the correct torque independent of the motor frame size or horsepower.

MagnaShear motor brakes feature “quick mount” features for quick and easy mounting to drive motors in NEMA frame sizes 56 to 449.  They are shipped ready to install, with no assembly or adjustments required.  They are also available pre-mounted on a motor for severe duty applications.  MagnaShear® motor brakes can be furnished to fit a NEMA or IEC frame motor, as a complete motor and brake assembly, or to mount on a machine frame or other special mounting configuration. These proven motor brakes are totally enclosed from outside contaminants, with seal integrity for harsh fresh and saltwater environments.  A modular design /assembly allows for ease of servicing and maintenance.  

Positorq Oil Shear Payout Brakes – Smooth, chatter free torque for mooring, anchor winches and drawworks

Positorq absorber brakes and clutches provide simple, precise torque control over the entire speed range, even at low speed.  Operational speeds at levels down to 0 rpm are precisely controlled without chatter, stick slip or torque variation.  Torque is controlled by actuation pressure and is independent of speeds above the residual (minimum) drag torque.  Various sizes are available from 53 Ft. Lbs up to 300,000 Ft. Lbs, with continuous heat absorption capability up to 3000 thermal horsepower.  Positorq® Oil Shear brakes are ideal for tension control applications such as on anchor systems and mooring winches, drawworks, and other on-board and in-port applications requiring smooth payout control.

In this unique Oil Shear Technology design, fluid is pumped through the multiple disc stacks to provide both lubrication and heat dissipation.  Elimination of the heat improves brake consistency, while providing longer life with virtually no adjustment or disc replacement required.  Positorq brakes are quiet – noise levels of the brake system are below 65 db.  

Since the effective radius, number of discs and friction factor remains constant, the torque available is directly equivalent to the actuation pressure (air or hydraulic) furnished to the actuating piston.  With multiple braking surfaces, the Positorq® is not only compact but also low inertia.  A separate forced lube cooling system allows for a small size with high thermal capacity. Smooth, consistent actuation with low piston hysteresis is experienced by the use of Teflon liners over the O-rings to seal the non-rotating piston.  This eliminates stick slip often associated with O-ring seals.

Maritime Reporter September 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

People & Company News

Coast Guard Foundation to Honor USCG in Miami

The Coast Guard Foundation, a nonprofit organization committed to the education and welfare of all Coast Guard members and their families, announced today that

Maritime Broadband Opens Office in Greece

Maritime Broadband has expanded its worldwide footprint by opening an office, Maritime Broadband Hellas, in Athens, Greece. The new office addresses the growing

Renewable Energy: Schottel Tidal Turbines Ready For Use

In the last months Schottel  successfully tested its hydrokinetic turbines in Strangford Lough, Northern Ireland. The full-scale tests included 260 operating hours under realistic conditions.

Marine Equipment

B COOL Acquires MEMAC

With the acquisition of MEMAC, B COOL A/S now offers customers one entry to multiple maritime systems – both refrigeration solutions and monitoring of the engine

TRIYARDS Buys into Aluminium Shipbuilding Expertise

TRIYARDS Holdings Limited, an offshore vessel fabrication and engineering solutions provider to the oil and gas (O&G) industry, has added new capabilities, products

Singapore’s MPA Discuss LNG Bunkering

The Maritime and Port Authority of Singapore (MPA), Antwerp Port Authority, Port of Rotterdam and Port of Zeebrugge participated in a Liquefied Natural Gas (LNG)

Deck Machinery

SOSI Delivers Mooring Winches; Completes Test Pad

Sound Ocean Systems, Inc. (SOSI) announced the delivery of two unique mooring winches, both tested on its newly constructed test pad at its primary manufacturing facility in Sultan, Wash.

Barge Master Installed on Walk-To-Work Vessel

On October 14 the Barge Master BM-T40 system motion-compensated knuckle boom crane pedestal was installed on the new Wagenborg Walk-to-Work vessel, designed and built by Royal Niestern Sander.

 
 
Maritime Careers / Shipboard Positions Naval Architecture Offshore Oil Pipelines Salvage Ship Electronics Ship Simulators Shipbuilding / Vessel Construction Sonar Winch
rss | archive | history | articles | privacy | terms and conditions | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.2247 sec (4 req/sec)