Oil Shear Brake, Clutches And Inertia Dynamometers

Product Details:

Whether it’s testing the most complex aircraft system, off road final drives, or tractor transmissions; Force Control has the products for your load testing requirements. Our patented high-torque, low-speed Positorq load brakes are used to simulate real world environments.

Force Control Industries unique Oil Shear Technology provides heat dissipation for high horsepower applications while maintaining a compact profile capable of direct mounting to the drive axle - eliminating additional gearboxes.

In addition, with Oil Shear Technology, disc wear is negligible, allowing long term testing without loss of torque. In fact most Positorq Dynamometer load brakes in service over the past 40 years have required little to no maintenance.

Dynamometer Load Brake:

• Quick Response
• Proportional Linear Torque Control
• Continuous High Torque at Low Speed
• High Static Torque
• No Chatter Down to 0 RPM
• Quiet—Less Than 20 dB
• Compact Size—Direct Axle Mount

 

Positorq brake applications typically include two major components – the brake connected to the load and a Forced Lube Cooling Unit. The brake is a multiple disc hydroviscous brake featuring Oil Shear Technology developed and refined by Force Control Industries, Inc. starting in 1969. The multiple disc brake stack is actuated by applying a clamping pressure to the stack through a piston. The actuation medium can be pneumatic or hydraulic, hydraulic being more controllable with quicker response. Changing the actuation pressure changes the torque transmitted proportionally.

 

Because this is a compact design with low inertia rotating components there is little surface area to dissipate thermal energy from the continuous slip load. For that reason we utilize a separate free standing forced lube cooling unit to pump transmission fluid through the brake returning it to be cooled and filtered and returned to the brake. 

 

Positorq brake applications typically include two major components – the brake connected to the load and a Forced Lube Cooling Unit. The brake is a multiple disc hydroviscous brake featuring Oil Shear Technology developed and refined by Force Control Industries, Inc. starting in 1969. The multiple disc brake stack is actuated by applying a clamping pressure to the stack through a piston. The actuation medium can be pneumatic or hydraulic, hydraulic being more controllable with quicker response. Changing the actuation pressure changes the torque transmitted proportionally.

 

 

Because this is a compact design with low inertia rotating components there is little surface area to dissipate thermal energy from the continuous slip load. For that reason we utilize a separate free standing forced lube cooling unit to pump transmission fluid through the brake returning it to be cooled and filtered and returned to the brake.

Product Details:

The All-In-One BrakeThe Positorq brakes designed for continuous slip applications, but also are dynamic stopping brakes, and static holding brakes all in one package. Competitive dry friction brakes can wear, need adjustment, a disk replacement, chatter at low speed, and can be very noisy. Electric systems need to operate at higher speeds requiring some kind of gear reduction for low speed applications, require oversizing for dynamic stopping, and do not have holding capability especially if a loss of electrical power occurs. Winch/Drawworks Tension Brakes

 

The Positorq brakes are designed for continuous slip applications, but are also dynamic stopping brakes, and static holding brakes all in one package. Competitive dry friction brakes can wear, need adjustment, a disk replacement, chatter at low speed, and can be very noisy. Electric systems need to operate at higher speeds requiring some kind of gear reduction for low speed applications, require oversizing for dynamic stopping, and do not have holding capability especially if a loss of electrical power occurs.

The Positorq braking system is designed as totally enclosed system with air or hydraulic actuation for hazardous environments, and fresh or salt water applications. Some examples of ideal applications include anchor winches, mooring winches used in Offshore Oil and Gas well applications. Another application is the drilling rig drawworks. Replacing the Baylor eddy current brake on older system is a great upgrade as now you have a smooth brake for drilling, high capacity dynamic brake for tripping, and a static holding brake.

These Positorq brakes are rated up to 180,000 Lb. Ft. continuous slip torque, and 300,000 Lb. Ft. static holding torque and can dissipate up to 3000 thermal horsepower.

A major advantage for Positorq brakes is Oil Shear Technology. Oil Shear Technology provides smooth engagement, higher heat dissipation, negligible wear on friction discs, bearings, and splines, and quiet operation. This all contributes to higher productivity, lower maintenance cost, and better return on investment.

The Positorq Brakes operate by applying pressure on a piston or pistons clamping the friction stack. The tighter the clamping force the higher the torque, and it is not affected by speed. The actuation medium can be pneumatic or hydraulic. The hydraulic actuation is more controllable.

Transmission fluid in the brake transmits torque between the friction disc and drive plates providing the torque. As this fluid is heated it is pumped back through a Forced Lube Cooling Unit that has oil-to-water or oil-to-air cooling, filters, pumps and reservoir. The FLCU allows the brake to be very compact, with low inertia.

Product Details:

The Positorq Oil Shear Absorber brakes are a unique design for continuous tension control, The unique Oil Shear Technology provides extremely smooth, ultra-quick response, negligible wear with no adjustment required, high energy dissipation in a compact package, and noise free. Positorq Brakes are rated up to 180,000 Lb. Ft. Slip Torque and 3000 Thermal Horsepower.

The Positorq brakes work well in tension applications especially unwind stands where the brake is used to maintain tension on the strip. This can be paper, board, plastic, copper, steel, and wire. The brake can be coupled, flange mounted, or connected through gear, belt, or chain drive.

A major advantage for Positorq brakes is Oil Shear Technology. Oil Shear Technology provides smooth engagement, higher heat dissipation, negligible wear on friction discs, bearings, and splines, and quiet operation.

The Positorq Brakes operate by applying pressure on a piston or pistons clamping the friction stack. The tighter the clamping force the higher the torque, and it is not affected by speed. The actuation medium can be pneumatic or hydraulic. The hydraulic actuation is more controllable.

Transmission fluid in the brake transmits torque between the friction disc and drive plates providing the torque. As this fluid is heated it is pumped back through a Forced Lube Cooling Unit that has oil-to-water or oil-to-air cooling, filters, pumps and reservoir. The FLCU allows the brake to be very compact, with low inertia.