Standard of the Drilling Industry for over 60 Years
Hydromatic® Brakes are available in sizes to meet every need for drilling to depths well below 35,000 feet and for all sizes of well servicing rigs. The range of sizes and maximum recommended operating speeds include the following:
Brakes are furnished with special shafts to customer's specifications up to the maximum shaft diameter shown.
+ Obsolete Models
* Based upon maximum possible fluid flowrate through the brake.
** Based upon maximum rotor RPM and attainable at a flowrate and horsepower less than maximum.
Parmac's new generation of Hydromatic® Brakes are more efficient for their size and weight. These include the following models: 121, 122, 201, 202, SSR28, 262, 341, 342, 451 and 481. These newer brakes have an improved sealing arrangement for better sealing and longer seal life, which also simplifies their replacement. Some of these new models offer easier controllability, and will fit in the old cradle without modification.
SEAWATER MODELS--Standard brakes require fresh water, free of all foreign substance. When seawater is the most economical and readily available water source, certain models of Seawater Hydromatic® brakes can be made available.
HELICOPTER TRANSPORTABLE--Brake models 341A, 342A, and 451 are special brakes with aluminum components, and weigh less than 4,000 lbs. The 481 and V200 brake models can be furnished with some aluminum parts to reduce weight.
When you need auxiliary braking capacity on your rig or semi, contact Parmac, the Auxiliary Brake People.