
The KK is designed for high-energy continuous slipping applications. It is suitable for end-shaft or through-shaft mounting.
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Water-cooled brake with the cooling water contained within water jackets. |
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Copper plates quickly transfer the heat away from the friction surfaces to give good control and long life. |
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The friction surfaces are dry running. |
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Air applied brake with full circle friction discs. |
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Air and water connections are stationary |

The Model HC is an oil-immersed clutch designed for end-shaft, or through shaft mounting configuration. The compact size of the HC makes these units ideal for incorporation within a gear housing. Multiple speed transmissions use a variety of these units to affect fixed mesh speed changes. The Model HC may be used as a stand-alone device for disconnects service, or conveyor/mill soft starts.
Features include:
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Pneumatic or hydraulic actuation. |
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Clutch torque capacities range from 55,000 to 1,275,000 pound-inches. |

Available in ratings up to 40,000 HP and output
speeds up to 20,000 RPM or higher in ratios up to
9:1. Nuttall Gear's design features include heavy
cast iron or welded steel housings for strength and
rigidity, dynamically balanced precision double
helical gears for uniform load distribution, and
oversized split sleeve bearings with labyrinth oil
seals to insure reliability.

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Automatic engagement and disengagement |
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Delayed engagement produces a “no load start” |
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No slippage at full running speed |
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Controlled soft-start acceleration |
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100% efficient at rated speed |
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Standard, spring control, and deep pocket models |
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Protection against shock loads during start-up |

Complete line of spur, helical, miter, bevel, worms and worm gears.
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Thousands of gears are available for immediate shipment |
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Custom gears can be designed and manufactured |
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All gears are manufactured to the strictest standards for the highest quality product available |
Boston Gear's 800 Series contains a focused selection of compact, heavy duty helical gear drives that offer long-life performance and simplified maintenance. The 800
Series provides a functional
interchange for SEW Eurodrive
and other European manufacturers' helical gear drives, making it uniquely practical for replacement
applications.

The Twiflex centrifugal clutch coupling is designed to provide load free starts and smooth acceleration. Ideal for engine drives.
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Loads are smoothly accelerated giving soft start |
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Reduces shock on shafts and gearing |
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Engine starts and idle free of load |
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Serves as automatic throttle controlled clutch |
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Eliminates shock loads |
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Prevents engine stall under sudden overload |
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Prevents engine reverse swing when coming to rest |
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Limits vibratory torques to safe level |
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Combines advantages of an efficient flexible coupling. |
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100% efficiency saves fuel. |
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Long trouble-free life with no routine maintenance. |

Spring-applied, hydraulically released modular disc brake
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300 kN Braking Force |
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On-site torque adjustment to precisely match application needs |
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“park-off” facility for fast pad changing without special tools |
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Spring-Applied – low pressure air release |
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Controlled reversal of belt |
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Automatic release of belt tension |
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Stops in either direction |
