Up to 600 kNm;
5,300,000 in.lb.

These torsionally stiff, light weight couplings are capable of transmitting high torques at high speeds while accepting significant levels of angular, radial, and axial misalignment. They are easy to install, suitable for hostile environments, require no lubrication and feature a high torque to weight ratio. Specific designs are available which meet the customer’s exact requirements. Standard units are compliant with API 671 (American Petroleum Institute) and ATEX 94/9/EC.

•	No maintenance
•	Standard and reduced moment designs available
•	Capable of being torsionally tuned to suit specific machinery requirements

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

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.

Spring-applied, hydraulically released modular disc brake

•	119 kN Braking Force
•	On-site torque adjustment to precisely match application needs
•	“park-off” facility for fast pad changing without special tools
•	Spring-Applied – low pressure air release
•	Controlled reversal of belt
•	Automatic release of belt tension
•	Stops in either direction

Spring-applied, hydraulically released caliper brake

•	35 kN Braking Force
•	On-site torque adjustment to precisely match application needs
•	“park-off” facility for fast pad changing without special tools
•	Spring-Applied – low pressure air release
•	Controlled reversal of belt
•	Automatic release of belt tension
•	Stops in either direction

Complete line of spur, helical, miter, bevel, worms and worm gears.

•	Thousands of gears are available for immediate shipment
•	Custom gears can be designed and manufactured
•	All gears are manufactured to the strictest standards for the highest quality product available

Designed for static hold operations. Brake automatically engages when power is turned off.

•	Holding torque rating: 34 lb. ft.
•	Electrically released, spring actuated
•	Quick, quiet response for rapid engagement
•	Compact, low profile design saves space
•	Splined hub available in 5 bore sizes
•	Pre-assembled and burnished at the factory

Low inertia air set clutch designed for Propel motions

•	High Torque, low inertia
•	Low spline stresses
•	Fast response
•	Balanced for high speed operation
•	Integral Rotary Air Inlet

Spring-Set Motor Brakes ideal for failsafe protection.

•	High energy lining provides long life
•	High torque, low inertia design
•	Quick, simple installation
•	Low stress spined hub
•	Available with taper bore
•	Multiport air inlets available

The Model LKT clutch or brake contains identical features to the Model LK unit, with the exception being the cylinder/piston arrangement. The Model LK has a full cylinder covering its entire outboard end, the Model LKT has a doughnut type cylinder which allows it to be mounted in a through-shaft arrangement as an air set brake. It can be also be mounted end-shaft as a clutch. This is a dry, disc type application.

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 soft starts.
Features include:

•	Pneumatic or hydraulic actuation.
•	Clutch torque capacities range from 55,000 to 1,275,000 pound-inches.