HF721-20-B7-H-P21 Right Angle Hollow Shaft Worm Gear Speed ReducerOur standard 700 Series the heart of Boston Gear's speed reducer product line has been serving many industries reliably for over 40 years. Its proven modular design has set the industry standard for performance and is the most imitated product in today's worm gear speed reducer market. But why settle for a knock off when you can have the original from Boston Gear. Specifications Reducer Material Paint: Cast Iron, Standard Paint Reduction Type: Single

If power fails

When used with worm gears

The spline design virtually elimi nates back lash which is a delayed action effect caused by excessive clearances between hub and discs

Fan Cooled: No

Collars include stainless steel screws

To run properly

worms and worm gears operating together must have the same diametrical pitch and threads

Center Distance: 3

glass-filled bearings are self-lubricating and offer a low coefficient of friction

the CUCST has a Hard Chrome bearing insert and a Stainless Steel housing

TENV Non Ventilated & TEFC Fan Cooled

shallow taper