Double Driver

The Double Driver was developed to provide a NEMA C-flange interface on the output of D-90 TYPE-SE units. Additionally, the product is well suited to provide an output register for any piece of equipment. The Double Driver is made up of a DN, CDN or MDN unit with an output flange and optional output shaft to accommodate a NEMA C-flange interface.

Double Reduction Field Retrofit
The Double Driver, with optional NEMA output shaft, can be used in the field to create a double reduction unit by attaching to the input of a NEMA C-flange reducer. The Double Driver can be positioned in any of four positions to create various assemblies. This feature is very helpful in making a distributor's finished goods inventory more versatile. This feature is also used at WINSMITH to make the S-ELIMINATOR into a double reduction unit. The S-ELIMINATOR high speed shaft must be able to move axially for backlash adjustment. Using a coupling style input on the S-ELIMINATOR and a Double Driver as the primary stage, a coupling can be used between the units to allow movement of the S-ELIMINATOR high speed shaft.

Output Flange
The output flange simulates the dimensions of a NEMA motor for a specified frame size where the register allows for engagement with the NEMA flange interface found on a gearbox, brake or clutch. The flat section of the output flange allows for fastener clearances on quill type models. There will be no interference with mating components as long as the interface flange diameter does not exceed the output flange diameter on the Double Driver. The same output flange is used on non-motorized units.

Output Shaft
The product is offered with a variety of output shafts. The basic product uses the output shaft of a standard D-90 TYPE-SE unit. Optional output shafts that match NEMA frame size motor shafts (length, diameter and keyway) are also available.

Precision Interface
Double Drivers are manufactured with a register that is sized to the NEMA tolerance of .003 inches. This provides for a precision interface with the driven equipment, which can be very useful especially in motion control applications. The normal DV or DSF product does not offer a register for a precision interface.

Mating with Other Equipment
The Double Driver, with optional NEMA output shaft, can be used to allow the easy mounting of another piece of NEMA C-face equipment between the Double Driver and the driven equipment. A good example of this would be a clutch or brake.

Product Size
The Double Driver is available in sizes 913-935. The NEMA C-face output flange sizes are based on the dimension capabilities and unit ratings. Sizes 913-926 can have a flange to accommodate a 56C/145TC NEMA frame. Sizes 924-935 can have a flange to accommodate a 182TC/215TC NEMA flange.