Construction:

The Candy Differential is engineered from quality materials. The housing is cast from a light weight aluminum for heat dissipation and is coated with a corrosion-resistant, USDA approved epoxy finish. The input and output shafts are stainless steel and are supported by Timken bearings for high radial load capacity. Internally, the spiral-bevel gears are picked as a set and through-hardened for precise, prolonged performance.

Input/Output Configuration:

Either drive shaft on the Candy Differential may be used as the input. The output shaft, however, will always rotate in a direction opposite that of the input. Shaft reversing boxes and right angle boxes may be added to change the direction of rotation.

Control Shaft ratio:

The relationship between the control shaft and the output is 36:1. When the control shaft is held stationary, the input and output shafts counter-rotate at a 1:1 ratio. When one full revolution is applied to the control shaft, while the differential is moving or stopped, the output shaft will advance or retard its rotary position relative to the input by 10 degrees.

The Candy Differential is infinitely adjustable in either direction. The direction of correction is dependent on the direction in which the control shaft is operated.

Position Indicator Dial:

The Candy Differential has a standard, built-in dial which indicates, in degrees, the amount of correction applied to the output shaft. The 360 degree scale provides an accurate, numerical reference of rotary position.

The Lexan protected dial may be used to reset the differential to a previously established setting. By noting a numerical position, an operator can quickly and accurately return to that position during machine setups and changeovers.

Key Lock:

The Candy Differential has a built-in lock which not only prevents unauthorized adjustments, but also ensures that the differential will not drift out of adjustment under severe vibration and load.

It is not necessary to remove the key to adjust and lock the differential. The key is chained to the unit to prevent loss; when security is a problem, the key may be removed. Three keys are provided with each unit.

Sealed-for-Life Lubrication:

The DIFF Series is factory filled to the control shaft level with Mobil SHC 634 synthetic gear oil. These units employ a sealed design to prevent contamination during operation. Under normal operating conditions, the DIFF Series is lubricated for the life of the unit.

Ceiling or wall mount configurations will require simple factory modification for oil level sight gauge and pressure relief valve relocation.

Position/Registration Control:

The Candy Differential is designed to adjust the rotary position of machine components. If a cut-off knife, for instance, is cutting short due to web stretch, repeat variation etc., the location of the tooling may be adjusted on the fly with a turn of the control knob.

When there is a variable or cumulative error, a motor-controlled differential may be used to automatically compensate for the error. Candy Controls can provide or recommend the appropriate control system necessary to monitor and maintain position control.