Construction:

The Hubs are manufactured from low carbon steel and have a phosphate coating. The Adjusting Ring is also carbon steel with a black oxide coating. Applications involving hostile environments, including wash down conditions, may not be suitable for the standard materials. Please consult the factory for recommendations, including the possibility of incorporating a protective boot seal.

Locking Screw:

The Phasing Hub is essentially self-locking in continuously rotating applications involving relatively low speeds and torques. In such applications, it may not be necessary to seat the locking screw located on the Adjusting Ring. However, intermittent applications involving high speeds and torques will require the use of the locking screw to maintain a desired phase setting. Once the locking screw is tightened, there is no backlash in the Phasing Hub's tooth mesh.

Direction of Phase Adjustment:

As discussed in the previous sections, the Phasing Hub consists of two Hubs with different numbers of teeth. One Hub is stamped and referred to as the "S" Hub, while the other is stamped and referred to as the "D" Hub. The graduated scale (available for the PH 1000, 2500 and 5000) is mounted to the Adjusting Ring around the "S" Hub.

When the "S" Hub is driven, rotation of the Adjusting Ring will cause the output to change its rotational position in the same direction as the rotation applied to the Adjusting Ring. If the Adjusting Ring is rotated in the clockwise direction, the output element will correct in the clockwise direction.

If the "D" Hub is driven, the output shaft will correct in a direction opposite to the rotation applied to the Adjusting Ring. If the Adjusting Ring is rotated in the clockwise direction, the output element will correct in the counterclockwise direction.

Lubrication:

The Phasing Hub is factory lubricated and will not require further maintenance under normal operating conditions. If the Phasing Hub is in a hostile environment, Candy recommends a periodic lubrication schedule.

To lubricate the Phasing Hub, loosen the locking screw and remove the retaining rings from each side of the Adjusting Ring. Remove both Hubs from the Phasing Hub and generously grease the teeth with a multi-purpose lubrication. Reassemble in the reverse order, making sure that both Hubs and bores are concentric with one another. Caution, it is possible to assemble one of the Hubs off center by one tooth.

Note: The Phasing Hub is not to be used as a torque multiplier nor is it designed to accommodate shaft misalignment.