Gravity Conveyor Maintenance

Jan
14

Maintenance on gravity conveyors is relatively straightforward. Gravity conveyors are much easier to service and repair than power conveyors as there are only a few parts to inspect. The focus of the maintenance checks should be on the frames, rollers, skatewheels, supports, and any accessories that are attached to the conveyor. In general, the frames, rollers and supports should be inspected for damage that may reduce their capacity. The rollers must also be kept free from foreign material that would prevent them from turning freely.

The following maintenance recommendation is based upon typical use which consists of 40 hours of operation per week. If multiple shifts or extreme environmental conditions are present, additional maintenance and service checks should be performed. During the first 40 hours of operation, all installed equipment should be frequently inspected for correct function. Afterwards, a suitable maintenance program should be established and maintained. A service log that shows dates, information on maintenance performed and the person(s) who performed the maintenance is recommended for each conveyor unit.

Note of caution, the conveyors should not be in use during the scheduled maintenance unless specifically instructed to do so by the installer or manufacturer.

Weekly Maintenance: The rollers should be physically inspected for proper position, condition and operation. Bolted connections should be checked for tightness and the physical condition should be inspected for damage.

Monthly Maintenance: All supports and hangers should have the fasteners checked for correct tightness and the physical condition of the supports and hangers should be inspected for any damage. Any accessories attached to the conveyor unit should also be inspected in a similar manner.

Trouble Shooting Gravity Conveyors

Problem

Reason

Solution

Products do not move

Rollers do not rotate easily

Replace damaged rollers

Package bottom is of poor quality

Add a slip sheet to improve flow

Inadequate slope

Increase the infeed height and/or lower the discharge height

Products do not flow straight

Frame is not square

Loosen bolts on cross braces, square frame, retighten all cross brace bolts

In summary, the maintenance of non-powered gravity conveyor is fairly simple. Whether you're working with gravity skatewheel conveyors or gravity roller conveyors, it is important to thoroughly check the frames, rollers, supports and all accessories at regularly scheduled intervals to ensure there is no damage, fasteners are tight, and rollers and wheels rotate freely. With a proper maintenance schedule your gravity conveyor system will perform as intended for many years.