Pentalift Blog - Custom Lifts
November 20, 2015, 5:12 pm - Dock lifts can be installed in many locations, and will usually have lift/lower controls readily available for the operator. Some are in a restricted, controlled access applications and the number of personnel permitted to operate the equipment are limited. Some dock lifts are installed outside of the building at a retail or institutional facility, where it is necessary to ensure that they cannot be operated by the general public. To prevent unauthorized use, the controls can be removable, key operated or stored inside the building on a coil cord. The application dictates the most suitable dock lift controls to use. Contact your Pentalift Sales Representative for more information.
November 8, 2015, 9:43 am - The hydraulic cylinder is the primary component of any hydraulic lift system. Pentalift's exclusive PentaFlow cylinder design ensures long cylinder life, reduces maintenance, and eliminates oil spills. The PentaFlow cylinder is completely sealed from the surrounding atmosphere and all components are continuously bathed in fresh oil. Contamination and deterioration of the cylinder cannot occur. When the cylinder reaches full extension, the bypass valve opens and allows oil to flow through the piston to the rod side of the cylinder, out the port, and back to the reservoir. This prevents the cylinder from dead ending and building high stresses in the cylinder, equipment structure, and hydraulic system. Air in the cylinder is automatically ejected through the bypass valve. The need for manual bleeding which often results in oil spills is eliminated. Contact your Pentalift Sales Representative for more information.
October 31, 2015, 7:52 am - The required lifting capacity of the dock lift determines the diameter and stroke of the hydraulic cylinders, and the number cylinders to be used. Once the cylinder requirements have been determined, then it simply becomes a matter of the volume of hydraulic oil that is pumped into the cylinders, more volume = faster lift times. Think of it this way; if it takes 2 minutes to fill a bucket with water using one garden hose and you want to fill it faster, add a second hose to the bucket. It will now fill in 1 minute. Back to dock lifts, to fill the lift cylinders more quickly, the power unit's hydraulic pump size is increased to push a higher volume oil. The horse power of the motor often needs to be increased to turn the bigger pump. Contact your Pentalift Sales Representative for more information.
September 30, 2015, 9:06 am -
All requests for lift tables can be classified into two general categories at the most basic level...either requests that fall within the characteristics of Pentalift's standard Pre-Engineered Products, or requests for unique and custom pieces of equipment. Generally there is no requirement for an approval drawing when a customer is seeking a piece of equipment from Pentalift's Pre-Engineered Products. When a custom piece of equipment is required, then an approval drawing will need to be reviewed and signed by the customer before proceeding.
The approval drawing is a visual representation of specified equipment that is generated by Pentalift Engineering after quote and design stages are complete, and once there is a commitment to proceed to order. The drawings will reflect all of characteristics for the custom equipment that were included on the quote. Approval drawings will always include one drawing of the equipment itself, but there will often be addition drawings to illustrate the associated pit, or the electrical schematic, or the hydraulic schematic, etc. Depending on the significance and complexity of the customization, generating approval drawings can take between 2 and 5 business days on average. Once the drawings are generated, they will be sent to the customer for review and approval before the order will be formally entered in production schedule. Contact your Pentalift Sales Representative for more information.
September 9, 2015, 2:42 pm - Whether you are looking at a simple rotating platform or at a table capable of lifting and rotating, there are several options that seem to be routinely requested or discussed. The most commonly requested item is some way to prevent the table from rotating when desired. Pentalift can offer several methods to do this. The simplest and least expensive would be a Rotating Top Brake. This uses friction to prevent the table from moving. Other brake options would be a Rotator Stop that includes a pin that can be dropped in at mechanically prevent the table from moving, or 90° spring detents, which automatically slips into position at each 90° turn and needs additional force to be pushed beyond the detent. After braking options, the next most commonly requested adder for rotating platforms would be powered rotation. If you are seeking powered rotation, Pentalift will need to know whether you wish to rotate clockwise, counterclockwise, or both directions. While braking options and powered rotation are the most common requested options, Pentalift specializes in custom equipment and you should discuss your application with a Pentalift Sales Representative for advice about your specific application.