Pentalift Blog - Dock Levelers
May 6, 2016, 8:41 am - That’s a very common question that is raised when decisions are made related to dock leveler selection. Mechanical dock levelers use a series of springs and levers to raise the platform and extend the lip assembly. The mechanical dock leveler is then “walked down” into position on the delivery truck bed. Hydraulic dock levelers, though structurally the same, use a push button control to operate the dock leveler. When the button is pushed, an electric motor starts and a hydraulic cylinder is used to raise the platform. A second hydraulic cylinder is used to extend the lip assembly. When the dock attendant releases the control button, the dock leveler automatically lowers into position on the truck bed. Mechanical dock levelers are more cost effective at time of purchase. Hydraulic dock levelers cost more to purchase, however require less maintenance and are more ergonomically accepted. Contact a Pentalift Sales Representative for more information.
April 22, 2016, 12:06 pm - If the overhead door is closed and locked, a mechanical dock leveler will not damage the door when the dock leveler is activated. An air powered dock leveler or hydraulic dock leveler will cause extensive damage to the closed and locked overhead door if operated. To address this concern for potential damage, both air powered and hydraulic dock levelers can be ordered with an optional overhead door interlock switch. A striker plate on the door activates a wall installed limit switch when the door is opened. Only when the limit switch is activated, will the dock leveler operate. Contact a Pentalift Sales Representative for further information.
March 31, 2016, 11:01 am - Loading dock information regularly references TENV Electric Motors and TEFC Electric Motors. What is the difference? TENV stands for Totally Enclosed Not Ventilated Electric Motors. These are used in a wide variety of smaller horsepower applications. This type of electric motor radiates its excess heat through the body of the motor. It is commonly built with special high temperature insulation. TEFC stands for Totally Enclosed, Fan-Cooled Electric Motor. These are constructed with a small fan on the rear shaft covered by housing. The fan is used to assist in cooling the electric motor. Dock levelers commonly use TENV motors and dock lifts commonly use TEFC motors. Contact a Pentalift Sales Representative for further information.
March 9, 2016, 1:59 pm - Hydraulic conversion kits are used to convert a structurally sound, mechanically activated dock leveler to full hydraulic operation. A hydraulic conversion kit consists of a hydraulic lift cylinder, a hydraulic lip cylinder, electric power unit, control station, and all of the brackets required. It typically takes a qualified technician 3 to 4 hours to complete the conversion. Hydraulic conversions are available in any single phase or three phase voltage. Contact your Pentalift Sales Representative for additional information.
February 29, 2016, 10:00 am - Choosing the right dock leveler can be difficult. The first question you must ask yourself is whether you’re looking for a mechanical or hydraulic dock leveler. Both options have their pros and cons. This article will help you understand whether a mechanical or hydraulic dock leveler is best suited for you and your needs. Source:directindustry.com […]