Presto HPK 50 BSK, Projekt KCR

Year of construction 2009, pressing force 50 tons

A medium-sized recycling company was looking for a small press with a large feed hopper that could be filled with a wheel loader and excavator. The cardboard bales should weigh 500 kg and a throughput of approx. 5 t per hour should be achieved. These are requirements that fit exactly to a Presto HPK 50 BSK baler.

  • The Presto type HPK 50 BSK is a short design machine with variable hydraulic oil tank construction.
  • With dimensions of 6,820 mm length, 1,950 mm width and 2,160 mm height, it has an extremely compact design.
  • The bale size is 1,100 x 700 mm, the length is variable. With this you can load 4 bales on top of each other onto a Megaliner.
  • The hydraulic oil tank was completely emptied, cleaned, oil and air filters replaced and the hydraulic tubes checked for age and damage.
  • On all balers, the twist unit together with the needle guide form the heart of every baling system and are always dismantled and disassembled.
  • In particular, the swivel device with the hydraulic hoses, the bearings of the chain wheels, the chains and the tensioning device are subject to wear and must be overhauled.
  • In addition, the needle guides with needles, the twist unit and the cover were removed from the press channel and overhauled.
  • Here the press ram with all plastic slide plates and the main hydraulic cylinder was removed and further disassembled for overhauling.
  • The needle guide rails, here painted red (under the press floor), are fitted with new needles after overhauling and reassembled.
  • Frames and attachments were checked for damage and individual parts were straightened, welded and replaced.
  • The strength of the base plate and the side swings of the press channel were checked.
  • The frame bridge is measured for deformation and, if necessary, renewed, inlet tracks at the wire feedthroughs are welded and smoothed.
  • The wire coil box for the 40 kg coils was straightened, the hydraulic cylinder from the press channel was disassembled checkt and the sealing kit was replaced.
  • The shaft from the cover of the press channel was dismantled, de-rusted, deburred, deflection rollers made movable and reassembled.
  • The twist unit was completely disassembled, all chain wheels, knives and counter knives were checked and some studs were replaced.
  • The mechanics of the swing unit were overhauled and readjusted, the spring tension checked and the seal kit of the hydraulic cylinder replaced.
  • All bearings and the chain were replaced and the entire twist unit reassembled and adjusted.
  • All cables from the switch cabinet to the machine have been checked for traces of rat bites and other damage.
  • After an overhaul, every machine is tested in our company during running operation, with the use of materials.
  • Every machine is put through its paces by our plant manager Mr. Barels. A machine leaves our factory only after it has been released by him.
  • As far as possible, the same wire quality and wire thickness is used for testing and setting that the customer would like to use later.
  • All hydraulic lines, screw connections, hydraulic cylinders and valves are checked for leaks after the test.
  • The machine is also loaded as far as possible with an excavator, wheel loader or a conveyor belt, as the customer wishes to carry out his filling later.
  • The press was delivered to our customer and temporarily installed under a roof in the outdoor area. The move to a new hall will take place shortly.
  • At present, the loading is still carried out with an excavator. In the new hall, the machine is fed via an underfloor conveyor belt.
  • Dimensionally stable bales weighing up to 650 kg are a very good result for this light baler.
  • Presto is one of the few manufacturers to produce extremely reliable, heavy bales with this short and lightweight design.
  • The hydraulic unit can be mounted either on the press frame (as shown in the photo) or under the frame on the floor.
  • Heavy, well stackable bales, with a transport capacity of 24 t per truck. Our customer is satisfied, as the OBM assembly team.
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