KRACHT - Model KF 2.5...630 -Gear Pump

The noise optimized version of the KF pump is markedwith the special number 197 at the end of the type key.Pumps with the special number 197 are built as pumps incombination with an electric motor or as mountedpumps. The pump in combination with an electric motor(Fig. 1) does not have an outboard bearing, so it has tobe driven via an elastic coupling. The mounted pump(Fig. 2) comes equipped with an outboard bearingto ab-sorb the centrifugal forces such as those which arisewhen using a flying pinion. Pumps for electric motordrives and mounted pumps are sealed at the shaft endusing a lip-type shaft seal.

• Centrifuge construction, Coating machines. Compressors
• Engine construction
• Filling stations, Filter systems
• Generator construction
• Heat transfer systems, Heavy electrical machines
• Lubricant manufacturers, Lubricating oil systems
• Machine-building industry, Machine tools. Manufacture of apparatus, Marine engine construction, Metal-forming machines, Metering systems
• Paint industry, Plain metal bearing production. Printing machines, PUR machinery
• Refrigerators, Rubber and tire manufacturing
• Tank plant construction, Transmission building Turbine construction
• Vacuum machinery
• Waste oil
• disposal
• transport
• treatment

• Adhesives, Antifreeze
• Bore oils
• Cutting oils
• Diesel oils. Drawing compound
• Emulsions
• Fuel oils, L, EL, H
• Gear oils. Grease
• Hardening oils, Heat transfer media. Heavy oils, Hydraulic fluids
• Isocyanate
• Lubricating oils, Lacquers
• Motor oils
• Paint, Paraffins, Plastics, Polyols Printing inks. Processing oils
• Resins, Rolling oils
• Waste oils, Waxes

• Gear pumps KF are used for pumping a wide variety of fluids.
• Gear pumps KF are distinguished especially by their wide range of variants which are assembled as required on the modular principle and also permit subsequent upgrade.
• The pumps are also suitable for media with low lubricating properties.
• The standard housing sections are of grey cast iron.
• The gear units are manufactured from high-strength case-hardening steel, hardened and mounted in special multi-compound plain bearing bushes.
• The standard drive shaft is sealed by single radial lip-type seal.
• All pump sizes incorporate helical tooth system. This feature, combined with special gear geometry, results in extremely low noise levels and reduced pressure pulsation.

• The fluids should ensure a certain minimum lubricating properties, should not contain solids and should be chemically compatible.
• Avoid dry operation.
• The pumps may only be operated in the specified direction of rotation, as otherwise the shaft seal will be destroyed.
• In order to prevent excessive overpressure, a safety
• valve should bo provided in the system or on the pump.
• The pressure relief valve attached to the pump may only be used as safety valve for short-term operation.
• A separate pressure relief valve with return line to the reservoir must be foreseen, if a partial discharge flow has to be drained over a prolonged period.