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High Pressure Gear Pumps KP1

Brand: KRACHT GmbH

Accordingly to its configuration – the Design Principle is illustrated by the Sectional Figure – the KRACHT external gear type pump series KP1 is to be classified into the category of the so-called gland type bearing pumps. 

All essential functional parts as the gearing and the gland bearings are located in an aluminum housing (cast iron on request possible) manufactured of a high strength extrusion alloy which are closed on each side by an end cover or by a flange mounting cover respectively. 

The gearing of case hardening steel in surface hardened condition consists of the driving shaft pinion and the driven shaft pinion. 

Highest manufacturing quality is assured by grinding and honing of the tooth flanks. The surfaces of the journals are superfinished.

Specifications

Brand

Housing

  • aluminium

Bearing

  • double-gland bearing with multicomponent plane bearing bushes

Journals and Gears

  • case hardening steel acc. to DIN 17210 surface hardened and ground

Seals

  • NBR rotary shaft lip type seal ϑ ≤ 90° C (PU-Seal for pressure field)
  • FKM rotary shaft lip type seal ϑ ≤ 100° C (PU-Seal for pressure field)

Mounting

  • flange and foot-Type

Pipe Connection

  • flange type, threaded flange on request

Direction of Rotation

  • clockwise or anticlockwise

Fitting Position

  • Optional

Ambient Temperature

  • -20° to 60° C

Operating Pressure Inlet Port

  • pe min = - 0.4 bar (vacuum)
  • pe max. = 2 bar

Operating Pressure Short Time

  • pe max. = 5 bar

Fluid Temperature Range

  • Maximum 90° C for NBR rotary shaft lip type seal
  • Maximum 100° C for FKM rotary shaft lip type seal

Viscosity

  • 10 to 600 mm²/s

Recommended oil Cleanliness

  • Class 19/16 acc. to ISO /DIS 4406
  • Class 10 acc. to NAS 1638

Recommended Filtration

  • filter with filtration quotient β25 ≥ 75 for … 300 bar β40 ≥ 75 for … 100 bar

Recommended viscosity Range

  • 30 to 45 mm²/s

Hydraulic fluids

  • Mineral oil acc. to DIN 51524/25
  • engine oil acc. to DIN 51511
  • bio-oils of type „HEES“ can be used up to 70° C, Max. pressure must be reduced minus 20 % (use only on request)

Documentation

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