AU

Summary

Product Identification

The KSB AU series comprises horizontal self-priming centrifugal pumps, designed for pumping dirty and sandy water, or water with suspended solids. They feature an open or semi-open impeller with wide step and plate adjustment. Sealing is achieved by a mechanical seal. The robust design allows for driving by electric or explosion motors, with ATEX-compliant versions available. The pump casing has axial suction and radial impulsion, with a single-stage semi-open impeller.

Fields of application include:

• Water and sea water cooling systems
• Bilge
• Ballast
• Flushing and fire-fighting
• Emergency fire-fighting
• Sea water transfer
• Training of mine and quarry faces
• General and local floods

Key benefits:

• Self-priming: Only requires the pump casing to remain filled with fluid.
• Robust: Features oversized shafts and bearings.
• Versatile: Available in bare shaft, monobloc, and pumpset on base plate versions, suitable for electric, gasoline, or diesel engines.
• Multiple accessories: Options for fixed installation base plates, manual trolleys, trailers with pneumatic wheels, and towing brakes.
• Waste water pumping: Semi-opened impeller allows for a large ball passage, up to 68 mm.

Operating Limits

• Capacity, max: 600 m³/h (at 50 Hz and 60 Hz)
• Head, max: 52 m (at 50 Hz and 60 Hz)
• Operating temperature, max: 120 ºC (at 50 Hz and 60 Hz)
• Operating temperature, min: -10 ºC (at 50 Hz and 60 Hz)
• Operating pressure, max: 10 bar (at 50 Hz and 60 Hz)
• Operating speed, max: 3000 rpm (at 50 Hz), 3600 rpm (at 60 Hz)
• Painted surface maximum temperature: 60 ºC

Feed Water

The pumps are designed for dirty and sandy water, or water with suspended solids.

• Solid sizes: Varies by pump size, ranging from 6 mm to 45 mm. See the official PDF for exact tabulated values per model.
• Percentage of solids: ≤ 3%
• Solids concentration: ≤ 4 g/l

Electrical

• Standard Motor: IP-55 IEC electric motor.
• Construction:
  • Non-monobloc pumps: IM 1001 (IM B3) construction.
  • Monobloc pumps: IM 3001 (IM B5) construction.
• Combustion Motor Option (Monobloc variant):
  • AU-M3/18/D: Hatz 1B20, 3.1 kW (at 3000 rpm)
  • AU-M50/25/D: Hatz 1B40, 6.8 kW (at 3000 rpm)

Mechanical / Hydraulic

Materials: The AU series is available in several material variants (00, 01, 02, 03, 05), with components made from:

• Pump casing (101): EN-GJL-250 (Grey cast iron, EN 1561: JL1040 (GG-25)), CC491K-GS (Bronze, RG-5), A 351 Gr CF8M (Stainless steel, CF8M (ASTM A 351))
• Casing cover (161): EN-GJL-250, CC491K-GS, A 351 Gr CF8M
• Shaft (210): 1.4404 (Hot rolled chrome nickel molybdenum steel, 1.4435, AISI-316L)
• Impeller (230): EN-GJL-250, CC480K-GS (Bronze, SN-10, CuSN10 -C-GS), A 743 Gr CF8M (Stainless steel, CF8M (ASTM A 743))
• Bearing pedestal (331): EN-GJL-250
• Wear plate (135): EN-GJL-250, CC493K-GC (Bronze, RG-7, CuSn5ZnPb5-C), A 743 Gr CF8M

Shaft Seal:

• Standard: Simple mechanical seal.
• Design: DIN K (according to EN 12756 (DIN 24960)), ITUR 5H2, ITUR 5, or ITUR 2.
• Standard Material Combination: Q1BPGG, VBPGG, U3U3VGG.
• Size Ø: 20 mm, 25 mm, 28 mm, 40 mm, 50 mm, depending on pump size.

Bearings / Lubrication:

• Monobloc (M) construction: Does not have friction bearings.
• Non-monobloc construction: Features oil or grease lubricated bearings, depending on pump size.
  • Lifelong lubrication: AU-1,5/2/3, AU-65
  • Oil lubrication: AU-50, AU-100, AU-200
  • Grease lubrication: AU-80, AU-150
• Bearing Types: Deep groove ball bearings (6304, 6206, 6305, 6309, 6310), angular contact ball bearings (3206, 3305, 3309, 3310). Specific types include 2RS C3, C3, Z C3, and RS C3.

Coupling:

• Monobloc (M) construction: Rigid coupling.
• Non-monobloc construction: Flexible coupling.
• A coupling protector is provided as standard.

Nozzle Connections (DN):

• Suction and Discharge:
  • 1.5” (AU-M1,5/10, AU-1,5/10)
  • 2” (AU-M2/14, AU-2/14)
  • 3” (AU-M3/18, AU-3/18)
  • 50 mm (AU-M50/20, AU-M50/25, AU-50/20, AU-50/25)
  • 65 mm (AU-65/10, AU-65/18)
  • 80 mm (AU-80/15, AU-80/22)
  • 100 mm (AU-100/30)
  • 150 mm (AU-150/--)
  • 200 mm (AU-200/--)
  • Flanges typically conform to EN 1092 PN10.

Dimensions and Weight: Dimensional drawings and tables for various monobloc and standard AU pump sizes, including electric and diesel-driven versions, are available in the official PDF. These tables provide detailed measurements (in mm) and approximate weights (in kg) for specific models. See the official PDF for exact tabulated values.

Certification

• Certified quality management according to ISO-9001.
• ATEX Pump versions are available depending on the application; consult KSB ITUR.

Pump Surface

• Standard Coating: Phosphate primer (10-15 microns thickness) and an enamel finish coat (40-60 microns thickness).
• Total Minimum Thickness: 50 microns.
• Final Coat Colour: Blue RAL 5002.
• Maximum Painted Surface Temperature: 60 ºC.
• Other coatings are available upon request.

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the complete OEM PDF datasheet. Contractual data must always match the specific OEM PDF revision used for the project.

Official datasheet (PDF)

Lenntech datasheet mirror