E6-8 KX 60Hz Borehole Pumps

Summary

Product identification

Caprari E6-8 KX series electric borehole pumps are designed for 60 Hz operation.

Product codes follow a specific structure:

• Electric pump code example: E6KX17/8+MCR455-8V
  • E.KX: Series
  • 6 or 8: DN in inch
  • 17, 46, 77: Hydraulic identification number
  • -4, -6, -8: Coupling flange motor
  • /8, /10: Number of stages
  • -V: Unit used at 60 Hz
  • -W: Unit used at 50/60 Hz
• Submersible motor identification code example: MCR455-8
  • MC: Submersible motor
  • R: Axial thrust
  • 4, 6, 8: Nominal diameter in inches
  • 55, 20, 90: Nominal power in CV
  • /3: Generational code (for MPC motors)
  • A: Constructive variant (for MPC motors)
  • -8: Constructional features of electric motor

Operating limits

• Maximum submersion: 150 m
• Maximum operating time (outlet closed, pump submersed): 3 min
• Maximum liquid temperature:
  • MC4.. motors: 30°C
  • MPC6.. motors: 30°C
• Water speed outside motor jacket:
  • 0.08 m/s for 4" motors
  • 0.5 m/s for MPC6 motors

Feed water

• Suitable for raising chemically and mechanically non-aggressive water.
• Maximum content of solids (silt hardness and granulometry): 50 g/m³
• Liquid density: 1 kg/dm³
• Kinematic viscosity: Not more than 1 mm²/s

Mechanical / hydraulic

The hydraulic performance characteristics are guaranteed as conforming to standard UNI/ISO 9906 Grade 3B.

Pump construction and materials

• Valve casing: Stainless steel
• Conical valve: Stainless steel
• Shaft: Stainless steel
• Shaft sleeve: Stainless steel
• Shaft bearing bush: Silicon
• Impeller: Stainless steel
• Diffuser: Stainless steel
• Cable guard: Stainless steel
• Coupling: Stainless steel
• Suction support: Stainless steel
• Strainer: Aluminium/rubber (E6KX), Stainless steel (E8KX)
• Bolts and nuts: Stainless steel

Motor construction and materials

• Shaft: Stainless steel
• Sand guard: Rubber
• Upper bracket: Cast iron (MC. 4, MPC6/3A, MPC8/1A), Stainless steel (MPCW6/3A, MPCW8/1A)
• Mechanical seal: Ceramic/graphite or Silicon carbide/ceramic (MC. 4, MCH. 4, MCK. 4, MCR. 4), Silicon carbide/silicon carbide (MPC6/3A, MPC8/1A, MPCW6/3A, MPCW8/1A)
• Upper ball bearing: Steel (MC. 4, MCH. 4, MCK. 4, MCR. 4)
• Rotor: Electrical steel
• Stator: Electrical steel
• Stator shell: Stainless steel
• Winding: Copper (MC. 4, MCH. 4, MCK. 4, MCR. 4), PPC (MPC6/3A, MPC8/1A, MPCW6/3A, MPCW8/1A)
• Lower ball bearing: Steel (MC. 4, MCH. 4, MCK. 4, MCR. 4)
• Lower bracket: Aluminium (MC. 4, MCH. 4, MCK. 4, MCR. 4), Cast iron (MPC6/3A, MPC8/1A), Stainless steel (MPCW6/3A, MPCW8/1A)
• Diaphragm: Rubber
• Diaphragm cover: Stainless steel (MC. 4, MCH. 4, MCK. 4, MCR. 4, MPCW6/3A, MPCW8/1A), Cast iron (MPC6/3A, MPC8/1A)
• Mechanical seal cover: Technopolymer (MPC6/3A, MPC8/1A, MPCW6/3A, MPCW8/1A), Cast iron (MPC8/1A, MPCW8)
• Bearing: Graphite (MPC6/3A, MPC8/1A, MPCW6/3A, MPCW8/1A)
• Thrust-bearing: Stainless steel/Synthetic compound (MPC6/3A, MPC8/1A, MPCW6/3A, MPCW8/1A)
• Thrust-bearing foot slip: Cast iron (MPC6/3A, MPC8/1A, MPCW6/3A, MPCW8/1A)
• Shaft sleeve: Steel (MPC6/3A, MPC8/1A, MPCW6/3A, MPCW8/1A)
• Bolts and nuts: Stainless steel

Performance and dimensions

Performance ranges (Head vs. Capacity) are provided for E6KX and E8KX series at 2 Poles / 60 Hz. Overall dimensions and weights, along with detailed operating data (Motor power, Head, Capacity, NPSH, Check valve Ø), are tabulated for various pump types (E6KX17, E6KX30, E6KX46, E6KX60, E8KX77, E8KX95).

See the official PDF for exact tabulated values and performance curves.

• Check valve connections: Rp2 1/2, Rp3, Rp4, Rp5. Available with NPT thread.
• Minimum Efficiency Index (M.E.I.): ≥ 0.40
• Horizontal installation may be available without conical valve, on request, or require contacting the sales organization.
• Temperature monitoring devices for submersed electric motors 4" ÷ 8" are available (see Accessories section in the full PDF).

Electrical

• Standard supply voltage: THREE-PHASE/60 Hz
• Direct starting: 460 V for all power outputs (MC/MPC/MAC…-8 series)
• Inverter compatibility: All motors are suitable for inverter operation, provided a filter is installed between the motor and inverter to attenuate voltage gradient (contact sales network for details).
• Available on request (THREE-PHASE/60 Hz supply voltage):
  • 4" motors:
    • MC...-6: 265 V up to 7.5 kW
    • MC...-8: 460 V up to 7.5 kW
    • Other voltages and frequencies
    • Special materials for aggressive water
  • 6" motors:
    • MPC…-8: 460 V up to 37 kW
    • MPC…-9: 460/796 V up to 37 kW
    • Other voltages and frequencies
    • Special materials for aggressive water
  • MPC6../3A: Standard motor
  • MPC6../3K: Submersible motor with high efficiency
• Permissible voltage variations (for stated supply voltages without brackets):
  • 4"; 6": (220 V), 230 V, (240 V) ± 10%
  • (380 V), 400 V, (415 V) ± 10%
  • 4"-6": For other voltages and frequencies ± 5%
• Tolerances on operating data: According to International Standards IEC 34-1.
• Thermal probes: On 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 official OEM PDF. For contractual data, always refer to the specific OEM PDF revision used on your project.

Official datasheet (PDF)

Lenntech datasheet mirror