4BHS/A

Summary

Product identification

The EBARA 4BHS series consists of submersible multistage pumps designed for 4-inch deep wells, operating at 60 Hz. The pumps are available in various models, indicated by a type key that specifies the nominal flow rate in m³/h at maximum efficiency and the number of impellers (e.g., 4BHS/A 4-34 signifies a 4 m³/h pump with 34 impellers).

Operating limits

• Max liquid temperature:
  • 40 °C (Oil Filled Motor)
  • 30 °C (Water Filled Motor)
• Max. Sand content: 50 ppm
• Max. Chlorine ion density: 500 ppm
• Minimum flow rate: Pumps should not be used at a flow rate below 10% of the best efficiency point to avoid overheating.
• Motor maximum immersion:
  • 150 m (Ebara Oil Filled Motor, Ebara Water Filled Motor)
  • 350 m (Franklin Water Filled Motor)
• Starts per hour:
  • 30 (Ebara Motors)
  • 20 (Franklin Motors)

Feed water

• Type of liquid: Clean water
• Temperature for performance curves: 20 °C
• Kinematic viscosity for performance curves: 1 mm²/s (1 cSt)

Electrical

• Frequency: 60 Hz
• Number of Poles: 2
• Rated speed: Refer to each characteristic performance rotation speed as rated speed (approx. 3450 min⁻¹)
• Insulation Class:
  • F (Ebara Oil Filled Motor, Ebara Water Filled Motor)
  • B (Franklin Water Filled Motor)
• Protection degree:
  • IP 58 (Ebara Oil Filled Motor)
  • IP 68 (Ebara Water Filled Motor, Franklin Water Filled Motor)
• Start type: Direct on line
• Voltage:
  • Single phase:
    • 220–230 V ±10% (Ebara Oil Filled Motor)
    • 220–230 V +6%-10% (Ebara Water Filled Motor, Franklin Water Filled Motor)
  • Three phase:
    • 380 V ±10%, 460 V ±10% (Ebara Oil Filled Motor)
    • 380 V -10%, 460 V +6% (Ebara Water Filled Motor, Franklin Water Filled Motor)
• Capacitor: Fitted in starter box (for single-phase motors)
• Overload protection: Fitted in starter box (for single-phase motors), provided by the user (for three-phase motors)
• Power rating:
  • Ebara Motors (4’’):
    • Single phase: 0.55 ÷ 2.2 kW (0.75 ÷ 3.0 HP)
    • Three phase: 0.55 ÷ 5.5 kW (0.75 ÷ 7.5 HP)
  • Franklin Motors (4’’):
    • Single phase: 0.55 ÷ 2.2 kW (0.75 ÷ 3.0 HP)
    • Three phase: 0.55 ÷ 5.5 kW (0.75 ÷ 7.5 HP)
• Power cable:
  • Material: Neoprene (flat cable with watertight connector with integral earthing system)
  • Size: 4x1.5
  • Length:
    • L=1.75 m (up to 1.5 kW)
    • L=2.5 m (for 2.2 and 4 kW)
    • L=4 m (for 5.5 kW)
• Cable Selection: Maximum cable lengths for various power ratings and cable types (e.g., 4x1, 4x1.5, 4x2, 4x2.5, 4x4, 4x6, 4x10, 4x16) are provided in the official PDF, based on a 3% voltage drop at 30 °C ambient temperature. A formula is provided to calculate maximum length for different operating voltages: Lmax = Ltab (Ui / Un)².

Mechanical / hydraulic

• Pump type: Submersible multistage
• Impeller: Closed centrifugal type
• Bearings: Sleeve type - tungsten carbide
• Pipe Connection: UNI ISO 228
  • Suction: N/A
  • Discharge:
    • G1 1/4 (4BHS2 models)
    • G 1 1/2 (4BHS4 models)
    • G 2 (4BHS7-4BHS15 models)
• Materials:
  • Suction casing: EN 1.4301 (AISI 304)
  • Discharge casing: EN 1.4301 (AISI 304)
  • Intermediate casing: EN 1.4301 (AISI 304)
  • Impeller: EN 1.4301 (AISI 304)
  • Pump shaft: EN 1.4401 (AISI 316)
  • Liner ring: EPDM / EN 1.4301 (AISI 304)
  • Valve: EN 1.4301 (AISI 304)
  • "O" ring: NBR
  • Key: EN 1.4401 (AISI 316)
  • Shaft sleeve: Tungsten carbide
  • Axial bearing: Tungsten carbide
  • Radial bearing: Tungsten carbide
  • Friction ring: Tungsten carbide
  • Coupling: EN 1.4301 (AISI 304)
  • Motor bracket:
    • Cast iron nickel plated (Ebara Oil Filled Motor)
    • Cast Iron G20 (Ebara Water Filled Motor)
    • EN 1.4301 (AISI 304) (Franklin Water Filled Motor)
  • Motor casing material: EN 1.4301 (AISI 304)
• Sealing liquid (Motor):
  • Oil type: Marcol 82 (Esso) (Ebara Oil Filled Motor)
  • Propylene Glycol 50% water solution (Ebara Water Filled Motor, Franklin Water Filled Motor)
• Flange mount: NEMA standard
• Applicable standard of test: ISO 9906:2012 – Grade 3B
• Impeller diameter:
  • 4BHS2: 70.5 mm
  • 4BHS4: 72 mm
  • 4BHS7: 74 mm
  • 4BHS15: 72 mm
• Dimensions and Weight: Detailed tables for pump dimensions (H1) and weight, as well as motor dimensions (A, H2) and weight for various models and motor types (Ebara Oil Filled, Ebara Water Filled, Franklin Water Filled, single and three phase) are available in the official PDF. Packing dimensions (X, Y, Z) and weights are also provided.

Performance

Performance ranges and selection charts, including total manometric head (H) in meters versus capacity (Q) in l/min and m³/h, are provided for various pump types (4BHS/A 2, 4BHS/A 4, 4BHS/A 7, 4BHS/A 15). Detailed performance curves for 4BHS2, 4BHS4, 4BHS7, and 4BHS15 models are available in the official PDF. These curves refer to effective speed of asynchronous motors at 60 Hz, 2 poles, measured with clean water at 20 °C and kinematic viscosity of ν = 1 mm²/s (1 cSt). Tolerances are according to ISO 9906:2012 – Grade 3B.

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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 on the project.

Official datasheet (PDF)

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