6BHE / 86BHE

Summary

Product identification

• Product Line: SUBMERSIBLE DEEPWELL PUMPS
• Models: 6-8 BHE
• Manufacturer: EBARA PUMPS EUROPE S.p.A.
• Frequency: 50Hz

Operating limits

• Liquid Temperature: min. -5 °C, max. +60 °C
• Maximum working pressure: 7 MPa
• Maximum ambient temperature:
  • Oil filled motors: 35 °C
  • Water filled motors: 30 °C
• Maximum immersion:
  • Oil filled motors: 150 m
  • Water filled motors: 350 m
• Start / hours:
  • Oil filled motors: 30
  • Water filled motors: 20

Feed water

• Type of liquid: Clean water

Mechanical / hydraulic

Pump Construction (6BHE & 8BHE)

• Impeller: Closed centrifugal type
• Bearing: Sleeve type
• Applicable standard of test: ISO 9906 – Annex A

Pipe Connection - Discharge

• 6BHE 13-20: Rp 2” ½
• 6BHE 32-48-64: Rp 3”
• 8BHE: Rp 5”

Materials (Standard version / L version)

• Discharge Casing: EN 1.4301 (AISI 304) / EN 1.4401 (AISI 316)
• Impeller:
  • 6BHE: EN 1.4301 (AISI 304) / EN 1.4401 (AISI 316)
  • 8BHE: EN 1.4301 (AISI 316) / EN 1.4401 (AISI 316)
• Shaft:
  • 6BHE: EN 1.4057 (AISI 431) / EN 1.4401 (AISI 316) + EN 1.4460 (AISI 329)
  • 8BHE: EN 1.4460 (AISI 329) / EN 1.4460 (AISI 329)
• Stages: EN 1.4301 (AISI 304) / EN 1.4401 (AISI 316)
• Bracket: EN 1.4301 (AISI 304) / EN 1.4401 (AISI 316)
• Diffuser: EN 1.4301 (AISI 304) / EN 1.4401 (AISI 316)
• Outer casing: EN 1.4301 (AISI 304) / EN 1.4401 (AISI 316)
• Suction strainer: EN 1.4401 (AISI 316) / EN 1.4401 (AISI 316)
• Motor Casing material: EN 1.4301 (AISI 304)
• Motor bracket: Cast iron nickel plated / EN 1.4301 (AISI 304)

Detailed material breakdowns for internal components (e.g., discharge head, valve, O-rings, screws, various rings, sleeves, and bushings) are provided in the "CONSTRUCTIONS" section of the PDF, with differences between standard and L versions. See the official PDF for exact tabulated values.

Electrical

Motor Types

• Submersible oil filled (type OY)
• Submersible water filled (type WY)

Motor Brands

• Sumoto
• Franklin

Motor Sizes

• 4”, 6”, 8” (depending on model and motor type)

General Motor Specifications

• No. of Poles: 2
• Rotation speed: Refer to each characteristic performance rotation speed at rated speed
• Frequency: 50 Hz
• Start type: Direct on line
• Over load protection: User to provide

Insulation Class

• Oil filled motors (Sumoto): F
• Water filled motors (Sumoto 6BHE): B
• Water filled motors (Sumoto 8BHE, Franklin 6BHE, Franklin 8BHE): F

Protection Degree (CEI EN 60034-5)

• Oil filled motors: IP 58
• Water filled motors: IP 68

Power Rating (kW / HP)

• 6BHE:
  • Oil filled (Sumoto 4"): 2.2 ÷ 7.5 kW (3.0 ÷ 10 HP)
  • Oil filled (Sumoto 6"): 4 ÷ 30 kW (5.5 ÷ 40 HP)
  • Water filled (Franklin 4"): 2.2 ÷ 7.5 kW (3.0 ÷ 10 HP)
  • Water filled (Franklin 6"): 4 ÷ 45 kW (5.5 ÷ 60 HP)
  • Water filled (Franklin 8"): 55 kW (75 HP)
• 8BHE:
  • Oil filled (Sumoto 6"): 7.5 ÷ 30 kW (10 ÷ 40 HP)
  • Water filled (Sumoto 6"): 7.5 ÷ 37 kW (10 ÷ 50 HP)
  • Water filled (Franklin 8"): 45 ÷ 110 kW (60 ÷ 150 HP)

Voltage

• Oil filled motors: 380-415 ±10% V
• Water filled motors: 380-415 –10% +6% V

Performance and Selection

Extensive selection charts and performance curves are provided for various 6BHE and 8BHE models. These charts detail specific pump types (e.g., 6BHE 13-5, 6BHE 13-61, 8BHE 77-2, 8BHE 95-23) with corresponding power ratings and head values at different flow rates. See the official PDF for exact tabulated values and performance curves.

Performance Curve Specifications

• Tolerances: According to ISO 9906 Annex A
• Curves refer to: Effective speed of asynchronous motors at 50 Hz
• Measurements were carried out with: Clean water at 20 °C, kinematic viscosity of ν = 1 mm²/s (1 cSt)
• NPSH curve: An average curve obtained in the same conditions of performance curves.
• Recommended working range: Indicated by continuous curves. Dotted curves are for guidance only.
• Minimum flow rate: Pumps should not be used at a flow rate below 10% of best efficiency point to avoid the risk of overheating.

Symbols Explanation

• Q = volume flow rate
• H = total head
• P₂ = pump power input (shaft power)
• η = pump efficiency
• NPSH = net positive suction head required by the pump
• MEI = minimum efficiency index

Minimum Efficiency Index (MEI) The MEI is a measure of the quality of a pump size with respect to its mean efficiency, based on hydraulic efficiency and head at the best efficiency point. The MEI is based on the full impeller diameter. Operating these pumps with variable duty points may be more efficient and economic when controlled, for example, by a variable speed drive that matches the pump duty to the system.

Dimensions and Weight

Detailed tables for dimensions (L1, L2, Lt, D in mm) and weight (kgf) are provided for each pump type (e.g., 6BHE 13-5 to 6BHE 13-61, 6BHE 20-6 to 6BHE 20-60, etc.) for both 4" and 6" motors. See the official PDF for exact tabulated values.

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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. Contractual data must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror