MMD

Summary

Product identification

Ebara MMD series 2-pole centrifugal pumps, 50 Hz.

Operating limits

• Liquid Handled: Clean water
• Temperature:
  • Minimum: -10 °C
  • Maximum: +90 °C
• Maximum working pressure: 1 MPa
• Pumps should not be used at a flow rate below 10% of the best efficiency point to avoid the risk of overheating.

Feed water

Performance curves and measurements are based on clean water at 20 °C with a kinematic viscosity of ν = 1 mm²/s (1 cSt).

Mechanical / hydraulic

• Construction: Closed centrifugal type impeller
• Shaft seal type: Mechanical seal
• Bearing: On the motor
• Pipe Connection:
  • Suction: PN16 - UNI 2223-29
  • Discharge: PN16 - UNI 2223-29
• Flange: UNI 2236
• Counterflange (On request): UNI 2247
• Materials:
  • Casing: CAST IRON
  • Impeller: CAST IRON
  • Shaft seal: SiC/SiC/NBR
  • Shaft: AISI
  • Bracket: CAST IRON
  • Motor casing: Aluminum (up to MEC 160), Cast iron (MEC 180 and above)
• Mechanical Seal Components (Max temperature: +90 °C):
  • Self driving spring: AISI 316
  • O Ring: NBR
  • Frame: AISI 316
  • Rotary seal ring: SiC
  • Stationary sealing: SiC
• Applicable standard of test: ISO 9906 – Annex A
• Minimum Efficiency Index (MEI): > 0.40 for all listed models. The MEI is based on the full impeller diameter.
• Impeller Diameters (examples):
  • MMD 65-250/22 (22 kW): 220x10 mm
  • MMD 65-250/30 (30 kW): 240x10 mm
  • MMD 65-250/37 (37 kW): 250x10 mm
  • MMD 80-160/11 (11 kW): 140x27 mm
  • MMD 80-160/15R (15 kW): 150x27 mm
  • MMD 80-160/15 (15 kW): 160x27 mm
  • MMD 80-200/18,5 (18.5 kW): 180x20 mm
  • MMD 80-200/22 (22 kW): 190x20 mm
  • MMD 80-200/30 (30 kW): 205x20 mm
  • MMD 80-200/37 (37 kW): 209x20 mm
  • MMD 80-250/37 (37 kW): 226x17 mm
  • MMD 100-200/22 (22 kW): 178x27 mm
  • MMD 100-200/30 (30 kW): 193x27 mm
  • MMD 100-200/37 (37 kW): 203x27 mm
• Dimensions and Weight: See the official PDF for exact tabulated values.

Electrical

• Motor Type: Electric - TEFC, Three Phase
• Efficiency level (Reg. 640/2009): IE3 from 7.5 kW up to 37 kW
• Number of Poles: 2
• Rotation speed: ≈2900 min⁻¹
• Insulation Class: F
• Protection degree (CEI EN 60034-5): IP 55
• Power rating: 22 ÷ 37 kW (30 ÷ 50 HP)
• Frequency: 50 Hz
• Voltage: 400/690 ±10% V
• Overload protection: Provided by the user
• Motor Data (examples for 100% load at 400 V):
  • MMD 65-250/22 (22 kW): Efficiency 92.7%, Power-factor 0.87, Full load current 22.5 A, Locked rotor current 236.6 A
  • MMD 65-250/30 (30 kW): Efficiency 93.3%, Power-factor 0.89, Full load current 30.0 A, Locked rotor current 225.6 A
  • MMD 65-250/37 (37 kW): Efficiency 93.7%, Power-factor 0.91, Full load current 36.0 A, Locked rotor current 271.1 A
  • MMD 80-160/11 (11 kW): Efficiency 91.2%, Power-factor 0.89, Full load current 11.5 A, Locked rotor current 111.4 A
  • MMD 80-160/15R (15 kW): Efficiency 91.9%, Power-factor 0.88, Full load current 15.5 A, Locked rotor current 148.5 A
  • MMD 80-160/15 (15 kW): Efficiency 91.9%, Power-factor 0.88, Full load current 15.5 A, Locked rotor current 148.5 A
  • MMD 80-200/18,5 (18.5 kW): Efficiency 92.4%, Power-factor 0.88, Full load current 19.0 A, Locked rotor current 203.9 A
  • MMD 80-200/22 (22 kW): Efficiency 92.7%, Power-factor 0.87, Full load current 22.5 A, Locked rotor current 236.6 A
  • MMD 80-200/30 (30 kW): Efficiency 93.3%, Power-factor 0.89, Full load current 30.0 A, Locked rotor current 225.6 A
  • MMD 80-200/37 (37 kW): Efficiency 93.7%, Power-factor 0.91, Full load current 36.0 A, Locked rotor current 271.1 A
  • MMD 80-250/37 (37 kW): Efficiency 93.7%, Power-factor 0.91, Full load current 36.0 A, Locked rotor current 271.1 A
  • MMD 100-200/22 (22 kW): Efficiency 92.7%, Power-factor 0.87, Full load current 22.5 A, Locked rotor current 236.6 A
  • MMD 100-200/30 (30 kW): Efficiency 93.3%, Power-factor 0.89, Full load current 30.0 A, Locked rotor current 225.6 A
  • MMD 100-200/37 (37 kW): Efficiency 93.7%, Power-factor 0.91, Full load current 36.0 A, Locked rotor current 271.1 A

Noise data

• LpA - dB(A): Mean value of several measures at 1m distance around the pump. Tolerance ± 2.5 dB.
• Noise Levels (examples):
  • MMD 65-250/22 (22 kW): 81 dB(A)
  • MMD 65-250/30 (30 kW): 83 dB(A)
  • MMD 80-160/11 (11 kW): 80 dB(A)
  • MMD 80-200/18,5 (18.5 kW): 81 dB(A)
  • MMD 80-200/30 (30 kW): 83 dB(A)
  • MMD 100-200/22 (22 kW): 81 dB(A)
  • MMD 100-200/30 (30 kW): 83 dB(A)
  • Other models have blank values in the provided extract. See the official PDF for exact tabulated values.

Performance Data (Selection Chart)

The selection chart provides total manometric head (H) in meters for various flow rates (l/min and m³/h) across different MMD pump models and power ratings.

• Example (MMD 65-250/37, 37 kW):
  • At 800 l/min (48 m³/h), H = 86.5 m
  • At 2250 l/min (135 m³/h), H = 64 m
• Example (MMD 100-200/37, 37 kW):
  • At 2750 l/min (165 m³/h), H = 53.5 m
  • At 4500 l/min (270 m³/h), H = 38 m

See the official PDF for exact tabulated values for all models and operating points.

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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)

Lenntech datasheet mirror