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Datasheet summary

CM-25

PDF datasheet mirror for CM-25 (Grundfos Pumps). Verify with OEM before design.

Summary

Product identification

The Grundfos CM 25 series consists of horizontal, multistage centrifugal pumps, available in 50 Hz and 60 Hz versions.

Available variants and materials:

  • CM 25-A: Cast iron (EN-GJL-200)
  • CM 25-I: EN 1.4301/AISI 304 stainless steel
  • CM 25-G: EN 1.4401/AISI 316 stainless steel
  • CME 25-A: Cast iron (EN-GJL-200)
  • CME 25-I: EN 1.4301/AISI 304 stainless steel
  • CME 25-G: EN 1.4401/AISI 316 stainless steel

Operating limits

Performance curves for 50 Hz and 60 Hz operation are provided in the official PDF, illustrating relationships between flow rate (Q), head (H), power input (P2), Net Positive Suction Head (NPSH), and efficiency (Eta).

  • 50 Hz: Flow rates up to 28 m³/h, head up to 70 m.
  • 60 Hz: Flow rates up to 34 m³/h, head up to 65 m.

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

Electrical

The CM 25 and CME 25 pumps are available with various electrical configurations:

CM 25-A (Cast Iron)

50 Hz Supply:

  • 3 x 220-240 V / 380-415 V, 50 Hz (supply voltage F)
    • CM25-1: P2 2.20 kW
    • CM25-2: P2 4.0 kW
    • CM25-3: P2 5.8 kW
    • CM25-4: P2 7.40 kW
  • 1 x 220-240 V, 50 Hz (supply voltage C)
    • CM25-1: P2 1.9 kW

60 Hz and 50/60 Hz Supply:

  • 3 x 208-230 V / 440-480 V, 60 Hz (supply voltage E)
  • 3 x 575 V, 60 Hz (supply voltage H)
  • 3 x 400 V, 50/60 Hz (supply voltage I)
    • CM25-1: P2 4.0 kW* (* applies to supply voltage I)
    • CM25-2: P2 6.2 kW* (* applies to supply voltage I)
    • Note: Until further notice, pumps for supply voltage I are only suitable for connection to a frequency of 60 Hz. A dual frequency version is expected to be ready for sales in January 2011.
  • 3 x 380-415 V, 50 Hz; 3 x 440-480 V, 60 Hz (supply voltage J)
    • CM25-1: P2 2.36 kW (50 Hz) / 4.0 kW (60 Hz)
    • CM25-2: P2 4.2 kW (50 Hz) / 6.2 kW (60 Hz)
  • 3 x 200/346 V, 50 Hz; 3 x 200-220/346-380 V, 60 Hz (supply voltage G)
    • CM25-1: P2 2.3 kW (50 Hz), 4.0 kW (60 Hz)
    • CM25-2: P2 3.6 kW (50 Hz), 6.2 kW (60 Hz)

CM 25-I and CM 25-G (Stainless Steel)

50 Hz Supply:

  • 3 x 220-240 V / 380-415 V, 50 Hz (supply voltage F)
    • CM25-1: P2 2.20 kW
    • CM25-2: P2 4.0 kW
    • CM25-3: P2 5.8 kW
    • CM25-4: P2 7.40 kW
  • 1 x 220-240 V, 50 Hz (supply voltage C)
    • CM25-1: P2 1.9 kW

60 Hz and 50/60 Hz Supply:

  • 3 x 208-230 V / 440-480 V, 60 Hz (supply voltage E)
  • 3 x 575 V, 60 Hz (supply voltage H)
  • 3 x 400 V, 50/60 Hz (supply voltage I)
    • CM25-1: P2 4.0 kW* (* applies to supply voltage I)
    • CM25-2: P2 6.2 kW* (* applies to supply voltage I)
    • Note: Until further notice, pumps for supply voltage I are only suitable for connection to a frequency of 60 Hz. A dual frequency version is expected to be ready for sales in January 2011.
  • 3 x 380-415 V, 50 Hz; 3 x 440-480 V, 60 Hz (supply voltage J)
    • CM25-1: P2 2.36 kW (50 Hz) / 4.0 kW (60 Hz)
    • CM25-2: P2 4.2 kW (50 Hz) / 6.2 kW (60 Hz)
  • 3 x 200/346 V, 50 Hz; 3 x 200-220/346-380 V, 60 Hz (supply voltage G)
    • CM25-1: P2 2.3 kW (50 Hz), 4.0 kW (60 Hz)
    • CM25-2: P2 3.6 kW (50 Hz), 6.2 kW (60 Hz)

CME 25-A (Cast Iron)

60 Hz and 50/60 Hz Supply:

  • 3 x 380-480 V, 50/60 Hz (supply voltage L)
    • CME25-1: P2 3.0 kW
    • CME25-2: P2 7.5 kW
  • 3 x 460-480 V, 60 Hz (supply voltage N)
    • CME25-1: P2 4.0 kW
    • CME25-2: P2 5.5 kW

CME 25-I and CME 25-G (Stainless Steel)

60 Hz and 50/60 Hz Supply:

  • 3 x 380-480 V, 50/60 Hz (supply voltage L)
    • CME25-1: P2 3.0 kW
    • CME25-2: P2 7.5 kW
  • 3 x 460-480 V, 60 Hz (supply voltage N)
    • CME25-1: P2 4.0 kW
    • CME25-2: P2 5.5 kW

Mechanical / hydraulic

Pipe Connections

  • CM 25-A, CM 25-I, CM 25-G:
    • A1, A2: Rp 2
    • A3: Rp 3/8
  • CME 25-A, CME 25-I, CME 25-G (some models):
    • A1, A2: NPT 2
    • A3: Rp 3/8

Dimensions

Detailed dimensions (A1-A4, B1-B3, H, H1, H2, L1-L9) are provided in the official PDF, varying by pump type, frame size, and frequency. See the official PDF for exact tabulated values and dimensional drawings.

Weights and Shipping Volume

CM 25-A (Cast Iron)

  • 1 x 220-240 V, 50 Hz (supply voltage C)
    • CM 25-1: Net weight 28.5 kg, Gross weight 31.0 kg, Shipping volume 0.0370 m³
  • 3 x 220-240 V / 380-415 V, 50 Hz (supply voltage F)
    • CM 25-1: Net weight 30.6 kg, Gross weight 33.1 kg, Shipping volume 0.0370 m³
    • CM 25-2: Net weight 39.5 kg, Gross weight 42.0 kg, Shipping volume 0.0444 m³
    • CM 25-3: Net weight 55.3 kg, Gross weight 57.8 kg, Shipping volume 0.0495 m³
    • CM 25-4: Net weight 56.0 kg, Gross weight 58.5 kg, Shipping volume 0.0495 m³
  • 3 x 200/346 V, 50 Hz; 3 x 200-220/346-380 V, 60 Hz (supply voltage G)
    • CM 25-1: Net weight 38.8 kg, Gross weight 41.31 kg, Shipping volume 0.0444 m³
    • CM 25-2: Net weight 47.6 kg, Gross weight 50.11 kg, Shipping volume 0.0495 m³
  • 3 x 208-230 V / 440-480 V, 60 Hz (supply voltage E), 3 x 575 V, 60 Hz (supply voltage H), 3 x 400 V, 50/60 Hz (supply voltage I)*, 3 x 380-415 V, 50 Hz; 3 x 440-480 V, 60 Hz (supply voltage J)
    • CM 25-1: Net weight 38.8 kg, Gross weight 41.3 kg, Shipping volume 0.0444 m³
    • CM 25-2: Net weight 47.6 kg, Gross weight 50.1 kg, Shipping volume 0.0495 m³

CM 25-I and CM 25-G (Stainless Steel)

  • 1 x 220-240 V, 50 Hz (supply voltage C)
    • CM 25-1: Net weight 24.5 kg, Gross weight 27.0 kg, Shipping volume 0.0444 m³
  • 3 x 220-240 V / 380-415 V, 50 Hz (supply voltage F)
    • CM 25-1: Net weight 26.6 kg, Gross weight 29.1 kg, Shipping volume 0.0444 m³
    • CM 25-2: Net weight 35.0 kg, Gross weight 37.5 kg, Shipping volume 0.0444 m³
    • CM 25-3: Net weight 50.3 kg, Gross weight 52.8 kg, Shipping volume 0.0495 m³
    • CM 25-4: Net weight 51.2 kg, Gross weight 53.7 kg, Shipping volume 0.0495 m³
  • 3 x 200/346 V, 50 Hz; 3 x 200-220/346-380 V, 60 Hz (supply voltage G)
    • CM 25-1: Net weight 34.8 kg, Gross weight 37.3 kg, Shipping volume 0.0444 m³
    • CM 25-2: Net weight 43.1 kg, Gross weight 45.6 kg, Shipping volume 0.0495 m³
  • 3 x 208-230 V / 440-480 V, 60 Hz (supply voltage E), 3 x 575 V, 60 Hz (supply voltage H), 3 x 400 V, 50/60 Hz (supply voltage I)*, 3 x 380-415 V, 50 Hz; 3 x 440-480 V, 60 Hz (supply voltage J)
    • CM 25-1: Net weight 34.8 kg, Gross weight 37.3 kg, Shipping volume 0.0444 m³
    • CM 25-3: Net weight 43.1 kg, Gross weight 45.6 kg, Shipping volume 0.0495 m³

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. For contractual data and full product specifications, please refer to the official OEM PDF revision used on your project.

Official datasheet (PDF)

Lenntech datasheet mirror

Curated from selected public technical reference material for discovery and preliminary comparison. This summary is not a substitute for a current certified manufacturer datasheet. Verify revisions and design limits before use.