40S, L4C, L6C, L6W, L8W, L10W, L12W

Summary

Product Identification

This document summarizes specifications for Lowara submersible motors, including the 4OS, L4C, L6C, L6W, L8W, L10W, and L12W series, designed for 4”, 6”, 8”, 10”, and 12” applications. All motors are compliant with ErP 2009/125/EC and primarily operate at 50 Hz.

Common features across these series include:

• Shaft extension and coupling dimensions to NEMA standards.
• Protection class: IP68.
• Internal fluid suitable for contact with foodstuffs.
• Strong and durable compensating bellows.
• Axial load supported by angular bearings.
• Mechanical seal protected by sand guard.
• Suitable for both vertical / horizontal installations.
• Optional features often include different voltages and frequencies, and control panels as accessories.

Series 4OS Submersible Motors

Product Overview

• Type: 4” Submersible oil filled rewindable motors.
• Key Features: High starting torque, rewindable stator, power supply cable with extractable connector, mechanical seal, screws to fix the pump are included.
• Approvals: D.M. 174/2004.
• Construction: Stainless steel outer sleeve.
• Insulation Class: 155 (F).
• Identification Code Example: 4OS11M235 (4OS series, 1.1 kW, Single-phase, 220-240 V, 50 Hz).

Operating Limits

• Maximum immersion depth: 150 m.
• Maximum number of starts per hour at regular intervals:
  • 30 for direct start.
  • 20 for impedance start.
• Maximum water temperature: 35°C (applies to motors working in an installation capable of delivering a flow of water around the motor jacket of at least 0.08 m/s).
• Axial thrust:
  • 3000 N from 0.37 to 2.2 kW.
  • 6500 N from 3 to 7.5 kW.

Feed Water Requirements

• Water pH: from 4 to 8.

Electrical Specifications

• Versions:
  • Single-phase: from 0.37 to 4 kW, 220-240 V ± 6%, 50 Hz.
  • Three-phase: from 0.37 to 7.5 kW, 220-240 V ± 6%, 50 Hz; from 0.37 to 7.5 kW, 380-415 V ± 6%, 50 Hz.
• Optional Features: Single-phase version up to 1.1 kW with built-in capacitor and motor protection (2W = Two Wire).
• Accessories: Control panels, drop cables, coupling flanges, cooling sleeves, capacitors.
• Operating Characteristics: Detailed tables for Single-phase and Three-phase at 50 Hz, including kW, HP, voltage, current, RPM, efficiency, cos φ, starting torque ratio (Ts/Tn), starting current ratio (Is/In), max water temperature, and cable specifications, are available. See the official PDF for exact tabulated values.

Mechanical / Hydraulic Specifications

• Materials:
  • Head, Lower bracket: Cast iron EN 1561-EN-GJL-200 (EN-JL1030) / ASTM A159-70-G3500.
  • Studs, Connector sleeve, Outer sleeve, Lower protection, Snap ring, Screws, nuts, washers, Upper cover: Stainless steel EN 10088-3-X5CrNi18-10 (1.4301) / AISI 304.
  • Filling screw: Brass EN 12165-CuZn40Pb2 (CW617N).
  • Sand guard, Elastomers, Compensating diaphragm: NBR.
  • Cable: EPDM.
  • Mechanical seal: Carbon / Ceramic.
  • Shaft end (up to 2.2 kW): Stainless steel EN 10088-3-X8CrNiS18-9 (1.4305) / AISI 303.
  • Shaft end (from 3 kW): Stainless steel EN 10088-1-X2CrNiMoN22-5-3 (1.4462) / ASTM A 182: F51.
  • Cooling liquid: Non toxic oil.
• Dimensions and Weights: Tables for Single-phase and Three-phase at 50 Hz, including motor type, kW, HP, length (L mm), and weight (kg), are available. See the official PDF for exact tabulated values.

Series L4C Submersible Motors

Product Overview

• Type: 4” Submersible water filled encapsulated motors.
• Key Features: High starting torque, power supply cable with extractable connector, mechanical seal, Kingsbury type thrust bearing, screws to fix the pump are included.
• Construction: Stainless steel outer sleeve.
• Insulation Class: 155 (F).
• Identification Code Example: L4C11M235 (L4C series, 1.1 kW, Single-phase, 220-240 V, 50 Hz).

Operating Limits

• Maximum immersion depth: 300 m.
• Maximum number of starts per hour at regular intervals:
  • 40 for direct start.
  • 20 for impedance start.
• Maximum water temperature: 35°C (applies to motors working in an installation capable of delivering a flow of water around the motor jacket of at least 0.3 m/s).
• Axial thrust:
  • 2000 N from 0.37 to 1.1 kW.
  • 3000 N from 1.5 to 2.2 kW.
  • 6000 N from 3 to 7.5 kW.

Electrical Specifications

• Versions:
  • Single-phase: from 0.37 to 4 kW (until 1.1 kW with built-in automatic reset overload protection), 220-240 V ± 6% 50 Hz.
  • Three-phase: from 0.37 to 5.5 kW, 220-240 V ± 6% 50 Hz; from 0.37 to 7.5 kW, 380-415 V ± 6% 50 Hz.
• Optional Features: Single-phase version up to 1.1 kW with built-in capacitor and motor protection (2W = Two Wire).
• Accessories: Control panels, drop cables, coupling flanges, cooling sleeves, capacitors.
• Operating Characteristics: Detailed tables for Single-phase and Three-phase at 50 Hz, including kW, HP, voltage, current, RPM, efficiency, cos φ, starting torque ratio (Ts/Tn), starting current ratio (Is/In), max water temperature, and cable specifications, are available. See the official PDF for exact tabulated values.

Mechanical / Hydraulic Specifications

• Materials:
  • Inner, outer sleeves and flanges: Stainless steel EN 10088-1-X2CrNi18-9 (1.4307) / AISI 304L.
  • Shaft extension (up to 2.2 kW): Stainless steel EN 10088-1-X5CrNi18-10 (1.4301) / AISI 304.
  • Shaft extension (from 3 kW): Stainless steel EN 10088-3-X3CrNiMoN27 (1.4460) / AISI 329.
  • Upper bracket: Cast iron EN 1561-EN-GJL-200 (EN-JL1030) / Class 25 B.
  • Upper cover, Lower cover (up to 2.2 kW): Stainless steel EN 10088-1-X5CrNi18-10 (1.4301) / AISI 304.
  • Lower cover (from 3 kW): Cast iron EN 1561-EN-GJL-200 (EN-JL1030) / Class 25 B.
  • Lip seal, Elastomers, Compensating bellows, Fixed sand guard, Removable sand guard: NBR.
  • Bearings: Carbon-graphite.
  • Cable: EPDM.
  • Bolts and screws: Stainless steel EN ISO 3506-1 Grade A2.
  • Capacitor box (for 2W models): PPE.
  • Cooling liquid: Demineralized water + antifreeze.
• Dimensions and Weights: Tables for Single-phase and Three-phase at 50 Hz, including motor type, kW, HP, length (L (L1) mm), and weight (kg), are available. See the official PDF for exact tabulated values.

Series L6C Submersible Motors

Product Overview

• Type: 6” Submersible water filled encapsulated motors.
• Key Features: High starting torque, power supply cable with extractable connector, mechanical seal, Kingsbury type thrust bearing, screws to fix the pump are included.
• Construction: Stainless steel outer sleeve.
• Insulation Class: 155 (F).
• Identification Code Example: L6C110T405 (L6C series, 11 kW, Three-phase, 380-415 V, 50 Hz).

Operating Limits

• Maximum immersion depth: 250 m.
• Maximum number of starts per hour at regular intervals: 25 for direct start.
• Maximum water temperature: 35°C (applies to motors working in an installation capable of delivering a flow of water around the motor jacket of at least 0.2 m/s).
• Axial thrust:
  • 16000 N from 4 to 22 kW.
  • 27000 N from 30 to 37 kW.

Electrical Specifications

• Versions:
  • Three-phase: from 4 to 22 kW, 220-240 V ± 6% 50 Hz; from 4 to 37 kW, 380-415 V ± 6% 50 Hz.
• Optional Features: Silicon Carbide mechanical seal; Motors with double cable outlet for star/delta start can be supplied upon request; Temperature sensor PT 100 / PTC.
• Accessories: Control panels, drop cables, coupling flanges, cooling sleeves.
• Operating Characteristics: Detailed tables for Three-phase at 50 Hz, including kW, HP, voltage, current, RPM, efficiency, cos φ, starting torque ratio (Ts/Tn), starting current ratio (Is/In), max water temperature, and cable specifications, are available. See the official PDF for exact tabulated values.

Mechanical / Hydraulic Specifications

• Materials:
  • Inner and outer sleeve: Stainless steel EN 10088-1-X2CrNi18-9 (1.4307) / AISI 304L.
  • Flanges: Carbon steel EN 10025 - S355JR (Fe 510-B) / ASTM A105.
  • Shaft extension: Stainless steel duplex EN 10095 X3CrNiMoN27-5-2 (1.4460) / AISI 329.
  • Upper bracket, Intermediate bracket, Lower bracket: Cast iron EN 1561-EN-GJL-200 (EN-JL1030) / Class 25 B.
  • Mechanical seal: Aluminium oxide / Carbon-graphite.
  • Elastomers, Compensating bellows: NBR.
  • Bearings: Carbon-graphite.
  • Cable: EPDM.
  • Fixed sand guard, Removable sand guard, Bolts and screws, Lower cover: Stainless steel EN 10088-1-X5CrNi18-10 (1.4301) / AISI 304.
  • Mechanical seal spacer: Carb. steel (nichel-plate) EN 10025 - S355JR (Fe 510-B) / ASTM A105.
  • Sand guard gasket: CR neoprene.
  • Cooling liquid: Demineralized water + antifreeze.
• Dimensions and Weights: Tables for Three-phase at 50 Hz, including motor type, kW, HP, length (L mm), and weight (kg), are available. See the official PDF for exact tabulated values.

Series L6W Submersible Motors

Product Overview

• Type: 6” Submersible water filled rewindable motors.
• Key Features: Rewindable stator, mechanical seal, Kingsbury type thrust bearing, screws to fix the pump are included.
• Approvals: ACS, D.M. 174/2004.
• Construction: Stainless steel outer sleeve.
• Identification Code Example: L6W110T406/A HT (L6W series, 11 kW, Three-phase, 380-415 V, 60 Hz, High Temperature).

Operating Limits

• Maximum immersion depth: 350 m.
• Maximum number of starts per hour at regular intervals: 15.
• Maximum water temperature:
  • 30°C for standard version.
  • 45°C for HT version.
  • Max. temperature applies to motors working in an installation capable of delivering a flow of water around the motor jacket as follows:
    • 0.2 m/s for standard version from 4 to 9.3 kW; HT version from 4 to 7.5 kW.
    • 0.3 m/s for standard version from 11 to 30 kW; HT version from 9.3 to 26 kW.
    • 0.5 m/s for standard version from 37 kW; HT version from 30 kW.
• Axial thrust:
  • 16000 N from 4 to 22 kW.
  • 30000 N from 26 to 37 kW.

Electrical Specifications

• Insulation Class: 70 for standard version; 85 for HT version.
• Versions:
  • Three-phase: from 4 to 37 kW, 380-415 V ± 6% 50 Hz.
• Optional Features: Silicon Carbide mechanical seal; L6WN version (realized of stainless steel); L6WR version (realized of AISI 316 Duplex stainless steel); HT version for high temperature; Motors with double cable outlet for star/delta start can be supplied upon request; Temperature sensor PT 100 / PTC.
• Accessories: Control panels, drop cables, coupling flange, cooling sleeve.
• Operating Characteristics: Detailed tables for Three-phase at 50 Hz (Standard and HT versions), including kW, HP, voltage, current, RPM, efficiency, cos φ, starting torque ratio (Ts/Tn), starting current ratio (Is/In), max water temperature, and cable specifications, are available. See the official PDF for exact tabulated values.

Mechanical / Hydraulic Specifications

• Materials (L6W Standard Version):
  • Upper bracket, Spacer, Lower bracket, Thrust bearing bracket, Lower cover: Cast iron EN 1561-EN-GJL-200 (EN-JL1030) / Class 25 B.
  • Filling plug (+OR), Vent valve: Stainless steel EN 10088-1-X5CrNiMo17-12-2 (1.4401) / AISI 316.
  • Cable gland plate, Motor sleeve, Bolts and screws: Stainless steel EN 10088-1-X5CrNi18-10 (1.4301) / AISI304.
  • Cable: EPR.
  • Cable gland, Removable sand guard, Diaphragm: EPDM.
  • Shaft end: Stainless steel EN 10088-1-X20Cr13 (1.4021) / AISI420.
  • Mechanical seal cover: Stainless steel EN 10213-4-GX5CrNi19-10 (1.4308) / ASTM CF-8 (AISI 304 cast).
  • Mechanical seal: Carbon-graphite / Ceramic.
  • Bush bearings: Carbon-graphite.
  • Elastomers: NBR.
  • Cooling liquid: Water + antifreeze.
• Materials (L6WN Stainless Steel Version):
  • Upper bracket, Spacer, Mechanical seal cover, Lower bracket, Thrust bearing bracket, Lower cover: Stainless steel EN 10213-4-GX5CrNiMo19-11-2 (1.4408) / ASTM CF-8M (AISI 316 cast).
  • Filling plug (+OR), Vent valve, Cable gland plate, Motor sleeve, Bolts and screws: Stainless steel EN 10088-1-X5CrNiMo17-12-2 (1.4401) / AISI 316.
  • Cable: EPR.
  • Cable seal, Removable sand guard, Diaphragm: EPDM.
  • Shaft end: Duplex stainless steel EN 10088-1-X2CrNiMoN22-5-3 (1.4462) / A276/A790-S31803.
  • Mechanical seal: Carbon graphite / Ceramic.
  • Bush bearings: Carbon-graphite.
  • Elastomers: NBR.
  • Cooling liquid: Water + antifreeze.
• Materials (L6WR Duplex Stainless Steel Version):
  • Upper bracket, Spacer, Thrust bearing bracket, Lower cover: Duplex stainless steel EN 10213-4-GX2CrNiMoCuN25-6-3-3 (1.4517).
  • Filling plug (+OR), Vent valve, Shaft end, Mechanical seal cover, Bolts and screws: Duplex stainless steel EN 10088-1-X2CrNiMoN22-5-3 (1.4462) / A276/A790-S31803.
  • Cable: EPR.
  • Cable gland plate, Motor sleeve: Stainless steel EN 10088-1X1NiCrMoCu25-20-5 (1.4539) / AISI 904L.
  • Cable gland, Removable sand guard, Diaphragm: EPDM.
  • Mechanical seal: Carbon graphite / Ceramic.
  • Bush bearings: Carbon-graphite.
  • Elastomers: NBR.
  • Cooling liquid: Water + antifreeze.
• Dimensions and Weights: Tables for Three-phase at 50 Hz (Standard and HT versions), including motor type, kW, HP, length (L mm), and weight (kg), are available. See the official PDF for exact tabulated values.

Series L8W Submersible Motors

Product Overview

• Type: 8” Submersible water filled rewindable motors.
• Key Features: Rewindable stator, mechanical seal, Kingsbury type thrust bearing.
• Approvals: ACS, D.M. 174/2004.
• Construction: Stainless steel outer sleeve.

Operating Limits

• Maximum immersion depth: 350 m.
• Maximum number of starts per hour at regular intervals: 10.
• Maximum water temperature:
  • 30°C for standard version.
  • 45°C for HT version.
  • Max. temperature applies to motors working in an installation capable of delivering a flow of water around the motor jacket of at least 0.5 m/s.
• Axial thrust: 50000 N from 30 to 93 kW.

Electrical Specifications

• Insulation Class: 70 for standard version; 85 for HT version.
• Versions:
  • Three-phase: from 30 to 93 kW, 380-415 V ± 6% 50 Hz.
• Optional Features: Silicon Carbide mechanical seal; L8WN version (realized of stainless steel); L8WR version (realized of AISI 316 Duplex stainless steel); HT version for high temperature; Motors with double cable outlet for star/delta start can be supplied upon request.
• Accessories: Temperature sensor PT 100 / PTC.

Other Series (L10W, L12W)

The provided extract lists the L10W and L12W series but does not include their detailed specifications. For information on these series, please refer to the official PDF.

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Disclaimer: This summary is based on the provided text extract 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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