Slip ring motors NMK

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ABB Motors NMK

Modular slip-ring motors, type NMK
Availability for heavy load inertia applications . Slip ring motors: ABB expertise provides the best solutions to drive the industry

NMK slip ring motors are available in shaft heights from 400 to 710 mm, with cooling methods and protection types of IC611/IP55, IC81W/IP55 as standard. The motors are rated up to 10,000 kW.

Type designation

The motors’ compact size and light weight reduces required installation space and equipment to lift the motor on site, leading to lower installation costs. NMK 400L4A 800 KW 6000V ABB high voltage induction motors 1481 rpm 50HZ NMK 400L4A 900 KW 6000V ABB high voltage induction motors 1482 rpm 50HZ NMK 450L4A 1000 KW 6000V ABB high voltage induction motors 1485 rpm 50HZ

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IC81W/IP55 The machine is totally enclosed having a machine-mounted and a SRU housing mounted air-to-water heat exchangers. A shaft mounted fan is fitted inside the casing to supply the internal cooling circuit. The motor is protected against dust and splashing water from any direction.a component designed for this purpose and mounted directly on the rotor of the main motor, or by a fan or pump unit mechanically driven by the rotor or the main motor.

Enclosure and cooling

Standard combinations for NMK motors are IC611/IP55 and IC81W/IP55, other cooling methods of IC616, IC86W, etc. High power density of our slip-ring motors means the power required is achieved in a smaller frame size.

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Technical data

NMK Slip-ring motors are an ideal solution for applications which require high starting torque and low starting current. They are especially suitable for heavy load inertia applications like mill drives or situations where network conditions are weak.

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Slip-ring modular motors from ABB

Reliability and high efficiency
Reliability and high efficiency of ABB slip-ring
motors reduce the downtime and operating costs
of your processes, minimizing cost of ownership.
The high efficiency is ensured by proven motor
design, use of high quality materials, and advanced
ventilation technology. The fully braced and vacuum
impregnated windings increase reliability in your
heavy-duty operations.

+ABB’s slip-ring motors minimize mechanical stress at starting, increasing the lifetime of your driven equipment. They provide maximized availability and high torque over the entire speed range.
+Modular slip-ring motors, type NMK Availability for heavy load inertia applications
+with brush lifting gear. In both cases the slip rings are enclosed in a housing located at the N-end and separated from the main motor frame. Liquid resistance starter(LRS) is available on request. For NMK motors this catalog only shows the typical technical data of 6kV and 11kV at 50 Hz for 4, 6, and 8 pole motors. While the complete product scope covers motors with 60Hz, pole numbers up to 16, and voltage rating up to 13.8kV. For more detailed technical data and configuration solutions on NMK slip-ring motors, please contact ABB.
+Slip-ring motors are widely used in mills, crushers, fans, and conveyors in the mining, cement and metal industries. In addition, these motors offer a reliable solution for pumps in the water industry and safe area pumps, compressors and mixers in the petrochemical industry. NMK slip ring motors are available in shaft heights from 400 to 710 mm, with cooling methods and protection types of IC611/IP55, IC81W/IP55 as standard. The motors are rated up to 10,000 kW. NMK motors have a welded steel frame. Slip ring unit can be supplied with permanent contact brushes, or

Dimension Specifications

Slip-ring motors are an ideal
solution for applications which
require high starting torque and
low starting current. Preliminary dimensions of standard configuration in the list.
Optional solutions e.g. NEMA oversize main terminal box, IM 1002, sleeve bearings, with BLD, etc. on request. Sleeve bearings with oil circulation are default for 4 pole machines on frame size 710 mm.
Accurate dimension drawing will be given on customized solution at the quotation phase.

1 < UN ≤ 6.6 kV, IM 1001, IC611 / IP55

  • Output power
  • Frame sizes
  • Voltage
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6.6 < UN ≤ 11 kV, IM 1001, IC611 / IP55

  • Cooling
  • Protection
  • Mounting
  • Bearings
  • Insulation class
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All Voltages IM 1001, IC81W / IP55

  • up to 10,000 kW
  • 400 to 710
  • 2.3 to 13.8 kV
See The Drawings

ABB slip-ring modular motor
Type NMK.
Contact Us , Your reliable partner.

ABB’s slip-ring motors minimize mechanical stress at starting, increasing the lifetime of your driven equipment. They provide maximized availability and high torque over the entire speed range.

Order Quantity OfOne PieceTwo PiecesThree PiecesAll Quantitesis acceptable.

We accept all quantities even one piece that we would send for you. There are big stock these brands' parts in our warehouse and one or two pieces is not a problem for us. Of courser, the larger quantity, the better price. We suggest to order as more as possible.
Payment could be Telegraphic Transfer or Paypal Or credit card or even Alipay. We have over 30 years experience on international trade and lots of the payment we can accept. We will send you our accounts once you have make decision on which way will pay us.
Delivery way is by various ways such as by air, or by sea or door to door by courier. For small quantity, we suggest to send by air or by courier because the sea freight agents don't like small weight cargos over 100kg below. Also, the transport time is depends on the way that you choose and we will give you some advice when you have place orders.
We are one of many agents for worldwide famous brands in China and we guarantee all these brand parts that we selling is genuine. There is QR code in the parts and all you could check from the brands' official website.

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Yantai Bonway Manufacturer Co.ltd

Phone:   +86 535 6330966

Whatsapp/Wechat: +86 185 6380 6647 

Adress: No.160 Changjiang Road, Yantai, Shandong, China(264006)

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