10″ · KM10

Submersible motors · 10″ borehole

KOMAX KM10 Series:10” Submersible Water-Cooled Motor

For municipal supply, mining and large irrigation schemes that need massive water volume. 2-pole models from 75 to 270 HP, and 4-pole models from 40 to 175 HP for high-torque mixed-flow systems.

Power range (2-pole): 75 HP (56 kW) – 270 HP (200 kW)2,900 rpm @ 50 Hz
Power range (4-pole): 40 HP (30 kW) – 175 HP (130 kW)1,450 rpm @ 50 Hz
Voltage: 380–415 V50 Hz · or 460 V @ 60 Hz
Mounting: Double flangeNEMA coupling
Thrust load: 120,000 NKingsbury type
Speed: 2 or 4-pole2,900 / 1,450 rpm @ 50 Hz

ConstructionStandard · Cast iron with NSF Certified EpoxyOptional · SS316 & SS2205 (Duplex Steel)

Request a quote Datasheet & catalog Find your model

IEC 60034-1NSF/ANSI/CAN 61CEPSQCA

Construction

What’s inside, part by part.

Taken from the cross-section in the catalog. Each detail exists to keep sand out, heat down and the shaft true.

01 · SEALING

Triple seal stack

A sand guard, back-to-back NBR lip seals and a spring-loaded tungsten-carbide mechanical seal. The sand guard stays intact at 3,500 rpm.

02 · CABLE ENTRY

Independent cable seal

A rubber gasket sandwiched between nylon plates and clamped by a steel plate on M8 bolts. The lead exits the lower flange to avoid damage during assembly.

03 · FILLING

Slanted fill holes

Positioned for maximum fluid level inside the motor, and easy to reach even with the pump coupled.

04 · STATOR

M800 low-loss stack

A longer stack of high-grade silicon steel gives lower core losses, lower current and a cooler-running motor. The ends are welded to threaded flanges.

05 · WINDING

BOPET+BOPP copper

Electrolytic solid copper rated above 100 °C, with an oversized gauge and mechanised coil insertion.

06 · ROTOR & SHAFT

AISI 431 spline shaft

Induction-hardened to 40 HRC and ground along its full length, with copper-bar rotor slots. Standard coupling dimensions.

07 · BEARINGS

Double carbon bushes

Water-lubricated guide bearings in both brackets. A tapered balancing ring guides flow into the bushes for cooling.

08 · THRUST

Kingsbury thrust bearing

A carbon disc on hardened 400-series stainless shoes. Custom thrust ratings are available on request.

09 · PROTECTION

PT100 provision & NBR bellow

A PT100 port for real-time temperature monitoring. The NBR bellow compensates for heat expansion and depth pressure.

IP68Protection

A / BInsulation class

50 °CAmbient water

+6/−10%Voltage tolerance

Vert./Horiz.Mounting

16 cm/sMin. cooling flow

200 mMax. immersion

10Max. starts / hour

Rotation CCW facing shaft end · Water + non-toxic antifreeze filler · Wooden case packing.

Model selector

Pick the power. Get the full data sheet.

Choose your grid frequency and rating to see current, efficiency, power factor, dimensions, weight and recommended cable for that exact model.

KM10 150T

Service factor —

Speed: —
Full-load current: —
SF current: —
Power factor: —
Thrust capacity: —
Weight: —
Cable · DOL: —
Cable · Star-delta: —

Efficiency · power factor at load

50 %—%—

75 %—%—

100 %—%—

Bars scaled 70–90 % for readability. cos φ shown in grey.

Motor length (mm)

Packing — mm · — kg packed

Data from catalog KM-R0426. Specifications subject to change.Quote this model

Electrical data

Three-phase motor data for every rating.

Scroll sideways on small screens →

50 Hz · 380–415 V
	Motor size			Current (A)		Efficiency % at load			Power factor (cos φ) at load
Motor type	HP	kW	RPM	Full load	Safety	50	75	100	50	75	100	SF
KM10 075T	75	56	2,900	111.5	—	80.6	86.7	86.4	0.71	0.80	0.84	1.00
KM10 100T	100	75	2,890	146.0	—	81.5	87.4	86.9	0.72	0.81	0.85	1.00
KM10 125T	125	93	2,895	183.6	—	81.9	87.4	87.1	0.72	0.80	0.84	1.00
KM10 150T	150	112	2,905	217.0	—	82.7	88.1	87.7	0.73	0.81	0.85	1.00
KM10 175T	175	130	2,910	257.6	—	83.9	87.9	87.3	0.73	0.80	0.84	1.00
KM10 200T	200	150	2,900	291.9	—	84.5	87.9	87.0	0.75	0.81	0.85	1.00
KM10 250T	250	186	2,905	366.3	—	84.7	88.1	87.3	0.74	0.81	0.84	1.00
KM10 270T	270	200	—	—	—	—	—	—	—	—	—	—

60 Hz · 460 V
	Motor size			Current (A)		Efficiency % at load			Power factor (cos φ) at load
Motor type	HP	kW	RPM	Full load	Safety	50	75	100	50	75	100	SF
KM10 075T	75	56	3,495	97.5	112.0	80.3	86.5	86.2	0.70	0.79	0.84	1.15
KM10 100T	100	75	3,490	127.7	147.0	81.3	87.1	86.7	0.71	0.80	0.85	1.15
KM10 125T	125	93	3,500	160.9	185.3	81.6	87.2	86.8	0.71	0.80	0.84	1.15
KM10 150T	150	112	3,505	189.5	218.7	82.2	87.9	87.5	0.72	0.81	0.85	1.15
KM10 175T	175	130	3,510	225.0	259.5	83.8	87.7	87.1	0.72	0.80	0.84	1.15
KM10 200T	200	150	3,500	255.1	294.0	84.3	87.7	86.8	0.74	0.81	0.85	1.15
KM10 250T	250	186	3,505	320.4	370.6	84.4	87.8	87.1	0.73	0.80	0.84	1.15
KM10 270T	270	200	3,500	338.7	391.6	85.0	88.5	87.6	0.75	0.82	0.85	1.15

Values as published in catalog KM-R0426. Safety-factor current applies at 60 Hz (SF 1.15).

4-pole electrical data

KM10 4-pole · 1,450 / 1,750 rpm.

KM10 4-pole · 1,450 / 1,750 rpm.
Motor type	HP	kW	RPM 50 Hz	FLC 50 Hz (A)	Eff. 100% 50 Hz	Power factor 100% 50 Hz	RPM 60 Hz	FLC 60 Hz (A)	Eff. 100% 60 Hz	Power factor 100% 60 Hz
KM10 040-4	40	30	1420	63.2	84.9	0.80	1715	54.2	86.0	0.80
KM10 050-4	50	37	1420	77.5	85.0	0.82	1720	68.5	86.5	0.79
KM10 060-4	60	45	1425	92.6	85.3	0.82	1725	81.2	86.9	0.80
KM10 075-4	75	56	1425	115.6	85.4	0.82	1730	102.3	87.0	0.79
KM10 100-4	100	75	1420	155.9	85.4	0.81	1725	134.2	87.1	0.80
KM10 125-4	125	93	1425	191.9	85.2	0.82	1730	167.7	87.4	0.80
KM10 150-4	150	112	1425	212.4	87.7	0.87	1725	185.5	89.7	0.84
KM10 175-4	175	130	1415	265.7	85.8	0.83	1715	229	87.6	0.82

50 Hz at 380–415 V, 60 Hz at 460 V. Full tables in catalog KM-R0426.

Construction options

Choose the metallurgy for your water.

Not sure which? Send us a water analysis with your enquiry and we’ll recommend one.

Standard

Cast iron, NSF-certified epoxy

The right choice for most fresh-water wells: agriculture, municipal supply and general industrial duty.

Brackets & housingsCast iron, NSF Certified Epoxy
ShaftAISI 431 stainless
Fasteners & flangesAISI 304/316
Drinking waterNSF/ANSI/CAN 61

Optional

SS316 & SS2205 (Duplex Steel)

For saline, brackish or chemically aggressive water, coastal installations and food or pharma process water.

Brackets & housingsSS316 or SS2205 duplex
ShaftAISI 431 / SS316
Fasteners & flangesSS316
Best forCorrosive / saline wells

Request a quote

Quote a KM10 for your project.

Pick the model, or just give us flow and head. An application engineer will reply with a selection, lead time and pricing, normally within one working day.

KOMAX KM10 Series:10” Submersible Water-Cooled Motor

The workhorse of the KOMAX line-up.

Typical applications