Efficiency

Electric Motor Efficiency

Efficiency

Definition

Electric motor efficiency is the ratio between power output (mechanical) and power input (electrical). Mechanical power output is calculated based on the torque and speed required (i.e. power required to move the object attached to the motor), and electrical power input is calculated based on voltage and current supplied to the motor. Mechanical power output is always lower than the electrical power input, as energy is lost during conversion (electrical to mechanical) in various forms, such as heat and friction. Design of an electric motor aims to minimize these losses to improve efficiency.

Solution Overview

Portescap motors are designed to achieve up to 90% efficiency. Powerful neodymium magnets and enhanced magnetic circuit design enable our motors to reach stronger electro-magnetic flux, reducing electromagnetic losses. Portescap continues to innovate electro-magnetic design and coil technologies (e.g. coreless coils) that require low start-up voltage and consume minimum current. Friction is reduced and brush dc motor efficiency is improved by low-resistance commutators and collectors in brush DC motors. Our advanced design allows us to build motors with closer tolerances, narrowing the air gap between the rotor and the stator and resulting in less energy input per unit of torque output.

Portescap Technology

With advanced coreless coils and superior brush performance, our brush DC motors designs are highly efficient and are optimal for battery-powered applications. For high efficiency in high-speed applications, Portescap also offers a brushless DC motor design that is slotless, which significantly reduces joule losses.

Portescap high efficiency motors are perfect for the following applications:

Surgical Motor Solutions

Designed and manufactured in the USA, our Surgical Motor Solutions (SMS) products are custom engineered for high reliability and the exacting specifications of surgical hand tool and surgical robotic applications.

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Ultra EC Brushless DC Motors

The three families of Ultra EC Brushless DC Motors not only meet a high range of requirements, but include our patented U coil for excellent performance, minimal iron losses and maximum efficiency

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Athlonix DC Motors

Althlonix DC Motors utilize an energy efficient coreless motor design to provide high power density with the proper balance to meet all your performance requirements

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Brushless DC Motors

A Brushless DC Motor offers a great combination of durability, efficiency, torque and speed in a compact package suitable for your application

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Brush DC Motors

Brush DC Motors are small but with high power density to provide the advantages of low friction, low starting voltages, minimal iron losses and superb speed-to-torque performance

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Disc Magnet Motors

Disc Magnet Motors are advanced micro stepper motors which supply exceptional dynamic motor performance, finer step resolutions and higher acceleration unparalleled by any other stepper motor on today's market

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Can Stack Motors

Our Can Stack Motors are long life, high performance stepper motors with open loop control solutions, converting electrical pulses into mechanical movements using the simplest techniques making them suitable for many applications

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Linear Stepper Motor

Linear stepper actuators create translational motion, coupling directly to the load to achieve incremental linear displacement without position feedback while delivering high linear force in a small design

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Related Products

Portescap provides a variety of gearheads, encoders, and drives usable with a wide range of motors to optimize your motor performance

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[value]

Specification + Detail
MetricEnglish
Model Diameter{%BR%}(in) Diameter{%BR%}(mm) No-Load Speed{%BR%}(rpm) Typical No-Load Current{%BR%}(mA) Max continuous mechanical power (@ 25°C){%BR%}(W) Max Continuous Torque{%BR%}(mNm) Max Continuous Torque{%BR%}(oz-in) Torque Constant (oz-in/A) Torque Constant (mNm/A) Max motor speed{%BR%}(rpm)
22ECP35 ULTRA EC 0.87 22 13,200 30 55.0 14.30 2.02 2.46 17.40 50,000
22ECP45 ULTRA EC 0.87 22 8,370 25 80.0 27.70 3.92 3.82 27.00 47,000
22ECP60 ULTRA EC 0.87 22 8,050 40 120.0 50.50 7.20 3.99 28.30 38,000
22ECS45 ULTRA EC 0.90 22 68,500 300 120.0 26.80 3.80 0.47 3.30 73,000
22ECS60 ULTRA EC 0.90 22 43,000 270 180.0 44.50 6.30 0.74 5.10 60,000
22ECT35 ULTRA EC 0.87 22 10,330 100 34.0 20.00 2.83 1.54 10.90 20,000
22ECT48 ULTRA EC 0.87 22 10,140 155 54.0 41.60 5.89 1.59 11.20 20,000
30ECT64 ULTRA EC 1.18 30 21,930 575 187.0 136.00 19.26 1.49 10.50 30,000
30ECT90 ULTRA EC 1.18 30 22,100 575 244.0 219.00 31.01 2.99 21.10 25,000
35ECS80 Ultra EC 1.38 35 27,000 700 330.0 193.40 27.39 1.21 8.56 40,000
35ECS60 Ultra EC 1.38 35 38,500 900 262.0 120.60 17.08 0.85 6.01 40,000

[value]

Specification + Detail
MetricEnglish
Model Diameter{%BR%}(in) Diameter{%BR%}(mm) Max No-Load Current{%BR%}(mA) No-Load Speed{%BR%}(rpm) Continuous Stall Torque{%BR%}(mNm) Continuous Stall Torque{%BR%}(oz-in) Continuous Stall Current{%BR%}(A) Peak Torque for 1s{%BR%}(mNm) Peak Torque for 1s{%BR%}(oz-in) Torque Constant (oz-in/A) Torque Constant (mNm/A)
High Speed Motor (B0512N1035) 0.50 12.7 120 97,400 9.5 1.34 2.02 176.1 24.9 0.70 4.92
High Speed Surgical Motor (B0512N1029) 0.50 12.7 420 90,599 9.2 1.31 1.93 166.4 23.6 0.71 5.04
Cannulated Microdebrider / Shaver Motor (B0612H1005) 0.64 16.5 125 35,300 19.6 12.50 1.80 141.7 20.1 1.80 12.71
Cannulated Microdebrider / Shaver Motor (B0612H1006) 0.64 16.5 183 35,200 19.6 13.50 2.36 275.4 39.0 1.42 10.00
Cannulated Microdebrider / Shaver Motor (B0612H1007) 0.64 16.5 284 35,597 19.8 14.50 3.62 278.2 39.4 0.91 6.40
Orthopedic Surgical Motor (B1112N4004) 1.10 27.9 900 957 818.2 115.90 8.23 11 098.0 1 571.7 16.40 116.00

[value]

Specification + Detail
MetricEnglish
Model Diameter{%BR%}(in) Diameter{%BR%}(mm) No-Load Speed{%BR%}(rpm) No-Load Current{%BR%}(mA) Output Power{%BR%}(W) Stall Torque{%BR%}(oz-in) Stall Torque{%BR%}(mNm) Torque up to{%BR%}(oz-in) Torque up to{%BR%}(mNm) Torque Constant (oz-in/A) Torque Constant (mNm/A)
10NS61 Athlonix 0.39 10 10,700 3.6 0.7 0.10 0.71 0.12 0.85 1.09 7.7
12G88 Athlonix 0.47 12 9,900 9.0 2.4 0.89 6.30 0.44 3.10 1.22 8.6
16DCP Athlonix - Graphite 0.63 16 8,684 13.2 1.1 0.45 3.16 0.31 2.18 3.00 21.2
16DCP Athlonix - Precious Metal 0.63 16 9,259 3.3 1.3 0.48 3.37 0.34 2.39 3.00 21.2
16DCT Athlonix - Graphite 0.63 16 9,648 51.7 4.0 2.22 15.70 0.72 5.06 1.23 8.7
16DCT Athlonix - Precious metal 0.63 16 7,970 9.4 4.2 1.81 12.77 0.76 5.36 1.52 10.7
16DCT Athlonix - Precious metal 0.63 16 7,993 3.5 4.3 1.87 13.20 0.77 5.45 4.03 28.5
16N78 Athlonix 0.63 16 8,200 4.0 4.9 1.56 11.00 0.89 6.30 3.92 27.7
17DCT Athlonix - Graphite 0.67 17 9,653 9.6 4.5 2.29 16.16 0.81 5.75 4.94 34.9
17DCT Athlonix - Precious Metal 0.67 17 9,800 2.6 4.7 2.33 16.43 0.85 6.00 4.94 34.9
22DCT Athlonix - Graphite 0.86 22 8,490 67.1 8.4 9.20 64.80 1.60 11.50 0.90 6.7
22DCT Athlonix - Precious metal 0.86 22 8,131 15.7 9.4 11.30 79.60 1.90 13.30 2.00 14.1
22N78 Athlonix 0.87 22 6,350 1.0 10.0 4.53 32.00 1.83 12.90 10.20 72.0
24DCT Athlonix - Graphite 0.94 24 7,602 8.0 8.4 8.72 61.60 1.92 13.53 8.48 59.9
24DCT Athlonix - Precious Metal 0.94 24 7,631 4.0 8.6 8.79 62.10 1.95 13.79 8.48 59.9

[value]

Specification + Detail
MetricEnglish
Model Diameter{%BR%}(in) Diameter{%BR%}(mm) Min. Holding Force @ rated current @ .001" (0.0254 mm) / Step{%BR%}(N) Min. Holding Force @ rated current @ .001" (0.0254 mm) / Step{%BR%}(oz) Min. Holding Force @ 0.001" (0.0254mm) / Step (Un-energized){%BR%}(N) Min. Holding Force @ 0.001" (0.0254mm) / Step (Un-energized){%BR%}(oz) Max. Travel @ 0.001" (0.0254 mm) / Step{%BR%}(mm) Max. Travel @ 0.001" (0.0254 mm) / Step{%BR%}(in) Linear Travel Accuracy
35DBM-K 1.38 35.0 112 403 40.0 144.0 17.0 0.7 ± 1 Step
35DBM-L 1.38 35.0 112 403 40.0 144.0 63.5 2.5 ± 1 Step

[value]

Specification + Detail
MetricEnglish
Model Diameter{%BR%}(mm) Diameter{%BR%}(in) Max Efficiency{%BR%}(%) Nominal Torque{%BR%}(mNm) Nominal Torque{%BR%}(oz-in) Max. Recommended Input Speed{%BR%}(rpm)
R10 10.0 0.39 70 100.0 14.0 10,000
R13 13.0 0.51 55 250.0 35.0 7,500
R16 16.0 0.63 55 300.0 42.0 7,500
R22HT 22.0 0.86 62 3,700.0 0.5 12,000