Precision & Accuracy

Precision & Accuracy

Torque Graphic

Definition

In a motion application, accuracy is the ability of a motor to achieve an exact rotational position. Precision is the ability of a motor to consistently repeat the desired motion. Applications such as medical analyzers require precision and accuracy in microns as samples are handled and pass through various stages of the workflow. The mechanical construction and added components determine the accuracy and precision of each motion solution.

Solution Overview

The number of pole pairs of the magnet determines the degree of accuracy; higher pole pairs provide increased accuracy. Innovative construction concepts deliver high accuracy without the need for additional components, reducing the total cost of ownership.

If necessary, external components are added to the motor to enhance the accuracy. The two key components are encoders and gearboxes. Encoders provide a means to track and control the position of the motor, ensuring accurate movement.

Gearboxes provide finer mechanical accuracy as they divide the shaft rotation into finer increments based on the gear ratio. The output shaft is capable of moving in smaller increments mechanically, leading to finer movements.

Portescap motor designs ensure high precision based on their internal construction. Years of design experience go into every motor, yielding consistency with every movement of our motors.

Portescap Technology

Portescap's disc magnet steppers, thanks to their unique disc design, allow for a higher number of pole pairs than permanent magnet step motors of similar size. The P110 has 40 steps/revolution while a typical 15mm permanent magnet step motor can deliver only 20 steps/revolution.

Our MR2 encoder provides a line count up to 512, giving the ability to position the motor shaft with high accuracy. The motor shaft movement is monitored and can be corrected to the required position via the closed-loop magnet-resistive system.

The R series gearboxes provide ratios up to 1,090:1, making small incremental shaft movements achievable. The increased resolution gives new options when fine positioning is required for an axis movement.

Portescap's linear actuators convert rotational motion to linear motion, eliminating external components and driving finer movements. Different lead screw pitches give options on the level of accuracy, allowing it to be tailored for each motion axis.

Insulin pumps
Radiation therapy and imaging
Diagnostic analyzers
Pipettes
Gas analyzers
Land surveying
Electronic assembly
Valve actuation

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)
22ECT60 ULTRA EC 0.87 22 12,350 170 86.0 66.90 9.47 2.66 18.77 20,000
22ECT82 ULTRA EC 0.87 22 7,800 130 104.0 98.30 13.92 4.36 30.79 20,000

[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)
ENT Surgical Gearmotor (B0512N408) 0.50 12.7 855 11,829 39.5 5.60 2.44 449.3 63.6 2.40 17.00
ENT Surgical Gearmotor (B0512N4081) 0.50 12.7 375 11,910 41.3 5.90 1.27 490.7 69.5 4.80 34.10
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
Arthroscopic Surgical Gearmotor (B0614H4041) 0.65 16.5 645 7,277 117.7 16.70 4.37 1 865.2 264.1 4.00 28.30
Arthroscopic Surgical Gearmotor (B0614H4042) 0.65 16.5 600 4,233 119.4 16.90 2.59 1 110.1 157.2 6.86 48.50
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
Large Bone Orthopedic Surgical Motor (B1210N1025) 1.24 31.5 1 130 16,928 76.2 10.80 16.50 1 432.4 202.8 0.77 5.41
Large Bone Orthopedic Surgical Motor (B1210N1026) 1.24 31.5 1 060 15,887 82.1 11.60 13.30 1 562.6 221.3 1.02 7.20
Large Bone Orthopedic Surgical Motor (B1210N1027) 1.24 31.5 850 15,245 88.0 12.50 11.40 1 720.1 243.6 1.28 9.01
Cannulated Large Bone Orthopedic Surgical Motor (B1210N1021) 1.24 31.5 1 130 16,928 76.2 10.80 16.50 1 432.4 202.8 0.77 5.41
Cannulated Large Bone Orthopedic Surgical Motor (B1210N1022) 1.24 31.5 1 060 15,887 82.1 11.60 11.40 1 720.1 243.6 1.02 7.20
Cannulated Large Bone Orthopedic Surgical Motor (B1210N1023) 1.24 31.5 850 15,245 88.0 12.50 11.40 1 720.1 243.6 1.28 9.01

[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)
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

[value]

Specification + Detail
MetricEnglish
Model Diameter{%BR%}(in) Diameter{%BR%}(mm) Holding Torque, Min{%BR%}(mNm) Holding Torque, Min{%BR%}(oz-in) Detent Torque, Max{%BR%}(mNm) Detent Torque, Max{%BR%}(oz-in) Linear Travel Accuracy Steps per Revolution
26M048D 1.02 26 14.5 2.1 4.2 0.6 7.5 48
35M048D 1.38 35 25.0 3.5 6.3 0.9 7.5 48

[value]

Specification + Detail
MetricEnglish
Model Diameter{%BR%}(in) Diameter{%BR%}(mm) Holding Torque, Typical{%BR%}(mNm) Holding Torque, Typical{%BR%}(oz-in) Detent Torque, Max{%BR%}(mNm) Detent Torque, Max{%BR%}(oz-in) Linear Travel Accuracy Steps per Revolution
P010 104 0.39 10 1.5 0.21 0.9 0.13 9 40

[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
20DAM-L 0.79 20.0 31 110 20.9 75.0 50.0 2.0 ± 1 Step
35DBM-K 1.38 35.0 403 112 40.0 144.0 17.0 0.7 ± 1 Step
35DBM-L 1.38 35.0 403 112 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)
R16 16.0 0.63 55 300.0 42.0 7,500
R22 22.0 0.87 50 600.0 85.0 5,000
R22HT 22.0 0.86 62 3,700.0 0.5 12,000

[value]

Specification + Detail
MetricEnglish
Model Resolution{%BR%}(line counts) Type
MR2 4,8,16,20,32,40,50,64,80,100,128,160,200,250,256,400,500, 512 Magnetoresistive Encoder