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MOTION CONTROL
CORELESS DC MOTOR

CORELESS DC MOTOR

Product catalog summary

Overview of Coreless DC Motors
Coreless DC motors are a type of permanent magnet DC servo motor known for their coreless rotor/stator design. This design enhances energy conversion efficiency, activation and braking speed, operational reliability, and reduces electromagnetic interference while offering high energy density.

Key Advantages

Energy Efficiency: Coreless motors achieve efficiencies over 70%, with some models exceeding 90%, compared to 15-50% for traditional motors.
Fast Response: Mechanical time constants are under 28ms, with some reaching 10ms, enabling quick speed regulation.
Operational Stability: Speed fluctuations are controlled within 2%.
Low Electromagnetic Interference: High-quality brushes and commutator structures minimize interference.
High Energy Density: Coreless motors are lighter and more compact, maintaining a linear relationship between speed, voltage, torque, and current.

Features

Non-iron core design with a high precision and thin air gap.
High-performance rare earth magnets for high power density.
High torque and efficiency with no torque fluctuation.
Excellent volume-to-power ratio and low vibration.
Quick response and smooth operation with low noise.
Low starting torque and wide speed regulation range.
Effective heat dissipation with low temperature rise.

Technical Specifications
The document provides detailed technical data for various motor models, including nominal voltage, no-load speed, nominal speed, torque, current, output power, stall torque, efficiency, terminal resistance, torque constant, speed constant, speed torque gradient, terminal inductance, and rotor inertia. Each model operates within specific ambient and winding temperature ranges, with defined maximum speeds, axial play, and load capacities.

Additional Components

Planetary Gearboxes: Various types are available, offering different torque ranges and dimensions.
Magnetic Encoders: Available with different counts per turn (CPT) and channels, suitable for integration with the motors.

Conclusion
Coreless DC motors from Motion Control Products Ltd. offer superior performance characteristics suitable for applications requiring high efficiency, rapid response, and reliable operation. The modular system allows for customization with gearboxes and encoders to meet specific application needs.

Motor Specifications

Various motor models are detailed with specifications such as nominal voltage, no-load speed, nominal speed, torque, current, output power, stall torque, and efficiency.
Ambient temperature ranges from -20℃ to +65℃, with a maximum winding temperature of +85℃.
Maximum speed is 12000rpm, with axial play between 0.05 - 0.15 mm.
Motors have 1 pole pair and 5 commutator segments.
Motor weights vary, with maximum axial and radial loads specified.

Planetary Gearbox Specifications

Gearboxes are available in different types (P12H, P16H, P22H) with varying torque capacities and efficiencies.
Specifications include radial and axial play, maximum force for press fits, and recommended temperature range.
Gear ratios and gearbox lengths are provided for different stages.

Encoder Specifications

Encoders such as HEDS-5540 and magnetic encoders are detailed with counts per turn, number of channels, and maximum operating frequency.
Operating temperature ranges and supply voltage requirements are specified.

Modular System

Details on motor and gearbox combinations are provided, including overall lengths for different configurations.

Technical Specifications Overview
Planetary Gearbox Models: P32H, P35H, P42H
General Specifications:

Radial play: ≤0.1 mm
Axial play: ≤0.2 mm
Max. force for press fits: 100 N
Max. radial and axial load: 8 N
Recommended temperature range: -20°C to +125°C

Model-Specific Data:
P32H:

Max. continuous torque: 1-6 Nm (varies by stages)
Max. intermittent torque: 1.25-7.5 Nm
Max. efficiency: 59-90%
Weight: 125-213 g
Gearbox length: 31.6-56.8 mm
Gear ratios: Range from 4 to 3174

P35H:

Max. continuous torque: 3-20 Nm
Max. intermittent torque: 5-30 Nm
Max. efficiency: 59-90%
Weight: 210-350 g
Gearbox length: 40.8-67.2 mm
Gear ratios: Range from 4 to 144

P42H:

Max. continuous torque: 3-25 Nm
Max. intermittent torque: 5-36 Nm
Max. efficiency: 59-90%
Weight: 250-580 g
Gearbox length: 41.2-86.2 mm
Gear ratios: Range from 3.11 to 761.76

Modular System:
Each gearbox model can be paired with specific motors, affecting the overall length of the system.

Terminology:

Nominal Voltage: Voltage applied between two powered phases.
No Load Speed: Speed at which the motor runs unloaded at nominal voltage.
No Load Current: Current drawn by the motor when unloaded.
Nominal Speed and Torque: Set for operation at nominal voltage and torque at 25°C.
Stall Torque and Current: Torque produced at standstill and its corresponding current.
Max. Efficiency: Optimal input-output power relationship at nominal voltage.
Terminal Resistance and Inductance: Measured between two connections.
Torque and Speed Constants: Represent the relationship between torque, speed, and voltage.
Speed/Torque Gradient: Indicates motor performance.
Mechanical Time Constant: Time for rotor acceleration to 63% of no load speed.
Rotor Moment of Inertia: Mass moment of inertia of the rotor.

Contact Information:
Motion Control Products Ltd, 11-15 Francis Avenue, Bournemouth, Dorset, UK, BH11 8NX. Tel.: +44 (0)1202 599922, [email protected], www.motioncontrolproducts.com

Catalog excerpts

Coreless motor is a permanent magnet DC servo motor, compared to common motor, the difference is the use of coreless rotor/stator. Coreless motor has following advantages: • • • • • The maximum energy conversion efficiency (an index of energy saving characteristics) : its efficiency in general is more than 70%,some products can reach above 90%(the common core motor at 15-50%); Activation, brake fast, fast response: mechanical time constant less than 28ms, part of the product can reach 10ms, the recommended operating region of the state of high speed run, the flexible speed regulation; Reliable...

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Motor model Nominal voltage V No load speed rpm No load current mA Nominal speed rpm Nominal torque mNm Nominal current A Output power W Stall torque mNm Stall current A Max. efficiency % Terminal resistance Ω Torque constant mNm/A Speed constant rpm/V Speed torque gradient rpm/mNm Terminal inductance mH Rotor inertia gcm2 Wnl InI Wc Tc Ic Pc Tmax Imax ηmax Rt Kt Wt Δn/ΔT L J Ambient temperature Axial play Motor weight Max. Axial load (dynamic) Max. force for press fits (static) Max. radial load, 4mm from flange Motion Control Products Ltd. Modular System: Motor + Planetary Gearbox or Encoder...

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MOTOR TECHNICAL DATA Motor model Nominal voltage V No load speed rpm No load current mA Nominal speed rpm Nominal torque mNm Nominal current A Output power W Stall torque mNm Stall current A Max. efficiency % Terminal resistance Ω Torque constant mNm/A Speed constant rpm/V Speed torque gradient rpm/mNm Terminal inductance mH Rotor inertia gcm2 Wnl InI Wc Tc Ic Pc Tmax Imax ηmax Rt Kt Wt Δn/ΔT L J Ambient temperature Axial play Motor weight Max. Axial load (dynamic) Max. force for press fits (static) Max. radial load, 4mm from flange Motion Control Products Ltd. Modular System: Motor + Planetary...

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Motor model Nominal voltage V No load speed rpm No load current mA Nominal speed rpm Nominal torque mNm Nominal current A Output power W Stall torque mNm Stall current A Max. efficiency % Terminal resistance Ω Torque constant mNm/A Speed constant rpm/V Speed torque gradient rpm/mNm Terminal inductance mH Rotor inertia gcm2 Wnl InI Wc Tc Ic Pc Tmax Imax ηmax Rt Kt Wt Δn/ΔT L J Ambient temperature Axial play Motor weight Max. Axial load (dynamic) Max. force for press fits (static) Max. radial load, 4mm from flange Motion Control Products Ltd. 95g Modular System: Motor + Planetary Gearbox or Encoder...

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CORELESS DC MOTOR

CORELESS DC MOTOR

Catalog excerpts

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