Printed Motor Works offer two distinct brushless pancake DC motor families: the XR Series using an external rotor and the IR Series using an internal rotor. All our compact brushless DC motors can be tailored to meet your exact specification.
XR Series Motors
The XR Series is an extremely compact and powerful DC electric motor design using an external rotor or out-runner design. The XR Series is available in two standard sizes, based on stack length, and with four winding options as standard. Both standard motor sizes have been designed for volume applications and do not incorporate rare earth ferrite magnetic material. Additionally the XR Series can be fitted with an integrated encoder giving 3312 counts per revolution. The XR Series outside rotor motors are very efficient on load with very low noise and are excellent for continuous use applications that require a pancake shaped brushless DC motor envelope.
If these standard solutions don’t meet your requirements we will work with you to develop a specification perfectly optimised for your application. Custom stack lengths, winding configurations and magnetic material options can be designed upon request.
Applications for the XR Series motors include package handling systems, automatic door opening systems, stair lifts and direct drive in-wheel motors for robots and other mobility systems.
The following data sheets are available for the XR Series brushless DC pancake motors:
IR Series Motors
The IR Series is a compact brushless DC motor with a conventional internal rotor design but with very high slot fill resulting in class leading torque density. We offer two standard sizes, based on stack diameter, the IR9 and IR16 with a range of standard windings and stack lengths. If these standard solutions don’t meet your requirements we will work with you to develop a specification perfectly optimised for your application. Printed Motor Works’ maximum slot fill manufacturing techniques and access to powerful grades of magnets means that we can optimise your motor to 94% efficiency at your load point. The parameters for motor optimisation are: speed, voltage, torque, efficiency, cogging torque and thermal performance.
Applications for the IR Series flat DC motors include automatic door opening systems, aerospace & defence robotics, paper handling, autonomous vehicle testing for the automotive industry.
Below is a table with some examples from the IR Series internal rotor motor range:
|IR Series Compact Motors Table|
-click part number to open drawing
|Rated Continuous Torque @ 50°C||T 25||Nm||1.3||0.71||0.76||1.75||3.2||3.2||11.54||10.2||52.4||1.13|
|Rated Output Power||P||W||148||230||320||550||1000||1139||580||3000||6000||35.5|
|Maximum Recommended Speed||Nmax||RPM||1295||8870||10000||350|
|Peak Output Power||P||W||149||327||1105||3200||6750||106|
|Nominal Operating Voltage||E||Volts||42||63||12||90||125||125||317||24||24||400|
|Typical Operating Voltage Range||E||Volts||10-62||5-25||0-700||0-700|
|Rated Continuous Current||I||Amps (RMS)||7||5||29||8.5||10.5||10.5||1.5||127||313||0.1414|
|Line-Line Resistance||R L-L||Ohms||1.52||1.25||0.038||0.63||0.34||0.21||49.8||1.9||4.5||122.9|
|Back EMF Constant||K E||V/kRPM||27||16||2||25||36||26||670||8.84||13.62||503.36|
|Torque Constant||K T||Nm/Amp||0.26||0.154||0.016||23.9||0.344||0.22||5.5||0.84||0.12||5.79|
|Armature Inductance (Line-Line)||L||mH||3.23||2.0-3.0||0.015||0.8||1.2||312||0.025||0.1||451.6|
|Length (mounting face to face)||mm||77||68||80||82||70||55||55||135||139||52.5|
|Permitted Radial Load (50% safety factor)||N||400||150|
|Permitted Axial Load (50% safety factor)||N||150|
The following data sheets are available for the IR Series compact BLDC motors: