Infranor BR Pancake Torque Motors Review: Specs, Price and Applications
Infranor BR is a shallow synchronous servo-motor family with 70, 100, 130 and 180 mm frames. Its supplied model table identifies BR02, BR03, BR04 and BR07, with 20 poles and several torque classes. The table’s rated operating points refer to 48 VDC winding examples.
Quick Verdict
A relevant family for a wide, shallow direct-drive axis. Use the individual model table rather than combining the summary torque span with every frame size.
Infranor BR Pancake Torque Motors at a Glance
Specification | Details |
Models | BR02, BR03, BR04 and BR07 |
Frames | 70, 100, 130 and 180 mm |
Pole count | 20 |
BR02 rated point | 0.80 N.m at 3,000 rpm |
BR03 rated point | 2.35 N.m at 3,000 rpm |
BR04 rated point | 3.70 N.m at 1,500 rpm |
BR07 rated point | 5.80 N.m at 1,500 rpm |
Table winding basis | 48 VDC; custom windings described |
Design and Engineering Assessment
The model table distinguishes stall torque from rated torque and speed. Those operating points provide a better selection basis than the shorter introductory range, which does not describe every table entry.
A direct-drive wheel or indexer applies the load inertia without a reduction stage. The selected frame and drive need enough acceleration margin while maintaining the required thermal duty.
Motor Sizing and Motion Quality
A servo motor converts drive current into torque, while its speed envelope is constrained by the winding, supply and mechanical load. Size it against both the repeated thermal duty and the most demanding acceleration. The mechanism’s reflected inertia and transmission ratio are central to that calculation. Selecting a larger motor can increase rotor inertia and does not automatically improve cycle time.
Position feedback makes closed-loop correction possible, but the encoder is only part of the positioning system. Mounting stiffness, coupling compliance, gearbox behavior and the location of the measured shaft all influence the error observed at the tool or load. A motor-mounted encoder cannot directly measure every source of lost motion farther along the transmission.
Drive, Brake and Mechanical Fit
Select the drive and motor as an electrically compatible pair. The drive needs suitable current capability, feedback support and commutation information, while the motor winding must suit the supply. For a replacement, include the exact shaft, flange, connector orientation and brake option in the ordering specification. Small mechanical differences can alter the coupling arrangement or cable routing.
The mounting surface is also a thermal path. A compact motor in an enclosed machine may operate differently from the same motor on an open test fixture. Check the actual duty, ambient conditions and available heat transfer before treating a catalogue power rating as continuously available in every installation.
Commissioning and Maintenance
Verify rotation direction, encoder interpretation and brake sequencing before enabling full motion. Commission with the expected load, then assess tracking and settling through a realistic cycle. If the mechanism includes a gearbox or flexible coupling, tune the complete axis rather than relying solely on unloaded motor behavior.
Service preparation should preserve the approved motor parameters, drive configuration and reference procedure. Track connector condition, cable flexing and coupling alignment alongside the motor itself. A recorded baseline makes it easier to identify whether a later motion problem originates in the electrical system, feedback chain or mechanics.
Applications and Selection
Direct drives, robotics, exoskeletons, wheel hubs and indexing mechanisms.
For Infranor BR Pancake Torque Motors, define the actual machine duty before selecting an ordering configuration. Include the required operating point, available installation space, environment and control interfaces. The specification table describes the product or family; the surrounding machine determines which of those features matters for the intended job.
Price and Value
Price: Request a quote for the exact configuration. Compare the product, compatible control equipment, required mechanical parts, cabling and commissioning as one installed system. A component price alone does not represent the cost of a working automation axis.
Evaluate an alternative against the same duty and acceptance criteria. Match the continuous operating requirement first, then compare transient capability, feedback, mechanical fit and support. This avoids choosing between superficially similar products whose ratings describe different operating conditions.
Pros and Cons
Advantages
Shallow high-pole-count geometry
Several direct-drive operating points
Limitations
Winding and feedback selection remain necessary
Summary ranges must not replace individual model data
Who Should Consider Infranor BR Pancake Torque Motors?
Consider Infranor BR Pancake Torque Motors for direct drives, robotics, exoskeletons, wheel hubs and indexing mechanisms. Establish the required operating point and installation interfaces before choosing the configuration, and use a representative loaded cycle as the acceptance basis.
Infranor BR Pancake Torque Motors FAQ
What is Infranor BR Pancake Torque Motors?
Infranor BR is a shallow synchronous servo-motor family with 70, 100, 130 and 180 mm frames.
Which specifications matter most?
Models: BR02, BR03, BR04 and BR07. Frames: 70, 100, 130 and 180 mm. Interpret the remaining ratings within the selected configuration and operating duty.
What applications should it be considered for?
Direct drives, robotics, exoskeletons, wheel hubs and indexing mechanisms.
What is the main advantage?
Shallow high-pole-count geometry. Several direct-drive operating points.
What limitation affects integration?
Winding and feedback selection remain necessary. Summary ranges must not replace individual model data.
What is the price?
Request a quote for the selected model, options and delivery terms. Any stated example price applies only to its identified seller configuration and may change.
How should an alternative be compared?
Use the same operating duty, installation envelope and acceptance requirements. Compare the complete system, including the compatible drive or controller, mechanical interfaces and commissioning effort.
What should be specified when ordering?
State the complete model or configuration, intended operating point, mechanical interfaces and required control equipment. Include the relevant environment, accessories and quantity so that the quotation describes a usable system.
Prices are indicative and may change. Confirm the final configuration, commercial terms and delivery schedule before ordering.
