SMAC HT35 Brushless Torque Motors Review: Specs, Price and Applications
SMAC HT35 is a 35 mm brushless motor whose supplied specification separates 0.121 Nm rated torque at 0.9 A from 0.556 Nm peak torque at 48 VDC and 4 A. The listed rated speed is 2,035 rpm, while 2,570 rpm is a no-load speed. Encoder and gearbox choices are additional configuration items.
Quick Verdict
A useful compact-motor candidate when the rated point fits the load and the selected feedback supports the control requirement. Keep the no-load, rated and peak values separate during comparison.
SMAC HT35 Brushless Torque Motors at a Glance
Specification | Details |
Model | HT35 |
Diameter | 35 mm |
Rated torque | 0.121 Nm at 0.9 A |
Peak torque | 0.556 Nm at 48 VDC, 4 A |
Rated speed | 2,035 rpm |
No-load speed | 2,570 rpm |
Feedback choices listed | 2K or 24K encoder configurations |
Gear options listed | 4:1 or 16:1; other ratios by request |
Design and Engineering Assessment
At the stated rated torque and speed, shaft power is approximately 25.8 W by a unit conversion. It would be incorrect to multiply peak torque by no-load speed and present the result as continuous rated output.
A 24K encoder designation needs the manufacturer’s counting convention before conversion into an angular measurement increment. Controller decoding and the mechanical transmission then determine what that increment means at the load.
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
Small rotary mechanisms requiring a configured brushless motor and optional feedback or gearing.
For SMAC HT35 Brushless 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
Clearly separated rated and peak torque points
Optional feedback and gearing
Limitations
Peak torque is not a continuous allowance
Encoder counting convention and selected drive require confirmation
Who Should Consider SMAC HT35 Brushless Torque Motors?
Consider SMAC HT35 Brushless Torque Motors for small rotary mechanisms requiring a configured brushless motor and optional feedback or gearing. Establish the required operating point and installation interfaces before choosing the configuration, and use a representative loaded cycle as the acceptance basis.
SMAC HT35 Brushless Torque Motors FAQ
What is SMAC HT35 Brushless Torque Motors?
SMAC HT35 is a 35 mm brushless motor whose supplied specification separates 0.121 Nm rated torque at 0.9 A from 0.556 Nm peak torque at 48 VDC and 4 A.
Which specifications matter most?
Model: HT35. Diameter: 35 mm. Interpret the remaining ratings within the selected configuration and operating duty.
What applications should it be considered for?
Small rotary mechanisms requiring a configured brushless motor and optional feedback or gearing.
What is the main advantage?
Clearly separated rated and peak torque points. Optional feedback and gearing.
What limitation affects integration?
Peak torque is not a continuous allowance. Encoder counting convention and selected drive require confirmation.
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.
