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Frequently Asked Questions
Find answers about ordering, technical specs, lead times, and industrial motion control sourcing.
How do I know whether a product is direct-buy or inquiry-only?
Each product detail page exposes the purchase mode. Direct-buy items show cart actions, while inquiry-mode items route into RFQ and support flows.
Can guests submit an inquiry?
Yes. The inquiry API supports guest submission, while signed-in users can later review inquiry history from the account center.
What details should I include in an RFQ?
Include quantity, target market, delivery expectations, voltage or torque requirements, and any customization notes that affect feasibility.
Are lead times and MOQ fixed for all products?
No. Standard catalog items and OEM projects follow different operational rules, which is why the storefront separates direct-buy and RFQ flows.
Do you support matched drivers, accessories, and assemblies?
Yes. The catalog and support content are structured to help buyers navigate motors, drivers, power supplies, gearboxes, and custom motion combinations.
Where can I track orders or RFQs after submission?
Orders, addresses, wishlist items, and inquiry records are available through the account center after sign-in.
Why does a stepper still sound rough after I raise the microstep setting?
Microstep count mainly changes how the driver shapes phase current. If the axis is still exciting a structural resonance, the motor can remain noisy even at 16x or 32x microstepping. Treat microstepping as one tuning lever, not a universal fix. Stable results usually come from matching current, acceleration, coupling stiffness, and supply headroom at the same time.
When is a closed-loop stepper a better fit than open-loop?
Open-loop stepper is still the right first stop for many catalog axes, but closed-loop becomes attractive once recovery from a lost position is more expensive than the encoder and tuned driver. Use it when the axis must keep a tighter error envelope, survive load variation, or report fault conditions during unattended operation.
How much DC bus margin should I keep for BLDC peak-load events?
A BLDC drive that looks fine at nominal load can still trip on acceleration spikes, fast decel energy, or a power supply that collapses under multiple axes starting together. For catalog-level planning, leave enough voltage and current margin to absorb worst-case motion events and confirm whether braking or regen handling is required upstream.
When does gearbox backlash become the real servo positioning limit?
Servo tuning can only correct what the feedback loop can still observe and influence. If the commanded move sits inside gearbox backlash, the load may not respond even though the motor shaft does. This matters most on short indexing moves, reversal-heavy profiles, and inspection fixtures where direction changes are frequent and positional error cannot be averaged out over longer travel.
What inertia ratio is still reasonable before servo tuning becomes unstable?
The usable inertia ratio depends on compliance, backlash, coupling stiffness, and the profile you actually plan to run. Published ratios are guidance, not a promise. If the ratio climbs quickly, consider a gearbox, a different frame, or a slower move profile before assuming the controller alone will recover the margin.
Where should I start with stepper driver current and idle current?
Most field problems start with current guessed from online examples rather than the motor data. Set the driver from the motor rating first, then measure case temperature and missed-step risk under real load. Idle current should reduce heat without starving the axis during restart or holding conditions that still need torque.
What wiring rule prevents most encoder and pulse-dir noise issues?
Noise issues are usually wiring topology problems before they are mysterious firmware bugs. Mixed returns, parallel power and signal routing, and random shield termination points create most of the trouble. Build one clean cabinet reference strategy first, then route high-current motor wiring and low-level feedback as separate systems with deliberate crossing points.
How do I estimate starting torque margin before choosing a frame size?
A catalog motor can look large enough until acceleration and reflected inertia are added. Start from the full motion requirement before you compare datasheet holding torque values. Then leave margin for supply variation, heat, and the mismatch between a clean calculation and the real mechanism.
Which compliance files should I ask for before PO release?
For production release, the useful question is not only whether a family is compliant in principle. You need the exact declarations, material statements, and labeling support that match the shipped configuration and destination market. This is especially important when the shipment mixes catalog parts, power supplies, or integrated assemblies that may trigger different file expectations.
How should motors, drivers, and gearboxes be packed for export consolidation?
Motors and gearboxes tolerate weight better than drivers, connectors, or small accessories. Mixed export cartons need internal separation so dense hardware does not turn into impact energy against electronics in transit. Use moisture control, clear carton labeling, and receiving-friendly line-item identification when the shipment combines several motion subassemblies.
Related Technical Terms
Key motion control terminology referenced in the FAQs above.
The rate of change of speed, which directly drives torque demand through inertia.
View in GlossaryMechanical play that appears when direction reverses before the load fully follows the motor.
View in GlossaryThe supply voltage seen by the drive power stage, which affects speed capability and transient stability.
View in GlossaryA control architecture that uses feedback to correct position or speed error rather than assuming the command was perfectly executed.
View in GlossaryThe natural resistance a permanent-magnet stepper rotor produces even with no phase current applied.
View in GlossaryThe share of time an axis spends under load, which heavily affects heating and continuous torque planning.
View in GlossaryGrounding and shielding practice used to control electrical noise in motion cabinets and field wiring.
View in GlossaryThe speed reduction and torque multiplication relationship between motor and output shaft.
View in GlossaryStill have questions?
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