17HS stepper motor datasheet checker for RFQ screening
Turn a 17HS datasheet row into a decision: whether the sheet is usable for first-pass selection, where it can fail, and what to ask before RFQ or sample purchase.
Tool intent
Immediate
Report evidence
16 sources
Review cadence
6 months
Core Conclusions
The report layer explains why the tool result is bounded. Each conclusion states who should use it, who should not, and which evidence supports the claim.
NEMA 17 is a mechanical frame context and 17HS is a supplier-family label. 17HS4401, 17HS4401N, 17HS4401S, and longer-stack 17HS19 rows can show different torque or winding values, so exact suffix and supplier revision are the identity.
Use when: Buyers comparing supplier PDFs, marketplace listings, and sample lots.
Do not use when: Teams expecting one universal 17HS pinout or one fixed torque value.
S1-S5, S11-S12, S16A 40-45 N.cm sheet can still miss the target at speed if inductance, supply voltage, current limit, or thermal duty are mismatched.
Use when: Designers screening torque margin before requesting speed-torque curves.
Do not use when: Projects releasing production BOMs from holding torque alone.
S6Rated current, phase resistance, and inductance define nameplate voltage and current-response behavior. A substitute with the same torque but different winding is not equivalent.
Use when: Procurement teams approving alternates or second sources.
Do not use when: Teams without driver current, supply voltage, or thermal constraints.
S2-S5The same 17HS motor can be acceptable with one driver-current and cooling setup but risky with another board or firmware pulse timing.
Use when: 3D printer, CNC, camera slider, and robotics builders using chopper drivers.
Do not use when: Applications with unknown firmware timing or sealed enclosures.
S7-S9The page should convert a datasheet into actions: request speed-torque curve, coil-temperature test conditions, exact suffix, cable/connector details, and RoHS/REACH evidence when regulated supply chains matter.
Use when: Teams moving from search result to sample order.
Do not use when: Buyers who only need a downloadable PDF archive.
S1-S16Nameplate voltage
rated current x phase resistance
Time constant
phase inductance / phase resistance
Dynamic screen
holding torque x derating factors
Release gate
supplier curve + thermal test
Datasheet Field Map
Use this table when comparing a search-result PDF, marketplace listing, and supplier confirmation sheet.
| Field | What it means | Decision use | Risk if ignored |
|---|---|---|---|
| Model suffix | Exact supplier identity: winding, stack, shaft, cable, lead count. | Reject substitutions that hide suffix changes. | Listings may shorten 17HS4401N/S to 17HS4401. |
| Step angle | Full-step angle, usually 1.8 degree or sometimes 0.9 degree. | Determines steps/rev and motion resolution. | Does not prove torque, current, or accuracy by itself. |
| Holding torque | Static torque at rated current while stopped. | Initial load-screen input only. | Can overstate running torque at high RPM. |
| Rated current/phase | Coil current target per phase under rated conditions. | Sets driver current limit and thermal burden. | Board-level driver limits may be below chip headline current. |
| Resistance/phase | DC coil resistance used to compute nameplate voltage. | Checks whether the winding matches the published voltage. | A different resistance changes current setting and heat. |
| Inductance/phase | Coil current response characteristic, often measured at 1 kHz. | Flags high-speed torque risk and substitution mismatch. | High L/R can reduce current rise at speed. |
| Body length | Stack length such as 34, 40, 48, or 60 mm class. | Screens envelope and rough torque tier. | Same 42 mm face can have very different stack length. |
| Lead count / connector | 4-wire bipolar leads, plug, cable length, and color code. | Controls wiring compatibility and assembly time. | Wire colors are not universal; verify coil pairs. |
Standards Boundary And Unknowns
A common sourcing failure is treating "NEMA 17" or "17HS" as a full specification. The public evidence supports a narrower rule: frame labels help mechanical matching, while the exact suffix and revision-controlled sheet decide electrical release.
| Claim | Evidence boundary | Decision rule | Missing data to mark TBD | Refs |
|---|---|---|---|---|
| NEMA 17 is a mounting family, not a performance class | NEMA ICS 16 covers motion/position motors and related controls; manufacturer guidance maps NEMA17 to about a 1.7 inch / 42 mm flange. | Use NEMA17 to check face size, bolt pattern, and mechanical fit only. | Torque curve, rated current, resistance, inductance, rotor inertia, shaft load, and insulation class still require the exact model sheet. | S11-S12 |
| 17HS4401-class defaults are not universal | Public 17HS examples range from about 40 N.cm / 1.7 A rows to 59 N.cm / 2 A longer-stack rows. | Treat default values as an example only; replace every field before RFQ or sample release. | If the supplier cannot confirm suffix, stack length, and I/R/L values, mark the candidate as TBD / no reliable public data. | S2-S5, S16 |
| Driver-board implementation can override chip headline limits | A4988 carrier documentation distinguishes active current limiting and notes full-step coil current behavior; TI and ADI datasheets define separate supply/timing/current envelopes. | Validate board-level current setting, cooling, firmware pulse timing, and supply voltage together. | Public motor datasheets rarely specify your carrier-board heatsinking, enclosure airflow, or firmware acceleration profile. | S7-S9, S13 |
| Compliance statements need article-level evidence | RoHS, REACH Article 33, and SCIP obligations are tied to regulated substances and EU-market articles, not just motor torque/current values. | Ask for RoHS declaration, REACH/SVHC statement, cable/connector material declarations, and revision/date on the supplier file. | If only a marketplace page says "RoHS" with no declaration or revision, keep compliance status as TBD. | S14-S15 |
Comparison Layer
This page is intentionally not another generic NEMA 17 page. It owns the datasheet interpretation job and links out to broader pages when the user needs frame or family context.
| Resource | Best for | Evidence needed | Limitation |
|---|---|---|---|
| 17HS datasheet page | Reading one model sheet and deciding if it is RFQ-ready. | Exact model suffix, I/R/L values, body length, driver target. | Does not replace a measured speed-torque curve. |
| Generic NEMA 17 guide | Understanding frame size and broad application fit. | Frame, shaft, mounting, broad torque class. | Too broad for second-source approval. |
| 17HD family guide | Comparing HD-labeled variants and stack tiers. | 17HD model family, torque tier, current, envelope. | Not every 17HS supplier uses 17HD naming. |
| Supplier PDF only | Checking official dimensions and compliance statements. | First-party PDF and revision/date if available. | Usually gives fields, not selection logic. |
Evidence Quality Ladder
17HS search results often mix official files, distributor copies, and mirrored PDFs. Use the ladder to decide whether a row can support RFQ, engineering review, or only a preliminary search note.
| Evidence type | Confidence | Accept when | Escalation path |
|---|---|---|---|
| First-party revision-controlled PDF | Highest | Supplier name, model suffix, revision/date, mechanical drawing, electrical table, and test conditions are visible. | Still request speed-torque curve if the sheet only lists holding torque. |
| Supplier product page with downloadable sheet | Medium-high | Page data and attached PDF match on suffix, torque, current, resistance, inductance, shaft, and cable. | Ask sales/FAE to confirm which file controls if page and PDF disagree. |
| Distributor page | Medium | Useful for procurement availability and basic attributes, but not enough for engineering release. | Trace back to manufacturer PDF or request a controlled drawing pack. |
| PDF mirror or forum-uploaded sheet | Low | Use only as a clue to identify possible model families. | Mark as TBD / no reliable public data until supplier confirms current revision. |
Risk Controls
The highest risk is not that a datasheet lacks numbers. It is that copied or shortened numbers hide a different winding, driver boundary, or thermal condition.
| Risk | Impact | Signal | Mitigation |
|---|---|---|---|
| Suffix compression | Wrong winding or torque class ordered. | Listing title omits N/S/B suffix or lead variant. | Ask supplier to confirm exact label printed on motor and PDF row. |
| Holding torque misuse | Motor stalls at speed despite a strong static rating. | No speed-torque curve or voltage/current condition. | Request curve at target supply voltage and current limit. |
| Driver overheating | Skipped steps, shutdown, or shortened board life. | Current limit near rated phase current in a closed enclosure. | Measure coil and driver temperature under duty cycle. |
| Connector mismatch | Assembly rework or reversed phase wiring. | Sheet lists wire colors but buyer uses another cable harness. | Verify coil pairs with meter and lock connector drawing. |
| Mirrored data | Old or copied spec row survives after supplier revision. | No date, no manufacturer, or only a PDF mirror. | Use mirrors as clues, then obtain current supplier confirmation. |
Minimum RFQ Data Pack
A passing checker result should become a supplier data request, not an automatic purchase order. These fields close the gaps that public 17HS datasheets usually leave open.
| Request | Fields to ask for | Decision reason |
|---|---|---|
| Exact identity | Full model suffix, supplier part number, motor label photo, drawing revision/date. | Prevents shortened 17HS4401-style titles from hiding winding, shaft, cable, or connector changes. |
| Electrical release pack | Rated current, phase resistance, phase inductance, insulation class, dielectric test, operating temperature statement. | Lets engineering verify driver current, heat, winding match, and environmental boundary before samples. |
| Motion evidence | Speed-torque curve at requested voltage/current, rotor inertia, detent torque, radial/axial shaft load limits. | Converts holding torque into running-risk evidence for the real axis. |
| Harness and compliance evidence | Connector drawing, wire gauge, cable temperature rating, RoHS declaration, REACH/SVHC statement, SCIP status if applicable. | Avoids late failures in assembly, cable heating, and EU-market material compliance. |
Scenario Examples
Each scenario shows the practical boundary between a fast datasheet screen and the evidence required for release.
Premise: Buyer finds a 17HS4401-class listing with 40 N.cm and wants a drop-in motor.
Process: Copy current, resistance, inductance, cable, shaft, and body length; compare against the original driver current and connector.
Outcome: Accept only if the winding and harness match; otherwise request a curve and connector drawing before sample purchase.
Premise: A procurement team has a working NEMA 17 axis but supplier lead time is long.
Process: Screen substitute sheets by I/R/L and stack length, then verify holding torque and speed target in the checker.
Outcome: Shortlist only models with comparable electrical time constant and enough dynamic torque window.
Premise: Designer cares more about smooth low-speed motion than high RPM.
Process: Use the tool at low RPM, confirm 1.8 degree steps/rev, and check driver microstepping support separately.
Outcome: A moderate 17HS can be sufficient if thermal load is controlled and resonance is tested.
Premise: A robot joint uses a compact enclosure and continuous positioning duty.
Process: Raise ambient and duty cycle in the tool, then inspect thermal load and current utilization.
Outcome: If thermal load crosses the review line, derate current or select a longer stack/larger frame.
FAQ
Questions are grouped by the decisions users usually need to make after finding a 17HS datasheet.
Data Sources
Source quality is uneven for 17HS pages, so mirrors and marketplace rows are treated as screening evidence, not final procurement approval.
| ID | Source | Key data | Why it matters | Checked on | Link |
|---|---|---|---|---|---|
| S1 | SERP snapshot: "17hs stepper motor datasheet" | Top result patterns include model-specific PDFs, distributor pages, and data mirrors rather than a single canonical 17HS standard sheet. | Validates a hybrid page: users need an immediate sheet checker and a report explaining field interpretation and source risk. | 2026-06-06 | Open source |
| S2 | SY Motor 17HS4401N product data | Public 17HS4401N data lists 1.8 degree, 40 N.cm, 1.7 A, 2.55 V, and 2.8 mH inductance for a 42 x 42 x 40 mm class motor. | Provides a concrete 17HS example for the tool default and shows which datasheet fields must be copied exactly. | 2026-06-06 | Open source |
| S3 | HandsOnTec 17HS4401S PDF | Public PDF presents a 17HS4401S 1.7 A, 43 N.cm class 4-wire bipolar motor sheet. | Confirms that close model suffixes can publish slightly different torque labels, so suffix-level matching matters. | 2026-06-06 | Open source |
| S4 | Direnc 17HS series PDF mirror | Public 17HS series table includes model rows for length, current, resistance, inductance, holding torque, and lead-wire count. | Supports the comparison approach: one 17HS family spans multiple electrical and torque configurations. | 2026-06-06 | Open source |
| S5 | OYO Stepper 17HS4401 product data | Public listing shows a 17HS4401 variant at 45 N.cm, 1.68 A, 3.27 V, 1.95 ohm, and 4.4 mH. | Demonstrates that the same visible 17HS4401 label can differ by winding and supplier. | 2026-06-06 | Open source |
| S6 | Oriental Motor speed-torque curve reference | Holding torque is a standstill value at rated current; pull-out torque and speed-torque curves define running limits. | Prevents treating the 17HS datasheet holding torque as guaranteed high-speed torque. | 2026-06-06 | Open source |
| S7 | Texas Instruments DRV8825 Datasheet | DRV8825 lists an 8.2 V to 45 V operating supply range and 1.9 us minimum STEP high/low timing. | Adds driver timing and voltage boundaries when a 17HS sheet is used with DRV8825-class boards. | 2026-06-06 | Open source |
| S8 | Allegro A4988 Datasheet | A4988 lists an 8 V to 35 V motor supply range and 1 us minimum STEP high/low timing. | Separates A4988 assumptions from DRV8825/TMC-class assumptions in 17HS wiring guides. | 2026-06-06 | Open source |
| S9 | ADI TMC2209 Datasheet Rev. 1.09 | TMC2209-class drivers publish a different voltage range, RMS/peak current framing, and STEP timing than A4988/DRV8825 families. | Prevents copy-pasting 17HS current and timing settings between driver families. | 2026-06-06 | Open source |
| S10 | STEPPERONLINE NEMA 17 product family index | Public NEMA 17 catalog rows span different stack lengths, step angles, holding torque values, and current ratings within the same 42 mm frame class. | Supports the anti-duplication angle: this page is model-sheet interpretation, not a generic NEMA 17 selector. | 2026-06-06 | Open source |
| S11 | NEMA ICS 16-2001 official publication page | NEMA lists ICS 16-2001 as an active 185-page standard covering rotational electric servo and stepper motors, power requirements, feedback devices, and controls for motion/position systems. | Sets the standards boundary: NEMA frame context helps mounting compatibility, but it is not a substitute for a model-level 17HS electrical datasheet. | 2026-06-06 | Open source |
| S12 | ASPINA NEMA17 selection guide | Explains that NEMA17 is about a 1.7 inch / 42 mm square flange and that NEMA size does not define torque, current, or other performance values. | Provides a manufacturer-side boundary for rejecting frame-size-only substitutions. | 2026-06-06 | Open source |
| S13 | Pololu A4988 carrier current limiting documentation | Documents that full-step coil current is about 70% of the current limit and that higher motor supply voltage requires active current limiting. | Turns a 17HS rated-current field into a board-level VREF/current-setting risk instead of a blind copy from the motor sheet. | 2026-06-06 | Open source |
| S14 | European Commission RoHS Directive page | RoHS Directive 2011/65/EU governs restricted substances in electrical and electronic equipment placed on the EU market. | Clarifies that a bare 17HS datasheet row is not enough for EU-market compliance evidence. | 2026-06-06 | Open source |
| S15 | ECHA REACH Article 33 communication guidance | Suppliers of articles containing Candidate List substances above 0.1% w/w must provide safe-use information to recipients; ECHA also describes SCIP obligations for SVHCs above 0.1% w/w in EU-market articles. | Adds a concrete compliance-data request for motors, cable insulation, connectors, labels, and packaging used in regulated supply chains. | 2026-06-06 | Open source |
| S16 | STEPPERONLINE 17HS19-2004S1 product data | A public 17HS19-2004S1 row lists a 42 x 42 x 48 mm 4-wire NEMA 17 motor at 59 N.cm and 2 A, with a downloadable full datasheet. | Shows that longer-stack 17HS variants can sit well outside the 40 N.cm / 1.7 A defaults and should not be collapsed into one 17HS4401-class assumption. | 2026-06-06 | Open source |
Disclosure
This page is an engineering pre-screen and sourcing decision aid, not a guarantee of motor reliability, regulatory compliance, or safe operation. Validate every candidate on the exact mechanism, enclosure, driver, firmware, cable, and duty cycle.
Evidence register size: 16 sources · Published: 2026-06-06 · Last updated: 2026-06-06 · Review every 6 months or when 17HS supplier sheets, driver limits, or sourcing requirements change.
Canonical URL: https://nema17motor.com/best/17hs-stepper-motor-datasheet