Planetary Gearbox 24V Motor Fit Checker and Decision Report
Sourcing a 24 V DC planetary gear motor with gearbox? Enter rated motor and load data to screen ratio, torque margin, thermal loss, and estimated bus current. Use the result to identify supplier evidence still needed; this calculation does not certify a motor or gearbox.
Quick links: run the fit check · key conclusions · 24 V naming FAQ
Published: May 20, 2026 · Page reviewed: October 1, 2026. Evidence baseline refreshed May 20, 2026; selected official regulatory sources rechecked October 1, 2026.
Leave blank until you have a supplier-rated value; the result stays Conditional until gearbox capacity is checked.
Gearbox architecture
Shock level
Initial value follows selected gearbox type. Move slider for scenario analysis.
The 78% starting value is a modeling assumption for the shaft-to-bus path, not a product rating. Replace it with supplier data; startup, stall, and peak current are outside this estimate.
Core Conclusions And Key Numbers
Mid-layer summary: quick decision statements, key metrics, and explicit user-fit boundaries for 0.5 hp screening.
Summary preview tracks current valid inputs. Empty or invalid fields temporarily fall back to default values until the next run.
0.5 hp ≈ 0.373 kW. At 3000 rpm this tool estimates motor shaft torque around 1.19 Nm.
Use this as input baseline, then scale by ratio and efficiency.
Required ratio is 20.0:1, and required rated torque with service factor is 26.7 Nm.
Ratio outside preferred range moves decision to conditional/not-fit.
Estimated heat loss is 0.03 kW.
Continuous thermal validation is mandatory for compact or sealed installation.
- Teams comparing gearbox architecture for 0.5 hp 24 V DC projects.
- Projects needing a fast ratio/torque/thermal pre-screen before RFQ.
- Users with duty-cycle and shock assumptions available.
- Cases outside the quick-screen boundary ranges.
- Precision axes without quantified backlash/stiffness constraints.
- High duty thermal-limited systems lacking vendor derating curves.
Turn Screening Output Into RFQ Inputs
Export your chosen ratio window, service factor, and thermal estimate into supplier RFQ requirements. Include explicit validation items for continuous duty and backlash protocol.
Review planetary gearbox options and interfaces before comparing a supplier quote.
Use this when the gearbox type is not yet decided and you want to compare 24 V drivetrain options.
Review the trade-offs when a compact, high reduction ratio matters more than efficiency or backdrivability.
Use this page when you need to evaluate two-stage supplier fit, evidence quality, and RFQ risk clauses before hardware freeze.
Use this page when RFQ moves to wholesale batching, acceptance boundaries, and risk-controlled quote comparison.
Use this page when requests are 24 V but not explicitly planetary and you need a broader architecture screen.
Review packaging constraints and interface assumptions before hardware freeze.
Read practical notes on efficiency, risk, and maintenance.
Validate technical and execution fit before commitment.
Methodology And Evidence Layer
Deep layer for trust: formula path, source-backed increments, and explicit uncertainty handling.
| Step | Formula / Rule | Output |
|---|---|---|
| Power conversion | kWshaft = hp × 0.7456999 | Rated motor shaft output power in SI units |
| DC bus current estimate | Ibus = 1000 × Pshaft(kW) / (Vbus × ηmotor+controller) | Directional estimate using the editable combined motor/controller efficiency assumption |
| Motor torque | T = 9550 × P(kW) / n(rpm) | Motor shaft torque estimate |
| Required ratio | i = motor speed / target output speed | First-pass reduction target |
| Output torque estimate | Tout = Tmotor × i × η | Architecture-level torque screening |
| Required rated torque | Target torque × service factor | Minimum recommended gearbox rating |
| Thermal loss | P loss = Pshaft × (1 - ηgearbox) | Heat burden for enclosure planning |
| Decision gate | Ratio window + thermal threshold + torque margin | Fit / Conditional / Not Fit |
| Fact | Boundary / Counterexample | Sources | Updated |
|---|---|---|---|
| 0.5 hp corresponds to about 0.373 kW rated motor shaft output (0.5 × 0.7456999). | Power conversion is exact at the unit level, but delivered gearbox output still depends on motor, controller, and thermal limits. | 2026-10-01 | |
| Regulation (EU) 2019/1781 covers specified induction motors rated above 50 V through 1,000 V and 0.12-1,000 kW; its separate three-phase VSD scope starts above 100 V AC. | The motor scope also requires the defined sinusoidal AC induction-motor architecture; a 24 V DC gearmotor does not meet that description merely because its power is in range. | 2026-10-01 | |
| EU efficiency timetable is time-bound: IE3 applies from July 1, 2021 for many 0.75-1000 kW motors, while IE4 from July 1, 2023 targets 75-200 kW categories; 0.5 hp is outside that IE4 bracket. | A project labeled "0.5 hp" is not automatically high-efficiency compliant in every market or architecture. | 2026-10-01 | |
| Regulation 2019/1781 excludes motors fully integrated into products (including gears) when performance cannot be tested independently. | Integrated motor-gearbox units may need product-level compliance evidence instead of standalone motor IE assertions. | 2026-05-20 | |
| The regulation defines continuous duty for this context using duty types such as S1, S3 >= 80%, or S6 >= 80%. | If your real cycle has lower cyclic duration factor or high transient overloads, fast-screen outcomes become less reliable. | 2026-05-20 | |
| EU information requirements include rated efficiency at full/75%/50% load and speed-torque related disclosure points for drives. | Single-point brochure efficiency is not enough for cross-vendor comparison in variable-duty applications. | 2026-10-01 | |
| US federal definitions in 10 CFR 431.12 show core covered classes as induction-motor families (for example, general-purpose subtype I is single-speed induction on polyphase AC). | A 24 V DC product description does not automatically map to the same federal efficiency class assumptions. | 2026-10-01 | |
| OSHA 1910.95 sets enforceable noise thresholds, including Table G-16 limits (90 dBA for 8 hours, 95 dBA for 4 hours) and an 85 dBA action level for hearing-conservation programs. | Ignoring gearbox acoustic behavior can create compliance and PPE-program cost risks even when torque math passes. | 2026-10-01 | |
| ISO 6336 and AGMA rating methods remain factor-sensitive; using copied rating factors outside validated conditions can understate failure risk. | Material and macropitting/bending formulas still require project-specific duty, lubrication, and thermal validation. | 2026-05-20 | |
| The Low Voltage Directive scope threshold is 50-1000 VAC and 75-1500 VDC, so a 24 VDC gearmotor is below LVD scope by voltage. | Below-LVD does not mean zero obligations; teams still need to map GPSR, EMC, and machinery routes by final product type. | 2026-10-01 | |
| Regulation (EU) 2023/1230 on machinery applies mandatorily from January 20, 2027, replacing the Machinery Directive route for new placements on the EU market. | Projects shipping near or after 2027 need conformity files aligned to the regulation timeline, not legacy-only assumptions. | 2026-10-01 | |
| The Commission reports around 380 million electric motors in EU use, representing about 53% of EU27 electricity consumption; annual savings from regulations are reported at about 52 TWh in 2020 and projected to reach 107 TWh by 2030. | These are macro-level policy figures; they justify efficiency diligence but do not replace project-specific duty-cycle metering. | 2026-10-01 | |
| NIOSH recommends an 85 dBA, 8-hour REL with a 3 dB exchange rate, while OSHA thresholds are legal minimums with a different trigger structure. | If your customer EHS program adopts NIOSH-style limits, a design can be legally acceptable yet still fail internal deployment criteria. | 2026-10-01 | |
| EU worker-noise Directive 2003/10/EC uses lower action value 80 dB(A), upper action value 85 dB(A), and limit value 87 dB(A), creating stricter deployment expectations in some EU workplaces. | Noise acceptability must be mapped to deployment jurisdiction; one global dBA claim is insufficient for multi-region rollout. | 2026-05-20 |
| Gate | Official boundary | Decision impact | Minimum action | Sources | Updated |
|---|---|---|---|---|---|
| EU scope classification before quoting IE level | Article 2 defines the motor scope as specified 50/60 Hz induction motors rated above 50 V through 1,000 V and 0.12-1,000 kW; the separate three-phase VSD scope starts above 100 V AC. | Wrong scope assumption can produce invalid cross-supplier efficiency comparisons. | Ask supplier to declare whether the offered unit is in-scope under Article 2 and Annex I, with clause references. | 2026-10-01 | |
| Integrated motor-gearbox testability | Article 2 excludes motors completely integrated into a product when energy performance cannot be tested independently. | Standalone motor IE claims may not be legally comparable for fully integrated gearmotor constructions. | Request independent testability statement and test method before accepting efficiency claims. | 2026-10-01 | |
| Low-voltage boundary for 24 VDC products | LVD scope is 50-1000 VAC and 75-1500 VDC, so 24 VDC assemblies sit below the directive voltage threshold. | Below-LVD products can still have compliance obligations through other routes (EMC, GPSR, machinery). | Document which non-LVD route is applicable for the final product and include required evidence in RFQ. | 2026-10-01 | |
| EU machinery transition timeline check | Regulation (EU) 2023/1230 applies from 2027-01-20, replacing the Machinery Directive route for new placements on the EU market. | Programs launching near 2027 can fail conformity planning if they keep legacy-only document structures. | Declare planned market-entry date and lock the conformity route early in the supplier technical file. | 2026-10-01 | |
| U.S. federal motor-definition alignment | 10 CFR 431.12 general-purpose subtype I is defined as single-speed induction motor on polyphase AC. | 24 V DC product naming can diverge from federal covered-motor classes. | Document whether U.S. efficiency claims reference a covered class or an alternative pathway. | 2026-10-01 | |
| Acoustic compliance threshold by deployment region | OSHA 1910.95 and EU Directive 2003/10/EC define explicit noise exposure/action values, while NIOSH uses a stricter REL interpretation model. | A gearbox choice can pass one threshold set but still fail customer EHS rules in another region. | Include measured duty-condition dBA plus the exact threshold framework used in each target market. | 2026-05-20 |
| Requirement | Applies when | Not automatic when | Minimum action | Sources | Updated |
|---|---|---|---|---|---|
| EU Ecodesign 2019/1781 (motors/VSD) | Motor architecture matches scope definitions (including induction-motor conditions and stated voltage/power boundaries). | 24 V DC naming is used without confirming legal scope clauses and testability conditions. | Attach clause-level scope statement in RFQ response before using IE-level comparisons. | 2026-10-01 | |
| EU Low Voltage Directive 2014/35/EU | Equipment voltage rating is within 50-1000 VAC or 75-1500 VDC. | 24 VDC gearmotor assemblies are below this voltage threshold. | Do not mark "LVD compliant" by default for 24 VDC; map other applicable routes explicitly. | 2026-10-01 | |
| EU EMC Directive 2014/30/EU | Product includes electronics/electrics where electromagnetic disturbance and immunity obligations are relevant. | A team assumes low DC bus voltage removes EMC evidence obligations. | Request EMC test-plan disclosure and harmonised-standard references in supplier package. | 2026-10-01 | |
| EU Machinery Regulation 2023/1230 timeline | Products are placed on the EU market on or after 2027-01-20 under the new machinery route. | Legacy-directive documentation is reused without transition planning. | Lock conformity documentation route by market-entry date before design freeze. | 2026-10-01 | |
| EU GPSR 2023/988 for consumer products | Consumer products are placed on the market from 2024-12-13 onward. | Teams conclude "below-LVD means no product-safety pathway". | For consumer-facing 24 VDC products, include GPSR evidence in market-access checklist. | 2026-10-01 |
| ID | Source | Published | Usage In Page | Confidence |
|---|---|---|---|---|
| S1 | NIST Special Publication 1038: The International System of Units (SI) — Conversion Factors NIST | 2006 Verified 2026-04-27 | Uses 1 mechanical horsepower = 745.6999 W to convert rated motor shaft output from hp to kW. | High |
| S2 | IEC 60034-1:2026 Rotating electrical machines — Part 1: Rating and performance IEC | 2026-03-13 Verified 2026-04-27 | Anchors motor rating/performance vocabulary and duty interpretation for 24 V DC motor screening. | High |
| S3 | ISO 6336-1:2019 Calculation of load capacity of spur and helical gears — Part 1 ISO | 2019 Verified 2026-04-27 | Provides scope boundaries for cylindrical spur/helical gear rating and non-applicable conditions. | High |
| S4 | ISO 6336-5:2016 Strength and quality of materials ISO | 2016 Verified 2026-04-27 | States that material values are applicable for ISO 10300 bevel gear load-capacity calculations. | High |
| S5 | ANSI/AGMA 2101-E25 Fundamental Rating Factors and Calculation Methods MPMA / AGMA | 2025 Verified 2026-04-27 | Defines macropitting and bending-strength rating method for spur/helical involute gear pairs. | High |
| S6 | ANSI/AGMA 6034-C21 Enclosed Cylindrical Wormgear Speed Reducers and Gearmotors MPMA / AGMA | 2021-04-09 Verified 2026-04-27 | Contains power/torque/efficiency equations and guidance on thermal capacity, service factors, lubrication and self-locking. | High |
| S7 | Consolidated Regulation (EU) 2019/1781 (EN, 24.01.2023) — Ecodesign for motors and variable speed drives EUR-Lex | 2019-10-01 (consolidated 2023-01-24) Verified 2026-10-01 | Used for the >50 V to 1,000 V rated-voltage motor scope, the separate >100 V AC three-phase VSD scope, integration exclusions, duty definition, and IE timetable. | High |
| S8 | Electric Motors Product Page European Commission | Impact accounting page (2024 dataset context) Verified 2026-10-01 | Provides official summary numbers (EU stock, electricity use, savings) and implementation milestones for 2019/1781 including 2024 updates. | High |
| S9 | 10 CFR 431.12 Definitions (Subpart B — Electric Motors) eCFR / U.S. Department of Energy | eCFR current text Verified 2026-10-01 | Defines U.S. regulatory motor classes; general-purpose subtype I is explicitly single-speed induction motor on polyphase AC. | High |
| S10 | 29 CFR 1910.95 Occupational noise exposure OSHA / U.S. Department of Labor | Current OSHA standard page Verified 2026-10-01 | Provides Table G-16 (e.g., 90 dBA at 8 h, 95 dBA at 4 h) and 85 dBA action-level rules for hearing conservation programs. | High |
| S11 | Low Voltage Directive (LVD) overview and voltage scope boundaries European Commission | LVD 2014/35/EU (applicable from 2016-04-20) Verified 2026-10-01 | Anchors the 50-1000 VAC / 75-1500 VDC scope boundary and clarifies that 24 VDC is below LVD scope. | High |
| S12 | EMC Directive harmonised standards page European Commission | Directive 2014/30/EU framework Verified 2026-10-01 | Used to keep EMC obligations visible when teams incorrectly assume low voltage alone removes CE-path requirements. | High |
| S13 | Machinery safety requirements in the EU market European Commission | Regulation (EU) 2023/1230 mandatory application from 2027-01-20 Verified 2026-10-01 | Provides migration timing from Machinery Directive 2006/42/EC to Regulation (EU) 2023/1230 with corrigendum note. | High |
| S14 | General Product Safety Regulation (GPSR) standards entry point European Commission | Regulation (EU) 2023/988 applicable from 2024-12-13 Verified 2026-10-01 | Used to mark below-LVD consumer-product pathways instead of incorrectly declaring zero compliance duties. | High |
| S15 | NIOSH Workplace Noise Exposure basics CDC / NIOSH | NIOSH REL guidance page Verified 2026-10-01 | Adds conservative risk boundary: 85 dBA REL at 8 h with a 3 dB exchange rate. | High |
| S16 | Directive 2003/10/EC — worker noise exposure minimum requirements EUR-Lex | 2003-02-06 Verified 2026-05-20 | Adds EU worker-noise boundary values (80/85/87 dB(A)) for cross-region deployment decisions. | High |
| Topic | Status | Decision Impact | Minimum Executable Path |
|---|---|---|---|
| Cross-vendor continuous thermal derating curves for 0.5 hp 24 V DC + gearbox assemblies under the same enclosure condition | No harmonized public benchmark dataset was identified as of 2026-05-20. | Same nominal ratio can show very different steady-state temperature rise in real projects. | Request continuous duty torque-vs-temperature curves for your exact mounting and ambient condition. |
| Normalized backlash-under-load dataset across planetary/helical/worm options | Public data is mostly catalog-level and not measured with unified protocol. | Positioning quality risk remains hidden if RFQ only compares nominal backlash text. | Ask for test method, preload condition, and hot-state backlash values in supplier quote package. |
| Publicly harmonized efficiency benchmark for complete 24 V DC motor + gearbox assemblies across vendors | No regulator-grade open dataset was identified as of 2026-05-20 that normalizes motor, drive, and gearbox losses under one shared protocol. | Cross-vendor claims may look equivalent while using different load points, duty assumptions, or test rigs. | Require each quote to provide full/75%/50% load points, duty type, and test method before commercial comparison. |
| Open reliability dataset linking lubrication interval to field failure for mid-power 24 V DC gearmotors | No reproducible public dataset with matched duty-cycle metadata was identified as of 2026-05-20. | Lifecycle cost and downtime predictions can be overly optimistic. | Create an internal maintenance evidence table from pilot-line records before volume ramp. |
| Public cross-jurisdiction matrix mapping 24 V DC gearmotor compliance pathways by end-product type | No single regulator-maintained matrix was identified that unifies LVD, EMC, machinery, and worker-noise duties into one decision table. | Teams can under-scope compliance work when projects cross EU/US deployment contexts. | Maintain an internal applicability matrix per target market and lock it before RFQ award. |
Alternatives And Trade-Offs
| Option | Typical ratio window (screening) | Efficiency view | Best-fit scenario | Primary risk | Refs |
|---|---|---|---|---|---|
| Planetary gearbox | 3:1 to 40:1 preferred | No harmonized public cross-vendor benchmark for complete 0.5 hp assemblies; efficiency claims remain model-specific. | Compact high-torque-density packaging with positioning sensitivity. | Overgeneralizing catalog efficiency/backlash data without matched load-point test context. | S7, S8 + open gap |
| Helical inline gearbox | 4:1 to 60:1 preferred | Often chosen for efficient transmission, but motor IE class does not represent full geared-system efficiency. | Continuous duty where energy loss and heat must stay controlled. | Treating motor-only efficiency class as proof of gearbox-side thermal behavior. | S3, S5, S7 |
| Worm gearbox | 8:1 to 80:1 preferred | Sliding-contact architecture can carry larger loss penalties; performance is highly ratio and lubrication dependent. | Cost-sensitive packages where lower efficiency is acceptable and thermal budget is known. | Thermal saturation and acoustic exposure risk under long duty or high load. | S6, S10 |
| Direct drive (no gearbox) | 1:1 only | N/A (no gearbox losses) | High-speed low-torque tasks with tight efficiency requirements. | Insufficient output torque at low speed for many 0.5 hp use cases. | Model assumption |
| Integrated motor + gearbox package | Architecture-specific | Not always testable as standalone motor under regulatory scope definitions. | Programs prioritizing packaging simplicity and faster integration. | Regulatory misclassification and non-reproducible efficiency comparisons. | S7, S9 |
Most project failures come from missing thermal and validation evidence, not from ratio math itself.
| Architecture | Assumed efficiency | Thermal loss (kW) | Annual heat-loss energy (kWh) at 12 h/day | Annual reference cost (USD) at $0.12/kWh | Boundary note |
|---|---|---|---|---|---|
| Planetary | 92% | 0.030 | 131 | 16 | 33% higher thermal loss than best-case row. |
| Helical inline | 94% | 0.022 | 98 | 12 | Lowest modeled thermal burden in this quick comparison. |
| Worm | 68% | 0.119 | 523 | 63 | 433% higher thermal loss than best-case row. |
Known limitation: no harmonized public benchmark currently normalizes full 24 VDC motor+gearbox efficiency across vendors under a shared protocol.
Risk Warnings And Mitigation
Review priorities are qualitative screening prompts, not measured field-failure probabilities.
| Risk Type | Impact | Review priority | Trigger / Boundary | Mitigation | Refs |
|---|---|---|---|---|---|
| Thermal overload in continuous duty | High | Medium-high | Heat loss is not budgeted against enclosure cooling limits. | Require continuous duty thermal curve and ambient correction factors. | S2, S6, S7 |
| Undersized service factor | High | Medium | Shock and duty assumptions are lower than real field profile. | Recalculate with measured duty cycle and conservative shock class. | S5, S6 |
| Backlash mismatch for precision tasks | Medium-high | Medium | Quote package lacks test protocol and hot-state backlash metric. | Define acceptance criteria and measurement method in RFQ. | S3, S5 + open gap |
| Efficiency assumption copied across architectures | Medium-high | Medium | Single efficiency number reused despite gearbox type/ratio changes. | Run scenario table with architecture-specific ranges and supplier confirmation. | S7, S8 |
| Regulatory scope mismatch (EU/US) | High | Medium | IE or legal statements are copied without checking induction scope, low-voltage boundaries, and integration/testability exclusions. | Require explicit scope declaration (EU Article 2 / 10 CFR 431.12 class mapping / LVD threshold note) in supplier package. | S7, S9, S11–S14 |
| Machinery-route timing mismatch | High | Medium | Product launch date is close to 2027, but conformity package remains structured for legacy-only route. | Freeze conformity route by market-entry date and validate supplier technical file against Regulation 2023/1230 timeline. | S13 |
| Acoustic compliance miss | Medium-high | Medium | No measured duty-condition dBA report while selecting architecture. | Request noise test report and compare against OSHA legal thresholds plus customer EHS criteria (for example NIOSH REL / EU worker-noise action values). | S10, S15, S16 |
Illustrative Use Cases
These are engineering illustrations, not customer projects or measured hardware tests. The first row reflects the current tool inputs; the others describe conditions to verify with suppliers.
Assumption: 0.5 hp rated shaft power at 24 VDC and 3000 rpm; target 150 rpm output, moderate shock, 12 h/day.
Process: Tool converts power, estimates motor torque, applies ratio and efficiency, then checks margin against required torque.
Outcome: Estimated output torque 21.8 Nm, required rated torque 26.7 Nm.
Action: Do not freeze BOM before supplier validation run.
Assumption: Long duty cycle, moderate-to-heavy shock, compact enclosure.
Process: Same nominal torque can pass initial ratio sizing but fail heat dissipation in real ambient conditions.
Outcome: Thermal limits become dominant constraint before nominal torque limit in many compact systems.
Action: Prioritize continuous thermal curves and maintenance plan over nameplate-only selection.
Assumption: Lower shock but strict repeatability and low backlash requirement.
Process: Torque can be sufficient while accuracy fails if backlash and torsional stiffness are not validated under load.
Outcome: Catalog-level low-backlash labels are insufficient for acceptance criteria.
Action: Specify backlash test condition and hot-state tolerance in RFQ.
Assumption: Lower upfront cost option considered against planetary baseline.
Process: Compare efficiency penalty, cooling burden, and lifecycle implications beyond initial purchase price.
Outcome: Lower-capex architecture may increase lifecycle energy and thermal management costs.
Action: Run total-cost check including efficiency and maintenance before final decision.
Procurement Checklist
| Item | Must Have | If Missing |
|---|---|---|
| Continuous torque/temperature curve | Curve by speed, ambient, and mounting condition | Thermal risk cannot be priced accurately |
| Backlash acceptance protocol | Numeric class + measurement method + test state | Positioning quality may fail in commissioning |
| Lubrication and maintenance specification | Oil grade, interval, and trigger conditions | Lifecycle reliability becomes uncertain |
| Duty-cycle evidence | Measured cycle profile with shock events | Service factor may be under-sized |
| Efficiency test context | Full/75%/50% load points + speed/temperature + test method | Cross-vendor efficiency comparison is not reproducible |
| Regulatory scope declaration | Supplier statement on EU 2019/1781 / US 10 CFR class applicability, LVD threshold position, and exclusions | Legal-efficiency claims may be non-comparable or invalid |
| Conformity route timeline | Planned market-entry date and conformity path (including 2027 EU machinery-route migration when applicable) | CE documentation can fail at launch timing gate |
| EMC evidence package | EMC test scope, standards list, and pass/fail summary for the offered assembly | Integration-stage interference risk is discovered too late |
| Duty-condition acoustic report | dBA measurement at operating load with test setup details | Multi-region or customer EHS threshold mismatch remains hidden |
Sources And Update Log
Core conclusions are traceable to listed sources. Last evidence refresh: May 20, 2026.
Planned review cadence: every 6 months or when key standards and supplier data updates are published.
NIST · Uses 1 mechanical horsepower = 745.6999 W to convert rated motor shaft output from hp to kW.
IEC · Anchors motor rating/performance vocabulary and duty interpretation for 24 V DC motor screening.
ISO · Provides scope boundaries for cylindrical spur/helical gear rating and non-applicable conditions.
ISO · States that material values are applicable for ISO 10300 bevel gear load-capacity calculations.
MPMA / AGMA · Defines macropitting and bending-strength rating method for spur/helical involute gear pairs.
MPMA / AGMA · Contains power/torque/efficiency equations and guidance on thermal capacity, service factors, lubrication and self-locking.
EUR-Lex · Used for the >50 V to 1,000 V rated-voltage motor scope, the separate >100 V AC three-phase VSD scope, integration exclusions, duty definition, and IE timetable.
European Commission · Provides official summary numbers (EU stock, electricity use, savings) and implementation milestones for 2019/1781 including 2024 updates.
eCFR / U.S. Department of Energy · Defines U.S. regulatory motor classes; general-purpose subtype I is explicitly single-speed induction motor on polyphase AC.
OSHA / U.S. Department of Labor · Provides Table G-16 (e.g., 90 dBA at 8 h, 95 dBA at 4 h) and 85 dBA action-level rules for hearing conservation programs.
European Commission · Anchors the 50-1000 VAC / 75-1500 VDC scope boundary and clarifies that 24 VDC is below LVD scope.
European Commission · Used to keep EMC obligations visible when teams incorrectly assume low voltage alone removes CE-path requirements.
European Commission · Provides migration timing from Machinery Directive 2006/42/EC to Regulation (EU) 2023/1230 with corrigendum note.
European Commission · Used to mark below-LVD consumer-product pathways instead of incorrectly declaring zero compliance duties.
CDC / NIOSH · Adds conservative risk boundary: 85 dBA REL at 8 h with a 3 dB exchange rate.
EUR-Lex · Adds EU worker-noise boundary values (80/85/87 dB(A)) for cross-region deployment decisions.
FAQ
These answers explain the 24 V planetary gearmotor wording, tool limits, and supplier checks to include in an RFQ.
Move From Screening To Verified Selection
Use this page to decide architecture direction fast, then close risk with supplier thermal/backlash evidence before PO.