Calculate output torque, speed, heat loss, and supplier RFQ evidence for a 60:1 small gearbox before comparing planetary, worm, spur, and strain-wave manufacturers.
60:1 Architecture Split
screening viewThe main keyword is manufacturer selection, but the buying decision is technical: the same 60:1 output can be efficient, hot, cheap, precise, or self-holding depending on architecture. This report turns the tool result into a shortlist method, evidence checklist, and risk review.
| Architecture | Best Fit | Ratio Path | Efficiency View | Evidence To Ask | Refs |
|---|---|---|---|---|---|
| Two-stage planetary | Best default for AMR traction and compact servo reducers | Often built as two stages; exact 60:1 may be catalog or custom depending on series | Use 94% screening default; verify exact catalog point | Continuous output torque, radial load, backlash, efficiency at load point, lubricant, bearing life | S1, S2 |
| Single-stage worm | Best when right-angle packaging or static hold dominates | 60:1 is mechanically natural for worm drives | Use 45% screening default until the supplier proves thermal rating | Reducer thermal limit, permissible input speed, self-locking statement, housing temperature, brake requirement | S4, S5, S6 |
| Multi-stage spur | Best for low-cost inline shafts where backlash is acceptable | Several gear meshes; stage split matters more than headline ratio | Use 85% screening default for compact multi-stage assemblies | Stage split, material, lubrication, noise, output backlash, overload factor | S2 |
| Strain wave | Best for zero-backlash positioning and compact robotics joints | 60:1 sits inside common strain-wave ratio bands | Use 85% screening default, then verify series, lubricant, temperature, and duty | Rated torque, repeated peak torque, torsional stiffness, lost motion, life under cycle | S3 |
Quote Evidence Stack
Use the calculator output, architecture row, and minimum evidence list as the first manufacturer screening packet.
Send RFQ InputsUse this shortlist only after the calculator output is inside the screening range. The purpose is to decide who to ask for evidence, not to declare a universal best manufacturer.
| Manufacturer Class | Best For | Why It Fits | Commercial Risk | Minimum Evidence |
|---|---|---|---|---|
| Neugart / Wittenstein / Apex Dynamics | Precision planetary reducers for servo and AMR duty | Strong first shortlist when efficiency, coaxial packaging, and backlash are balanced requirements. | Nearest catalog ratio may differ from exact 60:1; validate stage combination and output bearing load. | Catalog drawing, hot backlash, torque derating, radial load, lead time |
| Harmonic Drive / Nabtesco class | Zero-backlash and high reduction in compact robotic joints | Good match when positioning accuracy is worth cost and shock-duty validation. | Do not compare only ratio and torque; stiffness, repeated peak torque, and life usually decide fit. | Life calculation, torsional stiffness, lost motion, shock limit, duty profile |
| Motovario / SEW-EURODRIVE class | Worm, helical-worm, and industrial geared-motor packages | Useful when right-angle packaging, static hold, or industrial service support matters. | Thermal loss can dominate lifecycle cost and may require a brake or larger housing. | Thermal rating, duty factor, efficiency table, brake recommendation |
| AMR Gearbox custom shortlist | Application-specific 60:1 reducers for mobile robot packaging | Appropriate when the reducer, motor, wheel load, encoder, and mounting envelope need one RFQ package. | Custom work still needs prototype test conditions and acceptance criteria before production lock. | Interface drawing, wheel load case, sample inspection, noise and thermal test plan |
| Item | Why It Matters | Minimum Ask |
|---|---|---|
| Duty cycle | Continuous 24/7 AMR use and intermittent lift use can select opposite architectures at the same ratio. | Percent on-time, peak duration, ambient temperature, cooling path |
| Torque definition | Rated, peak, acceleration, holding, and emergency loads are not interchangeable. | Continuous output torque, peak output torque, service factor, shock load case |
| Backlash and stiffness | Positioning quality depends on hot-state backlash and torsional stiffness, not only cold catalog values. | Backlash, lost motion, torsional stiffness, test temperature |
| Thermal proof | At 60:1, worm reducers can pass torque while failing heat rejection. | Thermal rating, efficiency at load, surface temperature limit |
| Mechanical interface | Small gearboxes often fail selection because output bearing loads are ignored. | Radial load, moment load, mounting pattern, shaft geometry, seal class |
Choosing worm drive for an AMR traction axis
HighSignal: Battery range falls or gearbox housing runs hot in continuous test
Mitigation: Use planetary first unless right-angle layout or static hold is a hard requirement.
Using zero backlash as the only strain-wave criterion
HighSignal: Motion accuracy looks good at bench load but life or shock margin is unclear
Mitigation: Require repeated peak torque, torsional stiffness, shock, and life calculation.
Ignoring radial load for direct wheel mounting
HighSignal: Reducer output bearing becomes the wheel bearing without a verified offset load case
Mitigation: Ask for bearing life at the real wheel radius, mass, shock, and floor impact.
Comparing supplier efficiency claims at different load points
MediumSignal: Catalogs cite different ratio, lubricant, temperature, or measurement scope
Mitigation: Normalize by exact ratio, speed, torque, temperature, and duty before ranking.
Worm gearbox trade-offs
Use when right-angle hold or worm efficiency is the core decision.
DC motor with gearbox sizing
Use when motor voltage, torque, and ratio need a broader screen.
24V AMR gearbox selection
Use when mobile robot battery and wheel-load constraints dominate.
Brushless gearbox architecture
Use when BLDC speed and compact gearbox choice are linked.
Send the calculated output speed, torque, thermal-loss screen, and evidence checklist before comparing supplier price or lead time.
S1: WPLN precision right angle gearbox technical data
Neugart. Last checked 2026-07-29.
Planetary shortlist evidence for ratio, backlash, torque, and efficiency fields.
SourceS2: Planetary gearbox stages and ratio range
Neugart Wiki. Last checked 2026-07-29.
Supports the need to treat high ratios as staged planetary systems.
SourceS3: CSG-2A component set product data
Harmonic Drive. Last checked 2026-07-29.
Strain-wave evidence for zero-backlash positioning and common ratio bands.
SourceS4: Worm gearing engineering information
Boston Gear. Last checked 2026-07-29.
Worm-drive evidence for sliding-contact efficiency and lead-angle dependence.
SourceS5: 700 series worm gear speed reducers service manual
Boston Gear. Last checked 2026-07-29.
Safety boundary source for not treating worm reducers as fail-safe brakes.
SourceS6: VSF worm geared motors technical catalogue
Motovario. Last checked 2026-07-29.
Supplier catalogue source for worm reducer RFQ fields and thermal/ratio review.
SourceFormula: output speed = input speed / 60. Input torque = mechanical input power / angular velocity. Output torque = input torque * 60 * screening efficiency. Thermal loss = input power * (1 - screening efficiency). Supplier model data, lubricant, duty cycle, temperature, and bearing load can change final acceptance.
