Gearbox Technical Engineer

该职位来源于猎聘 General duties/主要职责: Own the technical direction and end-to-end development of high-performance gearbox systems for electric material handling vehicles, from architecture and detailed design through validation, supplier industrialization, localization, and field improvement. Tasks in operating cycle/具体工作内容:

• Technical Leadership & Architecture -Act as the technical authority for drive and steering gearbox systems across new product development, localization, and continuous improvement programs. -Define gearbox architecture, gear stages, ratio strategy, torque path, bearing arrangement, lubrication concept, sealing concept, interfaces, and design margins. -Translate vehicle requirements and duty cycles into gearbox-level specifications, load cases, acceptance criteria, and verification plans. -Lead concept, design, calculation, drawing, and release reviews; challenge assumptions and document technical decisions and residual risks. -Create and maintain gearbox design guidelines, calculation templates, lessons learned, and technical standards.
• Gear, Shaft, Bearing & Housing Design Review -Lead macro- and micro-geometry definition for spur, helical, bevel, planetary, and ring gear applications as applicable. -Perform or review gear rating, contact stress, root bending stress, scuffing, micropitting, wear, backlash, transmission error, and tooth contact analyses. -Define tooth profile and lead modifications to improve load distribution, noise behavior, efficiency, and durability. -Lead shaft strength, stiffness, deflection, spline, key, bolted joint, and press-fit calculations. -Select and size bearings considering combined loads, life, stiffness, preload, lubrication, contamination, and thermal effects. -Design and review cast or machined housings for strength, bearing seat integrity, alignment, manufacturability, sealing, and serviceability. -Own GD&T strategy, datum systems, fits, tolerance stack-ups, bearing clearances, concentricity, runout, and assembly variation control.
• Materials, Heat Treatment & Manufacturing -Define material, cleanliness, forging, casting, machining, heat treatment, surface treatment, and finishing requirements for safety- and durability-critical components. -Provide expert guidance on carburizing and quenching, induction hardening, nitriding, normalizing, hard turning, gear hobbing, shaping, shaving, grinding, honing, and superfinishing. -Define gear quality, surface roughness, hardness, case depth, microstructure, residual stress, distortion, and inspection requirements. -Review process capability for critical characteristics and support design-for-manufacture and design-for-assembly improvements.
• System Calculation & Optimization -Develop vehicle-to-gearbox load spectra covering acceleration, regenerative braking, downhill travel, gradient holding, steering, shock events, curb or threshold crossing, and misuse conditions. -Perform or review analytical calculations and CAE for static strength, fatigue, contact mechanics, torsional behavior, thermal balance, efficiency, and structural deformation. -Assess the influence of motor speed and torque characteristics, transmission ratio, wheel diameter, vehicle mass, payload, gradeability, and braking requirements. -Optimize the design for performance, package, mass, NVH, efficiency, durability, manufacturability, cost, and sustainability. -Ensure calculation assumptions are traceable and correlated with test or field evidence.
• Validation, Testing & Failure Analysis -Define design verification plans covering performance, efficiency, no-load drag torque, backlash, noise and vibration, thermal behavior, leakage, endurance, impact, vibration, corrosion, and environmental robustness. -Specify component, subsystem, bench, and vehicle-level test methods, instrumentation, load profiles, inspection points, and acceptance criteria. -Lead test readiness reviews, monitor execution, assess deviations, and approve technical conclusions. -Conduct teardown inspections and evaluate gears, bearings, shafts, housings, seals, oil, wear debris, tooth contact patterns, and dimensional changes. -Lead structured root-cause analysis using evidence-based methods and drive corrective and preventive actions to closure. -Correlate simulation, bench-test, vehicle-test, supplier, and field data to improve design methods and validation coverage.
• Supplier Development, Localization & Cost -Lead technical supplier nomination, capability assessment, design review, APQP support, prototype maturity, and production readiness activities. -Evaluate supplier competence in gear calculation, detailed design, CAE, heat treatment, gear manufacturing, cleanliness, assembly, testing, and quality control. -Drive localization while protecting functional performance, reliability, and lifecycle cost. -Benchmark competitor and supplier solutions and convert findings into requirements, design improvements, and cost-down opportunities. -Support sourcing and quality teams with objective technical evaluations, risk assessments, and recovery plans.
• Product Release & Lifecycle Support -Ensure technical deliverables are complete and mature for design release, prototype build, design validation, process validation, and serial production. -Support drawing release, BOM maturity, change management, configuration control, and PLM documentation. -Provide expert support for manufacturing ramp-up, end-of-line issues, warranty concerns, and field failures. -Define containment, interim solutions, permanent corrective actions, and validation evidence for critical issues. -Balance immediate business needs with long-term design integrity and platform strategy. Profile of qualification/胜任资质要求: a)

Graduation /graduate degree/ major/学历/专业:

• Bachelor’s or Master’s degree in Mechanical Engineering, Vehicle Engineering, Power Transmission, Mechatronics, or a related discipline.
• Doctorate or recognized specialist training in gearing, tribology, fatigue, or drivetrain engineering is an advantage. b)

Working experience (in years)/工作经验（年限）:

• Typically 5+ years of relevant experience in gearbox, transmission, axle, drive unit, or e-drivetrain development, including substantial ownership of complex technical decisions.
• Demonstrated experience taking gearbox systems from concept through validation and serial production.
• Proven experience in supplier technical leadership, design reviews, test evaluation, and failure resolution.
• Experience in forklifts, warehouse trucks, construction machinery, agricultural machinery, commercial vehicles, automotive transmissions, or other off-highway applications is strongly preferred. c) Professional/专业能力:
• Gear engineering: Gear geometry, rating, accuracy, backlash, contact pattern, microgeometry, NVH, efficiency, wear, and failure modes.
• Mechanical systems: Shafts, splines, bearings, housings, fits, tolerances, bolted joints, seals, lubrication, and thermal behavior.
• Analysis: Load spectrum definition, strength and fatigue calculation, tolerance analysis, FEA interpretation, design margin, and test correlation.
• Manufacturing: Gear cutting and finishing, heat treatment, hard machining, casting, forging, metrology, process capability, and assembly.
• Validation: Bench and vehicle testing, instrumentation, endurance, environmental tests, teardown inspection, and root-cause analysis.
• Quality methods: DFMEA, DVP&R, design reviews, 8D, fault-tree thinking, change control, and risk-based decision-making.
• 3D CAD capability, SolidWorks or equivalent experience is also relevant.
• Gear and bearing calculation tools such as KISSsoft/KISSsys, Romax, MASTA, or equivalent.
• Finite element analysis tools such as ANSYS, Abaqus, Nastran, or equivalent.
• PLM and configuration-management experience, preferably Teamcenter.
• Proficiency in technical data analysis, engineering reports, and Microsoft Office applications. d) Personal/个性特质:
• Professional English communication skills for global technical collaboration; Chinese capability is highly desirable for local supplier development.
• Structured, evidence-based, and detail-oriented approach to engineering decisions.
• Ability to work independently on ambiguous technical problems while aligning stakeholders around clear decisions.
• Willingness to travel to suppliers, production plants, proving grounds, and test facilities as required.