Sinobakr Precision Cleaning – Professional Solutions for Gear Component Washing
With 26 years of expertise in industrial precision cleaning, Sinobakr provides three complete automated cleaning lines: vacuum hydrocarbon cleaning, modified alcohol cleaning and aqueous-based cleaning. Our solutions target automotive transmission gears, new energy reducer gears, humanoid robot harmonic/RV gears, aerospace precision gears and general transmission gears. They resolve critical production pain points including micro-residues in tooth roots/grooves and blind oil holes, tooth surface scratches, water stains, rust, and inconsistent cleanliness, fully complying with ISO 16232 automotive component standards and NAS precision assembly cleanliness specifications.
I. Core Cleaning Challenges for Machined Gears & Matching Solutions
1. Types of Contaminants
Cutting fluid, grinding liquid, polishing paste, quenching anti-rust oil, metallic fine particles, polishing wax, tiny burrs and chips, heat treatment carbon deposits, fingerprint grease.
2. Common Industry Difficulties
Trapped air bubbles in tooth grooves, roots and intersecting blind holes block thorough removal of micron particles, resulting in abnormal noise and premature wear after assembly.
Thin-walled harmonic flexsplines and high-precision gear surfaces are prone to cavitation scratches from conventional ultrasonic cleaning.
Water-based cleaning leaves residual moisture and watermarks, causing rapid rust on carbon steel gears and preventing direct assembly.
Manual cleaning yields inconsistent cleanliness and low efficiency, while traditional solvent cleaning fails environmental emission standards.
A single cleaning medium cannot fully remove stubborn quenching oil and oxide scale formed during heat treatment.
3. Standard Acceptance Criteria
No particles larger than 100 μm remaining on surfaces; residual oil content below 30 mg/㎡; zero watermarks or oxidation; fully dried with no liquid residue; ready for direct assembly without secondary treatment.
II. Three Mature Complete Gear Cleaning Systems (Selected by Precision & Production Capacity)
Solution A: Fully Automatic Vacuum Hydrocarbon Cleaning Machine
Top choice for high-precision gears; standard equipment for mass production of harmonic/RV gears and automotive transmission gears
Suitable Workpieces
Flexsplines, wave generators for humanoid robot reducers, new energy motor gears, aerospace precision gears, automatic transmission gears, high-precision planetary gears; meets NAS Class 8 cleanliness, ideal for export and cleanroom applications.
Standard Fully Vacuum Sealed Process (No Oxidation in Air)
Loading with gear-specific anti-collision tooling → Vacuum ultrasonic spray rough degreasing → High-frequency ultrasonic fine cleaning (28/40 kHz mild cavitation to protect tooth surfaces) → Multi-stage vacuum rinsing → Distillation and filtration solvent regeneration → High-temperature vacuum drying → Nitrogen-sealed unloading
Key Advantages
Dead-spot-free deep decontamination: Vacuum eliminates air bubbles in tooth gaps for full solvent penetration, stripping metallic powders as small as 1 μm.
Zero watermarks & anti-rust performance: Low-temperature vacuum drying removes all moisture; carbon steel gears retain temporary rust resistance post-cleaning.
Low operational cost & eco-friendly: Over 98% solvent recovery via automatic distillation; explosion-proof fully enclosed design with low VOC and zero wastewater discharge.
Custom anti-collision fixtures: Vertical layered gear pallets prevent stacking scratches on tooth flanks.
Flexible automated production lines: Compatible with robotic handlers, heat treatment furnaces and assembly lines for 24-hour unattended operation; cycle time per batch: 60–180 seconds.
Solution B: Modified Alcohol Vacuum Precision Cleaning Machine
Dedicated to gears after carburizing and quenching heat treatment
Suitable Workpieces
Carburized/quenched gears, heavy-duty construction machinery gears, large-module transmission shaft gears; effective against stubborn quenching oil and carbonized sludge.
Process Highlights
High flash-point modified alcohol delivers superior safety compared to regular hydrocarbons. Combined vapor immersion and ultrasonic cleaning rapidly dissolve high-temperature baked oil sludge. Vacuum drying leaves no ionic residues and preserves heat treatment oxide layers with short-term anti-rust protection.
Solution C: Fully Automatic Aqueous Ultrasonic Spray Cleaning Line
For mass pre-cleaning before heat treatment & mid-to-low precision mass production
Suitable Workpieces
Ordinary carbon steel transmission gears, stamped gears, pre-heat-treatment degreasing; neutral aqueous detergent compatible with steel and aluminum alloys.
Standard Process Flow
Loading → High-pressure spray pre-degreasing → Multi-tank ultrasonic rough & fine cleaning → Multi-stage overflow pure water rinsing → Hot air + air knife composite drying → Unloading
Application Scenarios
Prevent furnace carbon deposits by removing cutting oil before heat treatment; low-cost high-volume cleaning for general gears; for cleanliness requirements up to ISO 16232 Class 7.
Solution D: CNC High-Pressure Targeted Cleaning Machine
Specialized for deburring internal oil holes and intersecting bores on gears
Suitable Workpieces
Automotive transmission gears and new energy motor gear shafts with tiny intersecting oil holes. Up to 50 MPa directional high-pressure flushing thoroughly removes internal bore metal chips, paired with ultrasonic technology for simultaneous internal and external cleaning.
III. Sinobakr Exclusive Core Cleaning Technologies for Gears
Multi-frequency Mild Ultrasonic System28 kHz for heavy grease removal, 40 kHz for fine micro-particle stripping, 80 kHz ultra-high frequency for miniature harmonic gears with adjustable power to avoid cavitation damage to thin-walled precision teeth.
Multi-Stage Precision Filtration CirculationCoarse filtration + 10 μm fine filtration + activated carbon oil-water separation continuously purifies cleaning media to avoid secondary particle adhesion and extend detergent service life.
Full 316L Corrosion-Resistant CabinetResistant to hydrocarbons, modified alcohols and aqueous chemicals for long-term mass production; explosion-proof enclosed chambers with low volatile emissions to meet cleanroom and environmental regulations.
Intelligent PLC Recipe ManagementPreloaded dedicated cleaning programs for harmonic gears, transmission gears and heat-treated gears; one-click model switching with full traceability of all process parameters.
On-Site Cleanliness Testing Laboratory SupportCleanliness inspection services and formal test reports (particle size & residual oil weight) delivered with equipment to match OEM incoming inspection standards.
