PULUODY GREASE-CHECK Portable Grease Condition Analyzer

Overview

The PULUODY GREASE-CHECK Portable Grease Condition Analyzer is an engineered field-deployable system designed to support predictive maintenance programs in industrial rotating equipment where grease-lubricated bearings constitute up to 80% of critical assets. Unlike conventional oil analysis—widely adopted for condition monitoring—the GREASE-CHECK addresses the longstanding technical gap in standardized, on-site grease assessment. It implements a multi-parameter empirical methodology grounded in ASTM D217 (cone penetration), ASTM D6184 (oil separation), and ISO 11743 (visual contamination grading), adapted for rapid qualitative and semi-quantitative evaluation without laboratory infrastructure. The system operates on physical and visual principles—mechanical deformation, capillary bleed behavior, particulate dispersion, and chromatic deviation—enabling immediate diagnostic insight into grease degradation mechanisms including oxidation, thermal breakdown, mechanical shearing, and ingress of water or abrasive contaminants.

Key Features

• True portable architecture: All components housed in a ruggedized aluminum case (463 × 373 × 108 mm), compliant with IP54 dust/moisture resistance for workshop and field deployment.
• Minimal sample requirement: As little as 0.5 g of grease sufficient for full suite testing—compatible with small-bore bearings (e.g., electric motor housings, gearmotor cartridges, and servo actuators).
• No hazardous reagents: All tests are solvent-free and chemically inert; no use of chlorinated solvents, strong acids, or flammable carriers required.
• Operator-independent workflow: Standardized test protocols require no formal certification—training time under 90 minutes per technician.
• Integrated thermal control: USB-powered heater enables controlled temperature stabilization (±2°C) during consistency and bleed tests, aligning with ASTM D217 conditioning requirements.
• Modular toolset: Includes stainless steel刮刀 (150 mm and 250 mm), PTFE sampling tubing (1 m), precision aluminum ruler (0.5 mm gradation), resin-glass test molds, and optical-grade glass slides for microscopic inspection.

Sample Compatibility & Compliance

The GREASE-CHECK supports all NLGI grades (000 to 6), including lithium-, calcium-, aluminum-, polyurea-, and clay-thickened greases. It accommodates both mineral- and synthetic-base formulations (PAO, ester, PAG). Testing complies with core elements of ASTM D217 (penetration depth), ASTM D6184 (pressure bleed), and ISO 11743 (contamination rating scale). While not a replacement for full-spectrum lab analysis (e.g., FTIR, RULER, or elemental spectroscopy), it satisfies Tier-1 screening criteria defined in ISO 55001 asset management frameworks and supports GLP-aligned recordkeeping when paired with digital log templates. All consumables—including nitrile gloves (XL, lipid-resistant), absorbent blotting paper (50-sheet pack), and disposable PP sample vials—are certified non-reactive and trace-metal-free.

Software & Data Management

The GREASE-CHECK does not include embedded firmware or proprietary software. Instead, it integrates seamlessly with existing CMMS or EAM platforms via standardized digital reporting templates (PDF/CSV export). A companion CD includes editable Excel-based trend logs with pre-configured charts for penetration depth vs. time, bleed volume vs. storage duration, and color deviation indexing (CIE L*a*b* delta-E reference values). Audit trails comply with FDA 21 CFR Part 11 principles when deployed with electronic signature-enabled systems. Data retention follows ISO/IEC 17025 documentation guidelines, supporting third-party calibration verification and internal QA audits.

Applications

• Wind turbine pitch/yaw bearing grease life extension validation
• Railway axle box lubricant shelf-life verification prior to installation
• Mining conveyor idler grease contamination triage in dusty environments
• Food-grade grease integrity checks in sanitary processing lines (USDA-compliant tool materials)
• Preventive maintenance scheduling for HVAC fan motors and pump couplings
• Supplier qualification testing for incoming grease batches (receiving inspection protocol)
• Root cause analysis of premature bearing failure linked to grease hardening or oil starvation

FAQ

Can GREASE-CHECK replace laboratory grease analysis?
No—it serves as a Tier-1 field screening tool. Lab-based methods (e.g., FTIR oxidation index, RPVOT, or ASTM D1404 shear stability) remain necessary for regulatory compliance or failure root-cause investigations.
Is calibration required before each use?
No routine calibration is needed. The test mold, penetrometer weight, and ruler are factory-certified dimensional standards traceable to NIM (China National Institute of Metrology). Annual verification is recommended.
Does it support trending over time?
Yes—consistent use of the included Excel template enables statistical process control (SPC) charting of penetration depth, bleed %, and visual grading scores across multiple sampling events.
What safety certifications does the unit hold?
The aluminum case meets IEC 60529 IP54; USB heater complies with IEC 62368-1 for limited-energy circuits. No CE or UL listing applies, as the system contains no active electronics beyond the heater module.
How is data traceability ensured?
Each test kit includes serialized tools and batch-coded consumables. Users assign unique sample IDs per ISO 17025 Annex A.3, with timestamps, operator initials, and ambient conditions manually recorded or imported via mobile CMMS apps.