SpinMetric: Air Turbo Balancer

Built for turbo rebuilders and balancing shops who get paid to be right. WHAT IT DOES BALANCING CARD JOURNAL Every repair as a searchable card. Find any job by vehicle VIN or cartridge serial number, and see at a glance which units are in spec and which still have defects open. POLAR IMBALANCE CHART Map residual rotor imbalance as a precise polar vector — angle and amplitude on a 360° target. Drag to set the after-position or type exact values, and compare before/after on the same chart. DRILLING CORRECTION CALCULATOR Enter the measured imbalance, heavy angle, rotor radius and drill diameter, pick the material (steel, stainless, Inconel, titanium), and get the exact mass of metal to remove — in milligrams — plus the drill depth at the heavy spot. CARTRIDGE PASSPORTS A reference of common cartridges (Garrett, BorgWarner, Mitsubishi, Holset and more) with residual imbalance tolerance in mg·mm and rotor mass, so you always balance to the right limit. DEFECT INSPECTION LOG A wear checklist for every job: shaft play (radial and axial in mm), wheel geometry, wastegate condition. Nothing skipped, everything recorded. VNT NOZZLE CALIBRATION Set and calibrate the variable-geometry actuator against vacuum test points — the vacuum-to-travel curve, logged. BEARING & REBUILD KIT REFERENCE Cross-references and sizes for thrust bearings and spacer sleeves, so you order the right parts the first time. BENCH TEST LOG Record high-RPM cartridge tests with an oil-leak trace, so a unit only ships when it's proven. TECHNICAL CONCLUSION EXPORT Build a clean PDF report with before/after polar charts — the document that backs your warranty and keeps the customer confident. BUILT FOR THE BENCH - Switchable imbalance units (mg·mm, g·mm, mg·cm) and correction mass units (mg, g) - Material density presets for accurate drilling math - Works fully offline — your shop data stays on device Stop balancing by feel. Measure it, correct it, prove it.