SZ: 300553.SZ • CHINEXT LISTED • CNAS Accredited Calibration Lab • CE Certified Machinery • Drafter of National Standard JB/T 12679-2016
Home / Technology & R&D
CNAS ACCREDITED METROLOGY • NATIONAL STANDARD DRAFTER

Underlying Physics & Proprietary Algorithm Moat

Holding 38 invention patents and drafter of National Standard JB/T 12679-2016, JIZHI engineers proprietary digital filtering and vibration algorithms to rival German standards.

Industry Standard Benchmark

Lead Drafter of National Industry Standard JB/T 12679-2016

JIZHI was appointed by the National Machinery Industry Standardization Technical Committee to lead the drafting of JB/T 12679-2016: "Technical Specifications for Multi-Station Automatic Balancing & Correction Machines for Micro-Motor Rotors".

This national standard formally codified the precision metrics, cycle times, safety enclosures, unbalance reduction ratio (URR), and vibration filtering thresholds that today govern dynamic balancing across automotive, industrial, and appliance supply chains throughout Asia.

Cycle Time Limit
≤ 3.5 - 6.0s
In-line high-speed transfer
Residual Unbalance
≤ ±2.5 mg
Dual-plane correction
Process Capability
Cpk ≥ 1.67
Automotive Six-Sigma

JB/T 12679-2016 Specification Framework

National Standardization Administration of China

Official Drafter
Measurement Accuracy Specification: Minimum achievable residual unbalance (Emar) defined according to ISO 1940-1 / ISO 21940 standards.
URR (Unbalance Reduction Ratio): Mandates single-run reduction exceeding 90% to guarantee automated single-pass acceptance on high-throughput assembly lines.
Interlocking Safety Systems: Implements dual-channel safety relays, light curtains, emergency stop circuits, and vacuum swarf collection protocols.
Digital Data Traceability: Enforces MES handshake integration, barcode rotor binding, and 100% telemetry archiving.
DIN ISO 21940-11 ENGINEERING TOLERANCE REFERENCE

Permissible Residual Unbalance by ISO Quality Grades (G0.4 – G16)

Standard reference matrix for permissible specific unbalance e_per according to rotor operational speed n and balance quality grade G.

Standard Metrological Formula DIN ISO 21940-11:2017
Permissible Specific Residual Unbalance:
eper = 9549 · (G / n) [μm]
Total Permissible Unbalance:
Uper = eper · m [g · mm]
G: Balance Quality Grade (mm/s)
n: Maximum Service Speed (RPM)
m: Workpiece Rotor Mass (kg)
JIZHI Benchmarked Capability: Repeatable residual unbalance reaches 0.001 g·mm/kg, satisfying aerospace & high-speed EV G0.4 criteria with Six-Sigma Cpk ≥ 1.67.
Grade Typical Rotor Types Nominal Speed Permissible eper JIZHI Compliance
G 0.4 Gyroscopes, precision spindles, turbo-molecular rotors 24,000+ RPM ≤ 0.16 μm Exceeded
G 1.0 EV traction rotors, turbochargers, dental drill armatures 18,000 RPM ≤ 0.53 μm Certified
G 2.5 Gas & steam turbines, machine tool drives, blower wheels 10,000 RPM ≤ 2.38 μm Certified
G 6.3 Automotive flywheels, crankshafts, pump impellers, fans 6,000 RPM ≤ 10.0 μm Certified
G 16 Drive shafts, agricultural machinery, universal couplings 3,000 RPM ≤ 50.9 μm Certified
TIER-1 PROCUREMENT FINANCIAL MODELLING

CapEx Payback & TCO Simulation Model

Interactive ROI & productivity estimator for Tier-1 automotive and industrial machinery buyers

Plant Operating Baseline Parameters

Annual Production Volume (Units) 350,000 pcs
50,000 750,000 1,500,000+
Takt Time Reduction per Rotor (Seconds) 8.5 s
2.0 s (Single Station) 8.5 s (Dual-Station) 15.0 s (5-Station Line)
Operator Hourly Wage ($ / hr) $ 42 / hr
$15/hr (Mexico/Asia) $42/hr (US/EU Baseline) $75/hr (Germany/Nordics)
Dynamic Financial Projection Cpk ≥ 1.67 Yield
Estimated Payback Period
6.4 Months
Estimated Initial CapEx Advantage $ 175,000 ~55% vs European Quote
Annual Labor & Yield Savings $ 82,450 / yr 1.5 FTE Shift Reduction
Export Parameters to RFQ Dossier
Intellectual Property Portfolio

38 Invention Patents Pool (FM01 - FM12+)

Verifiable, state-authorized patents developed in-house to overcome core mechanical, acoustic, and mathematical barriers in balancing.

Patent: FM01 ZL201410196884.2

Density & Angle Dynamic Compensation Method

Automatically senses variations in silicon steel lamination density and non-uniform rotor slot skew angles. Adjusts milling trajectory depth in real-time to avoid over-cutting.

Core Rotor Milling Algorithm
Patent: FM02 ZL201410423108.7

Vibration-Signal-Based Automatic Tool-Setting Device

Uses acoustic vibration pulse detection to register tool-to-workpiece zero contact within ±0.002mm without mechanical dial indicators, eliminating manual calibration errors.

±0.002mm Zero-Contact Sensor
Patent: FM03 ZL201410651234.3

5-Station Axial Rotor High-Speed Positioning Method

Proprietary pneumatic-servo alignment mechanism that locks rotor core axial position under continuous 3.5s transfer speeds without scratching bearing journals.

Zero-Scratch Transfer
Patent: FM04 ZL201510234567.8

Automatic Collet Fixture for Impeller Unbalance Testing

Ultra-precision pneumatic collet clamping structure engineered for turbocharger and HVAC blower wheels, delivering repeatable concentricity runout under 0.001mm.

High-Concentricity Clamp
Patent: FM05 ZL201510345678.9

Continuous Infinite-Rotation Clamping Mechanism

Slip-ring-free continuous pneumatic clamping device allowing endless 360-degree rotation of rotational components during in-situ dynamic unbalance acquisition.

Endless 360° In-Situ Spin
Patent: FM06 ZL201610456789.0

Variable-Stiffness Support for Soft-Bearing Balancers

Electromagnetically tunable spring-rate support pedestal that switches between soft-bearing and hard-bearing sensitivity regimes to measure ultra-light and heavy rotors.

Dual Regime Dynamic Support
Patent: FM07 ZL201610567890.1

Rotary Press Fixation Apparatus for Armature Cores

Hydraulic continuous rotary press that secures armature stacks against high rotational centrifugal forces during unbalance correction without deformation.

Zero-Deformation Fixturing
Patent: FM08 ZL201710678901.2

Synchronous Robotic Transfer Manipulator

Dual-jaw servo synchronized robotic gantry delivering simultaneous unbalance measurement and milling station exchange within 0.8 seconds cycle time.

0.8s Station Handover
Patent: FM09 ZL201810789012.3

Rotational Runout & Eccentricity Auto-Measurement

Integrated non-contact optical triangulation module for vertical balancing systems that decouples geometric runout from pure mass unbalance.

Runout & Mass Decoupling
Patent: FM10 ZL201910890123.4

Radial Support & Axial Pre-Tensioning System

Specialized dynamic cradle engineered for motor rotors with pre-installed ball bearings, applying exact axial preload to simulate real operational engine conditions.

In-Bearing Operational Emulation
Patent: FM11 ZL202010901234.5

Adaptive Clamping Device Against Rotor Core Cracking

Hydraulic pressure-regulated clamping cushions designed for ultra-thin 0.2mm - 0.35mm silicon steel sheets, preventing delamination during rapid milling feed.

0.2mm Thin-Sheet Protection
Patent: FM12 ZL202110012345.6

Flexible Flywheel Dynamic Balancing Clamping Apparatus

Self-centering pneumatic expanding mandrel engineered for automotive dual-mass and flexplate flywheels, handling heavy mass while preserving 0.001mm datum accuracy.

Dual-Mass Flywheel Mandrel
CNAS Laboratory Dynamic Test Bench
China National Accreditation Service for Conformity Assessment (CNAS)
Accreditation Certificate for Dynamic Testing & Primary Calibration
Metrology & Traceability

CNAS Accredited Testing & Calibration Center

JIZHI’s testing laboratory has been formally recognized and accredited by CNAS (China National Accreditation Service for Conformity Assessment), a signatory to the International Laboratory Accreditation Cooperation (ILAC) Mutual Recognition Arrangement (MRA).

This means all calibration reports, unbalance verification certificates, and vibration sensor tests issued by JIZHI carry full international legal validity across 100+ countries, including the United States (A2LA), Germany (DAkkS), Japan (JAB), and South Korea (KOLAS).

ILAC-MRA International Mutual Recognition
100+ Signatory Countries
NIM Standard Rotor Primary Calibration
Traceable to National Metrology
Seismic Deep Isolation Test Benches
Ambient Noise < 0.05 μm/s
Quality Assurance & Global Supply Security

Tier-1 Component Transparency Standard

Foreign B2B buyers never have to worry about proprietary Chinese spares. All key electronic, pneumatic, and linear motion components are 100% sourced from world-renowned Tier-1 brands with 24-hour local distributor support worldwide.

KEYENCE
Japan

High-Speed Laser Displacement Sensors

0.05 μm ultra-high resolution optical sensors for rotor runout, dynamic shaft bending, and non-contact vibration telemetry.

Spare Part Availability: In-stock in US, Germany, Korea, Mexico.
MITSUBISHI
Japan

MELSEC iQ-R / FX5U PLC & Multi-Axis Servos

Precision multi-axis synchronization with SSCNET III/H high-speed bus, executing sub-millisecond milling feed trajectory commands.

Spare Part Availability: Global factory automation supply chain.
SMC PNEUMATICS
Japan

High-Response Pneumatics & Cylinders

ISO standard rodless cylinders, high-flow proportional valves, and vacuum chuck ejectors delivering 10M+ maintenance-free cycles.

Spare Part Availability: 83 countries local stock hubs.
HIWIN / THK
Taiwan / Japan

C3/C5 Precision Ground Ball Screws

Ultra-smooth linear guideways and ground ball screws providing 1 μm positioning repeatability for milling heads and straightening rams.

Spare Part Availability: Global machinery distributor network.
SCHNEIDER
France

Low-Voltage Circuitry & Preventa Safety

UL/CE compliant electrical switchgear, miniature circuit breakers, and SIL 3 / PL e certified safety relay controllers.

Spare Part Availability: Universal industrial electrical stocking.
RENISHAW
UK

High-Resolution Optical Encoders

Rotary and linear optical scales for 0.01° phase angle resolution, ensuring microscopic precision in rotor unbalance location.

Spare Part Availability: Global metrology service centers.
REMOTE DIGITAL ACCEPTANCE PROTOCOL

Zero-Travel Digital FAT & Multi-Angle Telemetry Sign-Off

High-security 4K multi-camera streaming, encrypted PLC cycle logs, and traceable CNAS calibration certificates before crating.

01

4K Multi-Angle Live Stream

Simultaneous high-frame-rate cameras streaming the spindle drive, automatic milling head, robot loader, and operator HMI in real time without lag.

Live Video Telemetry
02

Encrypted PLC Data Logging

Continuous 50-workpiece batch run with raw vibration FFT spectra, cycle takt timestamps, and real-time Cpk calculation exported directly to your QA team.

Cpk ≥ 1.67 Proof
03

CNAS Traceable Certificate

Formal calibration certificate issued by our CNAS-accredited laboratory using standard master rotors, legally recognized under ILAC-MRA in 100+ countries.

ILAC-MRA Legal Validity
04

Shock-Tagged Export Crating

Heavy-gauge vacuum foil sealing with vapor-phase corrosion inhibitors and 3-axis Drop-N-Tell shock/tilt sensors inside solid steel-framed wooden crates.

Zero-Corrosion Guarantee
GLOBAL SERVICE NETWORK

50+ Certified Field Engineers & 24/7 Global SLA Guarantee

Eliminating overseas maintenance anxiety through rapid-response field deployment, remote video commissioning, and regional spare parts hubs.

50+ Certified Mobile Engineers

Field-tested service engineers equipped with mobile vibration diagnostic kits, ready for overseas deployment across North America, Europe, and Asia-Pacific.

4-Continent Field Coverage

Remote Video Commissioning & Telemetry

Dedicated engineers guide line integration, calibration, and pilot runs via encrypted HD video telemetry, slashing deployment lead times by 70%.

Encrypted Real-Time Remote Link

Express Spare Parts Logistics

High-wear parts and critical components stocked in regional warehouses with 48-hour express international dispatch.

48H International Dispatch

ISO 9001 & CNAS Recurrent Recalibration

Annual dynamic balancing traceability and metrological recalibration services upholding continuous CPK ≥ 1.67 production standards.

Guaranteed CPK ≥ 1.67

Request Engineering Collaboration & Technical Whitepaper

Discuss your technical tolerances, cycle-time objectives, or rotor CAD files directly with JIZHI's senior R&D engineering division.

Request Technical Specification Browse Compatible Machinery
Authorized Export Desk Online

Chat directly with application engineers on WhatsApp for CAD feasibility or turnkey quotes.