Product Overview

Electric Power Steering (EPS) is the core steering execution component of intelligent passenger vehicles and new energy vehicles, directly determining steering hand feel, driving safety and autonomous driving control accuracy. As a professional intelligent chassis automation solution provider, HOLS independently develops the full-automatic EPS assembly and testing production line, covering column EPS, rack EPS, dual-motor EPS and rear-wheel steering EPS multi-platform flexible production. This turnkey EPS production line integrates precision mechanical assembly, electronic component press-fitting, torque-angle calibration, comprehensive EOL performance testing and full-data traceability, fully matching IATF 16949 automotive-grade mass production standards, and has stable delivery records for global Tier 1 steering system manufacturers.

Full Standardized EPS Assembly & Testing Workflow

The whole line adopts a closed-loop automatic operation mode, covering all core EPS manufacturing links, with critical assembly and testing stations set as key quality control points:

1.Housing & Shaft Automatic Feeding & Incoming Inspection

Automatic feeding, visual appearance and dimensional inspection of EPS steering column housing, input shaft, output shaft and intermediate shaft to screen defective raw materials and avoid subsequent assembly failure risks.

2.Bearing Precision Servo Press-Fitting

Force-displacement double closed-loop servo press-fitting for upper and lower bearings, real-time monitoring of press-in curve to control assembly interference, reduce EPS steering jitter and abnormal noise.

3.Torque Sensor & Angle Sensor Micro Press-Fitting

High-precision positioning assembly of EPS torque sensor, steering angle sensor and signal acquisition chip, strictly controlling sensor installation coaxiality to guarantee accurate steering torque signal feedback.

4.Worm & Worm Gear Core Transmission Assembly

Automated matching and assembly of worm shaft, worm gear and damping components, standardized meshing gap control to optimize EPS low-speed steering smoothness and eliminate abnormal meshing noise.

5.EPS Assist Motor & ECU Controller Mounting & Locking

Automatic positioning, bolt torque tightening and wiring harness plugging for EPS power assist motor and ECU drive controller, constant torque locking to prevent loosening under long-term road vibration.

6.Sealing Dispensing & Dustproof Assembly

Quantitative automatic glue dispensing and sealing ring assembly for EPS housing joints, improving dustproof, waterproof and anti-corrosion performance to adapt to complex vehicle under-hood working environments.

7.Multi-Dimensional EPS Calibration Station

Complete torque sensor zero-point calibration, steering angle offset calibration, assist characteristic curve matching and motor current parameter correction, eliminating individual EPS hand feel differences of finished products.

8.Comprehensive EOL Function Testing (Core EPS Testing Station)

Professional EPS end-of-line comprehensive bench test, covering full test items: steering assist performance, torque response speed, return-to-center performance, steering dead zone, motor current fluctuation, CAN bus signal communication, noise and vibration detection, fault code self-check and overvoltage/undervoltage protection verification.

9.Laser Traceability Marking & Intelligent Sorting

Unique one-to-one traceability code laser marking for qualified EPS finished products, automatic separation of good parts and defective products, all assembly parameters and EOL test data uploaded to MES system for full lifecycle traceability.

Core Competitive Advantages of HOLS EPS Production Line

1.Multi-Spec Flexible EPS Production Compatibility

Modular fixture and adjustable test bench design support rapid model switching of column EPS, rack EPS, single-motor and dual-motor EPS, rear-wheel steering EPS, greatly reducing customer production line reconstruction cost.

2.Ultra-High Precision EPS Assembly Control

All core press-fitting, sensor assembly and transmission matching stations adopt micron-level positioning modules, effectively reducing finished EPS steering noise, jitter and return-to-center deviation, improving product yield significantly.

3.Complete Full-Coverage EPS EOL Testing Capability

Independent-developed EPS comprehensive test bench covers all OEM required steering performance test items, simulating real vehicle steering working conditions to realize 100% full inspection of every EPS unit off the line.

4.Integrated Mechanical Assembly + Electronic Calibration One-Stop Solution

Realize mechanical core assembly, sensor calibration, ECU matching and bench performance testing on a single connected production line, avoiding offline turnover errors and improving overall production takt efficiency.

5.Automotive-Grade Digital Traceability System

Every EPS component feeding record, press-fitting curve, calibration parameter and EOL test report is automatically stored and bound to the unique product SN code, fully meeting OEM quality audit and product recall management requirements.

Application Scope

HOLS full-automatic EPS assembly and testing production line is widely applied to mass production of electric power steering systems for new energy passenger cars, intelligent driving vehicles and commercial vehicles, serving global professional steering system Tier 1 suppliers and vehicle OEM manufacturers.

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