Steering Columns · Mechanical adjustment
JD-STC-MECHMechanical Steering Column
Four-way adjustable mechanical steering column for heavy, medium and light trucks, buses and new-energy commercial vehicles, with every component machined in-house.
Mechanical four-way adjustment with a silent precision-ball telescopic shaft.
Two-race and three-race precision ball structures developed for different cab requirements.
Fatigue and static torsion validated on a million-cycle bench, plus torsional slip and muddy water tests.
Key parameters
Column specification
Program-specific geometry and functions are confirmed with the sales and engineering team.
- Adjustment
- Mechanical, four-way
- Telescopic shaft
- Precision ball structure, 2-race and 3-race options
- Functions
- Torque transfer, anti-theft, collapse and vibration absorption, multi-function power distribution, angle-sensing memory
- In-house machining
- Steering shafts, universal joint yokes, aluminum column tubes
- Endurance test
- 1,000,000-cycle fatigue and static torsion
- Inline inspection
- 100% — retention force, adjustment force, locking torque
- Applications
- Heavy trucks · Medium trucks · Light trucks · Buses · New-energy commercial vehicles
Built and tested in-house
Shafts, yokes and tubes all machined on site
Beyond transmitting torque, the column adds four-way steering wheel adjustment, steering anti-theft, collapse energy absorption, vibration absorption, multi-function power distribution and angle-sensing memory. The telescopic shaft uses a precision ball structure for silent adjustment, developed in both two-race and three-race configurations.
Shafts, universal joint yokes and aluminum column tubes are all machined in-house: one automated shaft line produces 300,000 steering shafts a year, two yoke lines produce 1.2 million yokes, and one aluminum tube line produces 280,000 column tubes.
- One automated shaft line produces 300,000 steering shafts a year; two yoke lines produce 1.2 million universal joint yokes; one aluminum tube line produces 280,000 column tubes.
- The column assembly line checks bearing press fitting, assembly, retention force, adjustment force and locking torque, with error-proofing machines for bearing and circlip pressing.
- Test equipment includes torsional clearance and slip force benches, million-cycle fatigue and static torsion benches, and metallographic and salt spray equipment.
Developing a cab with adjustable steering?
Send the cab package and adjustment requirement. Sales replies within one business day.