Injection Molded NdFeB Automotive Gauge Needle Magnets
Injection Molded NdFeB Automotive Gauge Needle Magnets
Product Overview:
MetalZenith's precision-engineered needle shaft magnets represent the pinnacle of automotive instrument technology. These injection molded NdFeB magnets provide the reliable magnetic force needed for accurate gauge readings in vehicle instrument clusters. Our proprietary manufacturing process ensures unparalleled consistency and performance, making these magnets the preferred choice for tier-one automotive suppliers worldwide. Each magnet undergoes rigorous quality control to maintain the exacting standards demanded by modern automotive instrumentation.
Key Features:
- Ultra-precise dimensional tolerance (±0.02mm) for perfect instrument calibration and zero drift
- Optimized magnetic field distribution specifically designed for pointer applications, ensuring smooth needle movement
- Exceptional temperature stability from -40°C to +150°C for consistent performance in all climate conditions
- Corrosion-resistant Ni-Cu-Ni triple-layer coating providing long-term protection against humidity and environmental factors
- Available in various magnetic strengths (N35-N52) to match specific instrument sensitivity requirements
- Custom magnetization patterns for specific gauge requirements, including linear and non-linear response curves
- Magnetization direction precisely aligned with mechanical mounting features for simplified assembly
- Low batch-to-batch variation ensuring consistent instrument calibration across production runs
- Specialized surface treatments to enhance mounting options and assembly efficiency
Applications:
- Speedometers and tachometers requiring precise pointer movement
- Fuel level indicators with custom response characteristics
- Temperature gauges for engine and climate control systems
- Pressure meters for oil, fuel, and air systems
- Multi-function instrument clusters with synchronized needle movements
- Premium vehicle instrumentation with enhanced aesthetics and performance
- Aftermarket gauge systems requiring superior accuracy
- Marine and aviation instrumentation operating in demanding environments
- Heavy equipment dashboard systems subject to intense vibration
Technical Specifications:
- Dimensions: Customizable from 1.5mm-10mm diameter, 3mm-15mm length with stepped or tapered options
- Magnetic Grade: N35-N52 with custom formulations for specific temperature requirements
- Residual Induction (Br): 1.17-1.48 T depending on grade selection
- Coercive Force (Hcj): 876-955 kA/m for reliable performance
- Maximum Energy Product (BH)max: 263-422 kJ/m³ for powerful, consistent operation
- Coating Options: Ni-Cu-Ni (standard), Epoxy, Zinc, Gold-plated, with thickness options from 10-25μm
- Operating Temperature: -40°C to +150°C with specialized high-temperature formulations available
- Magnetization Direction: Axial or diametrical with ±1° alignment precision
- Pole Transition Zone: <0.2mm for clean magnetic field definition
Manufacturing Process:
Our gauge needle magnets undergo a sophisticated multi-stage manufacturing process:
- Ultra-pure material preparation with precise element composition control
- Advanced injection molding using proprietary tooling for exceptional dimensional accuracy
- Controlled sintering in inert atmosphere ovens for optimal crystal structure formation
- Precision grinding and surface finishing to exact dimensional specifications
- Multi-stage magnetization using custom field patterns for application-specific performance
- Comprehensive surface treatment and coating application
- 100% automated inspection for dimensional and magnetic properties
- Environmentally controlled packaging to preserve magnetic properties during shipping
Why Choose Our Needle Shaft Magnets:
Our instrument magnets deliver superior pointer response, eliminating needle oscillation and ensuring precise readings under all driving conditions. The carefully engineered magnetic field distribution provides smooth movement and accurate calibration across the entire range of measurement. MetalZenith's instrument magnets offer the lowest return rate in the industry, reducing warranty claims and enhancing end-user satisfaction. Our engineering team provides comprehensive application support, including magnetic circuit optimization and instrument calibration assistance.
