Single Station Jounce Tester SAE J826
Get a quote：
Whats/App: +86 185 0176 3615
Web: qinsun-lab.com
Applications of the Single Station Jounce Tester include, but are not limited to, the following fields:
Mechanical Manufacturing and Precision Manufacturing: Detection of runout error is a core indicator for measuring the quality of rotating parts, directly affecting the smoothness of equipment operation.
Industrial Inspection Equipment: Runout testers are used to detect the outer diameter, runout value, and out-of-roundness of workpieces such as metal shafts and rubber rollers.
Automated Production Lines: Runout testers are used in automated production lines to ensure the accuracy and stability of equipment.
Quality Control: Runout testers are used in quality control processes to detect and analyze the runout error of equipment, ensuring product quality.
Scientific Research and Development: Runout testers are used in scientific research and development to test and verify the performance and reliability of equipment.
Standards
QC/T 740-2017 – Automotive Seat Assembly Fatigue Test Standard
SAE J826-2002 – Anthropomorphic Test Devices for Vehicle Seats
Features
Simulates real-world vertical vibration loads with sinusoidal motion.
Evaluates fatigue life of seat frame, cushion foam, and fabric upholstery.
Upper jounce assembly includes body form and adjustable weights for realistic load simulation.
Height and lateral adjustment ensure proper alignment and horizontal parallelism.
Overhead crane for easy installation and removal of test samples.
Servo-hydraulic lower jounce table with PC-based closed-loop control.
Programmable vibration frequency, amplitude, and acceleration with four control modes: table displacement, table acceleration, upper assembly displacement, and upper assembly acceleration.
Optional slave stations allow simultaneous testing of multiple samples.
Designed to prevent excessive inertia loads, ensuring realistic and reliable test results.
Test Principle
The tester applies controlled vibration to the seat cushion and backrest at a set frequency and amplitude for a predetermined number of cycles. After testing:
Seat frame should remain intact with no cracks.
Foam and cushion should maintain their shape without deformation.
Upholstery should show no damage.
Maximum H-point variation remains within rated range.
Typical test setup:
Seat cushion: 100.000 vibration cycles at 100 times/minute.
Backrest: 50.000 vibration cycles at 100 times/minute.
Parameters
| Parameter | Specification | Standard/Typical Value |
|---|---|---|
| Torsion Angle Amplitude | 0 – 50° | 21° |
| System Power | Mechanical vibration | — |
| Vibration Frequency | 1 – 5 Hz, adjustable | 1.5 Hz |
| Vibration Amplitude | 0 – 35 mm, adjustable | 30 mm |
| Loading Method | Weight loading | — |
| Load Weight | Cushion: 68 kgf, Backrest: 29 kgf | — |
| Vibration Cycles | 0 – 999.999 | — |
| Workstations | 1 (optional 2-seat testing) | — |
| Stop Mode | Automatic stop when cycles reached | — |
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