| Sealing test / air tightness test: Pass criteria is no air leakage allowed. |
| ABS/sensor standards: Tone wheel single tooth pitch error ≤ ±5%; Total cumulative pitch error ≤ 8%; Sensor output parameters comply with Chinese standards QC/T 783 and QC/T 824. |
| Sealing performance must meet dust and water ingress protection rating per Chinese standard IP69K; No leakage or performance degradation after mud-water test. |
| Hub unit requires friction torque test: To evaluate resistance during normal driving. Pass criteria: For ball bearing type, friction torque not more than 1.7 N·m; for tapered roller bearing type, friction torque not more than 2.5 N·m. |
| Key surface roughness (e.g., raceway, face) Ra ≤ 0.8 μm. |
For the bolt slippage test, the hub bearing unit is installed on the test device, and a torque of 150 N·m is applied to the bolt.
The thread is observed to see if it is damaged or if the bolt rotates relative to the bearing flange.
Pre-sales Service
The manufacturing unit focuses on precisely assembly consumer needs. A expert technical crew will take the initiative to speak with customers, totally apprehend their software eventualities (such as passenger vehicles, industrial vehicles, building machinery, etc.), overall performance necessities and bulk buying plans, and furnish centered product decision suggestions. At the equal time, it affords free product samples, technical parameter manuals and cloth checking out reviews to help clients in finishing product adaptability evaluation; for different customization needs, it will reply rapidly and difficulty personalised solutions, together with scheme design, feasibility evaluation and fee accounting, to grant complete guide for client decisions.
Application
This wheel hub unit adopts an built-in design, seamlessly combining the bearing, hub, sealing ring and ABS sensor ring (if equipped). It extensively simplifies the automobile meeting procedure and reduces the chance of installation errors. The built-in shape now not solely enhances the connection balance between elements however additionally reduces noise and vibration all through driving, offering a smoother using trip for the vehicle. It is broadly appropriate for household cars, SUVs and mild industrial vehicles.
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