Turbocharger
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This page explains how Center Housing Rotating Assembly (CHRA) is classified within Motor Vehicle Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.
The core rotating assembly of a turbocharger that houses the turbine and compressor wheels on a common shaft within the center housing.
Technical details and manufacturing context for Center Housing Rotating Assembly (CHRA)
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Max Compressor Wheel Diameter | 50–120 mm | Determines flow capacity and matching to engine displacement. |
| Max Turbine Wheel Diameter | 40–100 mm | Affects exhaust gas energy extraction and spool-up. |
| Shaft Diameter | 6–12 mm | Critical for rotor dynamics and bearing selection. |
| Shaft Length | 80–200 mm | Determines overall CHRA envelope and bearing spacing. |
| Max Rotational Speed | 120000–250000 rpm | Limited by bearing and material strength; overspeed causes failure. |
| Max Operating Temperature | 650–1050 °C | Turbine inlet temperature; above this causes creep or oxidation. |
| Balancing Grade | G2.5–G6.3 | Higher grade (lower number) reduces vibration and bearing wear.ISO 1940-1 |
| Shaft Runout | 0.005–0.02 mm | Excessive runout causes imbalance and seal leakage. |
| Bearing Clearance | 0.02–0.08 mm | Affects oil film thickness and damping. |
| Weight | 1.5–8 kg | Influences overall turbocharger weight and mounting. |
| Housing Material | GJS-400–GJS-700 | Higher grade for higher temperature and pressure.DIN EN 1563 |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
Commonly used trade names and technical identifiers for Center Housing Rotating Assembly (CHRA).
This component is essential for the following industrial systems and equipment:
| pressure: | Up to 4 bar (compressor side), up to 6 bar (turbine side) |
| flow rate: | 0.02 to 2.5 kg/s (air mass flow) |
| temperature: | -40°C to 900°C (continuous), 1050°C (peak) |
| rotational speed: | Up to 300,000 RPM |
Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.
Quoted from the published standard.
Manufacturer profiles associated with Center Housing Rotating Assembly (CHRA).
Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.
A practical evidence checklist for RFQ preparation and supplier evaluation.
CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.
The CHRA is the rotating core that converts exhaust gas energy into rotational force to drive the compressor, which pressurizes intake air for the engine.
Typical materials include nickel-based superalloys for high-temperature components, aluminum alloys for the compressor wheel, and steel for the shaft.
Key parameters include wheel diameters, shaft dimensions, maximum rotational speed, operating temperature and pressure, balancing grade, shaft runout, bearing clearance, weight, and housing material. These must be confirmed for the specific application.
Unusual noise, excessive shaft play, oil leakage, or a drop in turbocharger performance may indicate wear or imbalance. Regular inspection and adherence to manufacturer guidelines are recommended.
Editorial classification, named public sources where available, and source-reviewed manufacturer records.
Ask for use case, specification boundaries, supplier type, and RFQ preparation information for this product.
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