Linear Accelerator (LINAC) Gantry
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This page explains how Rotational Bearing Assembly is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.
A precision mechanical assembly that enables smooth, controlled rotation of the LINAC gantry around the patient axis.
Technical details and manufacturing context for Rotational Bearing Assembly
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Bore Diameter | 500–1200 mm | Matches gantry mounting interfaceISO 15 |
| Outer Diameter | 600–1500 mm | Determines housing envelopeISO 15 |
| Height | 60–120 mm | Affects axial stiffness and weight |
| Dynamic Load Rating | 50–200 kN | For 10^6 revolutions L10 lifeISO 76 |
| Static Load Rating | 100–400 kN | Maximum non-rotating loadISO 76 |
| Rotational Accuracy | ±0.05 mm | Radial runout at reference diameterISO 1101 |
| Axial Runout | ±0.03 mm | Ensures gantry plane stabilityISO 1101 |
| Maximum Speed | 10–30 rpm | Limited by lubrication and inertia |
| Operating Temperature | -10–50 °C | Grease and seal performance range |
| Protection Class | IP54–IP65 | Dust-tight and water-resistantIEC 60529 |
| Material Grade | 42CrMo4 | Rings and rolling elementsDIN EN 10083 |
| Weight | 150–500 kg | Affects gantry counterbalance |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is essential for the following industrial systems and equipment:
| pressure: | Max 5 MPa static, 2 MPa dynamic |
| other spec: | Max rotational speed: 10 RPM, Load capacity: 50 kN axial, 100 kN radial |
| temperature: | -20°C to +80°C |
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 Rotational Bearing Assembly.
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A practical evidence checklist for RFQ preparation and supplier evaluation.
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The primary function is to enable smooth, controlled 360-degree rotation of the LINAC gantry around the patient axis while supporting the weight of mounted equipment and maintaining isocenter stability for treatment accuracy.
The assembly is typically made from high-grade alloy steel and precision bearing steel, with specialized lubricants for the bearing surfaces. The material grade for rings and rolling elements is often 42CrMo4 per DIN EN 10083, but this should be confirmed for the specific model.
Key parameters include bore diameter, outer diameter, height, dynamic and static load ratings, rotational accuracy, axial runout, maximum speed, operating temperature, protection class, material grade, and weight. These must match the gantry's mounting interface and load requirements.
The assembly maintains isocenter stability during gantry rotation. Any deflection or backlash can cause misalignment of the radiation beam, so precision machining and pre-load adjustment are critical to ensure minimal movement and consistent targeting.
Editorial classification, named public sources where available, and source-reviewed manufacturer records.
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