How Are 60-Tonne Cast Steel Bearing Housings Inspected and Shipped?

Henan Xintengfei Steel Casting recently completed pre-shipment inspection of five bearing housings for a customer in Jiangsu, China. Each weighs 60 tonnes. Before loading, staff checked each casting’s appearance, specifications and inspection reports to confirm compliance with delivery requirements.

Delivering a 60-tonne casting takes documented checks at every stage. Pre-shipment acceptance focuses on three points: casting quality, in-house production and matching inspection records.

1. The Casting: What Makes a 60-Tonne Bearing Housing Challenging?

Bearing housings support bearings and transfer loads through their bases and bearing bores, helping heavy equipment run steadily. A failure can affect an entire production line.

Large wall-thickness variations and crack-prone corners make casting process design critical. Xintengfei uses computer simulation to refine gate and riser locations and dimensions, optimizing metal flow and solidification to reduce shrinkage porosity and cracking risks.

With 30 years of large steel casting experience, Xintengfei serves mining, cement, power and metallurgy customers. We manufacture bearing housings in various shapes and sizes, accepting orders for units weighing over one tonne with delivery to agreed schedules.

2. The Factory: Is Production Fully In-House?

These 60-tonne housings were produced entirely in Xintengfei’s own workshops, from pattern making, molding, melting and pouring to heat treatment and machining, without outsourcing.

This supports three practical benefits:

Schedule control: Each stage is managed against contract milestones.

Traceability: Issues can be traced to the relevant process and personnel.

Simpler coordination: One team handles the order through delivery.

The wooden patterns are made from durable Mongolian Scots pine. Dedicated casting workshops and specialist teams address production challenges.

3. Inspection: Documented Results Before Dispatch

Before shipment, each casting is checked against its inspection reports to ensure full correspondence between the product and its quality records.

Xintengfei has a German OBLF optical emission spectrometer, large heat-treatment furnaces and ISO 9001 quality management certification. Its NDT team includes personnel with Chinese national Level I, II and III qualifications. Products are exported to over 30 countries and regions, with long-term customers including China First Heavy Industries, CITIC Heavy Industries, Shanghai Electric, Jiangsu Pengfei, Huaxin Cement and Metso.

Pre-shipment checks include:

Chemical composition: Optical emission spectrometry measures carbon, silicon, manganese, sulfur, phosphorus and alloying elements, with three checks per heat during melting.

Mechanical properties: Tensile and impact testing.

Non-destructive testing: Ultrasonic testing (UT) checks for internal defects; magnetic particle testing (MT) checks for surface and near-surface defects. Critical load-bearing areas are individually re-inspected after rough machining.

Preventing nonconforming castings from leaving the factory remains a core quality-control requirement.

4. Visit the Factory Before Choosing a Supplier

After inspection and loading, these 60-tonne bearing housings are being dispatched to the Jiangsu customer. The finished products reflect the production processes and quality checks behind each delivery.

For bearing housings or other large steel castings, visit Xintengfei to see the workshops, equipment and finished products, and discuss manufacturing requirements and delivery schedules in person.

5. Four Common Questions About Cast Steel Bearing Housings

Q1: Which industries use cast steel bearing housings?

A: Mining, cement, power and metallurgy. Materials and processes are adjusted to suit loads and operating conditions.

Q2: What materials are commonly used?

A: Common grades include ZG230-450 and ZG270-500. Other carbon or low-alloy cast steels are available on request. Grades, standards and heat-treatment requirements depend on drawings, loads, temperatures and operating conditions.

Q3: What is the lead time?

A: Lead time depends on casting weight, quantity and material requirements. A production schedule is provided with the quotation and managed against agreed contract milestones.

Q4: What inspections are performed before shipment?

A: Each batch undergoes chemical composition analysis and tensile and impact testing. Critical components receive UT and MT as specified by the customer. Material and inspection reports accompany the shipment.