Sandvik Cone Crusher Head Centre | OEM Cast Steel Parts

Sandvik CH & CS Cone Crusher Head Centre (Head Body)

The Head Centre (also known as the Head Body or Spider) is the central structural casting of the Sandvik CH (Hydrocone) and CS series cone crushers.
Mounted securely on the main shaft, it serves as the mounting foundation for the Cone Crusher Liner (Mantle).
Unlike the consumable wear parts it supports, the Head Centre is a permanent structural component engineered to withstand massive compressive loads without deformation.
As a specialized crusher parts supplier, we manufacture these critical components to strict OEM metallurgy standards, ensuring a precise fit that prevents mantle loosening and vibration issues.

Core Engineering & Manufacturing Advantages

Using the wrong material for a Head Centre can lead to catastrophic shaft failure.
Our manufacturing process prioritizes structural rigidity and geometric precision.

• Structural Metallurgy: Cast from ASTM A148 Grade 90-60 Cast Steel (Not Manganese).
  We utilize a Vacuum Degassing process to eliminate internal porosity, ensuring the head transmits crushing forces effectively without “sponginess” or cracking.
• Stress Relief Annealing: Every casting undergoes a full normalization and tempering cycle to relieve residual casting stresses.
  This ensures the head maintains its concentricity and interference fit tolerance on the main shaft, even under thermal fluctuation.
• Precision Machining: The conical seating surface for the mantle is CNC machined to tight tolerances.
  A perfect cone fit is essential to prevent the mantle from “rocking” during operation, which breaks the backing material and damages the head.

Technical Specifications

The following table outlines the engineering parameters for our Sandvik replacement heads, ensuring full compatibility with OEM assemblies.

Performance & Maintenance Diagnosis

To maximize the life of your crusher spares, regular inspection of the Head Centre is required during every liner change.

• Mantle Seating Area: Inspect the conical surface for “steps” or fretting wear.
  If the mantle has been loose, it will wear a groove into the Head Centre.
  If this wear exceeds 1-2mm, the head must be re-machined or replaced, otherwise new mantles will crack prematurely due to lack of support.
• Main Shaft Fitment: Check the internal bore and the keyway (for CS series).
  Any signs of “fretting corrosion” (red dust) indicate micro-movement between the head and shaft.
  This suggests the interference fit has been lost.
• Self-Tightening Nut: Ensure the threads at the top of the head (where the locking nut attaches) are clean and undamaged to ensure proper mantle pre-tension.

Model Compatibility List

We supply replacement Head Centres for the following models:

Expert Installation Note

Thermal Assembly is Critical: The Head Centre is typically an interference fit on the Main Shaft.
You must uniformly heat the head to approximately 80°C – 100°C above ambient temperature to expand the bore before installation.
Warning: Never use a torch to spot-heat the head, as this creates stress risers that lead to cracking.
Always use an oil bath or induction heater.

Ensure your crusher’s structural integrity.
Contact our engineering team today to verify dimensions and lead time for Sandvik Head Centres.