Sandvik CH660 Top Shell casting 442.9037-00 weighing 5098kg

Sandvik CH660 Top Shell 442.9037-00 | EC Type Upper Frame | ASTM A148

Compatible Crusher Model: Sandvik CH660 Cone Crusher
Part Name :Top Shell, Upper Frame
Primary Material :High-Strength Cast Steel
Key Function: Main structural support, houses concaves and mantle
Associated Parts :Mounting surface for feed plate, dust shell, and concave liners.

库存 4 件

分类 Cone Crusher Parts 标签 Cone Crusher Parts

Description

Technical Parameter	Specification Value	Engineering Standard
OEM Part Number	442.9037-00	Sandvik CH660 / H6800 Series
Component Name	Top Shell (Spider Assembly)	EC / EC2 (Extra Coarse) Configuration
Casting Material	ASTM A148 Grade 90-60	Normalized & Tempered Cast Steel
Net Weight	5,098.8 kg	Heavy Structural Component
Tensile Strength	≥ 620 MPa	Resists cyclical fatigue loads
Impact Toughness	≥ 27J @ -20°C	Critical for cold climate mining
Feed Opening	Max. ~275mm (EC Chamber)	Defined by Spider Arm Height
NDT Standard	UT Level 2 / MT Level 2	ASTM E446 / E186

Sandvik CH660 Top Shell 442.9037-00 | EC Chamber | ASTM A148 Cast Steel

The Top Shell (Part No. 442.9037-00) is the upper structural backbone of the Sandvik CH660 (H6800) Cone Crusher. Weighing over 5 tons, this massive steel casting integrates the “Spider” arms and the outer housing into a single monoblock structure. This specific part number corresponds to the EC (Extra Coarse) configuration, featuring elevated spider arms to accommodate the largest possible feed size for secondary crushing applications.

Unlike consumable wear parts, the Top Shell is a permanent capital asset. We manufacture our Top Shells from high-purity ASTM A148 Grade 90-60 Cast Steel. Each unit undergoes a rigorous normalizing and tempering heat treatment process to relieve internal casting stresses, ensuring the frame does not crack under the millions of load cycles it will endure.

Structural Engineering: Why Material Integrity Matters

The Top Shell endures two primary forces:

Vertical Tension: The crushing force tries to lift the Top Shell off the Bottom Shell. The flange bolts transfer this load. Our flanges are precision-machined to ensure 100% contact area, preventing bolt fatigue.
Lateral Shear: The gyrating main shaft exerts side-load on the Spider Bushing. Our Top Shells feature a reinforced central hub to resist ovalization of the spider bushing bore.

Performance Comparison: Premium Casting vs. Standard

In structural crusher spares, the difference lies in the casting defects you can’t see.

Feature	Standard Aftermarket	Our Premium Top Shell	Customer Benefit
Defect Standard	ASTM Level 4-5	ASTM Level 2-3	Less risk of catastrophic cracking
Machining	Manual Drilling	CNC Boring Center	Perfect alignment of Spider Bushing
Arm Protection	None	Integrated Liner Bosses	Ready for Arm Liner installation

Engineer’s Diagnostic & Maintenance Guide (Information Gain)

When to Replace the Top Shell?
While designed for 20+ years of life, certain failures necessitate replacement:

Spider Bushing Bore Ovality: If the central bore housing the Spider Bushing becomes worn or oval (>0.15mm), the main shaft will tilt. This destroys the eccentric bushing below. If line-boring is no longer possible, the Top Shell must be replaced.
Flange Erosion: If the crusher has been operated with loose main frame bolts, the mating flange surfaces may be fretted or “washed out.” A non-flat flange will snap bolts repeatedly.
Arm Cracks: Use Dye Penetrant (DPI) to check the roots of the Spider Arms annually. If cracks extend into the structural body, welding is often a temporary fix. Replacement is safer.

Quality Assurance Protocol

We treat every Top Shell as a safety-critical component.

Ultrasonic Testing (UT): 100% volumetric scan of the spider arms and flange transition zones.
Magnetic Particle (MT): Surface inspection of all machined areas.
Dimensional Report: CMM verification of the bolt circle and spider bore concentricity.

Need to replace a cracked CH660 frame? We can arrange heavy logistics globally.

REQUEST QUOTE FOR 442.9037-00

“Authoritative Engineering Data: All critical metallurgical specifications and dimensional tolerances (e.g., ±0.05mm) are strictly governed by the master English documentation. While localized versions are provided for operational reference, the English original remains the sole binding authority for quality inspection and technical compliance.”