Telsmith 57SBS Cone Crusher mantle

Telsmith 57SBS Cone Crusher Mantle: Precision Engineered Spares

The Telsmith 57SBS Cone Crusher Mantle is the dynamic Wear parts component that defines the crushing geometry of this high-performance machine. Mounted on the gyrating head, it works against the stationary Bowl Liner to fracture rock. For the 57SBS (Smith Bearing System), which operates at higher speeds and throws than conventional crushers, the mantle must endure extreme compressive stress and abrasive scouring.

As specialized crusher part suppliers, we manufacture these mantles using premium ASTM A128 Grade C (Mn18Cr2) manganese steel. Our casting process incorporates vacuum degassing to eliminate internal porosity, ensuring the liner can withstand the rapid work-hardening cycles required for crushing granite, basalt, and metallic ores.

Technical Specifications & Metallurgy

We adhere to strict OEM dimensional standards to ensure seamless integration with the Telsmith 57SBS head. The following specifications apply.

Performance Engineering: Why Fit Matters

In a Telsmith 57SBS, the mantle is secured by a self-tightening nut. However, the fit between the mantle’s internal surface and the head is critical.

• CNC Precision: We machine the internal contact bands of the mantle on large-scale vertical CNC boring mills. This ensures 100% contact area with the head. A poor fit leads to “point loading,” which can crack the mantle vertically or deform the expensive head.
• Torch Ring Integration: Our design includes a precise relief groove for the Torch Ring (Burning Ring). This feature allows maintenance crews to safely cut the ring to release tension on the locking nut during removal, saving hours of downtime.
• Profile Optimization: We offer Standard, Coarse, and Fine profiles to match your specific Cone Crusher Liner requirements, ensuring the correct Nip Angle is maintained for maximum throughput.

Field Diagnosis: The “Red Dust” Warning

How do you know if your mantle is loose before it destroys the head?

The Symptom: Inspect the area where the mantle sits on the head. If you see fine, reddish-brown powder (Iron Oxide) accumulating at the base or under the nut, this is “Fretting Corrosion.”

The Cause: The mantle is micro-moving relative to the head. This is usually caused by insufficient epoxy backing or reusing a worn locking nut.

The Fix: Schedule a replacement immediately. Continuing to run will grind away the head’s protective surface.

Supply Chain & Installation Protocol

We stock Telsmith 57SBS mantles and compatible Bowl Liners. We strictly recommend replacing them as a matched set to prevent uneven wear and power spikes.

Expert Engineer’s Note: Epoxy Backing

Installation Tip: Never install a Telsmith 57SBS mantle “dry”. Always use a high-impact Epoxy Backing Compound. The backing fills the microscopic voids between the cast mantle and the machined head, acting as a solid shim. This prevents the mantle from rocking under load and eliminates the fretting corrosion mentioned above. Ensure the head is coated with a release agent (like grease or wax) before pouring backing to ensure future removability.