Symons cone crusher parts

Symons cone crusher wear and spare parts — 3ft, 4ft, 4.25ft, 5.5ft, 7ft

Mantles and bowl liners cast in Mn18Cr2, Mn21Cr2. Work-hardens to 500+ HB in operation. Standard, medium, and fine crushing profiles.

Precision bronze bushings

Eccentric bushings (inner/outer): Centrifugally cast C93800 leaded bronze. CNC-machined bore and OD. Socket liners in same material — full contact with main shaft spherical seat.

Countershaft box bushings: Press-fit bronze sleeves for the pinion shaft. Check every 1,000 hours — replace when clearance exceeds 0.5 mm.

Shaft assembly

Forged 42CrMo main shaft with integrated head center. Bearing seats induction-hardened. Assembly includes main shaft, head center, mantle nut, and torch ring.

Gear & pinion drive system

Spiral bevel gear sets. 20CrMnTi carburized and quenched — surface hardness HRC 58–62, core HRC 30–35. Pinion shaft with integral gear. Matched sets, lapped in pairs.

Socket sealing ring

Press-fit dust seal. Prevents fines ingress into the socket liner. Replace when the lip shows visible cracking or hardening.

Bowl

Cast bowl with machined thread. Suspends the bowl liner and feed cone. Inspect thread faces for galling at each liner change.

Adjustment ring

Mounted on the main frame's tapered machined surface. Internal saw thread raises/lowers the bowl. Tramp release: ring lifts against spring pack pressure when uncrushable material enters the chamber.

Mantle locking nut

Torqued onto the main shaft thread. Locks the mantle against the head center. Replace if the driving slots are worn or thread shows deformation.

Main frame

Cast steel main frame — structural base for all upper components. Inspect the tapered seat surface and hub bore during major rebuilds.

To order: provide machine size (e.g. 5.5ft Std), serial number, and part numbers from your parts book. Typical lead time 7–21 days unless in stock.