Product Overview

This is a complete wedge assembly set for the TP450 cone crusher, comprising the wedge body together with its matching bolts and nuts — the components that clamp and secure the mantle and bowl liner in the crushing chamber. Manufactured by MiningSpares from cast steel with a durable painted finish, the set is supplied as a matched kit so that the wedge, bolt and nut threads are fully compatible and fasten correctly under load.

Wedge Assembly Components

Equipment Overview

The TP450 is a heavy-duty cone crusher widely used in mining, quarrying and aggregate production for secondary and tertiary crushing of hard rock and ores. Inside the crushing chamber, the mantle is mounted on the main shaft and the bowl liner is held in the upper frame; both are locked in position by a ring of wedge assemblies. Each wedge presses the liner against its seating face, while the bolt and nut clamp the wedge in place and maintain the preload as the machine operates.

Why the Wedge Set Matters

• Correct liner clamping — a worn or loose wedge lets the mantle or bowl liner shift, causing uneven wear, poor product shape and possible damage to the frame seating faces.
• Matched kit — wedge, bolt and nut are supplied together so thread pitch, hardness and geometry are compatible and torque correctly.
• Service accessibility — the wedge design allows liner changes to be carried out with standard tooling during scheduled maintenance shutdowns.
• Corrosion protection — the painted finish limits rust during storage and shipment, keeping the assembly free-running at installation.

Typical Applications

The TP450 cone crusher and its wedge assembly set are used in hard rock mining operations, stone quarries, sand and gravel plants, cement and industrial mineral processing, and construction and demolition recycling — wherever secondary or tertiary crushing of abrasive material is required.

Related Parts Available

• TP450 TIC composite bowl liner and mantle set (TRIO17023515 / TRIO17023516)
• TP450 concave ring and mantle (Mn18Cr2 / Mn22Cr2)
• Bowl liner, mantle, concave segments and locking components for the TP450 cone crusher

Request a Quotation

For pricing, lead time and availability on the TP450 wedge assembly set (TRIO17026581 with TRIO17023529 bolt and TRIO17023527 nut), please use the Ajouter à la demande button on this page or email us at [email protected]. Our sales team responds within one business day.

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The assembly reference number (TRIO TRIO17001140) corresponds to chapter 1.6 HEAD AND MAIN SHAFT ASSEMBLY of the TC84X Parts Manual and contains 7 line items as listed below. Each part can be supplied individually or as a complete short-head main-shaft assembly; please quote the TRIO part number(s) when ordering.

Aftermarket replacement parts compatible with TC84X cone crusher. Not affiliated with or endorsed by the original equipment manufacturer.

1.6 Head and Main Shaft Assembly (Short Head) — TRIO17001140

Typical Applications

The TC84X short-head main-shaft assembly is used in secondary and tertiary crushing circuits where a finer product gradation is required. Compared with the standard (coarse-cavity) head, the short-head profile produces a higher proportion of finished-size particles in a single pass, making it the preferred cavity for:

• Hard-rock aggregate production (granite, basalt, diabase, gneiss)
• Iron-ore and copper-ore beneficiation plants (fine crushing stage)
• Recycled-aggregate and construction & demolition (C&D) processing lines
• Cement and lime-stone preparation circuits feeding ball mills

The head and main-shaft assembly is the rotating heart of the crusher and works in conjunction with the bowl assembly (chapter 1.7, TRIO5007838) to set the closed-side discharge opening. Inspection of the head casting, main shaft and mainshaft cap is recommended every 2,000 operating hours or whenever the mantle is replaced.

Frequently Asked Questions

Q1. What material is the main shaft (TRIO17001147) made of?
Forged from 40CrNiMo alloy steel, quenched and tempered to a typical hardness of 280–320 HB. Ultrasonic testing (UT) is performed on every forging before machining, and a test certificate is shipped with the part.

Q2. Can CASTEEL supply the head casting (TRIO17001142) and the cap (TRIO17001146) separately?
Yes. Both items are available as individual castings, with or without finish-machining. We can also supply them as a matched pair already fitted with the seal ring.

Q3. Is this assembly compatible with both TC84X and TC84XR models?
Yes. TRIO17001140 is the short-head main-shaft assembly for the TC84X platform; the same assembly fits the equivalent TC84XR model year — the TC84X / TC84XR naming is a commercial designation only. When ordering, simply quote the TRIO part number(s) shown in the table above.

Q4. What is the typical lead time?
Standard lead time is 30–45 days for castings + 15–20 days for machining. Stocked main shafts and caps can be dispatched within 7–10 working days for urgent breakdown orders.

Q5. Do you provide a quality / test package?
Yes. Every shipment includes the material test certificate (MTC), UT report, dimensional inspection report, and a warranty certificate. Third-party inspection (SGS, BV, TUV) can be arranged on request.

About CASTEEL MiningSpares

CASTEEL MiningSpares (est. 2003) is a Chinese foundry and machining supplier specialising in after-market wear and structural parts for cone, jaw, gyratory, VSI and hammer crushers. We hold ready stock of common TC84X and TC84XR line items and can tool up new patterns within 30 days for less common parts. All castings are produced in our own foundry under ISO 9001:2015 quality system, with TÜV SÜD audited manufacturing processes.

Send us your enquiry with the TRIO part number(s) or the equipment serial number and we will provide a quotation within 24 hours. Drawings, forging records and UT / MPI reports are available on request.

Related TC84X Assemblies

• TRIO17001222 — MAIN FRAME ASSEMBLY (chapter 1.1)
• TRIO17001205 — UPPER FRAME ASSEMBLY (chapter 1.2)
• TRIO17078213 — COUNTERSHAFT BOX ASSEMBLY (chapter 1.3)
• TRIO17001236 — SOCKET ASSEMBLY (chapter 1.4)
• TRIO17001188 — ECCENTRIC ASSEMBLY SHORT HEAD (chapter 1.5)
• TRIO5007838 — BOWL ASSEMBLY, SHF, TC84X (chapter 1.7)

Each sub-assembly can be quoted and supplied separately. CASTEEL MiningSpares holds ready stock of common TC84X wear and structural parts. Send us your parts list for a prompt quotation.

The post TRIO17001140 Main Shaft Assembly For TC84X Cone Crusher appeared first on Mining Spares | Crusher Spare Parts ,Drifter Parts ,Slurry Pump Parts.

Items: Concave, Mantle, Concave Ring, Concave Segment, Bowl Liner, Cone Liner, Arm Guard, Distribution Plate
Casting Material: Austenitic Manganese Steel (Mn14, Mn14Cr2, Mn18Cr2, Mn22Cr2)
Méthode de moulage : Coulée de sable au verre d'eau
Applicable Material: Gravel, Granite, Basalt, Ore, Limestone, Sandstone, Quartz, Cobblestone
Applications: Mining, Quarry, Construction, Cement and Materials, Recycling

MiningSpares’ Cedarapids RC54 Bowl Liner and Mantle uses high-quality manganese alloys, including 13% Standard, 18% Premium, and 22% High alloys, to cater to diverse operational requirements and can be customized according to your needs
Nous proposons également différentes couleurs au choix : rouge, bleu, vert, noir, gris, etc.

Rollercone RC54 Mantle & Bowl Liner Specifications

The manufacturing process is very rigorous to ensure a perfect fit with the Cedarapids RC54 Cone Crusher.

Our Rollercone RC54 Mantle & Bowl Liner wear parts are manufactured using advanced casting processes. During the manufacturing process, we strictly control material selection and process flow to ensure excellence in product quality and performance. We use high-quality alloy steel materials, combined with advanced casting technology, to ensure that the wear parts have excellent wear resistance and impact resistance. In addition, our production process includes precision machining and heat treatment processes to further improve the strength and durability of the liners.

For most of the world famous brands like Metso, Sandvik, Terex, Shanbao, Telsmith and so on
Nous disposons tous d'un stock important de dessins originaux, ce qui nous permet de produire à un coût relativement faible.

Related Cone Crusher Wear Parts

Browse more high manganese cone crusher wear parts from MiningSpares:

• PYB1200 Bowl Liner and Mantle
• MX4 Bowl Liner C for Cone Crusher
• H8800 Hydrocone Liner
• Cone Crusher Wear Parts BG00523226

The post EL-Jay Rollercone RC54 Cone Crusher Wear Parts – Mantle & Bowl Liner appeared first on Mining Spares | Crusher Spare Parts ,Drifter Parts ,Slurry Pump Parts.

The Step Bearing Set (Part 18564932) is the complete upper thrust bearing assembly engineered for the ThyssenKrupp Kubria F210 Cone Crusher. The set includes the step bearing, retainer, dust seal, and mounting hardware required to restore main shaft support and axial positioning during the crushing cycle — a direct-fit replacement for OEM part 18564932.

★OEM EquivalentDirect replacement for Kubria F210 original step bearing assembly 18564932. Drop-in fit, no modification.

Complete SetBearing + retainer cover + dust seal + hardware. Replace the whole assembly in one shutdown.

▲High-Load CapacityAlloy-steel bearing + bronze backing handles the main shaft’s vertical load and impact forces.

✓QA InspectedDimensional check, hardness test, surface finish and run-out inspection before shipment.

1. What Is a Step Bearing Set in a Cone Crusher?

In a cone crusher, the step bearing sits at the top of the main shaft (between the shaft head and the spider arm). It performs three critical functions simultaneously:

• Supports the main shaft vertically — absorbs the entire weight of the shaft plus crushing forces during the crushing cycle.
• Provides axial positioning — prevents the shaft from moving up or down inside the crushing chamber, keeping CSS (closed side setting) stable.
• Allows controlled rotation — the polished bearing surface lets the shaft rotate at low speed (typically 400-600 RPM) with minimum friction.

The step bearing set is the complete service assembly — the bearing itself, the retainer cover that holds it in place, the dust seal that keeps contamination out of the oil film, and the mounting hardware. When the step bearing fails (spalling, brinelling, overheating from oil starvation, or seal contamination), the whole set is normally replaced together during a planned shutdown.

Failure warning signs: crusher trips on overload · oil temperature spikes above 60°C at the step bearing housing · metallic particles in step bearing oil sample · audible “knocking” on each crushing cycle · CSS drift / inconsistent product size. Replace the complete step bearing set before catastrophic shaft damage occurs.

2. Components in This Set

Composant	Function	Matériau
Step Bearing (Main Disc)	Main shaft support surface; carries vertical + impact load	Alloy steel (forged/rolled), hardened to 58-62 HRC on contact face
Retainer Cover	Clamps the bearing to the frame; locates the seal housing	Ductile iron / cast steel, epoxy-coated for corrosion resistance
Joint anti-poussière	Prevents dust, fines and water ingress into the oil film	NBR rubber + polyurethane + steel insert (labyrinth + lip combination)
Backing Ring	Distributes clamping load evenly; allows axial float tolerance	Bronze or brass (low-friction interface)
Mounting Bolts & Washers	Secures retainer cover to crusher frame	Grade 10.9 high-tensile steel, zinc-flake coated
Hot-dipped tungsten steel overlay	Bearing contact face treated with hot-dipped tungsten-steel overlay; surface hardness ≥ 65 HRC equivalent, metallurgic loy-steel substrate for superior abrasion resistance under cyclic impact loads.

About Hot-Dipped Tungsten Steel Overlay: The bearing contact face receives a hot-dipped tungsten-steel overlay treatment. This surface engineering creates a hard, wear-resistant layer (surface hardness ≥ 65 HRC equivalent) metallurgically bonded to the alloy-steel substrate. The result is a composite bearing surface that combines the impact toughness of forged alloy steel with the exceptional abrasion resistance of tungsten steel — extending service life by 30-50% versus standard through-hardened bearings in high-feed, abrasive-crushing duties.

3. Compatible Equipment

This step bearing set is engineered specifically for the following ThyssenKrupp Kubria cone crusher models:

OEM Brand	Model Series	Crusher Type	Recommended Application
ThyssenKrupp (Kubria)	F210 (primary fit)	Cone crusher, coarse/medium chamber	Hard rock, iron ore, copper ore, gold ore, granite, basalt
ThyssenKrupp (Kubria)	F-series (cross-reference)	Cone crusher	Verify with crusher serial number before ordering

Cross-reference numbers: 18564932 (primary) · ThyssenKrupp drawing reference available on request.

4. Working Principle

During Crushing (Loaded Cycle)

As the mantle compresses rock against the bowl liner, the main shaft experiences a downward impact force. The step bearing on top of the shaft bears this load and transfers it to the crusher frame via the retainer cover. The bearing surface floats on a thin hydrodynamic oil film (~0.05 mm), preventing metal-to-metal contact.

During Idle Rotation (Unloaded)

Between crushing strokes, the eccentric rotates the main shaft slowly. The step bearing surface allows low-friction rotation while the dust seal keeps oil clean and contamination-free. Stable oil temperature (40-55°C) is the key health indicator.

5. Key Features & Advantages

• Direct OEM replacement — engineered to match Kubria F210 original part 18564932 dimensions, tolerances and load rating. No frame modification required.
• High-grade alloy steel — through-hardened bearing surface (58-62 HRC) resists brinelling, spalling and fatigue under cyclic impact loads.
• Concentric ring pattern — precision-machined grooves on the bearing face ensure uniform oil film distribution and reduce localized hot spots.
• Bronze backing ring — accommodates minor axial float without galling, extending bearing life during start-up and shutdown.
• Labyrinth + lip dust seal — double protection against dust ingress; critical in crushing environments where fines contaminate lubricant.
• Pre-assembled kit — saves 6-8 hours of downtime vs. sourcing components separately; everything fits together out of the box.
• Serial-number traced QC — every set is dimensionally inspected, hardness-tested and run-out checked before packing.
• Stock available — lead time typically 5-10 working days from stock; expedited options for emergency breakdowns.

6. Typical Applications

The Kubria F210 cone crusher is widely deployed across the mining and aggregate industries. The 18564932 step bearing set supports the following operations:

• Iron ore mining — secondary and tertiary crushing of magnetite and hematite ore.
• Copper ore processing — medium-hard ore crushing in concentrator plants.
• Gold ore crushing circuits — hard rock gold operations in Africa, South America and Australia.
• Granite and basalt quarries — aggregate production for construction and infrastructure.
• Cement plant raw material preparation — limestone and clinker crushing.
• Industrial mineral processing — quartz, feldspar, andalusite and similar abrasive feedstocks.

7. Material & Manufacturing Process

Stage	Process Detail
Material selection	Alloy steel (42CrMo / 50Mn equivalent) for bearing disc; ductile iron (GGG60) for retainer cover; NBR + PU for dust seal
Forging / Casting	Bearing disc: open-die forged for grain-flow continuity. Retainer: sand-cast with riser design to avoid shrinkage porosity.
Rough turning	All critical surfaces rough-machined with 3-5 mm allowance for finish.
Heat treatment	Bearing disc: quenched and tempered (Q&T) to achieve 58-62 HRC surface hardness with tough core.
Finish machining	CNC turning + grinding to achieve Ra ≤ 0.4 µm on the bearing contact face; concentricity within 0.02 mm.
Concentric ring machining	Concentric grooves precision-cut for hydrodynamic oil film distribution.
Surface treatment	Retainer cover: sand-blasted, anti-rust primer, epoxy top-coat. Hardware: zinc-flake coating (240h salt spray).
Final assembly	Step bearing + backing ring + hardware pre-assembled; dust seal installed in groove. Each set serial-numbered and shipped in matched pair packaging.

8. Quality Control & Inspection

Every 18564932 step bearing set undergoes the following inspection protocol before shipment:

• Dimensional inspection — critical diameters, heights and bolt-circle patterns verified with CMM.
• Hardness testing — surface and core hardness checked on bearing disc (target 58-62 HRC surface).
• Surface finish — bearing contact face roughness Ra measured (target ≤ 0.4 µm).
• Run-out test — axial and radial run-out checked against drawing tolerance.
• Ultrasonic testing (UT) — bearing disc inspected for internal defects per ASTM A388.
• Magnetic particle inspection (MPI) — surface crack detection on critical load-bearing surfaces.
• Visual & packaging check — final QC before export crating; matching components verified.

9. Packaging & Shipping

• Individual wrapping — each component wrapped in VCI anti-rust film + bubble wrap.
• Inner packing — foam-fitted wooden crate with cardboard separators.
• Outer packing — ISPM-15 compliant fumigated plywood export crate, heat-treated and stamped.
• Marking — crate labeled with part number 18564932, quantity, net/gross weight, and “Fragile / Heavy” handling marks.
• Shipping options — sea freight (FCL / LCL), air freight, or courier (DHL / FedEx / UPS) for emergency orders.
• Documents — commercial invoice, packing list, material certificate (EN 10204 3.1), heat-treatment certificate, QC report.

10. Specification Table

Objet	Detail
Product Name / Part Name	Step Bearing Set (Upper Thrust Bearing Assembly)
Numéro de pièce	18564932
Compatible Crusher	ThyssenKrupp Kubria F210 Cone Crusher
Set Components	Step Bearing, Retainer Cover, Dust Seal, Backing Ring, Mounting Hardware
Bearing Material	High-Grade Alloy Steel (42CrMo equivalent), Q&T
Bearing Surface Hardness	58-62 HRC
Retainer Material	Ductile Iron (GGG60), Epoxy-Coated
Dust Seal Material	NBR + Polyurethane + Steel Insert
Backing Ring Material	Bronze / Brass
Bearing Surface Finish	Ra ≤ 0.4 µm, concentric grooves for oil distribution
Approx. Net Weight (full set)	Contact us for the latest weight per your serial number
Operating Temperature	-20°C to +80°C (continuous duty); oil temp target 40-55°C
Lubrication	Oil bath / flood lubrication (per OEM specification)
Recommended Service Life	4,000-8,000 operating hours (depends on duty cycle, feed hardness, oil cleanliness)
Manufacturing Standards	OEM-equivalent tolerances, ISO 9001 quality system
Inspection Standards	CMM dimensional, hardness per ASTM E18, UT per ASTM A388, MPI per ASTM E709
Country of Origin	China
HS Code	8474.90 (parts of machinery for sorting, screening, separating, washing or otherwise treating earth, stone, ores or other mineral substances)
MOQ	1 Set
Lead Time	5-10 working days from stock (expedited options for breakdowns)
Packaging	VCI film + foam-fitted ISPM-15 plywood export crate
Shipping Terms	EXW / FOB / CIF / DDP (negotiable)
Warranty	12 months against manufacturing defects

11. Why Buy From MiningSpares

• Specialized in crusher wear parts — our core focus is cone crusher replacement parts for ThyssenKrupp Kubria, Trio, Sandvik, Metso, Symons, Telsmith and other major brands.
• Direct factory pricing — we manufacture in-house with foundry partners, eliminating middleman markups.
• Large inventory — common parts ready to ship; emergency breakdown orders prioritized.
• Engineering support — we help you cross-reference part numbers and confirm fitment by crusher serial number.
• Global export experience — we ship to 60+ countries with full export documentation.
• Quality guaranteed — every part comes with material certificate and dimensional QC report.

Need a quote or want to confirm fitment for your serial number?

Send your crusher model, serial number and the part you need — we reply within 24 hours.

Request a Quote

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