T451-902A1 TTHD Thrust Tapered Roller Bearing 114.3x250.825x53.975mm Heavy Axial

1. Product Overview

T451-902A1 belongs to TTHD series single direction thrust tapered roller bearing, standard inch metric dual dimension 114.3mm inner bore × 250.825mm outer diameter × 53.975mm total width, heavy-duty one-way axial thrust bearing specially developed for heavy industrial equipment.
Model Code Explanation:

• T451: Basic base model of thrust tapered roller bearing
• 902A1: Complete assembly part number including shaft washer, brass cage and tapered roller set
• TTHD: Heavy-duty thrust tapered roller bearing series, dedicated for ultra-large axial thrust working conditions

This bearing set consists of three core parts: flat shaft thrust washer, solid brass machined cage and multiple tapered rollers. Tapered roller matched arc raceway design greatly optimizes contact stress distribution, effectively avoid edge stress concentration under huge continuous axial load. Integral thick brass cage fixes each roller independently, no roller skew or displacement under long-term heavy vibration and impact load. All rings and tapered rollers adopt high-purity GCr15 bearing steel, overall quenching plus ultra-precision mirror superfinishing raceway process, excellent wear resistance and anti-fatigue spalling performance. Single direction bearing structure can only bear one-way heavy axial thrust load, often paired two sets to realize bidirectional axial positioning. Widely applied to steel rolling mill stand, plastic extruder main thrust position, mining rotary table, heavy-duty gearbox, paper pulp refining equipment and all heavy machinery with ultra-large unidirectional axial load.

2. Technical Specifications

Mounting dimension drawings, rolling mill stand assembly matching guides and heavy axial load cycle durability test reports can be provided on customer request.

3. Core Advantages

1. Tapered roller arc contact optimization design, evenly disperse ultra-large axial thrust load, greatly reduce local contact pressure, effectively prevent raceway spalling under long-time mill continuous heavy load operation.
2. Integral solid brass machined cage, high tensile strength and anti-deformation performance, stable roller positioning under severe vibration and alternating impact load of metallurgical equipment, eliminate abnormal noise caused by roller offset.
3. Ultra-high static axial load carrying capacity, suitable for heavy static preload and slow reciprocating thrust working conditions of extruder and rolling mill, far higher load limit than thrust ball bearing of same volume.
4. Separable split assembly structure, shaft washer, roller cage assembly and housing washer can be installed separately, convenient for on-site disassembly, maintenance and clearance inspection of heavy equipment.
5. Unified inch-metric dual standard interchangeable dimensions, fully compatible with global mainstream T451-902A1 heavy thrust bearings, direct replacement without modifying mill housing and spindle structure.
6. High purity quenched bearing steel raw material, uniform internal metallographic structure, strong anti-fatigue performance, greatly extend service life under cyclic heavy axial thrust load.
7. Flat thrust washer flat contact surface, large contact area with equipment thrust end face, no local pressure collapse under long-term heavy load, stable axial positioning accuracy.
8. Rich customizable options: High-temperature heat-resistant steel upgrade, special extreme pressure heavy-duty grease pre-filling, OEM laser marking on washer surface, neutral export anti-rust carton packaging, corrosion-resistant surface passivation treatment.

4. Application Scenarios

T451-902A1 ultra-high load single direction thrust tapered roller bearing is heavy industrial unidirectional axial thrust rotary spare part matched with 114.3mm spindle:

• Steel hot rolling mill, cold rolling mill stand main thrust bearing assemblies
• Large single/double screw plastic extruder head axial thrust bearing sets
• Mine heavy rotary table, rotary kiln bottom limit thrust components
• Heavy-duty industrial reducer, large gearbox one-way axial positioning bearings
• Paper pulp refining machine, large press equipment thrust support parts
• Hydraulic heavy press, forging machinery main axial load bearing units

Aftermarket interchangeable TTHD series heavy-duty thrust tapered roller bearing
Ultra-high static axial load heavy industry thrust bearing solution for rolling mill manufacturers, plastic extruder OEM factories and metallurgical mining equipment bulk maintenance procurement.

5. Why Choose GQZ Bearing

We have 25 years of mature professional manufacturing experience for TTHD series heavy thrust tapered roller bearings including T451-902A1 rolling mill and extruder dedicated heavy load models.
Our T451-902A1 bearings adopt unified international heavy machinery inch-metric dual standard dimensions, consistent dynamic/static axial load parameters, GCr15 integral quenching heat treatment and solid brass cage precision machining standards, fully dimensionally interchangeable with imported original heavy thrust bearings.
Complete OEM & ODM customized service system, supporting high-temperature material upgrade, special heavy-load grease filling, surface anti-corrosion treatment and personalized thrust washer marking demands.
Strict pre-delivery full quality inspection workflow: GCr15 steel raw material composition and hardness test, tapered roller automatic sorting screening, long-cycle alternating heavy axial thrust vibration rotation aging test, brass cage tensile strength full batch inspection.
Professional heavy thrust bearing technical team provides one-to-one ultra-large axial load matching calculation, rolling mill spindle interference fit tolerance design and heavy-duty extreme pressure lubrication maintenance guidance within 24 working hours.
Standardized large-size thrust roller bearing forging & superfinishing production workshop provides competitive factory direct bulk wholesale price, stable long-term mass supply for global metallurgical, plastic extrusion and mining heavy machinery spare parts purchasers.
We specialize in TTHD series ultra-high load thrust tapered roller bearings, strict tapered arc raceway mirror superfinishing and brass cage anti-vibration quality control, committed to long-term stable win-win cooperation with heavy unidirectional axial thrust industrial transmission equipment suppliers.

6. Quality Control

• Raw material chemical composition, hardness and fatigue resistance inspection for GCr15 thrust washer, housing washer and tapered roller blanks
• Precision forging & CNC turning forming processing for flat thrust washers, multiple stress relief tempering cycles, ultra-precision mirror superfinishing grinding for tapered arc raceway surfaces
• Large tapered roller high-temperature integral quenching, nano mirror polishing and high-precision automatic dimensional grouping sorting production line
• Solid brass cage precision turning, drilling and forming process, complete bearing assembly clearance classification inspection, heavy-duty extreme pressure industrial grease quantitative filling procedure
• Targeted professional performance testing: T451-902A1 long-cycle rolling mill continuous heavy axial thrust vibration aging test, high-temperature extruder heat resistance durability simulation test, tapered roller anti-skew running stability detection
• Comprehensive re-inspection of overall dimensional tolerance, thrust washer flatness and raceway surface smoothness before anti-rust oil coating and export moisture-proof carton packaging.

Each production batch of T451-902A1 bearings undergoes steel mill stand continuous ultra-large axial thrust cycle simulation test to guarantee stable high-load anti-vibration one-way thrust support performance for 114.3mm spindle heavy industrial transmission systems.

7. Get A Quote Now

If you need T451-902A1 114.3x250.825x53.975 TTHD single direction heavy thrust tapered roller bearings for steel rolling mill / plastic extruder manufacturing, heavy gearbox axial thrust assembly and mining metallurgical equipment maintenance bulk matching, send your purchase demand directly.
Complete professional one-stop supporting services after sending inquiry:

• Formal official detailed quotation reply within 24 working hours
• One-to-one ultra-large unidirectional axial load matching calculation, mill spindle press-fit installation and heavy-load long-life EP lubrication technical support provided by professional heavy thrust bearing engineers
• Customized bearing upgrade options including high-temperature resistant steel modification and anti-corrosion passivation surface treatment
• Favorable factory direct bulk wholesale price for large quantity single model orders of T451-902A1

Please provide purchase quantity, actual working conditions (continuous ultra-heavy axial thrust load / high-temperature metallurgical workshop environment / heavy vibration mill operation demand) to obtain complete official quotation documents.

8. FAQ