51205 Single‑Direction Thrust Ball Bearing 25x47x15mm Separable Flat Washer Type

1. Product Overview

51205 is single‑direction thrust ball bearing, dimension 25 mm bore × 47 mm OD × 15 mm height.
This bearing consists of separable shaft washer, housing washer, steel balls and stamped steel cage. It is specially designed to bear heavy unidirectional pure axial load, cannot withstand any radial load. Separable components allow separate installation of shaft washer, housing washer and rolling element assembly for convenient mounting, disassembly and inspection. Manufactured from fully quenched GCr15 bearing steel. Widely used for vertical pumps, lifting jacks, low‑speed reducers, crane hook assemblies, machine‑tool clamping mechanisms and general industrial equipment subjected to one‑way axial thrust force.

2. Technical Specifications

Mounting‑shoulder drawing and performance test reports can be provided upon customer request.

3. Core Advantages

• Separable component design: Shaft washer, housing washer and ball‑cage assembly can be assembled separately, simplifies installation, removal and routine inspection work.
• High unidirectional axial load‑carrying capacity, optimized for pure axial thrust working conditions; not suitable for radial load application.
• Precision‑ground raceway surfaces on both shaft washer and housing washer, low friction, stable running under heavy static and intermittent axial load.
• GCr15 overall quenched bearing steel, stable metallographic structure, excellent contact‑fatigue and wear‑resistant performance for cyclic axial‑load operation.
• Stamped steel cage with stable rigidity, keeps steel balls in correct position, prevents ball offset during thrust loading.
• Standard ISO metric dimension, fully interchangeable with global 51205 thrust ball bearings, direct replacement without housing modification.
• Flat housing washer design for flat seat installation, no spherical self‑aligning function; housing seat must keep good perpendicularity to shaft axis.
• Rich custom options: P0/P6/P5 precision grade, special anti‑corrosion coating, OEM laser marking, neutral export anti‑rust carton, special‑temperature grease filling.

4. Application Scenarios

51205 single‑direction thrust ball bearing is separable rotary spare‑part for 25 mm‑shaft machinery under pure one‑way axial thrust load:

• Vertical pump and vertical centrifuge thrust support assemblies
• Lifting jack, hydraulic equipment axial positioning units
• Low‑speed heavy‑duty reducer thrust bearing positions
• Crane hook and hoisting machinery thrust support points
• Machine‑tool clamping devices, general‑purpose industrial machinery with one‑way axial force

Aftermarket interchangeable 51000‑series single‑direction thrust ball bearing
Heavy unidirectional axial‑load bearing solution for lifting‑equipment manufacturers, pump OEMs and industrial‑equipment bulk‑maintenance procurement.

5. Why Choose GQZ Bearing

• 25‑years manufacturing experience of 51000‑series thrust ball bearings including 51205.
• 51205 is dimension‑for‑dimension interchangeable with international‑standard counterparts, consistent axial load‑rating and dimensional tolerance standards.
• Complete OEM & ODM custom service covering multi‑precision‑grade, surface anti‑corrosion treatment and special‑temperature‑resistant grease filling.
• Strict pre‑shipment QC: GCr15 raw‑material metallurgy & hardness inspection, steel‑ball sorting, long‑cycle axial‑load rotation aging test, contact‑pattern inspection after assembly.
• Professional thrust‑bearing engineering team provides one‑on‑one axial‑load‑matching calculation and installation perpendicularity guidance within 24 working hours.
• Large‑scale production workshop offers competitive factory‑direct bulk‑wholesale price, stable long‑term supply for global lifting‑machinery, pump and general‑industrial‑machinery spare‑part buyers.
• We focus on separable single‑direction thrust ball bearings, strict raceway grinding quality control, ISO‑standard metric dimensions, pursuing win‑win long‑term cooperation with axial‑load industrial‑transmission‑equipment suppliers.

6. Quality Control

• Raw‑material chemical‑composition, internal‑defect and hardness inspection for GCr15 shaft‑washer, housing‑washer and steel‑ball blanks
• Precision turning, multi‑time stress‑relief tempering, ultra‑precision grinding for thrust raceway surfaces
• Steel‑ball high‑temperature quenching, mirror‑polishing and high‑precision auto‑sorting production‑line
• Stamped‑steel‑cage stamping‑riveting, component matching inspection, pre‑grease processing
• Targeted performance‑tests: 51205 long‑cycle axial‑thrust rotation aging test, static‑axial‑load anti‑fatigue wear‑detection
• Full re‑check for dimension‑tolerance, raceway surface‑finish and washer flatness before anti‑rust‑oil coating and export moisture‑proof‑carton packing.

Each production batch of 51205 undergoes thrust‑load simulation cyclic‑rotation test to guarantee stable heavy‑axial‑load support performance for 25‑mm‑shaft industrial‑systems.

7. Get A Quote Now

If you need 51205 25x47x15 single‑direction thrust ball bearings for lifting‑equipment / vertical‑pump manufacturing, machinery‑assembly and industrial‑equipment‑maintenance bulk‑matching, send your purchase‑inquiry directly.

Full professional supporting‑services after inquiry submission:

• Official formal quotation reply within 24 working‑hours
• One‑on‑one axial‑load‑matching calculation and thrust‑bearing installation technical‑support from professional‑bearing‑工程师
• Custom‑bearing‑performance‑upgrade options including multi‑precision‑grade and special‑temperature‑resistant‑grease
• Favorable factory‑direct bulk‑wholesale price for large‑volume 51205 single‑model‑orders

Please provide purchase‑quantity, working‑conditions (axial thrust load / low‑speed / vibration) and continuous‑operating‑temperature to get detailed official‑quotation‑documents.

8. FAQ