24h
Quote Response
48h
Emergency Ship
45+
Countries
This bearing is designed for high-load, high-shock and continuous-duty applications across the world's most demanding industries.
Swing drives, travel drives and boom cylinders. Handles extreme radial and axial loads under continuous shock loading in open-pit and underground mining.
Roll neck bearings, continuous casting machines and rolling mill stands. Resists high temperatures, heavy radial loads and water/scale contamination.
Main shaft, gearbox and yaw/pitch systems. Engineered for variable loads, high torque reversals and 20+ year design life in offshore environments.
Crane slewing rings, concrete mixer drives and heavy-duty wheel loaders. Designed for impact loads, dust ingress and extended maintenance intervals.
Propeller shafts, thruster drives and deck machinery. Corrosion-resistant sealing and high static load capacity for offshore platforms and heavy vessels.
Not listed? Our engineering team covers 45+ industries. Send your working conditions for a custom load-calc analysis.
Our in-house engineers apply ISO 281 / ABMA standards for equivalent dynamic load (P), adjusted life calculation (Lnm) and contamination factor (eC) -- optimized for your specific working conditions.
Formulas Applied
L₁₀ = (C/P)ᵖ × 10⁶ rev
Lnm = a₁ × aISO × L₁₀
P = X·Fr + Y·Fa
We diagnose premature failure root causes -- fatigue spalling, false brinelling, fretting corrosion, misalignment wear and seal failure -- and provide written technical reports with corrective action plans.
Timken proprietary steel alloys with controlled through-hardening and case carburizing. Surface hardness HRC 58-65, core toughness optimized for shock absorption in heavy-load cycles.
Raceway
HRC 60-64
Core
HRC 30-45
Steel Grade
52100 / M50
Cleanliness
EP / XL Grade
Recommended grease: NLGI Grade 2-3 lithium complex or polyurea for high-temperature applications. Relubrication interval calculated per Timken lubrication guide based on speed factor (ndm) and load ratio (C/P).
Shaft fit: k5/m5 (interference) for rotating inner ring. Housing fit: H7/JS7 for normal loads. Thermal or hydraulic mounting recommended for bore ≥ 80mm to prevent raceway damage during installation.
Designed to meet or exceed OEM service life targets under specified load and speed conditions, with proper lubrication and mounting.
Mining
20 000 h
Wind
175 200 h
Need A Load Calculation For Your Application?
Send working conditions -- our engineers respond within 24 hours with a full analysis.
As an official authorized Timken distributor, every bearing we supply carries complete origin documentation. We never source from gray markets or unauthorized channels -- your supply chain integrity is protected.
Every shipment includes Timken mill certificate, batch traceability code and country-of-origin documentation -- verifiable against Timken's official records.
Full-process quality control under ISO 9001 certification. Incoming inspection, storage management and outbound verification at every stage.
Documented authenticity failure or manufacturing defect within warranty period results in full replacement -- no questions asked. Failure analysis report provided at no charge.
Active Shipping Lanes
45+ Countries -- Direct Port Dispatch
Get a formal quotation with full traceability documents within 24 hours. Include your required quantity, delivery destination and any special requirements.
