VIIPLUS Bearing Life & Material Selection

Theoretical Service Life & Material Diagnostic System

Step 1: Material & Specs
Note: For submerged water, PTFE reduces friction by ~40%.
mm
Step 2: Operating Conditions
N/mm²
m/min
Engineering Analysis Report
* Note: Range represents theoretical extremes based on standard formulas. Material wear factors applied.

Important Disclaimer

Bearing life is a theoretical estimate based on wear formulas and material properties. Actual service life depends heavily on real-world duty cycles, specific lubrication regimes, and heat dissipation. Calculations assume limits are not exceeded.

📞 Need Expert Selection? Contact our VIIPLUS bearing engineers for custom material evaluation.

VIIPLUS SOLUTIONS ®️ | Cast Bronze Bearings With Graphite Selection System
Contact us to select different materials: viiplus@viiplus.com | Authorized Technical Document

Material Selection & Engineering Guide

Based on VIIPLUS cast bronze alloys. Reference guide for engineers.

JDB650

CuZn25Al5Mn3Fe3 (High strength)
Max Load: 100Max PV: 200
Application: High load, low speed, general industrial use. Excellent wear resistance.
🌡️ -40°C ~ +300°C

JDB650S1

CuSn5Pb5Zn5 (Tin bronze)
Max Load: 60Max PV: 60
Application: Medium load, low speed, good for oscillating movements.
🌡️ -40°C ~ +400°C

JDB650S4

CuAl10Fe3 (Aluminum bronze)
Max Load: 150Max PV: 60
Application: Medium load, medium speed, corrosion resistant. Ideal for hydraulics.
🌡️ -40°C ~ +400°C

JDB650S5

High strength CuZn25Al5Mn3Fe3
Max Load: 150Max PV: 200
Application: Ultra-high load, low speed, heavy earth-moving equipment.
🌡️ -40°C ~ +300°C

CuSn12

High Tin Bronze
Max Load: 70Max PV: 80
Application: Medium load, low speed. Offers better load capacity and wear resistance than standard tin bronze.
🌡️ -40°C ~ +400°C

JDB(HT250)

Gray Cast Iron
Max Load: 80Max PV: 40
Application: Economical choice for medium load, low speed, where extremely low friction is not critical.
🌡️ -40°C ~ +400°C

Gcr15

Bearing Steel (Hardened)
Max Load: 200Max PV: 150
Application: Very high load, extremely low speed, high precision heavy-duty applications.
🌡️ -40°C ~ +400°C

Typical Application & Expected Life Matrix (JDB-650 Base)

Industry / Application Typical Component & Motion Load (N/mm²) Speed (m/min) PV Value Expected Life Range (h)
Construction Mach. Excavator/Crane joints (Low speed, heavy load) 30 ~ 60 1 ~ 5 30 ~ 300 5,000 ~ 50,000+
Metallurgical Equip Casting/Rolling mill bearings (High temp, dusty) 20 ~ 50 5 ~ 15 100 ~ 750 1,500 ~ 8,000
Injection Molding Mold clamping / Toggle pins (Oscillating) 15 ~ 35 5 ~ 25 75 ~ 875 1,200 ~ 12,000
Hydraulic Equip Cylinder trunnion / Guide bushes (Oscillating) 20 ~ 45 3 ~ 10 60 ~ 450 3,000 ~ 15,000
Mining Machinery Suspension / Crusher components (High impact) 40 ~ 70 2 ~ 8 80 ~ 560 2,000 ~ 20,000
Marine / Hydro Turbine guide vane / Gates (Submerged) 10 ~ 30 2 ~ 12 20 ~ 360 15,000 ~ 60,000
General Machinery General industrial bearings (Mid load, mid speed) 10 ~ 25 5 ~ 20 50 ~ 500 5,000 ~ 25,000

⚙️ Matrix Estimation & Life Calculation Logic

Wear Depth (W) = K × P × V × T   ➔   Life (T) = W / (K × PV)

  • W (Wear Limit): Standard engineering replacement threshold set at 0.5mm.
  • Material Wear Factor: The calculator applies unique wear multipliers based on the alloy's hardness. For example, Gcr15 bearing steel outlasts standard Cast Iron under identical PV conditions.
  • High PV Boundary: When PV > 200, equations assume supplementary grease/fluid lubrication. Pure dry friction at extreme PV leads to instantaneous thermal seizing, rendering theoretical calculations void.
VIIPLUS SOLUTIONS ®️ | Cast Bronze Bearings Selection System
Contact us to select different materials.