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Application Guide

How load and temperature guide gear oil selection

Gear oil selection should consider gearbox type, load, speed, temperature, shock load and EP additive requirements together.

Problem

Wrong oil selection in enclosed gearboxes, reducers and heavy-load transmission systems may cause wear, pitting, overheating and early failure.

Selection criteria

Low speed and high load may require higher viscosity. High speeds or hot operation may suffer from excessive viscosity, energy loss and overheating.

EP gear oils may be preferred for heavy load, low speed or shock load, but not every system requires EP additives.

Checklist

  • Reducer or gearbox type
  • Gear type: helical, bevel, worm or open gear
  • Operating speed
  • Load level and shock load
  • Oil and ambient temperature
  • OEM recommended ISO VG grade
  • EP additive requirement
  • Seal, paint compatibility and maintenance history

Technical support call

Final selection should be validated with the current technical data sheet and OEM instructions.

Let us define the right product for your application

Share machine type, operating temperature, current oil and OEM recommendations; our technical team can help with the right product group and documents.

This content is prepared for preliminary technical guidance before product selection. Final selection should be confirmed with OEM instructions, current technical data sheets and field conditions.