Description / Abstract:
The gear lubricants covered by this standard exceed American
Petroleum Institute (API) Service Classification API GL-5 and are
intended for hypoid type, automotive gear units, operating under
conditions of high-speed/shock load and lowspeed/ high-torque.
These lubricants may be appropriate for other gear applications
where the position of the shafts relative to each other and the
type of gear flank contact involve a large percentage of sliding
contact. Such applications typically require extreme pressure (EP)
additives to prevent the adhesion and subsequent tearing away of
material from the loaded gear flanks. These lubricants are not
appropriate for the lubrication of worm gears.
Appendix A is a mandatory part of this standard. The information
contained in Appendix A is intended for the demonstration of
compliance with the requirements of this standard and for listing
on the Qualified Products List (QPL) administered by the Lubricant
Review Institute (LRI). Appendix A contains a summary of key
qualification requirements. A complete listing of qualification
requirements and procedures can be found in the Program Document
(PD4000) – Gear Lubricant Review Program available from the
Performance Review Institute, Attn: Secretary of the LRI, 161 Thorn
Hill Road, Warrendale, PA 15086, (724) 772-1616 or at
www.pri-network.com.