HOLLAND Double Spool Series
HOLLAND Double Spool Series
Double Spool Kingpins are a widely used weld-in model that continues to pass the test of time.
This kingpin has models for AAR (American Association of Railroads) applications, and also for non-AAR applications.
AAR models, when properly installed, meet or exceed the performance requirements of the America Association of Railroads (AAR) standard M-931, Truck and Trailer Manufacturers Association (TTMA), and the Society of Automotive Engineers (SAE).
Non-AAR models when properly installed, meet or exceed the performance requirements of the Truck and Trailer Manufacturers Association (TTMA), and the Society of Automotive Engineers (SAE).
Specifications:
Material: SAE - AISI 8630H Alloy Steel
AAR - AISI 4320H and 4718H
Hardness: SAE - 302-363 BHN
AAR - 380-420 BHN
Quality: Manufactured to a proprietery standard for both
surface and interior sound, and for dimensional
accuracy.
Kingpin Gage TF-0110
The HOLLAND Kingpin Gage is a simple, multi-purpose, economical gage for indicating undersized 2' and 3-1/2' SAE kingpins in need of replacement. This unique gage can also be used to check kingpin length, and for checking the straightness and flatness of the upper coupler or bolster plate.