TwinLock ™ Mechanism Design

The TwinLock™ jaw design is the industry’s quickest and most reliable fifth wheel to kingpin coupling lock mechanism, and is your best solution towards preventing a dropped trailer incident. The quick closing design of the lock jaws prevents coupling delay or failure caused by kingpin bounce out. 

Exclusive twin locks are built as one single piece of forged, machined, hardened steel then cut in half to create symmetrical locks that completely encompass the kingpin for enhanced assurance and reliability.

Solutions that are qualified for technologies
Technology Advantages

  • High coupling protection lock system that helps protect against coupling at an improper height
  • Much greater kingpin-to-lock contact area over competitive models for longer kingpin and lock life
  • Forged/Cast Steel Locks include a rear lock that is forged, hardened and machined steel and a front lock that is machined and hardened wear-resistant alloy
  • Precision machining of lock mechanism/kingpin interface

Other topics

Activities & Events
Future technologies at the IAA TRANSPORTATION 2024
SAF-HOLLAND focuses on safety and sustainability for commercial vehicles
Two SAF-HOLLAND Facilities Earn PACCAR 10 PPM Quality Award for 2023
Muskegon, Michigan, April 22, 2024 – SAF-HOLLAND, a leading global manufacturer of heavy-duty commercial vehicle components, has earned the PACCAR 10 PPM Quality Award for 2023 for its Woodstock, Ontario and Wylie, Texas locations. This is the sixth year that our Canadian manufacturing facility has received the sought-after award and it’s the first time for the Wylie, Texas facility to receive it.
Biodegradable lubricant for fifth wheel couplings
SAF-HOLLAND lubricates trailers in an environmentally friendly, economical and efficient way

SAF-HOLLAND count on the high-performance lubricant HOLLAND RECOLUBE BIOPOWER SKX 023 for its RECOLUBE lubricant pump.
Merger Plan
Merger Plan of SAF-HOLLAND Poland & Haldex Poland
Reliable identification of spare parts with NFC
SAF-HOLLAND turns smartphones into workshop assistants.

Axle, smartphone app and NFC chip – that is all that will be needed to quickly and reliably identify parts. For fast and reliable repairs, SAF-HOLLAND will be using the Near Field Communication (NFC) technology in its SH CONNECT app in the future, turning smartphones into workshop assistants
Ready for the future with smart trailers
SAF TrailerMaster: optimised processes for more economic efficiency.

The SAF TrailerMaster from the SAF-HOLLAND Group makes transport processes digital: The telematics system makes trailers smart, connects components and supplies digital data in real time. For fleet managers, the future-proof trailer management offers even more added value, as they can see the status of their entire fleet at a glance, manage it and evaluate maintenance procedures.