Safety Chain Holder for Aluminium Chassis Boat Trailer Rails.
High Tensile, grade 8.8 bolts required but not included. Couplemate safety chain holders are welded to an 8mm plate.
Safety chain holders are available in two models:
- 10mm to suit trailers up to 2.5t
- 13mm suited to trailers from 2.5t to 3.5t (note, two pcs required)
Dee shackles or bow shackles are not approved for the attachment of safety chains to safety chain holders (on the trailer).
Conversely, dee / Bow shackles are approved for attachment of the safety chain to the tow bar only.
Regarding lengthening safety chains. Hammerlocks but not multiple dee shackles may lengthen chains.
Furthermore, dee shackles do not connect to the safety chain holder is the chain must not be detached from the chassis rail, under any circumstance. It is possible to detach the chain using dee shackles.
Also, once the safety chain holder has been installed and tensioned by your installer, it is installed for life or until such time the manufacturer decides the holder should be upgraded.
In the past, we have seen some pretty bad chain setups. As a result, we took time out to invent a simple solution to a critical problem.
You are required to weld the safety chain or safety chain holder to your chassis rail.
For example, it is not possible to weld steel brackets to aluminium trailers unless some innovative engineering is provided.
In the case of a welding chain directly to the trailer, the weld must cover 1/2 the link only. However, Aluminum chain is not permissible to use as safety chain.
In conclusion, the bracket holes to accommodate 6 x M8.8 high tensile bolts and 100mm of weld top and bottom. (notably: the photo is a prototype. The actual model has 200mm of weld per the regulations)