MSB Flintec
26 November 2014
Load cell mounting bracket installation methods differ depending upon whether the supporting structure is a truck
chassis or a trailer suspension subframe. Truck chassis frames are manufactured from heat treated high strength steel,
requiring load cell mounting angles or brackets to be bolted to these frames. Trailer subframes however, are not heat
treated and mounting brackets can be welded to these frames.
CAUTION: Review truck or trailer body or chassis manufacturer’s recommendations before welding to frame.
Bolting Requirements:
The structural requirements for the load cell mounting brackets are affected by the actual weight being supported by
the load cells and by dynamic service factors caused by road conditions. Bolted load-carrying brackets are susceptible
to slippage if the proper number of bolts are not used or if the bolts are not tightened to the recommended torque. Use
the following chart to determine the proper number of bolts for bolted installations. Refer to the chart on page 12
for the
recommended torque values when tightening.
For in-line installations, use the bolting recommendations for highway use regardless of road condition.
Frame Rail Inspection: Inspect the frame rails to ensure they are clean, straight and free of cracks, corrosion, pitting, burrs or
any other imperfections that may affect the installation and fit of the mounting angles/brackets, or the strength of the frame.
Mounting Bracket/Angle Installation: Set the mounting angles (for in-line installations) or mounting brackets (for outboard
installations) in place on the frame rails. Determine if and where they must be cut or contoured to allow clearance for
existing bolts, rivets, spring hangers, etc., on the frame. Mark these locations on the mounting angles/brackets, allowing
for a minimum 25 mm (1") radius -no sharp corners. Remove angles/brackets, trim as required, and grind edges smooth.
NOTE: It is not necessary to cut out load cell mounting angles and brackets for easily removed items such as fuel tanks,
battery boxes, etc. These items are simply repositioned or spaced out to conform to the added thickness of the load cell
mounting angles/brackets.
7
Number of bolts used
- Top and
Bottom brackets
Maximum load on load cells -
normal highway use
DSB7 7.5t
(16500 Lbs)
M12-1.75
DSB7 7.5t
(16500)
1/2" (0.5")
DSB7 15t
(33000)
M16-2
DSB7 15t
(33000)
1/2" (0.5")
3
5,000 kg
11000 Lbs
5,000 kg
11000 Lbs
4
7,500 kg
16500 Lbs
10,000 kg
22000 Lbs
5
7,500 kg
16500 Lbs
15,000 kg
33000 Lbs
6
N/A
N/A
15,000 kg
33000 Lbs