XL-PH10397SG - saf-holland
XL-PH10397SG - saf-holland
XL-PH10397SG - saf-holland
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Operating Conditions/Cushioning Systems<br />
Operating Conditions<br />
Off-Road / Rough Terrain Applications<br />
Reduction in Rated Capacities<br />
For off-road and rough terrain applications, the rated<br />
capacities (MGTW and Maximum Vertical Load) of the<br />
coupling devices for both the tow and towed vehicles<br />
should be reduced by a minimum of 25% to accommodate<br />
the increase in dynamic loading.<br />
Example – A pintle hook rated at 100,000 lbs. (45,360 kg)<br />
MGTW and 20,000 lbs. (9,070 kg) maximum vertical load<br />
would, for off-road applications, be rated at 75,000 lbs.<br />
(34,020 kg) MGTW and 15,000 lbs. (6,800 kg) Maximum<br />
Vertical Load.<br />
Articulation<br />
Maximizing the range of articulation between the drawbar<br />
eye of the trailer and the coupling device of the tow vehicle<br />
is critical for good off-road performance. Holland pintle<br />
hooks are designed for maximum articulation with Holland<br />
drawbars. Other considerations include:<br />
• A swivel-mount coupler/pintle hook or swivel-mount<br />
drawbar can further enhance articulation in offroad<br />
applications. The swivel-mount feature provides<br />
rotation to help prevent binding between the drawbar<br />
eye, coupler or pintle hook. Note however that you<br />
should never use a swivel-mount coupler/pintle hook<br />
with a swivel-mount drawbar. The two swivel-mount<br />
components could lead to over-rotation of the coupling<br />
device.<br />
• It is important to coordinate the size of the drawbar<br />
eye with the mating component of the coupler or pintle<br />
hook. Proper sizing will allow for optimum articulation<br />
of the coupling system when driving over uneven<br />
terrain. Reference Drawbar Compatibility Chart on pages<br />
42 – 43 for assistance in the selection process.<br />
Cushioning Systems<br />
Holland cushioning (shock absorption) systems include:<br />
• Rubber Mount<br />
Absorbs shock loads from hard coupling, vehicle launch<br />
and braking (reference Holland products PH-990,<br />
DB-1407-S, and DB-1407-SE).<br />
PH-990ST71<br />
• Steel Spring<br />
Absorbs shock loads during vehicle launch and<br />
acceleration (reference Holland products PH-30SA and<br />
PH-30SB).<br />
PH-30SA41<br />
DB-1407-S<br />
• Pneumatic Snubber<br />
For vehicles equipped with air systems, a snubber<br />
with force supplied by an air service chamber helps to<br />
minimize ‘free play’ or ‘slack’ between the drawbar eye<br />
and coupling device as well as absorbing shock loads<br />
during deceleration and braking (Reference Holland<br />
products PH-210, PH-300(R), PH-310, PH-400(H), PH-<br />
410, PH-419, PH-550, and DB-1400AC).<br />
PH-775SL11 NoLube<br />
PH-210<br />
DB-1400AC<br />
DB-610-30<br />
<strong>XL</strong>-<strong>PH10397SG</strong>-en-US Rev C 02-2013<br />
Amendments and errors reserved. © SAF-HOLLAND, Inc.<br />
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