It's Multi-mesh
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IN'S range of Fuller transons has been redesigned the major difference being gearing which now incores the new Multi-mesh s is the Eaton name for ; which always have at least eeth in contact at any one With the earliest 1.5 to 1 ict ratio design, one tooth d carry the entire load for ?.r cent of the time that the ; were in contact.
e Multi-mesh gearing, 3ver – with a 2.2 contact – means that there are r fewer than two teeth Itaneously in contact and is as high as three at the -e point of rotation about ane tooth.
ton has also lowered the sure angle of each tooth to ce the bearing load for insed durability and in certain :al areas higher capacity ings are used.
the heavy duty Fuller gearis have been uprated in torcapacity to meet the growtrend towards low 1d/high torque power units this is reflected in the new tiering system where for nple the RT9509 is replaced he RT11609 – 950 lbft cornd with 1160 Ibft both with speeds.
:her improvements to the 3r range include an increase nainshaft diameter for the )0-Series gearbox and a new liter regulator unit which is r mounted directly to the smission and incorporates a ared bronze filter.
Compressed steel is now used for the synchroniser rings as Eaton has found that this material is insensitive to the sulphur in the oil arid holds the pins more secure than the previous bronze design.
The synchronisers are now covered with a polymeric coating known as Gylan which is fused to the metal surface and absorbs the small metal particles floating in the oil without damaging the synchroniser surface.
Eaton is claiming a significant reduction in gearbox noise with the new Fuller range with the average being 5dBA although the reduction from the 9509 to the new 11609 is as high as 8.5 dBA measured under test cell conditions.