Pressure angle 25 degrees. Earlier gears with pressure angle 14.5 were commonly used because the cosine is larger for a smaller angle, providing more power transmission and less pressure on the bearing; however, teeth with smaller pressure angles are weaker. To run gears together properly their pressure angles must be matched. The pressure angle is also the angle of the sides of the trapezoidal teeth on the corresponding rack. The force transmitted during the mating of gear teeth acts along the normal. This force has components along the pitch line and the other along the line perpendicular to the pitch line. The
Less than truckload shipping different people's shipments on a trailer and since each shipment is technically “less than a truckload” they would consider that to be LTL. There are also freight companies who do not specialize in truck loads, but rather, consolidate larger volume shipments from about 2 to 12 pallets (or about 4000 to 24000 pounds) and consider themselves LTL Carriers. Finally, the most commonly referenced LTL is shipped via “common” carriers who handle freight above what would normally ship via FedEx Ground, or UPS or U.S. Mail parcel services (about 150 pounds) to just under what would usually be considered a Truck