A Liebherr brochure graphically explains several items that routinely appear in wheel-loader specification sheets.
Tipping load, articulated is the most critical static-load position for a wheel loader. This figure is the load at which the machine just begins to tip over the front axle when it is fully articulated with boom horizontally positioned.
Payload, based on ISO standard 7546, says Liebherr, must not exceed 50 percent of the static, articulated tipping load.
Bucket capacity, expressed in cubic yards, is determined by dividing the allowable payload (in pounds) by the specific bulk weight of material (in pounds per cubic yard). These calculations likely are based on the heaviest materials the machine might handle, such as wet sand and gravel at nearly 3,400 pounds per cubic yard.