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The standard rail weight for British railways is now 113 lb/yd (56.1 kg/m). Before the 1990s, most diesel locomotives were built to a maximum axle load of 19 long tons (19.3 tonnes; 21.3 short tons) so the maximum locomotive weight was 76 long tons (77.2 tonnes; 85.1 short tons) for a four-axle locomotive and 114 long tons (115.8 tonnes; 127.7 short tons) for a six-axle one.
Each standard tracked vehicle is also defined in terms of track width, length, and spacing. Standard wheeled vehicles are designated by the same MLC numbers (4 through 150), which correspond to about 85% of the gross weight in short tons. Each standard wheeled vehicle is defined in terms of gross weight, number of axles, axle spacing, and axle ...
Class 14 No. D9526 (as preserved) at Williton on the West Somerset Railway a low axle load and less limited RA of 4. Class 01 shunter 01002 inside the shed at Holyhead Breakwater. The withdrawn loco 01001 is just visible at the rear. They had an RA of 1, and thus had the fewest axle load related restrictions put upon them.
The typical 5-axle tractor-trailer combination, also called a "semi" or "18-wheeler", is a Class 8 vehicle. [30] Standard trailers vary in length from 8 ft (2.4 m) containers to 57 ft (17 m) van trailers, with the most common length being the 53 ft (16 m) trailer. [31] Specialized trailers for oversized loads can be considerably longer.
The M939 series uses 11:00 R20 tires with two tires per side per axle in the rear (rear tandem duals). This allows a heavy load to be carried on improved roads and most US trucks in the past have used them. The M939A1 and M939A2 series instead use oversized 14:00 R20 tires with a single tire on each side per axle, still with a tandem setup.
Gross Axle Weight Rating (GAWR) 6500 lbs (full float, rear axle) 5500 lbs (semi float) GAWR is vehicle axle weight plus rated payload capacity; Ring gear diameter: 9 3 ⁄ 4 " Axle shaft diameter 1.41” Front (32 spline) 1.46” Rear (32 spline) 1.50” Front (35 spline) 1.50” Rear (35 spline) Inner axle shaft splines: 16, 23, 30, 32, 33 or 35
The Dana/Spicer Model 80 is an automotive axle manufactured by Dana Holding Corporation and has been used in OEM heavy duty applications by Chevrolet, Dodge, and Ford.It can be identified by its straight axle tubes, 10 bolt asymmetrical cover, and a "80" cast into the housing.
A conventional ladder frame has a front steering axle with a 12,000 lb (5,400 kg) weight rating and tandem rear axles with a 40,000 lb (18,000 kg) weight rating. The truck can have a maximum weight of 52,000 lb (24,000 kg), including a 30,000 lb (14,000 kg) load. The total weight rating of the truck and trailer is 105,000 lb (48,000 kg).