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  2. Shaft (mechanical engineering) - Wikipedia

    en.wikipedia.org/wiki/Shaft_(mechanical_engineering)

    25 mm to 60 mm with 5 mm steps; 60 mm to 110 mm with 10 mm steps; 110 mm to 140 mm with 15 mm steps; 140 mm to 500 mm with 20 mm steps; The standard lengths of the shafts are 5 m, 6 m and 7 m. Usually 1m to 5m is used.

  3. Olympic weightlifting - Wikipedia

    en.wikipedia.org/wiki/Olympic_weightlifting

    A men's Olympic barbell weighs 20 kg (44 lbs) with a shaft diameter of 28 mm and a length of 2200 mm, whereas a women's Olympic barbell weighs 15 kg (33 lbs) and has a shaft diameter of 25 mm with a length of 2010 mm. [20] [21] The distance between the sleeves, however, is the same for the men's and the women's bars at 1310 mm.

  4. Barbell - Wikipedia

    en.wikipedia.org/wiki/Barbell

    The International Powerlifting Federation requires using strictly the same kind of bar on all lifts, being between 28 millimetres (1.1 in) and 29 millimetres (1.1 in) in diameter, not more than 2.2 metres (7.2 ft) in overall length, and between 1.31 metres (4.3 ft) and 1.32 metres (4.3 ft) between the inner faces of the collars.

  5. Preferred metric sizes - Wikipedia

    en.wikipedia.org/wiki/Preferred_metric_sizes

    A standard metric (concrete) block is 190 mm wide, 390 mm long, and 190 mm high, which allows for 10 mm mortar joints in between bricks, giving a standard unit size of 200 mm square by 400 mm long. [3] A standard metric brick is 90 by 57 by 190 mm; with 10 mm of mortar, that produces a standard unit of 100 mm x 200 mm. [3]

  6. Dumbwaiter - Wikipedia

    en.wikipedia.org/wiki/Dumbwaiter

    A simple dumbwaiter is a movable frame in a shaft, dropped by a rope on a pulley, guided by rails; most dumbwaiters have a shaft, cart, and capacity smaller than those of passenger elevators, usually 45 to 450 kg (100 to 992 lbs.) [2] Before electric motors were added in the 1920s, dumbwaiters were controlled manually by ropes on pulleys.

  7. Engineering tolerance - Wikipedia

    en.wikipedia.org/wiki/Engineering_tolerance

    The actual amount bigger/smaller depends on the base dimension. For a shaft of the same size, h6 would mean 10+0−0.009, which means the shaft may be as small as 0.009 mm smaller than the base dimension and 0 mm larger. This method of standard tolerances is also known as Limits and Fits and can be found in ISO 286-1:2010 (Link to ISO catalog).

  8. Rolls-Royce LiftSystem - Wikipedia

    en.wikipedia.org/wiki/Rolls-Royce_LiftSystem

    Rolls-Royce LiftSystem. Instead of using separate lift engines, like the Yakovlev Yak-38, or rotating nozzles for engine bypass air, like the Harrier, the "LiftSystem" has a shaft-driven LiftFan, designed by Lockheed Martin and developed by Rolls-Royce, [3] and a thrust vectoring nozzle for the engine exhaust that provides lift and can also withstand afterburning temperatures in conventional ...

  9. Pallet jack - Wikipedia

    en.wikipedia.org/wiki/Pallet_jack

    Fork length: Available as 910, 1,070 and 1,220 mm (36, 42 and 48 in) [5] Lowered height: 74 mm (2.9 in) [5] Raised height: At least 190 mm (7.5 in), [5] but some will raise higher; In Eurasia the overall dimensions are similar, as modern container palletization has forced standardization in the dimensional domain globally.