Backlash

The principle of the Rockwed hardness test is that the depth of the indentation between a minor and a major load appHed through an indenter is inversely proportional to the hardness number. Using a minor load to set the indenter helps to reduce backlash in the measuring system. 

Impact torque. A function of system looseness or backlash. Generally, mechanical-joint flexible couplings have inherent backlash. 

Leer-fass, n. (Paper) emptying vat. -gang, -lauf, m. (Mack.) idle motion, running without load, also backlash, -gewicht, n. weight empty, tare. 

Spiel, n. play, playing clearance (Mach.) working action cycle backlash game, sport pack (of cards), -art, /. variety variant (Biol.) sport. 

Spiel-raum, m. play latitude, margin, elbow-room tolerance backlash, -waren, f.pl. toys, -warenlack, m. varnish for toys, -zeug, n. pla3 hing, toy. 

Linked square port valve. This system has a more linear relationship between flow rate and rotation than butterfly valves. There is no backlash, as the air and gas valves are on a common spindle and fine-tuning is possible. 

The primary performance criteria for gear sets include efficiency, brake horsepower, speed transients, startup, backlash, and ratios. 

Gear backlash is the play between teeth measured at the pitch circle. It is the distance between the involutes of the mating gear teeth, as illustrated in Figure 39.17. 

During the gear-manufacturing process, backlash is achieved by cutting each gear tooth thinner by an amount equal to one-half of the backlash dimension required for the application. When two gears made in this manner are run together (i.e., mate), their allowances combine to provide the full amount of backlash. 

The increase in backlash that results from tooth wear does not adversely affect operation with non-reversing drives, or drives with continuous load in one direction. However, for reversing drives and drives where timing is critical, excessive backlash that results from wear usually cannot be tolerated. 

Linear and circular measurements that define gears and are used in their specification and design are center distance, offset, pitch diameter, diametric pitch, axial pitch, base pitch, and axial base pitch, lead, and backlash. 

A significant difference (above that expected from the counting error) between the up and down errors would point to backlash in the adjustment drum. Although there is a difference, as Table 10-6 shows, the E-test16 shows that this difference has a low level of significance. 

Background spectrum, tungsten, copper, and nickel lines in, 229 Backlash, error due to, 285-287 Bank notes, histograms from x-ray spec-trographic chart recordings of, 225-227... 

Our device includes the 5 column reactors, 5-channels peristaltid pump (ppl-05, Poland) and ultra-thermostat U-l (Germany). In the work space between the internal tube of thermostat (5) and external reactor case (6) water is filled by a backlash (17) in the top part of the module (fig.l). 

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