Solid shaft drivers are used to drive pumps with relatively short shafts, less than 30 to 50 ft long. They therefore are used to drive almost all process pumps and circulators. They provide more positive shaft alignment which is especially important when the pumps have mechanical seals rather than packing.
What is the difference between solid shaft and hollow shaft?
A hollow shaft is a low weight than a solid shaft for the same torque transmission. In the hollow shaft, the internal shape is hollow so the materials required are less. The shaft is more strong and it has a low failure chance. The power loss due to loose coupling. Shafts can vibrate during rotation. Maintenance and manufacturing costs were high.
What is the opposite of a solid shaft?
The opposite, in a manner of speaking, of a solid shaft is a hollow shaft. A solid shaft is a power transmission linkage, typically used for transferring rotational power, wherein the linkage is devoid of intentional hollows or occlusions.
What is a shaft?
What is a Shaft? A shaft is defined as a rotating machine element, usually circular in cross-section, which is used to transmit power from one part to another, or from a machine that produces power to a machine that absorbs power. Shaft form the important element of machines.
What is a solid shaft linkage?
A solid shaft is a power transmission linkage, typically used for transferring rotational power, wherein the linkage is devoid of intentional hollows or occlusions. In slight contrast to the answer given by Rob Lion, there are some solid shafts where the interior and exterior are dissimilar - for example nickel-plated steel.
What is the opposite of a solid shaft?
What is a straight shaft?
What is the role of shafts in a machine?
What is a hollow shaft?
Which is stronger, a hollow shaft or a solid shaft?
Which shaft has more weight?
What is shaft mining?
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Is hollow or solid shaft better?
The hollow shafts are lighter and provide more stiffness than the solid shaft of the same weight, thus hollow shafts are better than the solid shafts.
What is the difference between hollow shaft and solid shaft?
The hollow shaft contains the same amount of material all at the ends if hollow and a solid shaft are of the same weight whereas in the solid shaft distributed the material is uniformly throughout the shaft leaves little material at the ends.
Which is stronger hollow shaft or solid shaft?
A hollow shaft is found to be stronger than a solid shaft made of equal material because the torque required to produce a given twist in hollow cylinder is greater than that required to produce in solid cylinder of same length and material through same angle.
What is a hollow shaft?
The hollow shaft constitutes an essential component of the hollow shaft motor, which is used in electrically powered vehicles, such as trains. Hollow shafts are also suitable for the construction of jigs and fixtures as well as automatic machines.
Where are solid shafts used?
Solid shaft drivers are used to drive pumps with relatively short shafts, less than 30 to 50 ft long. They therefore are used to drive almost all process pumps and circulators. They provide more positive shaft alignment which is especially important when the pumps have mechanical seals rather than packing.
Which shaft is more efficient?
Answer (Detailed Solution Below) Option 2 : the strength of hollow shaft is more than that of solid shaft.
What are the disadvantages of hollow shaft over solid shaft?
Hollow will be much stiffer than the same weight solid shaft. Hollow shaft natural frequency will be higher than the solid shaft with the same weight. Hollow shaft manufacturing is costlier than the solid shaft production.
What are the advantages of using a hollow shaft over solid shaft?
Hollow shafts are much lighter than solid shafts and can transmit same torque like solid shafts of the same dimensions. Moreover less energy is necessary to acceleration and deceleration of hollow shafts. Therefore hollow shafts have great potential for use in power transmission in automotive industry.
What are the types of shaft?
They are mainly classified into two types.Transmission shafts are used to transmit power between the source and the machine absorbing power; e.g. counter shafts and line shafts.Machine shafts are the integral part of the machine itself; e.g. crankshaft.Axle shaft.Spindle shaft.
Why shafts are always circular?
Generally for power transmission, circular shafts are used because there is uniform stress distribution along any radius of the shaft. Plane sections of shaft remain plane after the application of twisting moment, as a result there is no distortion in the sections of shafts and change in volume of the shaft is zero.
What is a through shaft?
A through-shaft design is one in which the position of the top of the shaft is less restricted; it can be inserted all the way through the stirrer head, providing a wide vertical range at which the impeller can be positioned.
Why hollow cylinders are used in shafts?
A hollow shaft is found to be stronger than a solid shaft made of the same size and material. Reason: The torque required to produce a given twist in a hollow cylinder is greater than that required to twist a solid cylinder of the same size and material.
What are the advantage of hollow shaft over solid shaft?
Hollow shafts are much lighter than solid shafts and can transmit same torque like solid shafts of the same dimensions. Moreover less energy is necessary to acceleration and deceleration of hollow shafts. Therefore hollow shafts have great potential for use in power transmission in automotive industry.
Why hollow shaft is not used?
Hollow shaft natural frequency will be higher than the solid shaft with the same weight. Hollow shaft manufacturing is costlier than the solid shaft production. Hollow shafts have a more polar moment of inertia, which enables them to transmit more torque than solid shafts.
What is the structural advantage of a hollow tube vs a solid rod?
And, it's a common myth that a solid rod bends easier than a hollow tube of the same material. Fact is, given the same material, a solid rod is stronger in all respects than a hollow tube of the same material.
What are the types of shaft?
They are mainly classified into two types.Transmission shafts are used to transmit power between the source and the machine absorbing power; e.g. counter shafts and line shafts.Machine shafts are the integral part of the machine itself; e.g. crankshaft.Axle shaft.Spindle shaft.
Why are solid shaft drivers important?
They provide more positive shaft alignment which is especially important when the pumps have mechanical seals rather than packing. However, when a solid shaft driver is used, the axial adjustment of the pump rotor is limited by the height of the adjusting plate in the three-piece or four-piece coupling.
When a solid shaft is loaded on the external surface, the constants A and C must vanish to avoid the?
When a solid shaft is loaded on the external surface, the constants A and C must vanish to avoid the singularity condition at r = 0. Hence σrr = σθθ = 2 B. That is uniform tension, or compression over the cross section.
What are flanges and shoulders?
Flanges and shoulders are virtually identical integral geometric features of a part that allow that part to be joined to and locked with another part using either bolts and nuts or clamping rings. Normally found on cylindrical solid or hollow shafts or thick-walled pipes, both flanges and shoulders create a circumferential protruding ridge of diameter larger than the shaft or pipe through which bolts (for example) can be installed or over which a spring-type clamping ring can be applied. Flanges are always located at the end of a shaft or pipe, while shoulders are located elsewhere along the length of a shaft or pipe. Flanges tend to be used to join one shaft or pipe to another end-to-end but can also be used to attach an end cap (e.g., head) or other part. Shoulders tend to be used to allow the attachment of some other part to a shaft or pipe or as a structural feature for supporting the shaft or pipe.
What is the yield point of a 40 mm shaft?
3.32 (B). A solid shaft 40 mm diameter is made of a steel the yield point of which in shear is 150 MN/m 2. After yielding, the stress remains constant for a very considerable increase in strain. Up to the yield point the modulus of rigidity G = 80 GN/m 2. If the length of the shaft is 600 mm calculate:
Is a perfectly aligned shaft colinear?
Two perfectly aligned shafts are colinear and operate as a solid shaft when coupled. This condition is illustrated in Figure 54.1. However, it is extremely rare for two shafts to be perfectly aligned without an alignment procedure being performed on them. In addition, the state of alignment should be monitored on a regular basis in order to maintain the condition of perfect alignment.
Is low speed a high torque?
In general if speed can be varied, low speed is equivalent to high torque and vice versa for a given power transmission duty. High torque transmissions necessitate larger diameter shafts.
Does misalignment exist between shafts?
Generally, we assume that misalignment exists between shafts that are connected by a coupling, V-belt, or other intermediate drive. However, it can exist between bearings of a solid shaft and at other points within the machine. How misalignment appears in the vibration signature depends on the type of misalignment.
What is a Shaft?
A shaft is defined as a rotating machine element, usually circular in cross-section, which is used to transmit power from one part to another, or from a machine that produces power to a machine that absorbs power.
What is a straight shaft?
The shafts are classifieds as straight, cranked, flexible, or articulated. Straight shafts are the commonest to be used for power transmission.
What is a spindle shaft?
A spindle shaft is a rotating shaft with a fixture for holding a tool or a workpiece.
What is shaft in a spear?
A shaft is a rotating machine element with a long handle of a spear or similar weapon, usually circular in cross-section, which is used to transmitting power from one rotating member to another supported by it or connected to it.
What is hollow shaft?
A hollow shaft is a low weight than a solid shaft for the same torque transmission.
Why do shafts have torque?
Thus, they are subjected to torque due to power transmission and bending moment due to reactions on the members that are supported by them.
What is transmission shaft?
Transmission shafts are used to transmit power between the source and the machine absorbing power. e.g., countershafts, line shafts, and all factory shafts.
What is shaft?
A shaft is a rotating machined element used to transmit power from the source of the machine to other parts of the machine. The shaft is generally circular in cross-section. It is one of the essential parts of any machine. Because without shafts, the machine will not be going to transmit power.
What is shaft in machine?
A shaft is a rotating machine element used to transmit power from one part of the machine element to another part of the machine or from a power-producing machine to a power absorbing machine. The shaft is generally circular in cross-section.
What is the type of shaft that supports the rotating element like a wheel, which fits in housing with bearing?
The axle is the type of shaft that supports the rotating element like a wheel, which fits in housing with bearing. The axle is the non-rotating element.
What is the end working process of a lathe?
In this process, one end of the shaft is loaded on the check & the other end is supported with the turret of the lathe machine.
Why is a transmission shaft rigid?
The transmission shaft is said to be rigid on the basis of torsional rigidity basis if it does not twist too much.
What is a step shaft?
Stepped shafts are for mounting different gears or hubs to transmit power. With every step, its diameter changes with the length.
What is the spindle part of a machine?
3. Spindle- It is a rotating part of the machine for clamping workpieces.
What are the disadvantages of a solid shaft?
2. It must be perfectly straight from the manufacture. A slight imbalance is not tolerable and very hard to deal with. 3. High rotational inertia especially on larger diameters. 4. On application where the shaft is exposed to very high temperatures, solid shaft made of mild steel bends even at rest.
Why is it better to use a hollow shaft or a solid shaft?
For a load-bearing type of shaft, then its always better to choose a hollow shaft because it has higher stiffness and rigidity and can resist slightly higher bending moments. A shaft for torque transmission like crankshafts, drive shafts it is always better to choose a solid shaft because it has higher torsional stiffness.
What is hollow shaft?
1. Lightweight comparable to the solid shaft of the same diameter.#N#2. Low rotational inertia.#N#3. Cheaper.#N#4. High tolerance to rotational imbalance due to low weight.#N#5. Also, hollow shafts are tolerant to high temperature because of low specific mass.
What to consider before selecting a shaft?
Before Selection of Shaft you must be considered whether to choose hollow shaft or Solid Shaft depending upon the type of application, power Requirement, torque transmission requirement, weight, cost, machining time, Material.
Why is a hollow shaft more expensive than a solid shaft?
Cost Consideration: Cost of Hollow shaft is more than solid shaft because of machining is needed for hollow shaft which is time-consuming. Hollow shaft exhibits high resistance to stresses while the solid shaft may tend to fracture at a certain limit.
How much does a hollow shaft increase critical speed?
Vibration: Natural frequency of hollow shafts differ from solid shafts. Typically, a hollow shaft can increase the critical speed about 20% compared to a solid shaft.
Can you affix hollow shafts?
Assembly: Sometimes, it is simpler to affix the appropriate ends to a hollow shaft for custom length shafts, similar to RWD vehicle drivelines. One could stock tube and the end pieces, cut the tube to whatever length is needed, and attach the ends. This can be simpler for some shops and applications than building a custom solid shaft.
Which shaft you should choose? Hollow shaft or Solid shaft?
For structural applications like a Rollcage of offroad vehicles, the hollow shaft is better than the solid shafts because it can beat the same loads as a solid shaft for lesser weight.
Example problem to compare Hollow Shaft with Solid shaft of Same diamter
Compare the weight, strength, and stiffness of a hollow shaft of the same external diameter as that of a solid shaft. The inside diameter of the hollow shaft is half the external diameter. Both the shafts have the same material and length.
Conclusion
A hollow shaft is not always better than a solid shaft. but the Hollow shaft has very serious advantages over the solid shaft which we need to consider. That is the reason we think that the hollow shaft is better than the solid shaft for many applications.
What is shaft in engineering?
• A shaft is a rotating member, usually of circular cross section, used to transmit power or motion.#N# • It provides the axis of rotation, or oscillation, of elements such as gears, pulleys, flywheels, cranks, sprockets, and the like and controls the geometry of their motion.#N#• Carbon steels of grade 40C8, 45C8, 50C4, 50C12 are normally used as shaft materials.
What is the G of a shaft?
G = Modulus of rigidity of the shaft material. The calculations need the modulus of rigidity of the material that makes up the shaft. This varies depending on the material, and the values of G for many kinds of materials can again be found in charts in design handbooks and from manufacturers.
What is stress analysis in shaft design?
• Stress Analysis#N#– In design it is usually possible to locate the critical areas, size these to meet the strength requirements, and then size the rest of the shaft to meet the requirements of the shaft-supported elements.# N#• Deflection and Slope#N#– They are a function of inertia. Inertia is a function of Geometry. For this reason, shaft design allows a consideration of stress first. Then, after tentative values for the shaft dimensions have been established, the determination of the deflections and slopes can be made.
What is shaft inertia?
Inertia is a function of Geometry. For this reason, shaft design allows a consideration of stress first. Then, after tentative values for the shaft dimensions have been established, the determination of the deflections and slopes can be made.
What is slot machine?
Introduction to Slotting Machine : The slotter or slotting machine is also a reciprocating type of machine tool similar to a shaper. It may be considered as a vertical shaper. The machine operates...
What is Sachin's degree?
Sachin is a B-TECH graduate in Mechanical Engineering from a reputed Engineering college. Currently, he is working in the sheet metal industry as a designer. Additionally, he has interested in Product Design, Animation, and Project design.
What is the opposite of a solid shaft?
The opposite, in a manner of speaking, of a solid shaft is a hollow shaft. A solid shaft is a power transmission linkage, typically used for transferring rotational power, wherein the linkage is devoid of intentional hollows or occlusions. In slight contrast to the answer given by Rob Lion, there are some solid shafts where ...
What is a straight shaft?
The shafts are classifieds as straight, cranked, flexible or articulated. Straight shafts are commonest to be used for power transmission. Such shafts are commonly designed as stepped cylindrical bars, that is, they have various diameter along their length, although constant diameter shafts would be easy to produce. The stepped shafts correspond to magnitude of stress which varies along the lenght. Moreover, the uniform diameter shafts are not compatible with assembly, disassembly and maintenance such shafts would complicate the fastening of the parts fitted to them, particularly the bearings, which have restricted against sliding in axial direction. While determining the form of stepped shaft it is borne in mind that the diameter of each cross-section should be such that each part fitted on to the shaft has convenient access to its seat.
What is the role of shafts in a machine?
The shafts perform the function of transmitting power from one rotating member to another supported by it or connected to it . Thus, they are subjected to torque due to power transmission and bending moment due to reactions on the members that are supported by them. Shafts are to be distinguished from axles which also support rotating members but do not transmitt power.
What is a hollow shaft?
A hollow shaft is simply a shaft with nothing on the inside; like a pipe. A pipe and a hollow shaft are really the same thing. The only difference is that when we say "pipe," we tend to assume that we are using it to flow something through it. When we say "hollow shaft" we are normally using it to transmit forces.
Which is stronger, a hollow shaft or a solid shaft?
the hollow shaft has more material at the ends to bear the high compressive and tensile stresses and is thus stronger than the solid shaft.
Which shaft has more weight?
Hollow shaft are light in weight and it has more strength than solid shaft which has more weight . Hollow shaft used in motor vehicle as a propeller shaft. And solid shaft used for reinforcing the material.
What is shaft mining?
Shaft mining, the method of excavating a vertical or near-vertical tunnel from the top down, where there is initially no access to the bottom. Shafting, illicit travelling through shafts. Long narrow rigid bodies. The body of a column, or the column itself.
