TECHNOLOGY: The Diesel generator set.

TECHNOLOGY: The Diesel generator set.: The packaged combination of a diesel engine, a generator and various ancillary devices (such as base, canopy, sound attenuation, control sys...

express: SHAFT COUPLINGS

express: SHAFT COUPLINGS: Couplings are used to connect the shaft of a driver,such as a turbine or a motor,to the shaft of a driven machine,such as a pump or generato...

SHAFT COUPLINGS

Couplings are used to connect the shaft of a driver,such as a turbine or a motor,to the shaft of a driven machine,such as a pump or generator.There are basically two types of couplings;rigid and flexible.
Rigid couplings require precise alignment and most commonly are used in vertical units where the entire weight is supported by thrust bearings in the motor or generator.Flanged couplings are used on large,vertical units and consist of precisely machined flanges on each shaft connected by a series of coupling bolts around the perimeter of the flanges.
Flexible couplings are designed to accommodate slight misalignment between shafts and to some extent,dampen vibration.If properly aligned,most couplings should require very little maintenance outside of periodic inspection and in some cases lubrication.Over time,the alignment between the pump and its driver can deteriorate,increasing stress on the coupling which can lead to a shorter life.

express: OIL AND LUBRICANTS.

express: OIL AND LUBRICANTS.: The primary purpose of a lubricant is to reduce friction and wear between two moving surfaces,but a lubricant also acts as a coolant,prevent...

express: OIL AND LUBRICANTS.

express: OIL AND LUBRICANTS.: The primary purpose of a lubricant is to reduce friction and wear between two moving surfaces,but a lubricant also acts as a coolant,prevent...

OIL AND LUBRICANTS.

The primary purpose of a lubricant is to reduce friction and wear between two moving surfaces,but a lubricant also acts as a coolant,prevents corrosion,and seals out dirt and other contaminants.In order for a lubricant to perform as intended,careful attention must be given to its selection and application as well as its condition while in use.
OIL LUBRICATION
Oil lubrication can take many forms- from a simple squirt oil can to a complex circulating system.Regardless of the method by which the oil is applied,the intent is the same,which is to keep a lubricant film between moving surfaces.
GREASE LUBRICATION
Grease is a lubricant consisting of a lubricating oil combined with a thickening agent.The base oil makes up 85-95 percent of the grease and performs the actual lubrication.
HYDRAULIC OIL.
The main purpose of a hydraulic oil is to transmit power,but it also must lubricate the components of the hydraulic system.In many systems,a lubrication oil such as turbine oil can be used as the hydraulic fluid.If the system uses a gear pump,operates at pressures less than 1000psi and has similar viscosity requirements,a turbine oil can function very well as hydraulic oil.