Sleeve, shaft

Shafts. Shafts shall he suitable for hook-type sleeve. Shaft material shall he (SAE 1045 steel on Duron and 316 stainless steel pumps) or (AISI 316 stainless steel on CD-4MCu pumps and 20 stainless steel pumps). Shaft deflection shall not exceed. 005 at the vertical centerline of the impeller. 

Increasing the shaft diameter is the most logical solution. This can be done with some pump models by simply replacing sleeved shafts with solid shafts, or by increasing the diameter of the solid shaft with a small modification to the seal chamber bore. With the pump disassembled on the shop table, the mechanic can identify the source of the problem in the pump. 

Metallurgy sleeve, shaft, set screws, gland, metallic parts, drive pins, clips, keyways, anti rotation pins, etc. 

Thrower Ring Rubber Ring Resilient Sleeve Shaft Sleeve Rubber Ring Retaining Ring Rubber Ring Capscrew (6) Gland Yoke Key... 

The interference fit specimens were placed on a vee block within the scanning tank and the transducer height set to scan the sleeve/shaft interface. The ultrasonic wave is refracted at the water/steel interface. The height of the transducer required to focus the wave on the interference interface was calculated using Snell s law of refraction (see Figure 5). 

NonmetalHc centrifugal pumps utilize polymers for all components coming into contact with the pumping media. Even the steel (qv) shaft is sleeved with plastic to isolate the shaft from the fluid. Mechanical seals are reversed so that the metal face does not come into contact with the corrosive... 

Pump vibration measurements and analysis of the ampHtude—frequency spectmm have led to the deterrnination of possible equipment ailments. Examples of frequency relationships to particular pump vibration problems are available (62). Eor example, a one-time (lx) frequency corresponding to a mnning speed usually indicates the presence of rotor unbalance, a 2 x peak may mean a bent shaft, and a - O.dx may be a symptom of an oil whip at the sleeve bearing. 

Noncorrodible shaft surfaces or shaft sleeves of bronze, stainless steel. Monel, or chrome plate are commonly employed with a mbber beating. 

Shaft Sleeve. Renewable hook-type shaft sleeve that extends through the stuffing box and gland shall he provided. Shaft sleeve shall he (316 stainless steel), ( 20 stainless steel) or (XH-800 Ni-chrome-horon coated 316 stainless steel with coated surface hardness of approximately 800 Brinnell). 

Cast Iron—316 SS Fitted. IS" only pump shall have cast iron casing and stuffing box cover. 316 SS metal impeller shaft shall he 1045 steel with 316 SS sleeve. 

All Duron Metal. AU pump materials shall he Duron metal. Shaft shall he 1045 steel, with 316 SS sleeve. 316 SS metal impeller optional. 

All 20 Stainless Steel. All pump materials shall he 20 SS stainless steel. Shaft shall he 316 SS, with 20 SS sleeve. 

For hi -pressure installations, it is possible to balance partially or fully the hydrostatic force on the rotating member of an internal seal by using a stepped shaft or shaft sleeve (Fig. 10-113). This method of... 

The sleeve bearing has the further advantage that it func tions as a lubricated, pressurized shaft seal to contain the pressure on the process gas (see subsec tion Shaft Seals ). 

Next we ll discuss evidence marks and prints that are different, but to the untrained eye, they may appear the same. You may see a spot or arc of wear and gouging on the rotary elements, and a eireumferential wear circle on the bore of the close tolerance stationary elements. This is a maintenanee-indueed problem, d his is the sign of a physically bent shaft, or a shaft that is not round, or a dynamic imbalance in the shaff-sleeve-impeller assembly. The solution is to put the shaft on a lathe or dynamic balancer, verify its condition, and correct before the next installation. 

Sleeve bearings on some older, slower, larger pump shafts can withstand dirt contamination better than ball and roller bearings. This is because the tolerances are not so strict with sleeve bearings, the surface area of contact is greater, and the lubricant flushing action is better. The sleeve bearing material of construction is... 

Pump packings should be selected for their ability to compress. When gland pressure is applied, the packing should react quickly to detain the leakage and not damage (score) the shaft or sleeve. 

To supply back pressure , which aids in impeding the entrance of abrasive and corrosive material into the stufhng box. Abrasives and corrosives will damage the shaft or sleeve, and disintegrate the paeking. 

Too many gland adjustments will cause the packing to crystallize and burn, which will shorten the packings useful life and damage the shaft or pump sleeve. 

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