mud pump shives pricelist

ISO 9001:2000 certified worldwide manufacturer of standard & custom industrial products including sheaves mud pump sheaves. ISO 9001:2000 certified worldwide manufacturer of standard & custom industrial products including V-belt sheaves. V-belt sheaves are available in standard QD style, standard taper bushed style, hi-cap wedge QD style & conventional taper bushed style. Conventional stock sheaves include combination QD sheaves, combination groove TB sheaves, fractional horsepower sheaves, single groove variable pitch sheaves & two groove variable pitch sheaves. Hi-cap wedge QD style feature 2 groves & 3V belt cross sections. Hi-cap wedge QD style out side dia. sizes ranging from 220 in. to 2.2 in.

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Welcome to Pickett Oilfield’s mud pumps web page. Our company has been in the oil & gas drilling equipment industry for over 38 years, supplying new and used mud pumps and mud pump parts to customers in practically every producing region in the world. We are here to serve all your drilling equipment needs – if you don’t see it on this site, just give us a call or email. We can get it, if you need it!

Pickett Oilfield, LLC offers prospective buyers and extensive selection of quality new and used oil & gas drilling equipment, including mud pumps and parts to choose from at competitive prices. Browse our inventory of mud pumps and mud pump parts for sale at competitive rates.For more information or to request a quote, please Contact Us at 936-336-5154 or email to Sales@PickettOilfield.com.

We commonly receive the call to help assist in properly sizing pulleys and sheaves for pump applications.  Generally, this is in high pressure wash applications but we also run into a fair amount of agricultural applications where this knowledge can be leveraged.  Pulleys or “sheaves” are commonly used for connecting pumps to motors or engines via drive belts.  Most pulleys are cast iron or aluminum construction and are offered in either fixed-bore or tapered bushing styles.

For proper operation of any brand or pump type, it is critical to size pulleys and sheaves, correctly, in order to maintain correct RPM, (revolutions per minute). RPM speed is what determines the pump output flow rate – in gallons per minute, liters per minute, etc.

Incorrect pump RPM will adversely affect the pump performance.  If the pump is turning too slow – it will not give full performance.  Conversely, if the pump is turning too fast, it could cause premature mechanical failures (i.e. valve wear or elastomer failure).

Therefore, it is absolutely critical to ensure correct pulley sizing and analysis of the drive unit, (motor, engine, etc.) relative to the pump. For the sake of this discussion, we will assume standard electric motors at 1750 RPM and standard gas engines at 3400RPM.  Do note, one must determine the rpm of their drive unit to be able to accurately calculate the pulley/sheave size.

If you start with an incorrect figure for RPM – you will size your equipment incorrectly.  This could lead to shorter equipment lifespans and/or reduced output flow rates.  Thus, ultimately a less efficient system which equates to more down time and added cost of operation.  The scope of this post will be focused towards plunger pump applications.  We assemble many units using this method in Omaha, NE.  Dultmeier Sales is proud to display the Built in the USA logo on our products.  Here are just a handful of the pulley-driven pump products that we offer.

There are complicated formulas for determining pulley ratios but in generic, layman terms, simply divide the driven component (pump) by RPM, the driver component (motor or engine) rated by RPM to get the required ratio.  In the example below, the pump RPM is 1070, for full output, while the motor is 1750 RPM.

This means the pulley ratio must be .611 to drive the pump correctly.  Hypothetically speaking, if we had a 4 inch pulley on the motor, we would require a 6.55” pulley on the pump.  That mathematical equation is as follows: 4” divided by .611 = 6.55”

If the drive pulley on the engine is 4 inches in diameter, we need to calculate 4/.315 = 12.70.  This means that the pump pulley must be 12.70 inches, in diameter, to run the pump at 1070 rpm.  You can view a technical page from our catalog here – it will help to further explain the calculation process.

Most pulleys, or sheaves, are designed with either fixed shaft bores or tapered bushing hubs.  Replaceable hubs fit the required motor or pump shaft size in either inch or mm sizes – depending on the application requirement.  These hubs come with bolts to attach them to the pulley, or sheave.

Tapered style hubs simply fit into the pulley opening and then are tightened with two or three set screws, which draw the bushing and pulley together to make one assembly.  The pulleys are then attached to the driver (electric motor or gas engine) and driven components (pump).  The type of hub, H, SD, SH, etc. must match to a pulley with the same designation for proper fit.

As the information above shows, there are many things involved in order to determine the correct pulleys required to drive your pumps correctly.  It is important to remember the larger the difference in pulley sizes, the larger the center distance required to maintain minimum contact with the smaller pulley.  We would be glad to help with any sizing for your specific applications.  Your Experts in Delivering Fluid Handling Solutions – We Know Flow!