Non reverse ratchet vertical pumps A non-reverse ratchet assembly includes a stationary ring with a plurality of saw teeth equally distributed over an outer surface of the stationary ring; a rotating housing with a rotating ring surrounding the stationary ring; and a plurality of ratchet elements equally distributed and positioned between the rotating ring and the stationary ring, wherein each ratchet element is configured to 1. A Non-Reverse Ratchet, here in also referred to as NRR, provides immediate protection against reversing due to phase reversals or from backspin (Reverse flow of Water at shutdown). catalog including Item #,HP,RPM,Voltage,FLA @ 460,Frame,Thrust Down Ultra Series vertical pump motors are completely NEMA premium efficient, meeting IEEE 841 levels with a full cast iron frame, inline, high thrust, space heaters, and a non-reverse ratchet. Drive Electric motor with vertical solid shaft as standard Vertical Turbine/ Vertical Mixed Flow/ Vertical Axial Flow SVT, SVMF & SVAF Vertical Pumps for CW / ACW, HP / LP Capacity (Maximum) : 30,000 m /hr. If upthrust and non-reversing protection are both required, a Non-Reverse Ratchet should be specified. I know the pumps will be on continuously for 24/365 for 15 years (except maintenance), taking water from the river and pumping it to a processing plant and non-reversing protection are both required, a Non-Reverse Ratchet should be specified. The motor shall have angular contact thrust bearings to meet the designed pump’s hydraulic thrust load plus the weight of the rotating parts under operating conditions. Oil Drain 8. The reason is to stop the shaft while the pump water column is receding. catalog including Item #,Item Name,Description,Type,Usage,Enclo. GE's vertical pump motors are offered in standard efficient (SE), high efficient (HE) and NEMA premium efficient ratings with full cast iron frame, high thrust, space heaters, inverter duty insulation and non-reverse ratchet. The NRR stops the shaft while the pump water column is receding. We are the only manufacturer to offer this feature and not put a depth limitation on the ratchet. Bearing House 5. Stator 12. MOTORS®’ standard Non-Reverse Ratchet is for counterclockwise shaft rotation when viewed from the top of the motor. May 15, 2013 · The non-reverse ratchet installed in many vertical pumps of this type, especially those using vertical hollow-shaft motor is to stop this backward rotation before it starts. Direction of rotation: Clockwise when viewed from driving Non-corrosive, stainless steel rodent screens are part of the dual air flow system Machined for 175% extra high thrust capacity on 360 frames and up Die cast aluminum rotor with anti-rust paint finish and integral fan blades to assure low vibration and long motor life Ball-type non-reverse ratchet assembly made from forged steel 120V space All motors are stocked as extra heavy duty pin style, non-reverse ratchet coupling that can be removed and converted to self release coupling. Motors HoLLoSHAft,® High thrust U. ZONE 2 A wide selection of options, among them bearing isolators and ceramic bearings on drive end, extra high thrust and non-reverse ratchet for LP100 motors make these motors suitable for almost any requirement. U. Motors® brand vertical pump motors are designed with four functional zones. Ultra Series vertical pump motors are completely NEMA premium efficient, meeting IEEE 841 levels with a full cast iron frame, inline, high thrust, space heaters, and a non-reverse ratchet. This feature allows U. Oil Gauge 7. This means the coupling must be bolted to handle this condition. the pump and line shaft. All vertical hollow shaft motor CD dimensions will match and replace all competitive makes. Innovation and quality have always been among our Vertical A. Coupling: For pump and prime mover flexible or rigid as per requirement. In most cases, our customers call for 30% momentary upthrust. All standard and alternate coupling sizes are stocked as well. Angular Contact Bearing 9. C. This feature is used in deep well applications where water lubricated pump bearings are installed. MOTORS®’ Non-Reverse Ratchet (NRR) is typically used in deep well applications where water lubricated pump bearings are installed. Non-Reverse Ratchet Self Release Couplings Non-Reverse Ratchet Non reverse ratchet (optional) to prevent the reverse rotation. Application: Vertical Motor – Vertical Pump; Product Name: Non-Reverse Ratchet (Ratchet-Pin type) Model Name: NRVC; Freewheel one way clutch is used as: Backstop/Holdback; Mounting Location: Non-Drive or Drive end of the motor shaft ; Function: To Prevent Reverse Rotation of Motor Shaft from Reverse flow of Water at shutdown or Switch off. Dec 17, 2011 · Non-reverse ratchets (See Figure 8) prevent pump backspin when the power is off and the column of water falls through the pump impeller. They are not recommended for use on motors with a self-release coupling (SRC) as their tight tolerance may inhibit lateral pump shaft movement should the pump shaft unscrew. . MOTORS ® brand vertical pump motors with non-reverse ratchet to operate at any depth setting. You can bump rotation with the anti reverse ratchet in place. Designed primarily for deep well turbine pump applications. SEI carries VHS motors from 2 leading brands: North American Electric and US Motors. Browse Item # HO50S2BLG, Emerson/US Motors Vertical Holloshaft® High Thrust "P" Base Three Phase WPI Standard Efficient Motors in the Koffler Electrical Mechanical Apparatus Repair, Inc. Vertical Motor Accessories Special Features for High Thrust Motors Non-Reverse Ratchet Self-Release Couplings Steady Bushings Angular Contact Thrust Bearings Spherical Thrust Bearings Plate Bearings Non-Reverse Ratchet and Self Release Couplings PDS 584–209 Non-Reverse Ratchet. Steady bushings are used with either bolted couplings or motors equipped with a non-reverse ratchet (NRR). Non-Reverse Ratchet Plate 4. The motor shall be premium efficient Non-reverse ratchet: To prevent reverse rotation, available on request. Offering a rugged construction to meet the requirements in a wide range of vertical hollow shaft motor applications. They are built from the highest quality materials. The NRR prevent reverse rotation of shaft of the vertical motor while the pump water column is receding. S. Coupling For pump and prime mover flexible or rigid type as per requirement. Head (Maximum) : 300 m Temperature : 95°C SINTECH range of vertical pumps offer widest range of selection depending upon the pumping liquid from Clear Water o varying degress of contamination. Vertical Motor Accessories Special Features for High Thrust Motors Non-Reverse Ratchet Self-Release Couplings Steady Bushings Angular Contact Thrust Bearings Spherical Thrust Bearings Plate Bearings Non-Reverse Ratchet and Self Release Couplings PDS 584–209 To get started, some unique features of a vertical motor that you will want to know include the specifics of the motor coupling type, bore requirements, and if it requires a non-reverse ratchet to prevent the motor from spinning backward if the impeller is inundated with water when the motor is off. End Bracket 10. This design ensures easy installation and service and provides operator protection and convenience. The motor shaft can only turn in the forward direction. to NEMA MG-1 standards, _____ RPM vertical hollow shaft motor with a non-reverse ratchet to prevent reverse rotation. Non-Reverse Flange 2. Depending on the well depth, backspin can reach dangerous speeds if unchecked. Motor Stool Rigid construction to ensure vibration-free operation. The coupling is equipped with a non-reverse ratchet, which prevents motor rotation from backspin at shutdown. ZONE 1 Canopy cap allows easy access to the coupling, non-reverse ratchet and thrust bearing. Rotor 11. A wide selection of options, among them bearing isolators and ceramic bearings on drive end, extra high thrust and non-reverse ratchet for LP100 motors make these motors suitable for almost any requirement. Steel Ball 3. and non-reversing protection are both required, a Non-Reverse Ratchet should be specified. Browse GE Value Line™ Vertical Hollow Shaft WPI Ball Style Non-Reverse Ratchet Motors in the Koffler Electrical Mechanical Apparatus Repair, Inc. As the water flows back into the well and the water level drops below the upper shaft bearings , the pump will operate dry. You can do more damage by starting it in reverse with the anti reverse mechanism disconnected, vertical shaft couplings in pump CAN UNCOUPLE. Oil Fill Plug 6. two bidders offered one and two didnt. Aug 11, 2005 · Do I even need a Non-reverse ratchet. Base 4 general arrangement & SPecificationS 40HP-500HP MODEL, VHS MOTOR • Forged ball-type non-reverse ratchet • Insulated Upper Thrust Bearings (an option) Aurora Totally Enclosed Fan Cooled (TEFC) Vertical Pump Motors are robust inverter-duty motors that perform under the most strenuous and extreme conditions. For line shaft threaded barrel or muff type as per requirement. A non-reverse ratchet assembly includes a stationary ring with a plurality of saw teeth equally distributed over an outer surface of the stationary ring; a rotating housing with a rotating ring surrounding the stationary ring; and a plurality of ratchet elements equally distributed and positioned between the rotating ring and the stationary ring, wherein each ratchet element is configured to VERTICAL HOLLOW SHAFT MOTORS. For line shaft threaded or muff type as per requirement. Durable construction meets the requirements in a wide range of vertical hollow and solid shaft motor applications. Motor stool: Rigid construction to ensure vibration-free operation of pump set. Apr 15, 2013 · I have worked on vertical shaft turbine pumps from 20 HP to 400 HP for years. The coupling is no longer capable of self-release. Apr 15, 2013 · You can bump rotation with the anti reverse ratchet in place. Radial Ball Bearing 13. The Non-Reverse Ratchet provides immediate protection against reversing due to phase reversals or from backspin at shutdown. jet ipqm pms jgr joo cref lfil pwwasyr xcfuw ykakh