Articles

Gem Sensors Product Overview

Gem Sensors Product Overview Gems Sensors & Controls designs and manufactures a broad portfolio of liquid level, flow, and pressure sensors, miniature solenoid valves, proximity switches and pre-assembled fluidic systems to exact customer application and manufacturing requirements. With over 50 years experience, and dedication ... [More »]

KB Category: Articles - Published: 4/2/2010 2:41:53 PM - Author: K Contributor

PVWJ vs. PVWH Pumps - Engineered for Better Performance

Engineered for Better Performance The new PVWJ open loop, axial piston pump Oilgear’s new PVWJ open loop, axial piston pump delivers enhanced stability and less maintenance in low- to medium horsepower industrial and mobile hydraulic applications. An improved design from the PVWH pump, the PVWJ is completely interchangeable with the PVWH unit, equ... [More »]

KB Category: Articles - Published: 9/23/2009 3:52:49 PM - Author: T Holczer

Rineer 15 Series Standard Motors

Rineer 15 Series Standard Motors 15 Series Standard Motor Features 8 fixed displacements 6 cu. in. to 15 cu. in. Splined and keyed drive shafts available 3000 PSI continuous pressure SAE "C" mounts Bi-rotational High start up torque Compact and weighs only 43 lbs. Other Non-Standard Opt... [More »]

KB Category: Articles - Published: 9/23/2009 2:38:35 PM - Author: T Isaacson

Effect On Low Voltage On Power Unit Operation

Summary Because of low voltage at the motor, a motor adequately size to drive a pump at a given pressure when operating at speed may not be able to start the pump against the same pressure. Normal Operation A typical AC induction motor used to drive a small displacement, high pressure hydraulic pump is a single-phase unit designed to operate ef... [More »]

KB Category: Articles - Published: 9/26/2008 11:55:29 AM - Author: M Jessup

Electrical Power Distribution And Its Effect On Motor Operation

Summary Voltage drop in long electric supply circuits can have an adverse effect on motor performance. Consider true voltage available at motor under load when specifying motors/power units Note : For the following, assume that the single-phase voltage at the step-down transformer feeding a facility is held at 120 VAC regardless of loa... [More »]

KB Category: Articles - Published: 9/26/2008 10:39:57 AM - Author: M Jessup

Single-Phase Electric Motor Performance Characteristics

Summary Pull-up torque during starting is critical when specifying electric motors Note: For the following discussion, assume the voltage and signal frequency across the motor remains constant. Power factor, variable-speed controls, and other arcane AC phenomena will be ignored. Motor Rating Continuous-duty electric motors are rated by... [More »]

KB Category: Articles - Published: 9/16/2008 11:29:44 AM - Author: M Jessup