Cooling an Overheated Hydraulic System
This chart has been prepared for use with an existing hydraulic system which runs at too high a temperature. It may be used to estimate heat exchanger capacity which must be added to reduce the oil temperature to an acceptable level.
Matching the Size of a Broken Pump or Motor
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Electric Motor Size for Hydraulic Pump Drive
Figures in the body of this table show the horsepower needed to drive a positive displacement hydraulic pump, and would be valid either for electric motor or engine drive.
Force Required to Accelerate a Load
The purpose of this data sheet is to show how to calculate the extra pressure or torque needed in a hydraulic system to accelerate an inertia load, Item (3), from standstill to its final velocity in a given time, assuming the pressure needed for Items (1) and (2), the work load and the friction resistance has already been calculated or assumed.
Angle Problems in Fluid Power Applications
Womack Machine Supply Company Angle Problems in Fluid Power Applications reference page
Hoisting and Cable Tensioning with Cylinders
Womack Machine Supply Company Hoisting and Cable Tensioning with Cylinders reference page
Cushioning and Decelerating Methods for Cylinders
Womack Machine Supply Company Cushioning and Decelerating Methods for Cylinders reference page
Design of Cams for Actuating Limit Switches
Womack Machine Supply Company Design of Cams for Actuating Limit Switches reference page
Flow Through Orifices
The chart shows approximate pressure drops which may be expected at various flows rates through sharp edge orifices for petroleum type hydraulic oil. It may be used for designing limiting flow orifices in hydraulic systems.
Two-Hand Safety Control of Air and Hydraulic Circuits
Where cylinders are operating mechanisms which might present a safety hazard to the operator, dual controls may be provided. These require the use of both hands to start the cylinder and to keep it in motion. Dual controls are also used on large presses which require two operators. Each operator has a control; neither can start the press until the other is ready.
Selection Guide for Electric Wire Size
When choosing the conductor size for electrical wiring, there are TWO important factors which must be considered, and these are: (1), the safe current-carrying capacity without overheating, and (2), keeping the voltage loss to an acceptable minimum.
Cylinder Force for Punching, Notching and Shearing
An approximation can be made of the cylinder force needed to punch a hole, slot, or notch, using this method: Find the cross section, in square inches, of the section to be sheared.
Automatic Reversing Circuits for Presses
Circuits on this data sheet are intended for air and hydraulic presses, to automatically retract the press cylinder when a pre-set tonnage has been reached, this retraction to override the operator and take place even though the operator may still be holding down a foot valve or foot switch.
Factors which Influence the Speed of an Air Cylinder
It is very difficult to calculate and predict the speed of an air cylinder; there are too many variables which influence speed and on which it is difficult to gather accurate data. We must rely mainly on good design practices and use the benefit of past experience. It is better to have the cylinder speed too fast to begin with because it can always be reduced with a speed control valve, but if it is too slow to begin with, it is more difficult to increase its speed later.
How to Use Pressure Differential Sequencing
Womack Machine Supply Company design data sheet for How to Use Pressure Differential Sequencing
How to Calculate Stretch in Cylinder Tie Rods
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How to Use Flow Coefficients (Cv) for Hydraulic Fluids
Womack Machine Supply Company design data sheet for How to Use Flow Coefficients (Cv) for Hydraulic Fluids
Troubleshooting for Recurrent Solenoid Burn Out
Womack Machine Supply Company design data sheet for Troubleshooting for Recurrent Solenoid Burn Out
Clamp and Work Applications with Sequence Valves
Womack Machine Supply Company design data sheet for Clamp and Work Applications with Sequence Valves
How to Select a Pressure Switch for Your Application
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U.S. Customary Units Compared to ISO International Standard Units
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Cv (Flow Factors) for Compressed Air
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Minimizing Shock in Hydraulic Systems
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Information on Sound Power and Sound Pressure
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Interchange Between SI, Metric and U.S. Customary Units
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Spool-Type Proportional Flow Dividers
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Fluid Power Equivalent of Mechanical Horsepower
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Designing Slow Feed Circuits - Part 1, Hydraulic Cylinders
Womack Machine Supply Company design data sheet for Designing Slow Feed Circuits for Hydraulic Cylinders
Life Expectancy of Piston-Type Pumps and Motors
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Finding the Cause of Solenoid Coil Burn-Out
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A Study of Rotary-Type Flow Dividers
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Pressure Rating of Steel Cylinder Tubing
Womack Machine Supply Company design data sheet for Pressure Rating of Steel Cylinder Tubing
3-Phase, Induction-Type, Electric Motors for Pump Drive
Womack Machine Supply Company design data sheet for 3-Phase, Induction-Type, Electric Motors for Pump Drive
A Load Sensing Control Increases Pump and Circuit Efficiency
Womack Machine Supply Company design data sheet for A Load Sensing Control Increases Pump and Circuit Efficiency
How to Make Noise Calculations with Decibels
Womack Machine Supply Company design data sheet for How to Make Noise Calculations with Decibels
Bootstrapping to Save Power - Part 1, Tension Stressing
Womack Machine Supply Company design data sheet for Bootstrapping to Save Power - Part 1, Tension Stressing
Better Design of Systems Which Use Fire Resistant Fluids
Womack Machine Supply Company design data sheet for Better Design of Systems Which Use Fire Resistant Fluids
Designing Slow Feed Circuits - Part 2, Air Cylinders
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Pressure Compensated Hydraulic Speed Control - Part 1
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How to Control Air Motors
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Vehicle Drive with Hydraulic Motors - Part 1
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Matching a Hydraulic Motor to the Load
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Applications for Pressure Reducing Valves
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Applications for Cam-Actuated Valves
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How to Solve Your Air Line Water Problem
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Tips on Selection of Shell and Tube Heat Exchangers
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Tips on Sizing Accumulators
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Troubleshooting Tips for Hydraulic Pumps
Womack Machine Supply Company design data sheet for Troubleshooting Tips for Hydraulic Pumps
Effects of Oversizing or Undersizing an Electric Motor for a Job
Womack Machine Supply Company design data sheet for Effects of Oversizing or Undersizing an Electric Motor for a Job
Bootstrapping to Save Power - Part 2, Tension Stressing Continued
Womack Machine Supply Company design data sheet for Bootstrapping to Save Power - Part 2, Tension Stressing Continued
Speed Regulation of Hydraulic Motors - Part 1
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Speed Regulation of Hydraulic Motors - Part 2
Womack Machine Supply Company design data sheet for Speed Regulation of Hydraulic Motors - Part 2
Cylinder Drift Problems and Their Solution
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Simple Measurements in Hydraulic Systems
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Tips on Selection of Plumbing Size for Hydraulic Systems
Womack Machine Supply Company design data sheet for Tips on Selection of Plumbing Size for Hydraulic Systems
Pressure Loss Due to Fluid Flow Through Pipes
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Air Consumption of Cylinders
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Dimensions of SAE Port Pads
Womack Machine Supply Company design data sheet for Dimensions of SAE Port Pads.
Pump-Down Time for Vacuum Tanks
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Hydraulic Filter Beta Ratings and the Multi-Pass Test
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Pressure Compensated Hydraulic Pumps
Womack Machine Supply Company design data sheet for Pressure Compensated Hydraulic Pumps
Troubleshooting Tips for Hydraulic Systems
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Computing Power to a Hydraulic System
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Circuit Design with Vane-Type Rotary Actuators
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NEMA Frame Assignments - 3-Phase Induction Motors
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Troubleshooting Tips for Closed Loop Hydrostatic Systems
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Troubleshooting Tips for Open Loop Hydraulic Systems
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Piston-Type Pressure Intensifiers
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Rotary-Type Pressure Intensifiers
Womack Machine Supply Company design data sheet for Rotary-Type Pressure Intensifiers
Vehicle Drive with Hydraulic Motors - Part 2
Womack Machine Supply Company design data sheet for Vehicle Drive with Hydraulic Motors
Horsepower Required for Compressing Air
Womack Machine Supply Company design data sheet for Horsepower Required for Compressing Air
Steel Tubing - Pressure and Flow Ratings for Hydraulic Plumbing
Womack Machine Supply Company design data sheet for Pressure and Flow Ratings for Hydraulic Plumbing
Working with ISO Metric Cylinders - Part 1
Womack Machine Supply Company design data sheet for Working with ISO Metric Cylinders - Part 1
Working with SI (System International) Cylinders - Part 2
Womack Machine Supply Company design data sheet for Working with SI (System International) Cylinders - Part 2: FLUID POWER - Design Data Sheet 75.
NFPA Mounting Flanges and Shafts for Hydraulic Pumps and Motors
Womack Machine Supply Company design data sheet for NFPA Mounting Flanges and Shafts for Hydraulic Pumps and Motors
Hydraulic Cylinder Speeds - Extension and Retraction
Womack Machine Supply Company design data sheet for Hydraulic Cylinder Speeds - Extension and Retraction
Wire Size and Fuse Ratings for 3-Phase Induction Motors
Womack Machine Supply Company design data sheet for Wire Size and Fuse Ratings for 3-Phase Induction Motors
ISO Pipe Thread and Port Thread Sizes
Womack Machine Supply Company design data sheet for ISO Pipe Thread and Port Thread Sizes
JIC Standard Symbols for Electrical Ladder Diagrams
Womack Machine Supply Company design data sheet for JIC Standard Symbols for Electrical Ladder Diagrams