Hydraulic Motors - Features

GlobalSpec has asked its users about the latest design trends and features related to Hydraulic Motors. They have also shared their product applications and tips on how to buy and use these products.
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What would your design or feature "wish list" be for this product?

36 answers

Answers:

Able to handle higher case pressure spikes in high pressure seal area. Full flow counter balance capability on power reversal.

~John M, Technical Support, Vancouver, WA

Lightweight, highly reliable, maintenance friendly, easy availability of spares at cheaper prices and service back up.

~Phaniraj K, General Management, Secunderabad, India

Cooler working temperature, thereby extending the life of pumps in tropical climates. And no sweating on coupling.

~Toddy R, General Management, Point Lisas, Trinidad W>I>

Variable speed and pressure pumps, smaller & lighter motors with high power/torque output.

~Glenn D, General Management, Aiea, HI

Ease of pump or motor displacement rings for easy change out in field (I sometimes ship out and must repair on site).

~Eugene T, Manufacturer, Victoria B.C., Canada

1) Higher speed for radial piston motor 2) Higher initial mechanical efficiency for axial piston motor.

~Colin G, Design Engineer, Shanghai, P.R.China

It would be to use motors in agriculture in applications such as grass mowers, silage wagons, lime spreaders.

~Cyril L, Manufacturer, Sligo, Ireland

My idea and my need is to find small Hydraulic motor to replace air tools in the meat industries, that allow power, constant torque, noise level at zero db, flexibility, reduced electricity cost.

~Graziano R, Project Manager, Modena, Italy

I would see a Hydraulic motor fitted at each wheel of a vehicle, a car, and the supplying pump would be driven by an electric (battery operated motor).

~Leo B, Design Engineer, Beauharnois, Quebec, Canada

High torque with reasonable price, because the delivery time and price from Hagglunds is crazy.

~Li Y, General Management, Shanghai, China

To make it safe and usable for a lots of things but the safe part is very important.

~Robert B, Retired, once worked on jet air craft, Rising City, NE

Built in braking system where you don't have to install external components.

~Maintenance/Facilities Management, Mount Pearl, Canada

Low tech, and available to everyone.

~Jay Q, Design Engineer, Clearlake, CA

More torque and horse power in a smaller and compact motor design.

~Claude L, General Management, Montreal, Canada

Equivalent of 20-30 HP electric motor at approximately 2000 rpm.

~Melvin A, Sr. Environmental Program Manager, Tupelo, MS

Variable displacement with proportional control, speed sensor.

~John S, Tech support engineer, Sherwood Park, Canada

An innovative engineer with CAE capability and motivation.

~Ed A, Inventor, St. Augustine, FL

Light weight, low wear, high torque, non corrosive.

~Warren K, Manufacturer, Toronto, Canada

Much better efficiency - today's normal is about 85%.

~Mike L, Manufacturer, Mississauga, Can

A gear hydraulic motor with high torque starting.

~Aurelio B, Industrial Technologist, Ambato-Tungurahua, Ecuador

Integrated proportional or servo control units.

~George W, Engineering Consultant, Austria

Very low power loss from pump to motor.

~Jim A, Owner, Alternative Energies, Inc., Indianapolis, IN

Adjustable speed positional control

~Henry C, Marketing/Sales, Taichung, Taiwan

Compact and minimum internal leakage

~Chelakara N, Project Manager, Pune, India

A better lead time and availability.

~Engineering, Design, hermosillo, Mexico

Ripple free smooth speed output

~Doug B, Faculty/Staff, Saskatoon, Canada

Guidelines for sizing selection

~Rod P, General Management, Manila, Philippines

Have some more speed available

~Alfred G, Design Engineer, Johannesburg, South Africa

Better contamination control

~Norm E, Automotive Technical Trainer, Mount Evelyn, Australia

Reduce the cost of motors.

~Oleg V, Engineering Consultant, Sankt-Petersburg, Russia

Lower operating temperature

~Son V, Technical Support, Houston, TX

Smallest, and hi torque

~De Leri G, Engineering Consultant, Italy

Efficiency at low speed

~Nahum Goldenberg N, Engineering Consultant, Kiriyat-Ono, Israel

High specific torque .

~Rajiv R, Design Engineer, Cochin, India

Hydrostatic drive

~Onnig B, Design Engineer, Beirut, Lebanon

High efficiency

~Paul R, Manufacturer, Loveland, CO

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Is there any advice you want to share with users to help them avoid common errors in selection or usage of a hydraulic motor?

18 answers

Answers:

Mainly the torque/speed ratings are theoretical numbers. Decreasing to about 85% for maximum will just get you to the starting gate. For maximum life, oversizing to a substantial amount at much lower than rated pressure is recommended.

~Mike L, Manufacturer, Mississauga, Can

Correct application with matching load - torque characteristics, use of correct lubricant and contamination free design of pipes and other accessories.

~Phaniraj K, General Management, Secunderabad, India

Make sure the control valves can allow enough oil to feed the motor.

~Cyril L, Manufacturer, Sligo, Ireland

Select a motor which can be available ex-stock with any dealer. If it is non-standard, your down time the machine will be too high.

~Adi S, Engineer, India

General Error - wrong or no quality control of hydraulic fluids.

~Oleg V, Engineering Consultant, Sankt-Petersburg, Russia

Contamination control should be executed in the whole system design and produce process.

~Colin G, Design Engineer, Shanghai, P.R.China

Not only focus on high-torque itself, maybe the combination with gear-box is a good substitute.

~Li Y, General Management, Shanghai, China

Hyd motors must be labeled to the proper amount of pressure it can put out and the amount of flow in gallons per unit.

~Robert B, Retired, once worked on jet air craft, Rising City, NE

Ask supplier what the optimum operating conditions are for longevity.

~John S, Tech support engineer, Sherwood Park, Canada

Check the specific torque, max operating pressure and max rpm.

~Rajiv R, Design Engineer, Cochin, India

Check the wear surfaces to see if they are actually functional.

~Breveglieri A, Design Engineer, Casalecchio di Reno-Bologna, Italia

Do not underestimate their power when utilized properly.

~Leo B, Design Engineer, Beauharnois, Quebec, Canada

Starting torque control loop pressure drop drain

~Henry C, Marketing/Sales, Taichung, Taiwan

Always keep good, clean hydraulic oil in the units.

~Lloyd H, Technical Support, Moore, OK

Correctly match Hyd. motor to drive motor hp

~Norm E, Automotive Technical Trainer, Mount Evelyn, Australia

Don't undersize for the sake of cost.

~John M, Technical Support, Vancouver, WA

Speed volume and torque required.

~Eugene T, Manufacturer, Victoria B.C., Canada

Don't be excessive on your GPM.

~Toddy R, General Management, Point Lisas, Trinidad W>I>

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Hydraulic Motors - Features

Results of a Poll of GlobalSpec subscribers