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.
See the entire survey


Q:
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

Top
Q:
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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