OMR motor range and construction
BLINCE OMR hydraulic motors use a geroler gear set with shaft flow distribution for rotary machinery drives. The catalogue configurations shown here cover geometric displacements from 36 to 381.4 cm3/rev. Select a displacement together with its shaft, mounting and port arrangement; the model number alone does not define the installed motor.
The OMR family is useful to compare when a machine needs hydraulic rotary output and the designer already knows the driven speed, starting load and available oil supply. This page brings the model data and connection checks together so a replacement enquiry or a new drive selection can start from a complete configuration.
OMR model specifications
| Model | Displacement cm3/rev | Continuous pressure differential MPa | Continuous torque Nm | Maximum continuous speed rpm |
| OMR 36 | 36 | 14 | 72 | 1085 |
| OMR 50 | 51.7 | 14 | 100 | 960 |
| OMR 80 | 81.5 | 17.5 | 195 | 750 |
| OMR 100 | 102 | 17.5 | 240 | 600 |
| OMR 125 | 127.2 | 17.5 | 300 | 475 |
| OMR 160 | 157.2 | 16.5 | 360 | 378 |
| OMR 200 | 194.5 | 13 | 360 | 310 |
| OMR 250 | 253.3 | 11 | 390 | 240 |
| OMR 315 | 317.5 | 9 | 390 | 190 |
| OMR 375 | 381.4 | 7 | 365 | 155 |
These catalogue values apply to the listed 25 mm, 1 in, splined and 28.56 mm tapered shaft configurations. Other shaft versions require their own table. Pressure differential, torque and speed are separate limits; the highest figures must not be combined into a single operating point. Confirm the current data for the ordered configuration.
Choosing between OMR 160 and OMR 200
A larger displacement does not always provide a higher continuous torque rating. In this table, OMR 160 and OMR 200 both list 360 Nm continuous torque. OMR 160 lists a 16.5 MPa continuous pressure differential and 378 rpm maximum continuous speed; OMR 200 lists 13 MPa and 310 rpm. The two configurations therefore offer different combinations of flow, pressure and speed even though their listed torque is the same.
Compare the machine operating point rather than selecting the larger model automatically. A speed requirement, return-line pressure or a different shaft arrangement may change which configuration is appropriate. Starting torque and low-speed behaviour need the relevant performance data as well as the continuous ratings.
Estimating speed from the available flow
For an initial estimate, ideal motor speed in rpm equals inlet flow in L/min multiplied by 1000 and divided by displacement in cm3/rev. At an assumed 30 L/min, an OMR 200 with 194.5 cm3/rev gives 30 x 1000 / 194.5 = approximately 154 rpm before volumetric losses. This is a calculated selection example, not a measured BLINCE performance point.
Use the actual flow reaching the motor. Return pressure, oil temperature, leakage and load affect the real operating point. Check the selected motor curve and circuit conditions before treating an ideal calculation as the required working speed.
Shaft flange ports and drain connections
| Interface | Information to match | Why the detail matters |
| Output shaft | Profile diameter key or spline details and usable length | Defines the connection to the coupling sprocket or driven assembly |
| Mounting | Pilot diameter bolt pattern flange form and available space | A similar looking flange can have a different pilot or bolt arrangement |
| Hydraulic ports | Thread or flange type location and hose clearance | Determines whether existing connections can be installed correctly |
| Return and drain | Expected outlet pressure and the approved drain arrangement | Motor pressure differential and case conditions need separate checks |
| External shaft load | Coupling belt or sprocket load and its position | Hydraulic torque selection does not establish output bearing suitability |
Preparing a conveyor or brush drive enquiry
For a conveyor example, include the required driven speed and starting torque, and identify whether the motor connects directly or through a transmission. For a brush drive example, include the normal working load and any belt or sprocket connection. These are enquiry scenarios, not claims that one OMR configuration is approved for every conveyor or sweeper.
An existing motor replacement is best identified with a nameplate photograph and a dimensional drawing. A shared OMR reference or nominal displacement is not enough to establish another brand or variant as a direct replacement.
