Danfoss OMR 80: specs, versions and how to order the right motor
The Danfoss OMR 80 is a workhorse. It turns up on conveyors, augers, sweepers and small wheel drives, and most of the time it just works. The trouble starts when it needs replacing. Two near-identical part numbers can mean different versions, and the maker has changed. This guide gives you the real numbers, the version trap and a checklist. Hydraulic Mart supplies hydraulic motors, pumps and valves to factories and plants across India, and this is how we’d go through it with you.
Danfoss OMR 80 motor: the numbers
A reseller datasheet gives the motor’s geometric displacement as 80.3 cm³, with a maximum speed of 750 rpm (940 intermittent), maximum torque of 195 N·m (220 intermittent, 270 peak), power of 12.5 kW (15 intermittent), a pressure drop of 175 bar (200 intermittent, 225 peak) and a maximum flow of 60 litres per minute. Danfoss’ individual catalog lists the OMR sizes as 50, eighty, one hundred, one hundred and twenty-five, one hundred and sixty, 200, 250, 315 and 375, with eighty eighty.3 cm.
The same data sheet describes a 25 mm instantaneous shaft with an 8 mm key, a 2-hole SAE-A flange with a center diameter of eighty-two.5 mm and a hole spacing of 106.four mm, and a G1/2 facet port. Those are the dimensions you check against your old motor.
Danfoss OMR 80 hydraulic motor: versions and part numbers
Here’s the trap. Listings show several part numbers for what looks like the same motor:
- 151-0411, a Danfoss number for the 80 with a straight shaft and no drain port. One European shop lists it at €534.70 excluding VAT, with an availability note of 200 days.
- 151-0711, a different Danfoss number that appears as the previous number for White’s newer 80, item 11186671, listed at €393.65 excluding tax, weighing 5.91 kg, made in Poland.
Notice that 0411 and 0711 are not the same detailed variation. Different design versions transmit a type of code, so the motor that seems right may fluctuate in shaft, port or flange. Always match your own nameplate, not just the size.
Who makes it now?
The motor isn’t produced by Danfoss any more. Danfoss set up White Drive Motors & Steering as a stand-alone business, because it had to divest the line to get approval for its Eaton Hydraulics acquisition. Interpump Group then agreed to buy the unit from Danfoss. A reseller says White’s motors are manufactured by White Drive Motors & Steering, formerly Danfoss and Sauer-Danfoss. That explains why the same motor appears under two brands.
Hydraulic Mart isn’t the manufacturer of any of them.
A price warning
One listing for the 151-0411 shows a price of €1.99, which is a placeholder, not a price. If a figure looks too good, ask what it’s really for. These are overseas prices, not Hydraulic Mart prices.
The method: size, version, shaft, ports
Size. Confirm 80 on the nameplate, which means 80.3 cm³.
Version. Copy the full part number, such as 151-0411, not just the size.
Shaft and ports. Measure the shaft, check the key and note the port type.
Proof. Ask the seller for the maker, the number and a plate photo.
A worked example
Say a conveyor drive gets 40 litres per minute. Speed is 40,000 ÷ 80.3, about 498 rpm. At 120 bar, theoretical torque is 80.3 × 120 ÷ 62.8, around 153 N·m. Real torque will be a little lower, since the datasheet’s 195 N·m at 175 bar is about 87% of theoretical. Output power at 498 rpm and 153 N·m is about 8 kW, comfortably under the 12.5 kW limit. The motor works fine here. Now try 60 liters corresponding to the minute at 175 bar. The speed is about 747 rpm, just under the 750 rpm restriction, so it has no extra margin. A brief check like this will let you know if the motor is the correct length before you order it. This is illustrative math, there is no spec sheet anymore, so use current day data for your model.
Implementation steps
- Photograph the old motor’s nameplate, shaft and flange before removal.
- Write down the full part number and any old Danfoss number.
- Measure the shaft diameter and key, and note the port sizes.
- Note the flow, pressure and speed the machine needs.
- Send everything to Hydraulic Mart and ask what’s available.
- Ask the seller to state the exact part number, maker, condition and warranty in writing.
- Compare the delivered motor’s plate and shaft with your old one before fitting.
- Flush the lines, fit the motor, run it unloaded first and watch temperature and noise.
The usual mistakes are matching only the size, mixing up similar part numbers and running at the limit with no margin.
FAQs
What is the Danfoss OMR 80?
It’s an orbital motor with 80.3 cm³ displacement, rated at about 750 rpm, 195 N·m and 175 bar continuous. It’s used on conveyors, augers and sweepers.
What is a Danfoss OMR 80 motor used for?
Low speed, ultra-torque jobs to which the gearbox will add value and length, including conveyors, augers, sweepers and small wheel drives
151-0411 151-0711 And what is the difference?
They’re different design versions, and listings show them with different part numbers. Match your nameplate and check the shaft, flange and ports.
Who makes the Danfoss OMR 80 hydraulic motor now?
Reports say White Drive Motors & Steering, part of Interpump Group, took over the line from Danfoss. Ask any seller to state the maker.
Can Hydraulic Mart supply a Danfoss OMR 80 hydraulic motor?
Send nameplate photos, version code and running tension to Hydraulic Mart and ask about availability, manufacturer and warranty before you hand it over.
Your next step
Photograph the nameplate, measure the shaft and send everything to Hydraulic Mart. You’ll know exactly which version you need before you spend anything.
