Danfoss OMR 160 repair: seal kit or full rebuild?
A Danfoss OMR 160 weeping oil at the shaft doesn’t automatically need a rebuild. It doesn’t automatically need just a seal kit either. The deciding factor is what’s happening inside the motor, and you can measure that in ten minutes. This guide gives you the real ratings, the kit part numbers and a way to decide before you spend anything. Advance Hydraulic Works works with hydraulic pump and motor repair and supply from Delhi NCR, and this is how we’d go through it with you.
Danfoss OMR 160 repair: the real ratings
A reseller datasheet for the common version, the 151-0414, gives a displacement of 159.6 cm³, continuous speed of 375 rpm, continuous torque of 300 N·m and a pressure drop of 130 bar. Flow is 60 litres per minute, and the shaft is 25 mm straight.
Those numbers give you the key test for any Danfoss OMR 160 repair. Theoretical speed is flow in L/min × 1000 ÷ 159.6. At 40 L/min that’s about 250 rpm. A healthy motor lands close to it, and a worn one falls well short. Datasheets vary by version, so check yours.
Danfoss OMR 160 seal kit: which one fits
Two kit numbers come up most often, and they aren’t interchangeable. Part number 151-1277 is listed for OMR Series 5 motors with 25.4 mm cylindrical and tapered shafts, and a dealer says it includes washers, O-rings and the primary seal. Part number 151-1166 is listed for 32 mm shafts and 35 mm tapered shafts in the same series.
A 25 mm shaft sits close to the 25.4 mm kit but isn’t identical, so don’t order a Danfoss OMR 160 seal kit by displacement alone. Danfoss also publishes a seal kit survey by motor type and warns it can’t be used for special versions. Send Advance Hydraulic Works your nameplate part number, shaft diameter and flange type, and we’ll match them to a kit before anything ships.
How does the OMR 160 differ from the OMR 125?
Both are rated at 300 N·m continuous. The 125 does it at about 475 rpm and needs more pressure, while the 160 does it at about 375 rpm and 130 bar. That matters for repair because the speed test uses displacement.
Take a motor on a 40 L/min pump. A 125 should turn about 318 rpm, since 40,000 ÷ 125.7 gives 318. A 160 should turn about 250 rpm. If you judge the wrong size, a healthy motor looks sick or a sick one looks fine. Confirm which size you have before you read the result.
Who makes the parts now?
A Czech reseller says Danfoss OMR motors are no longer produced and the 151-0414 has been replaced by 11186658, made by White Drive Motors & Steering. Kramp lists a 151-1277 kit under the White brand as fitting that Danfoss number.
Parts from different makers can share dimensions and still differ inside. Check the datasheet for the exact kit or motor you’re offered.
Danfoss OMR 160 repair service: what it costs
These are overseas listings. None is an Advance Hydraulic Works price:
- Seal kit 151-127700 at €19.01 excluding VAT.
- White-brand 151-1277 kit at €31.05 excluding VAT.
- Danfoss-listed 1511277 kit at €48.17.
- An aftermarket 151-1277 kit at US$65.99.
- A White OMR X 160, part number 11186658, with 25 mm shaft at €423.64.
A kit costs roughly 7% of a new motor, however it only works whilst the motor is sound. For a Danfoss OMR one hundred sixty repair provider, ask for a written quote after inspection, Advance Hydraulic Works included.
The method: symptom, speed, oil, version
- Symptom.Note where the oil leaks and when it began.
- Speed. Measure shaft speed at a recognized drift and examine it with the formula.
- Oil. Check colour, smell and clear out for water, warmness damage or metallic.
- Version.Confirm element variety, shaft size and flange from the nameplate.
A worked example
Two conveyor drives both weep at the shaft, and both are confirmed as 160s on a 40 L/min pump. Theory says about 250 rpm.
Motor A runs unloaded at 240 rpm, that is ninety six% of principle. Internal wear is small, and a kit need to therapy it. Motor B handiest reaches one hundred seventy rpm, or sixty eight%. Oil is slipping inside, so a new seal will leak again soon after fitting. Motor B needs its gerotor set inspected and probably replaced.
If Motor A has a 25 mm shaft, a kit offered for 32 mm or 35 mm tapered shafts is the incorrect component, even though each belong to the OMR family. The proper choice depends at the motor, no longer the own family call. This is illustrative arithmetic, so use the contemporary datasheet in your actual motor.
Implementation steps
1. Photograph the nameplate, shaft and flange before removal.
2. Write down the total component wide variety, which include 151-0414, and notice any drain port.
3. Measure velocity against float and record the result.
4. Inspect the oil and filter for water, warmness and metallic.
5. Send the entirety to Advance Hydraulic Works and ask which kit fits.
6. Ask the vendor to nation the maker, element quantity and assurance in writing.
7. Open the motor, look at each machined floor, update all seals and O-earrings, and reassemble the usage of the Danfoss guide’s torque values.
8. Flush the lines, in shape the motor, run it unloaded first, then at running pressure whilst you watch temperature and noise.
The usual mistakes are ordering a kit by displacement, skipping the speed test and refitting old O-rings.
FAQs
What is a Danfoss OMR 160 repair service?
Inspection, replacement of worn parts and seals, and a test before the motor goes back on the machine. Ask for the findings and test results in writing.
Which Danfoss OMR 160 seal kit do I need?
It depends on your part number and shaft. Kit 151-1277 is listed for 25.4 mm shafts and 151-1166 for 32 mm and 35 mm tapered shafts. Send your nameplate to Advance Hydraulic Works to confirm.
Can a seal kit fix a leaking Danfoss OMR 160?
Yes, if the leak is external and the motor runs near theoretical speed. If speed has dropped, the kit alone won’t fix it.
How do I know if my Danfoss OMR 160 is worn inside?
Speed falls well below flow × 1000 ÷ 159.6, and the motor may run hot under load.
Is Danfoss OMR 160 repair cheaper than buying new?
Usually, when the housing and shaft are intact. Compare a written repair quote with a replacement price. Advance Hydraulic Works can give you both.
Your next step
Run the speed test, photograph the nameplate, and send both to Advance Hydraulic Works. You’ll know whether you need a seal kit or a full rebuild before you spend anything.
