Swing Bearing Failure Signs to Look For

One of the most important parts on your excavator is the swing bearing. If your swing bearing fails, you won’t be able to use your machine. There are some simple warning signs your swing bearing, or slew ring as they are often called, is about to fail.
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An obvious sign your swing bearing is failing is the condition of the lubricant. If you see metal particles or flakes in the fluid you will know significant wear is taking place.
Another red flag is a grinding, popping, or clicking noise from the bearing. Noise like that generally means you need to lubricate your swing bearing or there is excessive wear in the raceway.
If there’s a lot of play or movement, the raceways are probably warn down too much. As the space between the bearing and frame increases, wear is usually accelerated. This is when you really need to keep your eye on that function of your machine.
An increase in torque or binding can mean there is uneven wear in the raceway. If the turning torque of the bearing increases a lot or if the bearing has tight spots, this usually means you have an uneven load. You may notice a wobbling or rocking motion especially when the arm is extended with a full load.
Another warning sign is resistance to the swing or when the upper structure goes beyond the expected stop point.
The most obvious and biggest warning sign is when the bearing pops and cracks as the machine digs. If you get to this point it’s time to start shopping for a new swing bearing.
Keep your eyes and ears open for all these warning signs. Along with proper maintenance, you can avoid being caught off guard by a failed swing bearing. If it turns out you need a new slew ring, the price tag isn’t cheap, however you can save a ton of money with a new replacement swing bearing. ConEquip Parts has new DYCO swing bearings for about half of what you’ll pay for a new one at your dealer.
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[@duniaalber3178]

perfect, greetings from Chanel 🇮🇩

[@MrMan5014]

I have a Kobelco ED150 and some rusty water was dripping out of the swing drive seal today after not being run for an extended period…i greased it well to day…I could feel a slight disturbance in the swing as it swung around instead of the buttery smooth swing it normally has…I will give it some more grease tomorrow and see how it works after…what is a ball park price for a sing gear/bearing for a 14-15 ton excavator?

[@P4bLOinc]

question, could swing bearing failure or faulty will damage center swivel?

[@Conequipparts]

do you mean the swing drive?

[@beaustoioff6182]

Are loose turret bolts on a Bobcat 334 mini excavator indicative of a failing swing bearing? Thanks.

[@SabresPoint]

Great question, call your tech on that one

[@hitachikomatsu4351]

poor lubrication causes swing bearing failure

[@halelucas5563]

What happens if the swing bearing fails? I'm running a link belt 330lx shear and it has all the symptoms said in this video but the company I work for don't care about fixing it. Could it be dangerous for the operator? Could the upper separate from the undercarriage?

[@Conequipparts]

Never heard about anything dangerous happening to the operator but I can't say for sure. Eventually, your upper structure simply won't turn anymore. Give us a call so we can help you!

[@cresencianoabel409]

How much it will cost me to buy a (set of) swing bearing for a Liugong 920D model 2014?

[@Top5cring]

well, it could catastrophically fail if loaded enough, but on an excavator unlikely, on a crane however, the whole bearing could just snap in two.