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We used to assume that once equipment is installed and aligned, it will remain in the same position forever. But this is not always the case. The alignment should be checked periodically. This valuable information will help you to find problems like pipe stress, unstable foundations, weak frames and loose bolts, among other problems. All […]

Sources of Equipment Damage: Funnels Maintaining proper oil levels in our equipment is a critical maintenance function to keep our assets running and producing product. Adding (or topping off) oil in our assets requires a means to transfer the lubricant from a container to the machine. The means used to accomplish this task are much […]

Where to place the vibration sensor depends on what data you wish to see.  Certain defects show up better in the horizontal direction while other defects show up better in the vertical direction.  So which location should I choose to place my vibration sensor?  Most sensors in use today are single-axis sensors, so generally 95% […]

In order to heat a bearing for proper bearing installation, you can use multiple methods. In this case I will compare using a hot plate to using an Induction Heater. Hot plates come in different shapes and sizes but in essence it is a plate that will heat up, and onto which a bearing will […]

When using phase to determine how a machine is moving, the orientation of the sensor mounted on the machine is extremely important.  In Figure 1 below one sensor is attached to the motor’s outboard (non-drive) end in one orientation, and on the other inboard (drive) end, it is mounted in the opposite direction. Because the […]

We previously discussed the Types of Misalignment and Types of Soft Foot as causes of machine failures. In this blog, we will discuss Pipe Strain and how it can result in misalignment and vibration. Pipe strain is a form of machine frame distortion caused by the piping as opposed to a feet or base condition. […]

Guest post by Suzane Greeman, ASQ-CMQ/OE, CAMA, CAMP, CMRP, author of the Risk-based Asset Criticality Assessment (R-b ACA©) Handbook.  Suzane is the Principal Asset Management Advisor of Greeman Asset Management Solutions Inc. Asset Condition Management Asset failure is the most common form of risk that is managed on industrial plants. One key element of asset […]

We’ve all read about it: leak detection should be a top priority since leaks can account for up to 30 to 40% of consumed volume… So, why is this issue still on the table? Why is it difficult to change things in the field? In industry, one of the most common applications for ultrasonic detectors […]

It is important to ensure that the top cover mounting surface, machine sole plates and rails, and main bearing “landings” of a compressor frame are installed as flat as possible. This ensures that the main bearing bores and internal components remain undistorted and aligned as per their factory specifications. Ariel Compressors have a strict tolerance […]

We previously discussed the Types of Misalignment as a cause of machine failures. In this blog, we will discuss Types of Soft Foot and their impact on machines. Soft foot means machine frame distortion that occurs when the machine hold down bolts are loosened or tightened. A soft foot condition can lead to internal misalignment of […]

When looking for an induction heater, below are some recommendations to help with your buying decision: Size: Choose bearing heater based on maximum workpiece weight, or minimum inner (ID) and maximum outer (OD) diameter. Temperature control, single or dual: One temperature probe minimum, but two is ideal. To monitor the temperature of the bearing or […]

Best practice lubrication requires filtering out particles to the proper ISO code for the type of machine. One way to keep your equipment lubricant clean is by installing good quality desiccant breathers. Desiccant breathers replace the standard dust cap or OEM breather cap on equipment and provide much better particulate and moisture filtration. Not all […]

Misalignment occurs when the driver’s (motor) shaft centerline of rotation is not concentric with the driven shaft’s (pump) centerline of rotation. Even today some professionals assume that the coupling will deal with the misalignment. However, the misalignment tolerance built into the couplings merely show how much misalignment the coupling can handle and still transfer power. […]

Sometimes unbalance can be caused by a shaft key being too long.  When a shaft assembly goes to the balance machine, the assembly is normally balanced with a half key installed.  The coupling and key have been removed and a half key installed into the keyway on the shaft.  The straight portion of the shaft […]

The SDT270 system was used to collect ultrasound data at a methane plant for start-up and commissioning of newly installed equipment to get a baseline condition on the motor’s and gear reducer’s bearings and gears. We were immediately able to pinpoint a defect in the drive end motor bearing using the SDT270 as well as […]

In order to heat a bearing for proper bearing installation, you can use multiple methods. In this case I will compare using an Oil Bath Heater to using an Induction Heater. In an Oil Bath Heater you need a container which will be filled with oil and heated in order to place a bearing in […]

Vibration is everywhere! Vibration is a “back and forth” movement of a structure or component. Vibration can also be referred to as a “cyclical” movement. It can be inherent in a piece of equipment or can be induced by another form of energy. The real question is whether the vibration is detrimental to the equipment […]

A couple of months ago, we were hired to perform an alignment on a motor/gearbox setup with a 9-foot spacer coupling in between. The obstacle this time around was that the spacer coupling was going through a steel support beam. The coupling is round but the hole in the beam was square, just big enough […]

Guest post by Paul Llewellyn – LUBRICATION ENGINEERS If manually greasing a bearing typically means that the bearing will end up being over-greased because more often than not the person doing the greasing pumps new grease in until new grease comes out the other side of the bearing, and over-greasing is as bad as under-greasing, then […]

As Published by Maintworld March 2018 issue CRISTAL UNION (CU) is an agroprocessing cooperative company ranking among the top European sugar and alcohol producers. Most of its facilities are established in France (18 sites). The BOURDON site in AULNAT (in the Puy-de-Dôme département) has a production capacity of 4,500 tons of beets per day. The company contacted SDT Ultrasound […]