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Pulley Alignment Tools

Product Image Item Name- Price
Pulley Alignment Tool

Pulley Alignment Tool

Misalignment and guesswork will eventually destroy your expensive equipement. Mr. Shims ' new lasetr alignment tool solves these types of problems.Premature failure and accelerated belt and sheave wear are a thing of the past.Step into the future...


Pulley Partner

Pulley Partner

Laser Pulley Alignment SystemsKX-2500 Pulley PartnerWith Patented Reflected Laser Beam Technology The Pulley Partner laser pulley alignment system is lightweight, compact and durable. The unit magnetically attaches to the inside or outside face...


Pulley Pro Green

Pulley Pro Green

Green Laser Pulley Alignment SystemKX-3500 Pulley PRO GreenWith Patented Reflected Laser Beam Technology The PULLEY PRO GREEN laser pulley alignment tool is powerful, rugged and durable. The unit magnetically attaches to the inside or outside face...


Pulley Partner/Pro Offset Bracket

Pulley Partner/Pro Offset Bracket

Pulley Offset Bracket used for the pulley partner and pro


Consequences of Belt Misalignment
Like shaft misalignment, belt misalignment can result in a wide range of detrimental and sometimes dangerous consequences, including:

  • Reduced efficiency of the machine

  • Increased wear on pulleys and belts

  • Increased friction

  • Excessive energy consumption

  • Increased noise and vibration and

  • Premature bearing and belt failure

Types of misalignment
Measuring prallel and angular misalignment using a straightedge or a piece of string.
Unless the misalignment is corrected, a new replacement belt will likely wear out quickly. Continuous operation in a misaligned state also will increase wear on the pulleys themselves, as well as their axles, shafts and bearings.
Maintaining belts in proper alignment is just as important as aligning shafts. For that reason, laser-guided belt aligning devices are an essential part of an up-to-date maintenance operators tool kit.

Belt alignment laser-guided tools consist of two components, a laser emitting unit and a 3-D receiver. The tool uses V-guides along with powerful magnets that quickly attach in the pulley groove to facilitate alignment of pulleys even if they have unequal widths or dissimilar faces.

Nature of Misalignment
As with shaft misalignment, there are various types of belt misalignment. In practice, a combination of different misalignments is often encountered simultaneously. For this reason, it is important that an alignment instrument both diagnoses and details the nature of the machine's misalignment. The following illustrations depict the three different types of belt misalignment.

Vertical angle or twisted misalignmentoccurs when one of the pulleys has an angular error from the vertical angle plane. This is usually caused by incorrect positioning of the machine and can be corrected by lifting either the front or rear feet of the motor to which the pulley is attached, depending on the direction of the vertical angle error. This differs from shaft alignment in that one never moves both feet in a vertical direction to reach the desired result.

Horizontal angle misalignmentoccurs when the driver and the driven unit are not positioned parallel to each other. Incorrect positioning of applications, such as the motor, typically can cause this type of misalignment. Horizontal angle misalignment generally can be corrected by moving the front or rear feet forward or backward on their guides, depending on the direction of the horizontal angle error, in order to twist the motor around its center.

Parallel misalignmentis the least complex form of misalignment. It is often caused by the incorrect positioning of the motor along its shaft axis, positioned either too far forward or backward compared to the other shaft. Or it can be caused by incorrect positioning of the pulleys on their respective shaft, where one of the pulleys needs to be adjusted on the shaft.

Belt Alignment Methods
Belt alignment can be performed by either traditional visual methods or the laser method. Traditional methods usually employ strings and/or straightedges. Laser methods utilize a laser beam, which provides for a much higher degree of accuracy.

The main advantage of these traditional methods is the limited length of time needed for adjustment, although the use of a straightedge takes more time than visual assessment alone. The major disadvantage is the lack of accuracy. For example, some belt manufacturers recommend a maximum misalignment of 0.5 degrees or even 0.25 degrees, which is difficult to accomplish by using visual assessment. These traditional low-tech methods involve a good deal of trial and error, naked eye approximation, and rough estimates. All told, that means a large margin for error, which is unacceptable for precision pulley alignment.

A laser belt alignment system enables one to adjust alignment with far more speed and accuracy than with traditional methods. Systems available on the market can be categorized according to the way the devices are attached to the pulley and the way they align. Generally, there are two groups, one that aligns the face of the pulleys and one that aligns the grooves of the pulleys.

Most products on the market use the face or side of the pulley as a reference for aligning the pulleys and belts. The advantage of this method is that it can be used for belt types other than V-belts, such as timing belts. V-belts, however, comprise the majority of belts found on the market, especially in industrial applications. The main disadvantage is that the face of the pulley is the only reference point. This means that only the faces of the pulleys are aligned with each other. This method results in varying degrees of accuracy when the pulleys are of different thickness, brands or kinds (e.g. one single-belt pulley and one multiple-belt pulley) or when the faces are not well finished.

Products that align using the grooves of the pulleys in which the belt runs tend to provide substantially higher levels of accuracy regardless of the thickness, brand or type of pulleys.

Soft Foot
Soft foot is a condition in which one of the feet of a machine does not sit flat on the baseplate. Soft foot is among the most common causes of misalignment. Accordingly, one of the first steps to take in an alignment check is to assess the equipments foundation and employ a suitable shaft alignment tool to identify and correct potential soft foot conditions. Some laser-guided alignment tools have a soft foot operation capability that guides the user through corrective procedures. Shim plates generally can be used to bring machines back into both vertical and horizontal alignment.

Bearings out of square with their housings are another common cause of misalignment. Often a condition of wear, the out-of-square bearing and/or its housing will need to be corrected or replaced in order to bring machines back into alignment.

Maintaining Correct Alignment
Once misalignment is detected, analyzed and corrected, an ongoing alignment maintenance program is important to keep operations running smoothly. As part of this maintenance, alignment checks should be performed to document alignment conditions before a machine is removed from service. This gives users the ability to install new or rebuilt machines with the same proper alignment values. In addition, a maintenance program should include periodic checks to verify conditions are still within tolerance.

Taking these simple steps to detect, correct and maintain proper shaft and belt alignment can prevent costly, unplanned downtime. Fortunately, there is a range of modern laser-alignment options available to make this process easier than ever before.
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