Metallic conveyor belt pulleys are critical to the design of any automated conveyor belt system. They become the driving force behind the motion of the belt, making torque and velocity. In very general conditions it can be said that pulleys are categorized as friction drive or timing pulleys (type I and II). Precision may be the name of the overall game with regards to pulleys. A metallic belt is only as good and specific as the pulleys. Many pulleys recommended by Ever-power are constructed with anodized aluminum (hard coat) with the right friction coefficient to drive the metallic belt. Stainless steel may also be used nonetheless it is costly and heavy, although it might become indicated using applications where extra hardness is necessary. If your application requires a lighter pulley, the experts at Ever-power will help you select the best material.
Selecting the correct pulley size and construction can have a significant influence on the lifespan and performance of a conveyor belt. Ever-power engineers possess the data and experience to assist you choose the appropriate pulley type, diameter, and composition to reduce maintenance downtime and increase product volume.
Metal Conveyor Belt Pulley Types
Ever-power designs custom steel conveyor belt pulleys and configurations to bring optimum efficiency to one’s body. While steel conveyor belts are usually made of stainless, pulleys can be produced from a number of materials, including aluminium or a variety of plastic composites. Depending on the unique requirements of your system, the pulleys can also be installed with custom timing attachments, relief channels, and more.
Independently Steerable Pulley
Ever-power has developed a forward thinking concept in toned belt tracking called the ISP (independently steerable pulley), which can be utilized in the following system designs:
· Two pulley conveyor systems where the ISP is the idler or driven pulley
· Systems with multiple idler pulleys on a common shaft
· Systems with serpentine or additional complex belt paths
Steering toned belts with an ISP is founded on the idea of changing tension interactions over the width of the belt by adjusting the position of the pulley in accordance with the belt.
Instead of moving the pulley shaft left/right or up/down by pillow prevent adjustment, the ISP fits a adjustable steering collar and sealed bearing assembly to the body of the pulley.
The steering collar was created with either a skewed or an offset bore. When rotated, the collar changes the position of the pulley body, leading to controlled, bi-directional movement of the belt across the pulley face.
The ISP is exclusively available from Ever-power. It provides a simple approach to steering flat steel belts. Users may combine ISP steering with the original belt tracking designs of crowning, flanging, and timing components to make a synergistic belt tracking system which effectively and exactly steers the belt to specified tracking parameters.
Unique Characteristics and Advantages of the ISP
· Flat belts are tracked quickly by rotating the steering collar.
· ISP designs minimize downtime when replacing belts on production machinery.
· ISP system is simple to use and needs no special tools or teaching.
· ISP simplifies the look and assembly of conveyor systems using toned belts.
· Existing idler pulleys can normally be retrofitted to an ISP without major system modifications.
· No maintenance is required once the belt monitoring parameters have already been established.
· It prolongs belt lifestyle by minimizing part loading when using flanges and timing pulleys.
ISP Pulley (picture and cross-section view)
Installation and Use
The ISP is mounted to the system frame using commercially available pillow blocks. A clamp is utilized to prevent the shaft from turning.
The Rotated Shaft Method of ISP Flat Belt Tracking
· Is used with systems having an individual pulley on the shaft.
· Is ALWAYS used when the pulley body is usually a capped tube design.
· Is NEVER utilized when multiple pulleys are on a common shaft.
· Used selectively when the ISP can be a steering roll in a multiple pulley program.
Secure the ISP to the shaft using the split training collar and locking screw built into the ISP. Rotate the shaft and collar as a device. When the desired tracking features are obtained, prevent the shaft from rotating by securing the shaft clamp. The pulley body will now rotate about the bearing built into the ISP assembly. This method allows the belt to end up being tracked while running under tension.
Protected the ISP to the shaft using the split training collar and locking screw included in the ISP. Rotate the shaft and collar as a device. When the desired tracking characteristics are obtained, avoid the shaft from rotating by securing the shaft clamp. The pulley body will today rotate about the bearing included in the ISP assembly. This method allows the belt to become tracked while working under tension.
The Rotated Collar Method of ISP Flat Belt Tracking
· Used to individually modify each belt/pulley combination whenever there are multiple pulleys on a common shaft.
· Utilized when systems possess a cantilevered shafting typical of serpentine and additional complex belt route systems. It is suggested that these modifications be made only once the belt is at rest.
Fix the shaft via the shaft clamp, loosen the locking screw of the steering collar, and rotate the steering collar about the shaft. When the desired belt tracking characteristics are attained, secure the locking screw.
Which Design Is Right for You?
There are many applications for this new product, therefore Ever-power designs and manufactures independently steerable pulleys to meet your requirements. Contact Ever-power to discuss your queries or for design assistance.
Ever-power is the worldwide head in the design and manufacturing of application-specific pulleys, steel belts, and drive tapes. Our products provide unique benefits for machinery used in precision positioning, timing, conveying, and automated production applications.
System Configuration
#1 1 – The drive pulley is a friction drive pulley.
· The ISP is usually a friction-driven pulley. This configuration is definitely specified for a tracking accuracy of 0.030″ (0.762 mm) or greater.
· Teflon® flanges are mounted on the pulley body to determine a lateral constraint. The steering feature of the ISP is used to set one advantage of the belt against the flange with reduced side-loading to the belt.
System Configuration
#2 2 – The drive pulley is a timing pulley.
· The ISP is certainly a friction driven pulley. The teeth of the drive pulley and the perforations of the belt set up a lateral constraint. The steering feature of the ISP is utilized to reduce side-loading of the belt perforations. Tracking accuracy is between 0.008″ (0.203 mm) and 0.015″ (0.381 mm) for steel belt systems.
OR
· The ISP is definitely a timing pulley. One’s teeth of the ISP and the perforations of the belt are utilized for precise monitoring control of the belt with the steering feature of the ISP utilized to minimize aspect loading of belt perforations. Again, tracking accuracy is usually 0.008″ (0.203 mm) to 0.015″ (0.381 mm) for metal bells.
Take note: Although it is normally not recommended to possess timing elements in both the drive and driven pulleys, this design can be used selectively on steel belt systems with lengthy middle distances between pulleys and in applications where particulate accumulation on the top of pulley continuously changes the tracking characteristic of the belt.