Steel conveyor belt pulleys are critical to the design of any automated conveyor belt program. They act as the driving push behind the movement of the belt, generating torque and swiftness. In very general conditions it can be stated that pulleys are categorized as friction drive or timing pulleys (type I and II). Precision may be the name of the game with regards to pulleys. A steel belt is only as good and specific as the pulleys. Most pulleys suggested by Ever-power are constructed with anodized aluminum (hard layer) with the proper friction coefficient to drive the metallic belt. Stainless steel may also be used but it is costly and heavy, though it might end up being indicated in certain applications where extra hardness is necessary. If your application requires a lighter pulley, the professionals at Ever-power will help you choose the best material.
Selecting the right pulley size and construction can have a significant influence on the lifespan and performance of a conveyor belt. Ever-power engineers have the data and experience to assist you choose the appropriate pulley type, diameter, and composition to reduce maintenance downtime and increase product volume.
Metallic Conveyor Belt Pulley Types
Ever-power designs custom metal conveyor belt pulleys and configurations to bring optimum efficiency to your system. While metal conveyor belts are usually made of stainless, pulleys can be produced from a number of materials, including aluminium or a number of plastic composites. Depending on the unique requirements of one’s body, the pulleys may also be installed with custom timing attachments, relief channels, and more.
Independently Steerable Pulley
Ever-power has developed an innovative concept in toned belt tracking called the ISP (independently steerable pulley), which can be used in the next system designs:
· Two pulley conveyor systems in which the ISP may be the idler or driven pulley
· Systems with multiple idler pulleys on a common shaft
· Systems with serpentine or other complex belt paths
Steering toned belts with an ISP is founded on the idea of changing tension romantic relationships over the width of the belt by adjusting the angle of the pulley relative to the belt.
Rather than moving the pulley shaft left/right or up/straight 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 is designed 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 method of steering flat metallic belts. Users may combine ISP steering with the original belt tracking styles of crowning, flanging, and timing elements to create a synergistic belt tracking system which effectively and precisely steers the belt to specific tracking parameters.
Unique Characteristics and Benefits of the ISP
· Toned belts are tracked quickly by rotating the steering collar.
· ISP designs minimize downtime when changing belts on creation machinery.
· ISP system is simple to use and requires no special tools or schooling.
· ISP simplifies the design and assembly of conveyor systems using toned belts.
· Existing idler pulleys may normally be retrofitted to an ISP without major system modifications.
· No maintenance is necessary once the belt tracking parameters have been established.
· It prolongs belt lifestyle by minimizing side 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 used to avoid the shaft from turning.
The Rotated Shaft Approach to ISP Flat Belt Tracking
· Is used with systems having an individual pulley on the shaft.
· Is ALWAYS utilized when the pulley body is a capped tube style.
· Is NEVER used when multiple pulleys are on a common shaft.
· Utilized selectively when the ISP is certainly a steering roll in a multiple pulley system.
Secure the ISP to the shaft using the split collar and locking screw included in the ISP. Rotate the shaft and collar as a unit. When the desired tracking features are obtained, prevent the shaft from rotating by securing the shaft clamp. The pulley body will today rotate about the bearing included in the ISP assembly. This technique enables 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 required tracking characteristics are obtained, avoid the shaft from rotating by securing the shaft clamp. The pulley body will now rotate about the bearing built into the ISP assembly. This technique enables the belt to become tracked while running under tension.
The Rotated Collar Method of ISP Flat Belt Tracking
· Used to individually change each belt/pulley combination when there are multiple pulleys on a common shaft.
· Used when systems have a cantilevered shafting typical of serpentine and various other complex belt path systems. It is suggested that these changes 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 obtained, secure the locking screw.
Which Design Is Correct for You?
There are plenty of applications because of this new product, therefore Ever-power designs and manufactures independently steerable pulleys to suit your needs. Contact Ever-power to discuss your queries or for design assistance.
Ever-power is the worldwide innovator in the look and manufacturing of application-specific pulleys, metallic belts, and drive tapes. Our products provide unique benefits for machinery found in precision positioning, timing, conveying, and automated manufacturing applications.
System Configuration
#1 1 – The drive pulley is a friction drive pulley.
· The ISP is certainly a friction-driven pulley. This configuration is usually specified for a tracking accuracy of 0.030″ (0.762 mm) or greater.
· Teflon® flanges are attached to the pulley body to establish a lateral constraint. The steering feature of the ISP is utilized to set one edge of the belt against the flange with minimal side-loading to the belt.
System Configuration
Number 2 2 – The drive pulley is a timing pulley.
· The ISP can be a friction driven pulley. One’s 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 precision is between 0.008″ (0.203 mm) and 0.015″ (0.381 mm) for metallic belt systems.
OR
· The ISP is certainly a timing pulley. The teeth of the ISP and the perforations of the belt are used 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 0.008″ (0.203 mm) to 0.015″ (0.381 mm) for metal bells.
Take note: Although it is normally not recommended to have timing elements in both drive and driven pulleys, this style can be used selectively on steel belt systems with long middle distances between pulleys and in applications where particulate accumulation on the top of pulley continually changes the tracking feature of the belt.