
PBC LINEAR
Frequently asked questions
Common questions about PBC LINEAR from 3G Electric.
What sizes of PBC Linear V-guide wheel bearings are available?
PBC Linear V-guide wheel bearings are available in sizes 1, 2, 3, and 4. These correspond to different outer diameters: size 1 is 0.771 inches, size 2 is 1.21 inches, size 3 is 1.803 inches, and size 4 is 2.36 inches. Each size is designed to mate with the corresponding V-guide rail size. The bearings are used as rolling elements in linear motion systems, and the size selection depends on the load capacity and rail size required for the application. 3G Electric stocks multiple part numbers within each size, including variations in material and sealing.
What is the difference between 52100 steel and 303 stainless steel in PBC Linear wheel bearings?
PBC Linear offers V-guide wheel bearings in both 52100 bearing steel and 303 stainless steel. 52100 steel is a high-carbon chromium alloy known for high hardness and wear resistance, making it suitable for high-load applications in typical industrial environments. 303 stainless steel provides corrosion resistance, which is beneficial in environments with moisture, washdown, or chemical exposure. Both materials are used in bearings that are permanently greased and sealed or shielded. The choice depends on the operating conditions and required service life. 3G Electric lists the material for each bearing to aid selection.
Are PBC Linear V-guide wheel bearings maintenance-free?
Yes, PBC Linear V-guide wheel bearings are designed for maintenance-free operation. They are permanently greased at the factory and sealed or shielded to retain lubrication and exclude contaminants. This eliminates the need for relubrication during service. The seals or shields also protect the bearing internals from dust, debris, and moisture. This design is common in linear motion systems where access for maintenance is limited or where downtime must be minimized. 3G Electric supplies these bearings as direct replacements for original components.
What are Redi-Rail guide rails from PBC Linear?
Redi-Rail is a product family from PBC Linear that includes guide rails and carriages for linear motion. These rails are typically made from aluminum or steel and are designed for use with matching bearing carriages. Redi-Rail systems are used in applications requiring smooth, low-friction linear movement, such as automation equipment, packaging machines, and material handling systems. The rails are available in various lengths and can be cut to size. 3G Electric stocks Redi-Rail components as part of its PBC Linear offering, providing options for building or repairing linear axes.
How do I select the correct PBC Linear V-guide wheel bearing for my application?
Selection involves matching the bearing size to the V-guide rail size, considering the load capacity, speed, and environmental conditions. The bearing size (1 through 4) must correspond to the rail size. Material choice depends on corrosion resistance needs: 303 stainless steel for corrosive environments, 52100 steel for standard industrial use. Sealed bearings are suitable for dirty or wet conditions, while shielded bearings may be used in cleaner environments. 3G Electric provides detailed specifications for each part number, including outer diameter, material, and lubrication type, to assist in selection.
Does 3G Electric stock PBC Linear sleeve bearings?
Yes, 3G Electric includes PBC Linear sleeve bearings in its catalog. Sleeve bearings, also known as plain bearings or bushings, are used in linear motion systems to provide low-friction sliding contact. They are often made from materials like bronze or polymer composites and are used in applications where rolling elements are not suitable, such as high-load, low-speed, or oscillating motion. PBC Linear offers various sleeve bearing styles, and 3G Electric lists them with specifications to support replacement or new designs. Availability can be checked by part number.
