8″ Ultra High Capacity Polymer – Model 150 Rigid Caster

Plate Model 150 with Rigid are used in concurrence with the same plate swivel caster. Plate Caster Model 150s usually have 4” wide wheels with a 1 1/4” diameter axle. The mounting plate is 5/8” thick. The leg thickness is 1/2”. These specs are designed to withstand the most arduous caster tasks. Rigid Model 150 plate casters are moved with mechanically powered equipment. All of our frames are zinc plated for rust protection and wheel bearings have a grease fitting. Rigid casters are used to control the direction machine is moved when direct line travel is needed. The same model swivel casters should be connected nearest the push handle or tow bar. Rigid casters are not able to move sideways, you must select swivel casters for maximum movement in enclosed space. *This Plate Caster Model 150 contains the Ultra High Capacity Polymer Wheel. The caster shown in photo with 8″ x 4″ wheel. The Inner Workings of the Ultra High Capacity Polymer Caster Wheels Ultra High Capacity Polymer Caster Wheels from Caster City are engineered to support heavy loads while protecting floors from the damage typically caused by metal wheels. Unlike polyurethane wheels, which can develop flat spots or delaminate under prolonged static loads, these non-marking black polymer wheels are compression molded and machined for superior durability and performance. Their straight-sided design maximizes load capacity, making them an ideal choice for indoor applications on smooth surfaces where floor preservation is critical. Available in 2”, 3”, and 4” widths and diameters ranging from 3” to 12”, these wheels are equipped with 2 to 4 precision sealed ball bearings (depending on size) for smooth operation and long service life. With a hardness of 80 Shore D and a temperature range of -20°F to 250°F, they resist corrosion, chemicals, and impacts, offering a robust alternative to steel wheels. These wheels are designed for a wide range of heavy-duty applications across industries, including material handling, manufacturing, warehousing, aerospace, automotive, and more. Their flat tread face ensures stable load distribution, and the compression molding process eliminates the risk of flat spots, making them perfect for equipment like platform trucks, assembly line carts, or automated guided vehicles (AGVs) that remain stationary under heavy loads. Capable of withstanding shocks, chemicals, oils, and acids, these wheels are also suitable for harsh environments like chemical plants, food processing facilities, or marine applications. For high-temperature settings (up to 250°F) or specialized needs, such as stainless steel bearings or roller bearings, Caster City offers customizable options to meet your requirements. For further assistance, contact our engineering team at 800-501-3808. Features of Ultra High Capacity Polymer Caster Wheels: Non-Marking Black Polymer: Prevents floor damage, unlike metal wheels. Compression Molded & Machined: Ensures durability and eliminates flat spots or delamination. Straight-Sided Design: Maximizes load capacity for heavy-duty applications. Precision Sealed Ball Bearings: 2–4 bearings (for 3” and 4” wide wheels) for smooth operation. Tread Face: Flat for stable load distribution. Hardness: 80 Shore D for excellent durability. Temperature Range: -20°F to 250°F (approximate melting point: 500°F). Chemical Resistance: Resists corrosion, acids, oils, greases, and more. Bearing Options: Available with plain bore, precision sealed ball bearings, roller bearings, or stainless steel bearings. Sizes: 1.25” and 2” widths for 3”–8” diameters; 2”, 3”, and 4” widths for 3”–12” diameters