The Service Caster Series #20 is ideal for light and medium duty material handling, carts, equipment, and shop projects. Finishes are available in either zinc plating, which provides durability under any condition, or stainless steel, which resists rust and corrosion in indoor or outdoor applications where moisture is a factor. Mounting options include top plate, bolt hole and standard and metric threaded stem sizes. All rolling on a finely crafted ball bearing design that keeps you moving forward. SCC-20S514-HRS-TLB About Service Caster For over 25 years, Service Caster has been one of the largest caster and wheel companies in North America. We design, manufacture, assemble, and distribute casters worldwide from our location in West Reading, Pennsylvania. Trust us to assist you with selecting, designing, and integrating casters into your application. Choose from a wide range of casters and wheels designed for light to extra heavy duty use from our extensive catalog of over 200 brands, including the Service Caster brand. Series 20 Light Duty Hard Rubber Wheel Casters Hard rubber wheels not only provide higher load capacities and impact resistance than comparable wheels, but are also resistant to most chemicals and oils. Attributes For Series 20 Hard Rubber Wheel Casters Wheels Sizes- 3", 3.5", 4", 5" Brake Types- Top Locking, Total Locking Attachments Types- Top Plate, Bolt Hole, Threaded Stem Finishes- Zinc Plating or Stainless Steel Attachment & Brake Options Top Plate Provides the utmost stability by supporting the caster at four points. Available in rigid and swivel, with optional top lock or total lock brakes. Bolt Hole Features a 1/2” hollow rivet bolt hole that provides secure fastening for a variety of bolt threads. Bolt holes are available in swivel only, with optional top lock or total lock brakes. Threaded Stem Locks caster into place for a solid, secure fit. Threaded stems come in standard 1/2” and 3/8” diameters and metric 12mm and 10mm diameters. Because of these variations it’s important to measure accurately via a thread gauge. Threaded stems are available in swivel only, with optional top lock or total lock brakes. Brake Types Top Locking Brake (TLB) places a positive locking force against the wheel top to securely hold heavy loads. Total Locking Brake (TTL) solidly locks both the swivel and wheel, providing an exceptionally sturdy base when engaged. Other Series 20 Wheel Types Polyurethane Non-marking and non-marring, polyurethane performs especially well on hard surfaces such as concrete, tile, and wood. Available in five colors- blue, black, red, maroon and gray. Other Series 20 Wheel Types Semi-Steel Cast Iron Abrasion resistant and rugged, maintains effortless rolling under heavier loads and provides a cost effective solution over steel wheels. Other Series 20 Wheel Types Thermoplastic Rubber Soft, quiet and non-marking wheels perform especially well on hard surfaces such as concrete, tile, and wood. Other Series 20 Wheel Types Phenolic Resistant to impact damage, water, oil and grease. Non-metallic and spark proof. Solid Polyurethane Non-marking, non-marring polyurethane wheel molded as one solid piece. Will not flatspot or debond, ensuring a smooth and solid roll over long periods of time. Soft Rubber Resistant to most chemicals and oils- combine a soft tread on a hard rubber core, offering quiet movement and a cushioned ride. Nylon Provide very low rolling resistance, show a high resistance to many aggressive substances and resistant to most chemical and oils, and under normal operating conditions are maintenance free. Phenolic Hi Temp Ideal in high temperature baking environments. Resistant to impact damage, water, oil and grease. Non-metallic and spark proof. Series 20- Light Duty Series 30- Heavy Duty Series 92- Extra Heavy Duty Series 100- Pneumatic amazon.com/servicecaster Weight Capacity 300 2500 3500 450 Top Plate Dimensions 2.5" x 3.625" 4" x 4.5" 5.25" x 7.25" 4" x 4.5" Wheel Sizes 3", 3.5", 4", 5" 4", 5", 6", 8" 6", 8", 10", 12" 6", 8", 10", 12" Brake Types Top Lock, Total Lock Top Lock, Total Lock, Bolt On Swivel Lock Side Lock, Bolt On Swivel Top Lock, Side Lock, Bolt On Swivel Attachment Types Top Plate, Bolt Hole, Threaded Stem Top Plate Top Plate Top Plate