The rubber on Cast Iron Wheel Size 4" & 400 lbs Per CasterPlate Size: 4" x 4-1/2"
4" (Inch) Mold On Rubber Wheels is one of the oldest and most well-known types of caster in the industry. These wheels have a Rubber tread vulcanized to a heavy-duty industrial cast iron/steel core. These wheels offer a very shock-absorbing semi-cushioned ride, rolls easily over small debris, rough floors, cracks, and joints. The rubber on Iron wheels are economically and affordably priced. Great floor protections and a very quiet rolling operation. These wheels work great in outdoor environments; however cast iron cores can rust; if this is an issue look at using aluminum or plasticcore wheels although you will lose some of the shock-absorbing features if you do so. The treads on Mold on Rubber Wheels have a softer 80 Shore A Durometer and a Temperature range: -40° F to 180° F. These wheels come standard with a 3/4" Roller bearing with a 1/2" Spanner Bushing to fit your standard 1/2" axle/bolt.
• Rubber tread vulcanized to heavy-duty cast iron core. • Offers shock absorbing semi-cushioned ride, rolls easily over small debris, rough floors, cracks, floor joints, etc. • Provides good floor protection and quiet rolling operation. • Economically priced cushion wheel. • Works well in outdoor environments; however cast iron core can rust; if this is an issue look at using aluminum or plastic core wheels. • Temperature range: -40° F to 180° F.