Product Description
Rigid caster assembly, 6.00 inch diameter by 2.50 inch wide rubber wheel, crowned tread, top plate mount, steel mounting plate, Shore A hardness 70–85, for cart applications. Suitable for -40°F to +180°F ambient environments.
Specifications
Material & Construction
| Wheel Material | Rubber |
| Plate Material | Steel |
Part Numbers
| Manufacturer Part Number | 72MR06407R |
Frequently Asked Questions
Q: What are the specifications for the CA 72-MR06407-R rigid rubber caster?
A: The CA 72-MR06407-R is a rigid plate caster with a 6.00-inch diameter rubber wheel and 2.50-inch tread width. The wheel features a crowned tread design for better directional tracking. The mounting plate is steel with a top plate mount configuration. The rubber has a Shore A hardness of 70-85, and the caster is rated for ambient temperatures between -40 degrees Fahrenheit and +180 degrees Fahrenheit.
Q: What is the Shore A hardness rating for the CA 72-MR06407-R wheel, and what does it mean?
A: Shore A hardness of 70-85 indicates a moderate-hardness rubber compound designed for general-purpose industrial applications. This hardness level provides a balance between durability and shock absorption, suitable for carts operating on hard floors with occasional impact. Softer compounds provide better shock absorption but wear faster, while harder compounds are more durable but provide less cushioning.
Q: What temperature range can the CA 72-MR06407-R operate in?
A: The CA 72-MR06407-R is rated for use in ambient environments from -40 degrees Fahrenheit to +180 degrees Fahrenheit. This makes it suitable for cold storage facilities, outdoor use in winter conditions, and industrial environments with elevated temperatures. Rubber compounds can become brittle in extreme cold or tacky in extreme heat, affecting rolling characteristics outside this range.
Q: How does the crowned tread design of the CA 72-MR06407-R wheel improve performance?
A: The crowned (rounded) tread profile is higher in the center than at the edges. This design improves directional stability and tracking on flat floors, reducing lateral drift during straight-line movement. Crowned treads are commonly used on rigid casters to maintain consistent rolling characteristics across the wheel width.
Q: What is the difference between the CA 72-MR06407-R (rigid) and CA 72-MR06407-S (swivel) rubber casters?
A: Both casters feature identical 6-inch rubber wheels with crowned treads and the same temperature range (-40 to +180 degrees Fahrenheit). The CA 72-MR06407-R is rigid (fixed direction) and recommended for load-bearing positions on carts. The CA 72-MR06407-S is a swivel caster that rotates 360 degrees for directional control and maneuverability.
Q: What surfaces are best suited for the CA 72-MR06407-R rubber wheel?
A: Rubber wheels perform well on concrete, epoxy, tile, and other smooth hard floors. The Crown-tread rubber compound (Shore A 70-85) provides traction and reduces noise compared to cast iron wheels. Rubber wheels may wear faster than cast iron in high-friction environments or on rough, textured surfaces. They are ideal for facilities where noise reduction or floor protection is a priority.