Product Description
CM4-6306 Bearing Assembly is a sealed radial ball bearing designed for manual pallet jack wheel applications, featuring a 30 mm bore, 72 mm outer diameter, 19 mm bearing width, double rubber seals, and construction from high-carbon chromium steel for durability in heavy-duty material handling environments.
Specifications
Dimensions
| Bore Diameter | 30 mm |
| Outer Diameter | 72 mm |
| Bearing Width | 19 mm |
Material
| Race Material | SAE 52100 high-carbon chromium steel |
| Cage Material | Pressed steel |
| Seals | Double rubber seals |
| Hardness | Rockwell C58–64 |
Performance
| Maximum Rotational Speed | 10,000 RPM (grease lubrication) |
| Lubrication Type | NLGI Grade 2 lithium grease |
| Application | Manual pallet jack load and steering wheel applications |
Frequently Asked Questions
Q: What are the bore and outer diameter dimensions of the CM4-6306 bearing?
A: The CM4-6306 bearing assembly has a 30 mm bore diameter, a 72 mm outer diameter, and a 19 mm bearing width. These dimensions are standard for load wheel applications on manual pallet jacks from Crown, Toyota, and Raymond models. Verify your equipment wheel hub bore matches the 30 mm bore before ordering.
Q: What material and construction does the CM4-6306 use?
A: The CM4-6306 is manufactured from SAE 52100 high-carbon chromium steel races with a pressed steel cage. It features double rubber seals for contamination protection, Rockwell hardness of C58–64, and is rated for a maximum rotational speed of 10,000 RPM under grease lubrication. This construction provides durability for heavy-duty manual pallet jack wheel environments.
Q: What pallet jack models does the CM4-6306 bearing fit?
A: The CM4-6306 is designed for manual pallet jack load and steering wheel applications. It is compatible with multiple Crown, Toyota, and Raymond pallet jack models using 30 mm bore hubs and 72 mm OD wheel assemblies. Confirm the exact model and serial range with your equipment documentation before ordering to ensure compatibility.
Q: How long does the CM4-6306 bearing typically last?
A: Bearing lifespan depends on load, usage frequency, environment, and lubrication maintenance. The double rubber seals on the CM4-6306 help protect against dirt and moisture intrusion, extending service life. High-carbon chromium steel construction resists wear in typical material handling environments. Replace the bearing if you observe increased noise, resistance, or play in the wheel during operation.
Q: What is the ABEC grade and lubrication type for the CM4-6306?
A: The CM4-6306 comes factory pre-lubricated with NLGI Grade 2 lithium grease. It is designed for grease lubrication at up to 10,000 RPM. Do not over-grease, as this can increase drag and heat. Standard field maintenance involves periodic inspection of the seals and replacement only when bearing performance degrades.