Rubber Shielded 3/4 ID Bearing

Frequently Asked Questions

Q: What does the 3/4 designation mean on this bearing?
A: The 3/4 designation refers to a 3/4 inch inner diameter (ID). This bearing is part of the 6204 size family and features a rubber shield design for basic contamination protection in standard material handling applications.

Q: What is the outer diameter and width of the BS 6204 3/4 bearing?
A: The BS 6204 3/4 bearing has an outer diameter of 1.850 inches (47 mm) and a width of 0.551 inches (14 mm). These dimensions match the standard 6204 metric bearing size family for cross-compatibility.

Q: What protection level does the rubber shield provide?
A: The rubber shield on this bearing provides single-sided or dual-sided contamination protection depending on configuration. Rubber shields deflect large debris and dust but allow some grease migration, making them suitable for general industrial equipment that does not operate in severe wash-down conditions.

Q: Is the BS 6204 3/4 interchangeable with metric 20 mm bore bearings?
A: Yes, the 3/4 inch (0.750 inch / 19.05 mm) ID is very close to the metric 20 mm bore and these bearings are typically cross-referenced. However, verify exact bore dimensions before ordering to ensure proper fit on your equipment shaft.

Q: What is the expected service life and maintenance interval for this bearing?
A: Factory pre-greased bearings with rubber shields typically provide 2000 to 5000 operating hours depending on load, speed, and environmental conditions. Service life is extended if operated in clean, dry environments and shortened significantly in wet or contaminated conditions. Monitor for noise or vibration as early wear indicators.