This bearing for H bracket Mechanical Buffalo (MB) model MBSL, H/pivot
Dimension  :  70 mm x 14mm x hole 31mm
Wight            : 30 gm
 
The Bearing 30306 is a tapered roller bearing commonly used in automotive, industrial, and heavy machinery applications. Below is a concise overview based on available information:
 
Specifications:
Type: Single-row tapered roller bearing.
Part Number: 30306 (no common suffixes like 2RS or ZZ, as tapered roller bearings are typically open).
Material: Usually chrome steel (Gcr15); high-carbon steel or specialized alloys for heavy-duty applications.
Load Ratings (approximate, varies by manufacturer):
Dynamic Load: ~60,000 N
Static Load: ~61,000 N
Speed Limits (approximate):
Grease Lubrication: ~5,000–7,000 RPM
Oil Lubrication: ~7,000–9,000 RPM
Cage: Typically steel; designed to handle high radial and axial loads in one direction.
Clearance: Adjustable during installation (set by axial preload or clearance).
 
Applications:
Automotive: Used in wheel hubs, axles, transmissions, and differentials (e.g., trucks, trailers, or heavy vehicles).
Industrial: Found in gearboxes, conveyor systems, and heavy machinery.
Other: Agricultural equipment, construction machinery, or railway applications.
 
Key Features:
Handles high radial and axial loads (in one direction) due to tapered design.
Suitable for heavy-duty, low-to-moderate speed applications.
Requires precise installation to set proper preload or clearance.
Often used in pairs to accommodate axial loads in both directions.