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The SKF 7409 BM, a vintage part, manufactured by major brands like SKF. A single-row angular contact ball bearing with a 40-degree contact angle.
Bore Diameter (ID): 45 mm
Outside Diameter (OD): 120 mm
Width (Thickness): 29 mm
Contact Angle: 40° (indicated by the B suffix), optimal for high axial loads
Cage Material: Machined brass (indicated by the M suffix), providing excellent strength and durability at high speeds
Speed Limit: ~7,500 RPM
Load Capacity: ~85.2 kN dynamic / ~55 kN static
Suffix Breakdown
B: 40° contact angle.
M: Machined brass cage, ball-centered.
G / GA / GB / GC: Often appended to the suffix (e.g., 7409 BGBM or 7409 BM/DGB) to denote universal matching design or pre-defined internal clearance/preload for mounting in pairs.
