What this part is:

Dodge SER-204-SC setscrew mounted ball bearing unit in a four-bolt square flange cast iron housing for a 5/8 in shaft. Dodge stock number 124099. One complete unit: flange housing with the bearing insert fitted. The insert is a single-row 204-series wide-inner-ring ball bearing with a spherical outer race, self-aligning in the housing bore, locked to the shaft by setscrews in the extended inner ring.

Decoding the designation:

204 — insert series; in the inch range the 5/8 in to 3/4 in shaft group, here bored 5/8 in.

SC — Dodge setscrew locking.

F4B — four-bolt flange housing; Dodge F2B is the two-bolt style.

124099 — Dodge stock number for the assembled unit.

Specifications:

Shaft Size: 5/8 in. Housing Style: four-bolt square flange, cast iron. Bolt Center To Center Length: 2.13 in. Bolt Size: 3/8 in. Locking Method: setscrew. Expansion Type: non-expansion (locating). Rolling Elements: balls, single row. Unit Quantity: 1 Pc.

Dimensions and mounting:

Four-bolt square flange mounting against a face perpendicular to the shaft. Bolt hole centres 2.13 in; bolt size 3/8 in. Design Units: Imperial (inch).

Compatibility and replacement:

Dodge F4B-SC-010 is carried as an alternate designation for this unit. The Dodge F2B two-bolt flange is a different housing style, and the bare insert is a different item from this assembled unit.

Frequently asked questions:

What shaft size does the Dodge SER-204-SC fit?

5/8 in shaft, locked by setscrews in the extended inner ring.

How many bolts mount this flange unit?

Four bolts, 3/8 in size, on 2.13 in bolt centres.

Is this unit expansion or non-expansion?

Non-expansion (locating).