Dodge124199Two Bolt Flange Ball Bearing Unit, 5/8″ Bore, Cast Iron, Set Screw Locking, Non-Expansion — Complete Unit

Product Description

What this part is

A Dodge F2B-SC-010, part number 124199: a complete two-bolt flange-mounted ball bearing unit with a 5/8 in bore. Complete means housing and bearing together — a cast iron flange housing with a ball bearing insert already fitted, ready to bolt on.

A flange unit exists to support a shaft that passes through a wall, a plate or a machine frame, with the bolts going into that vertical surface. It is the counterpart to a pillow block, which bolts to a horizontal base alongside the shaft. A mounting surface perpendicular to the shaft calls for a flange unit; a parallel one calls for a pillow block. That single geometric fact is usually what decides the purchase.

Decoding the order code

F2B: Dodge’s two-bolt flange housing designation. F4B is the four-bolt square flange; P2B is the two-bolt pillow block.

SC: Dodge’s set-screw ball bearing insert series.

010: bore size in sixteenths of an inch, 10/16 in = 5/8 in. The whole Dodge SC range reads off the number — 012 is 3/4 in, 104 is 1-1/4 in, and so on.

124199: Dodge’s stock number, and the one most distributors and plant systems list against.

Non-expansion is a specification, not a default

A non-expansion (fixed) unit holds the bearing outer ring axially in the housing, so the shaft cannot move lengthwise through it. An expansion unit leaves the outer ring free to slide a controlled amount in the housing bore, so the shaft can grow and shrink.

Every shaft supported at two points takes one fixed end and, if it changes length, one free end. Shafts change length for ordinary reasons: friction heat, a hot process, ambient swing between a winter night and a summer afternoon on outdoor equipment, or simply a long shaft. With non-expansion units at both ends of a shaft that grows, the thermal load has nowhere to go and passes straight into the bearings as axial thrust they were never rated for — hot bearings, wrecked seals and premature failure, which presents as a bearing quality problem when it is a specification problem.

This unit is therefore the located end of a shaft. On a short, cool, indoor shaft two fixed units are usually tolerated.

Set-screw locking and standard duty

Set screws are the simplest and cheapest way to lock an insert to a shaft: screws in the inner ring bear directly on the shaft. For unidirectional light and medium duty they are entirely adequate and they make installation and removal quick. Where they struggle is reversing rotation and shock load, because the inner ring can creep on the shaft and once it starts to creep it polishes its own seat. For those duties a Dodge eccentric or concentric collar insert is the more secure choice, and the housing is often the same.

Standard duty places this in the middle of Dodge’s range. It suits fans, small conveyors, agricultural equipment, ventilation and light process machinery at a 5/8 in shaft — the sort of position where the shaft is small, the load is modest and cost matters. Where a 5/8 in shaft carries a serious load, a heavier series or a roller-bearing unit is the answer.

The cast iron housing deserves a word too. Cast iron is rigid, damps vibration well and is dimensionally stable, which is why it remains standard for mounted bearings. It is also brittle, and will crack before it bends.

Published data

Bore: 5/8 in (0.625 in).

Housing style: Two-bolt flange.

Housing material: Cast iron.

Duty rating: Standard duty.

Locking method: Set screw.

Expansion type: Non-expansion (fixed).

Insert type: Ball bearing.

Insert outer ring: Spherical.

Bolt holes: 2.

Bolt centre to centre: 3.00 in.

Seal type: Double rubber seal.

Lubricant: Grease.

Item weight: 0.70 lbs.

Harmonization code: 8483.20.40.40.

Quantity and configuration

One complete unit — cast iron housing with the ball bearing insert already fitted. Shafts use them in pairs.

Interchange guidance

Search forms include 124199, Dodge 124199, F2B-SC-010, F2BSC010, F2B SC 010, F2B-SC-10, F2BSC10. Related Dodge units: F4B-SC-010 (four-bolt square flange, same bore and insert), P2B-SC-010 (two-bolt pillow block, same bore and insert), and the expansion-type equivalent for the free end of the shaft. Same-envelope 5/8 in two-bolt flange units are catalogued by Sealmaster (SFT-10, SF-10 and FB-10 families), Browning (VF2S-210), Link-Belt (now Regal Rexnord), SKF (FYT 5/8 TF), NTN (UCFLU-5/8) and Timken. Verify bore, bolt-hole spacing, duty rating, locking method and expansion type before treating any of them as a drop-in — the bolt pattern in particular is not standardised across brands. The Dodge brand has passed through Rockwell, Reliance, Baldor and ABB ownership and now trades as Dodge Industrial, so machines specified under any of those names are still supported under Dodge numbers.