DodgeFour-Bolt Split Cast Iron Pillow Block Journal Bearing – 1-15/16 in Bore, Tin Babbitt Sleeve

Product Description

What this part is

Dodge P4B-BAA-115, Dodge item number 230050, is a four-bolt pillow block journal bearing. Bearing Type: Mounted plain journal (sleeve) bearing. Housing Style: Four-bolt pillow block, split cast iron. Bore / Shaft Size: 1-15/16 in (49.21 mm). Insert Material: Tin babbitt sleeve. Expansion Type: Expansion (float). Lubrication: Grease. Rolling Elements: Plain sliding sleeve.

Decoding the designation

P4B — four-bolt pillow block housing, bolted down to a horizontal base with the shaft running parallel to that surface.

BAA — babbitted angle-mount journal bearing, a split cast iron block carrying a tin babbitt sleeve rather than a rolling-element insert.

115 — bore code for a 1-15/16 in shaft.

What these specs mean in practice

Insert Material: Tin babbitt. A babbitt liner is deliberately softer than the shaft, so grit embeds in the liner instead of scoring the journal and the sleeve wears in preference to the shaft. That makes a babbitted block the long-service choice on slow, heavily loaded line shafts, mill drives and fan shafts, where a rolling element would brinell. Bearing Type: plain journal, so load is carried on a continuous oil or grease film and the block runs quietly under shock.

Housing style and bolt pattern

Housing Style: Four-bolt pillow block, split cast iron. The cap lifts off, so the sleeve is inspected, shimmed or replaced without pulling the shaft out of the machine — the practical reason a split block is specified on a long installed shaft. Four fixing points at the base spread the load into the foundation.

Fitting notes

Expansion Type: Expansion (float). The shaft moves axially through the sleeve as it grows with temperature, so this position takes radial load while a fixed block at the other end holds axial location. Relubrication: grease lubricated through the housing fitting.

Quantity and configuration

Unit Quantity: 1 Pc. Complete pillow block — split cast iron housing with cap and the babbitt sleeve fitted.

Interchange guidance

Part Number: P4B-BAA-115. Base Number: 230050. Searchable variants: P4BBAA115, P4B BAA 115, P4B-BAA115. Neighbouring sizes in the same series are the P4B-BAA-203 (2-3/16 in, item 230053) and P4B-BAA-215 (2-15/16 in, item 230062). The Dodge P4B-BAR-115, item 004060, is the ring-oiled execution at the same bore.