Cooper02-BCP-207-EXComplete Split Cylindrical Roller Bearing Pillow Block Unit, 2-7/16 in Bore, Heavy-Duty 02 Series, Expansion Type

Product Description

What this part is

A complete Cooper split cylindrical roller bearing pillow block unit for a 2-7/16 in shaft, heavy-duty 02 series, expansion type. Every component — inner race, outer race, cage and roller assembly, cartridge and housing — is split into halves, so the whole unit assembles around the shaft rather than sliding on over the end of it.

In Cooper’s nomenclature the configuration letters read as B + C + P: Bearing, Cartridge, Pedestal, which Cooper defines as a complete pillow block. A Cooper flange unit carries a different code: BCF for a round flange or BCDF for a square flange.

Decoding the order code

02: series, heavy duty, rather than a size or a material code. B: bearing, the split cage, roller, inner race and outer race assembly. C: cartridge, the split cartridge halves and seals. P: pedestal, the split housing base and cap; a P-only code such as P 04 is the pedestal on its own. 207: bore, with the last two digits in sixteenths of an inch, so 2-7/16 in. EX: expansion type, with a plain outer roller track, so the bearing carries radial load only, the inner race is clamped to the shaft and the roller set is free to move axially along the outer track. The fixed alternative is GR, which carries radial and axial load.

What is in the box

The complete assembly, in three sub-assemblies: bearing 02 B 207 EX, cartridge 02 C 207 EX, and pedestal P 04. Cooper sells all three separately, and 02-BCP is the code covering all of them. A 02-B-207-EX is the bearing only, with no cartridge and no housing.

Why split bearings exist

A split bearing costs several times what an equivalent solid bearing costs, and the justification is downtime. Fitting a solid bearing to a mid-shaft position means either sliding it the length of the shaft past every obstruction, or uncoupling and lifting the shaft out. On a long conveyor drive, a fan shaft, a crusher or a marine propeller shaft, that can mean days of work and the removal of adjacent gearboxes, couplings and sheaves.

A Cooper split unit assembles around the shaft in situ: the cap comes off, the halves drop in, the cap goes back on. Replacement time falls from days to hours, and no adjacent equipment moves.

Expansion rather than fixed

An expansion bearing allows the shaft to grow and shrink axially through the bearing, and it carries no axial load.

A steel shaft grows roughly 0.0000065 in per inch per °F, so a 20 ft shaft rising 60 °F grows about 0.09 in. The standard arrangement is one fixed (GR) bearing locating the shaft axially, and every other bearing on the shaft expansion (EX).

Published data

Bore: 2-7/16 in. Series: 02, heavy duty. Housing style: split pillow block / pedestal, 2-bolt base; Cooper’s separate BC4P code covers 4-bolt bases on 02-series sizes 211 to 400, so 207 is 2-bolt. Configuration: expansion, radial load only. Pedestal: P 04. Bearing type: split cylindrical roller. Weight: approximately 16.9 kg / 37.3 lb, a distributor figure. Cooper’s standard seal is an ATL aluminium triple-labyrinth seal up to 12 in bore; some listings of this part carry an additional AT or ATL suffix.

Interchange guidance

Cross-references: 02-BCP-207-EX, 02BCP207EX, 02 BCP 207 EX, 02BCP207-EX, 02-BCP-207EX, 02 BCP 207 EX AT. Components: bearing 02 B 207 EX, cartridge 02 C 207 EX, pedestal P 04. Fixed equivalent: 02-BCP-207-GR. Flange versions of the same bearing: 02-BCF-207-EX (round flange), 02-BCDF-207-EX (square flange). Cooper Split Roller Bearings is part of the SKF Group, so SKF may quote against Cooper numbers.