Berkeley B85403 10-Inch SAE Flywheel Coupling — UnitedBuilt Equipment Skip to content
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Elastomer Hub Coupling 10" 1 - 3/8" - 10T Vulkan, Berkeley B85403 - UnitedBuilt Equipment

Berkeley B85403 10-Inch SAE Flywheel Coupling, 1-3/8-Inch 10T

SKU 0011883
Brand Berkeley
Availability:
1 in stock | Available on backorder
Save 34% Save 34%
$1,435.00
$1,435.00 - $1,435.00
$1,435.00
$950.00
$950.00 - $950.00
$950.00

Product Images

Images are for representation only and may differ from the actual product.

The Berkeley B85403 is a wide-RPM-range SAE engine-mount flywheel coupling with an elastomer-mounted hub. It transmits power from a compatible engine flywheel to the pump shaft in Berkeley SAE-mounted centrifugal pump installations.

B85403 is designed for a 10-inch clutch-size arrangement and a 1-3/8-inch, 10-tooth pump-shaft spline. Its listed outside diameter is 12-3/8 inches, distinguishing the physical coupling diameter from the nominal 10-inch clutch size.

Key Features

Feature Details
SAE Engine-Mount Design Couples a compatible engine flywheel to a Berkeley pump shaft
Elastomer-Mounted Hub Supports smooth power transmission and helps isolate torsional vibration
Wide-RPM-Range Configuration Listed in Berkeley’s wide-RPM-range coupling table
10-Tooth Spline Designed for a 1-3/8-inch, 10T pump shaft
R Rating 7 Coupling rating used when evaluating pump power demand
Genuine Berkeley Part Manufacturer part number B85403

Product Specifications

Specification Details
Manufacturer Pentair Berkeley
Manufacturer part number B85403
Product type SAE flywheel coupling
Coupling design Wide RPM range
Hub mounting Elastomer mounted
Nominal clutch size 10 in.
Shaft spline diameter 1-3/8 in.
Spline count 10 teeth
Coupling R rating 7
Store SKU 0011883

Published Coupling Dimensions

Dimension Published value
Mounting-hole quantity 8
Mounting-hole size 3/8-16 UNC
Outside diameter 12-3/8 in.
Bolt circle 11.62 in.
Dimension F 4.47 in.
Dimension G 2.13 in.
Dimension H 2.75 in.

Selection Requirements

Check Requirement
Flywheel dimensions Must match the applicable Berkeley SAE dimensional table
Pump shaft Must accept a 1-3/8-inch, 10T spline
Coupling capacity R rating must be greater than the calculated pump demand number
Torsional compatibility Engine, pump, and coupling combination must be evaluated by the assembler
Pilot bearing Must not interfere with the pump shaft
Complete pump or engine Not included

Selection note: Confirm the engine flywheel dimensions, pump-shaft spline, required coupling rating, operating speed, and torsional compatibility before ordering. The “10-inch” designation refers to clutch size; Berkeley lists the coupling outside diameter as 12-3/8 inches.