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Warner Electric SFC 1525 Clutch for Workboat Fire Pumps
A leading marine and industrial powertrain manufacturer required a clutch solution for
a new remote PTO assembly for diesel engines. Most marine and industrial transmissions
have one or more PTO locations which only utilize a fraction of the transmission’s
capacity within limited space restrictions.
The Warner Electric SFC-1525 clutch was chosen for the new PTO assembly, which is
driven from the front of the crankshaft on larger diesel engines. The SFC-1525 stationary
field clutch was selected due to it’s size and design, it’s remote electrical activation and
Warner Electric’s reputation for cost-effective reliability. The complete shaft-mounted
assembly consists of an SFC-1525 clutch (with splined hub and adaptor and taper lock
bushings), a torque limiter, a coupling and bearings.
The PTO assembly is designed for oil and gas industry workboats, tugboats, supply
boats and dredging equipment which typically require 300 HP to 500 HP hydraulic and
fire pumps. The new assembly negates the need for an extra engine to drive these large
capacity pumps as many of these boats get refitted with more fuel efficient engines.
The clutch can be engaged in about a second while getting another engine up to speed
would take much longer... a critical advantage when activating a fire pump.
- 700 ft.lbs. (949 Nm)
Taper lock bushings