The Logan air / fluid actuated Bell Housing PTO clutches
are self-adjusting and designed to mount directly to a
diesel or gasoline engine’s flywheel.

The friction disc packs are designed for dry operation.
Actuation is accomplished through either a stationary
cylinder piston arrangement, or through internal shaft
and clutch passages.

The clutch is bored and keyseated for shaft mounting.
Torque is transferred from the disc pack to a geared
drive ring which is attached to the engine’s flywheel.

Logan Clutches – How They Work

Pressurizing the cylinder forces the piston to clamp and lock the
friction and steel separator discs. When pressure is removed, release
springs separate the friction and steel discs, maintaining a running
clearance when disengaged.

Push Button Actuation – Eliminates Mechanical Linkages

Self-adjusting piston travel compensates for any disc wear eliminating
the need for mechanical adjustment (i.e. levers, linkages, and yokes).
The amount of hydraulic or pneumatic pressure applied regulates
the amount of torque transmitted through the clutch. Push-button,
remote activation from a control panel, marine wheelhouse or cab is
now possible.

Standard Specifications:

Standard Logan Bell Housing PTO’s are available in No.0 to No. 7
Size SAE Bells with input torque ratings from 159 Lb. Ft
(216 Nm) to over 6,000 Lb. Ft. (8136 Nm).

Air / Fluid operating pressures range from 100 psi. (6,9 bar)
to 200 psi (13,8 bar) for standard models.

Operating speeds range from 1 to 3,000 RPM.

Modified Standards:

Higher horsepower, torque ranges, speeds, actuation pressures,
and design configurations are available to meet customer’s
specific design requirements.