Logan Bell Housing PTO Hydraulic and Pneumatic Actuation

Hydraulic Actuation:

Operation: Logan Bell Housing PTO’s require a 3-way normally closed operating valve with a system flow rate of 2 gpm (7.5 liters) to ensure proper response time during clutch actuation; (if the solenoid is not activated, fluid will not pass through the valve).

Gen. I and Gen. III Actuation: A pressure switch must be installed in the inlet line to ensure that a minimum of 150 psi (10.3 bar) and a maximum of 250 psi (17.2 bar) is available prior to clutch engagement. Pressures exceeding 250 psi (17.2 bar) may cause back plate deflection and premature clutch failure. A 20-micron filter element should also be installed in the supply line, before the valve, to minimize excessive dirt, oil, and moisture.

Gen. II Actuation: A pressure switch must be installed in the inlet line to ensure that a minimum of 275 psi (10.3 bar) and a maximum of 350 psi (17.2 bar) is available prior to clutch engagement.

If a hydraulic source is not readily available on your equipment, Logan suggests using a hydraulic pump capable of producing 2 gpm at 250 psi (17.2 bar); for Gen I and Gen II clutches, we recommend a 2 gpm pump at 350 psi. (24 bar).

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Pneumatic Actuation

Operation: Logan Bell Housing PTO’s require a 3-way normally closed operating valve to function properly, (if the solenoid is not activated, air will not pass through the valve). A pressure switch must be installed in the inlet line to ensure that a minimum of 100 psi (6.8 bar) is available prior to clutch engagement. A 20-micron filter element should also be installed before the switch to minimize excessive dirt, oil and moisture.

If an air source is not readily available on your equipment, Logan suggests using an air compressor capable of producing
0.14 SCFM at 100 psi (6.8 bar).

Where Used:

Diesel or Gasoline Engine Powered Equipment
Industrial Drives / Gensets
Mobile Equipment
Blowers, Vacuums, Fans
Leaf and Debris Collection
Tree and Brush Chippers
Snow Removal Equipment
Marine Propulsion and Auxiliary Gensets

Advantages:

Air or Fluid Actuated for Remote, sofstart® Activation
Self-Adjusting Disc Pack
Over shaft actuation – no rifle drilling of shaft required
Pilot Bearing – Field retrofits within existing mechanical PTOs
Release springs in disc pack to maintain running clearance during disengagement
For in-line and side-load applications

Logan Hydraulic or Pneumatic Start-up Kits

The Logan Hydraulic or Pneumatic Start-up kits are designed to simplify Logan clutch installation and to ensure reliable and accurate engagement of the Logan PTO.

Pneumatic Valving:

Logan offers a solenoid-activated, normally closed, 3-way directional control valve with a 3/64” inlet and outlet port. Valves are available in 12 or 24 volt DC.

Hydraulic Power Packs:

For vehicles that are not equipped with an air or fluid source, Logan does offer a power pack kit. Consult Logan factory for more details.

Actuation Pressures:

Air or hydraulic operating pressures range from 100 psi. (6,9 bar) to 200 psi. (13,8 bar) for Generation I and Generation III models and 320 psi. (23 bar) for Generation II Models.

Manifolds: Logan offers fluid and air actuated valve manifolds complete with gauge and pressure switch to ensure reliable and accurate engagement of the Logan PTO

Power Packs: Logan Hydraulic Power Packs are available for machines not equipped with a fluid source, and can be operated by a 12 or 24 VDC power supply.