System Pressure:
Over or Under Pressurization The catalog rated torque capacity of Logan Clutches is directly proportional to the operating pressure.
Maintaining the lowest pressure possible to transmit the desired
torque will enable the clutch to run cooler and extend the lifespan of
the internal working bearings (if applicable) and other components.
A pressure regulating valve should be specified in the system to
prevent over or under-pressurization of any Logan Clutch PTO.
The Logan warranty does not cover clutch failure due to over or
under-pressurization.
The highest pressure values in the torque tables are the suggested
maximum ratings for Logan Clutches.
Clutch lubrication:
The clutch cylinder and piston bearings, and shaft
pilot bearings are greased and sealed at the factory - no additional
lubrication is required. Clutch shaft carrier bearing lubrication: Main
clutch shaft carrier bearings are factory greased for the first 100 hours
of operation. A small amount of grease at the inner & outer bearing
shaft seals of the clutch shaft carrier bearings is normal.
Directions:
After 100 hours of operation, remove cover plate, pump
in approximately 5 ½ cu in./ 90ml of fresh No. 2 Lithium based grease.
Rotate the shaft (by hand if possible) until fresh grease is seen coming
thru seals covering bearings on main shaft. Use a cloth to clean
up any excess grease. Re-install the cover plate and run the clutch
for 10 minutes at 50% of rated speed. Remove cover plate and clean
up any extra grease from inside of housing. Replace cover plate and
operate normally.
CAUTION:
Do not over-grease bearings. Excessive grease may cause
bearing overheating and premature failure. In addition, discs and
|
opposing surfaces must also be free of any grease in order to avoid
clutch slippage or reduced torque.
Clutch Break-in:
For initial start up, with the power source operating
at 700 to 1000 rpm, cycle/engage the clutch at a rate of once
every 10-15 seconds for 10-20 cycles, not exceeding 50% of rated
torque capacity. In severe duty applications, allow additional clutch
engagements at moderate loads and reduced RPM’s before applying
maximum torque and RPM. Torque values are based upon dry disc
packs having full contact between surfaces.
Torsional Damping Devices for Logan Products:
pecial consideration
should be given to torsional compatibility when incorporating any
Logan product into an application.
Noise, vibration, damage and premature failure of Logan PTO’s can
be directly attributed to incorrectly specified torsional damping
devices. It is the buyer's responsibility to specify this option, which
can result in additional cost and a possible increase in installation
length. Logan accepts no liability for torsional clutch failure. Finite
element analysis or field testing for torsional compatibility rests solely
with the assembler and user.
Logan Clutch Corporation reserves the right to modify product
specifications and designs without notice and without incurring
obligations. All rotating components present a potentially hazardous
condition and should be guarded in accordance with OSHA requirements
and other applicable laws, regulations and industrial standards.
Logan can accept no liability for personal injury, loss of life, or damage
or loss of property due to the failure of the buyer or user to improperly
apply Logan Products.
|