Spicer Drive Axles Application Guidelines - Manual (Page 34)

AXAG-0200 June 2009 34
Oil Field
Vocational Description
n Movement of production related products, supplies and tools between job sites
n Movement of processing equipment and laboratories on job sites
n Low mileage operation on road surfaces made of concrete, asphalt, maintained gravel, crushed rock or hard packed dirt
n High horsepower engines common
n Vehicles are typically 6x4 or 6x6 straight trucks or tractors with permanently mounted equipment for well servicing or
exploration
Typical Vehicle Types
Cementing Vehicle Geophysical Exploration
Demolition Rigging Truck
Drill Rig Tanker
Fracturing Truck Winch Truck
Service Definitions
Operation 1
Up to 25% job site operation, minimum 3 miles between stops, exclusive operation on prepared road sur-
faces. Grades of up to 12%.
Operation 2
Full time job site operation, frequent starts and stops, fully loaded going/empty return, low mileage.
Grades of up to 12%.
General Requirements and Recommendations
•
Additional ratios may be available and would require individual application approval.
•
Double reduction models offer added durability and gross weight capability in severe service applications where higher
numerical ratios are required.
•
Maximum allowable torsional driveline acceleration is 300 rad./sec./sec. within the defined operating speed range of the
engine manufacturer. The use of a soft dampened clutch with a manual transmission is recommended.
•
Single vehicle retarders can be approved with all axle models, provided the product selected meets all the application
requirements of the Oil Field vocation.
•
Use of dual retarders (engine, exhaust, transmission, or electromagnetic) is only approved with tandem and tridem axle
models with gross axle weight ratings of 46,000 lb or higher and maximum allowable retardation is limited to 100% max.
rated engine torque.
•
All Electromagnetic retards, such as Telma, require individual application approval by the Dana CVP Application
Engineering Department.
•
This Guideline applies to vehicles operating in the U.S.A. and Canada only. Operation in other countries requires individual
approval by the Dana CVP Application Engineering Department.
•
For optimum axle shaft retention to the hub, .750” dia. studs or .625” dia. studs with tapered dowels are recommended for
tandem / tridem axles with GAWR ratings of 44,000 lbs and above. OEMs are responsible for axle shaft retention on all units
not dressed by Dana. See page 80 for illustration.
•
Localized sources of heat, such as engine exhaust, that may cause high axle operating temperatures or reduced seal life are
to be avoided. Maximum intermittent drive axle surface temperature measured at input seal not to exceed 300° F for more
than 30 minutes. Maximum continuous operating temperatures not to exceed 250° F.
•
Dana CVP application approval is required for all vehicles with hybrid power systems.
Housing Structural Ratings
(see table of contents)