KEY 5B9974 - Caterpillar

Safety precautions and warnings are provided in this manual and on the product. If these hazard warnings are not heeded, bodily injury or death could occur to you or to other persons.The hazards are identified by the safety alert symbol which is followed by a signal word such as danger, warning, or caution. The "" safety alert symbol is shown below.
Illustration 2 g03028025This safety alert symbol means:Pay attention!Become alert!Your safety is involved.The message that appears under the safety alert symbol explains the hazard.Operations that may cause product damage are identified by "" labels on the product and in this publication.Caterpillar cannot anticipate every possible circumstance that might involve a potential hazard. The safety information in this document and the safety information on the machine are not all inclusive. Determine that the tools, procedures, work methods, and operating techniques are safe. Determine that the operation, lubrication, maintenance, and repair procedures will not damage the machine. Also, determine that the operation, lubrication, maintenance, or the repair procedures will not make the machine unsafe.The information, the specifications, and the illustrations that exist in this guideline are based on information which was available at the time of publication. The specifications, torques, pressures, measurements, adjustments, illustrations, and other items can change at any time. These changes can affect the service that is given to the product. Obtain the complete, most current information before you start any job. Caterpillar dealers can supply the most current information.Part Description
Table 2
Base Metal Cast Iron or Ductile Iron
Hardness N/A Flame Spray Equipment and Procedure
Table 3
Maximum Surface Finish 2.03 Micrometers (80 Microinches)
Mating Part Contact Area & Material Bearing race
Metco Equipment Type 6PII ThermoSpray System
Metco Material 453
Finished Thickness 0.7620 mm (0.030 inch)
Finishing Allowance 0.51 mm (0.020 inch)
Spray Angle As close to 90° as possible
Substrate Pre-Heat Temperature 85° C (185° F)
Substrate Temperature During Spraying Not to Exceed 149° C (300° F)
Rotation/Traverse Device Lathe or turntable
Rotation/Traverse Speed 91.4 SMPM (300.00 SFPM)
Surface Preparation Method Grit Blast
Finishing Method Machine
Machining Equipment Type Lathe
Recommended Cutter Grade TRW 716 1058/883 or equivalent
Table 4
Flame Spray Process (6P) Procedure Check List
Clean Part Degrease in hot caustic solution
Undercut Not required
Chamfer All edges - 45° x 7.6200 mm (0.300 inch)
Remove Oxide Use clean emery paper or wire wheel or flapper wheel
Mask for Blast Metal mask or duct tape
Blast Equipment Suction cabinet
Grit Type and Size G-25 angular steel
Blast Air Pressure 620 kPa (90.0 psi)
Blast Nozzle to Work Distance 63.5 mm (2.5 inch)
Remove Blast Mask Remove
Mask for Spray Use blast mask and METCO Anti-Bond
Spray Equipment Type 6PII ThermoSpray System
Nozzle 6P7C-K "K" nozzle
Air Capacity/Pressure 6P-3/Cooling air - 140 kPa (20.0 psi)
Extension N/A
Air Jets/Pressure N/A
Oxygen Pressure 206.8 kPa (30 psi)
Oxygen Flow 1190 L/h (42.0 cfh)
Fuel Gas Pressure 100 kPa (15.0 psi)
Fuel Gas Flow 1415 L/h (50.0 cfh)
Carrier Gas Pressure 380 kPa (55.0 psi)
Carrier Gas Flow 1050 L/h (37.0 cfh)
Spray Rate/Build Up 4.5 - 5.5 kg (10.00 - 12.00 lbs)per hour, 0.1016 - 0.1524 mm (.004 - 0.006 inch)
Gun to Work Distance