Tuthill P603-8 Roller Bearing for Rotary Lobe Pump Shafts
The Tuthill P603-8 is a genuine roller bearing for Tuthill rotary lobe process pump bearing housings. In a rotary lobe process pump the bearings are mounted in their own carriers outside the product stream, so they run in gear case oil rather than in whatever is being pumped. It also means bearing condition is a maintenance matter rather than a consequence of what went through the pump.
Roller bearings sit at the drive end of a rotary lobe pump, where the radial load from the drive and the timing gears is highest, and the parts list calls for two of them. Replacing them in pairs keeps the shaft centered, which is what holds the impeller to housing clearance the pump depends on. Press a new bearing on by its inner race only. Driving it on through the outer race puts the load straight through the balls and will brinell a new bearing before it has turned once.
Key Features
- Genuine Tuthill roller bearing
- Direct replacement for Rotary Lobe Pump Bearings
- Mounted outside the product stream in its own carrier
- Parts list calls for 2 per pump
- Standard and high temperature grades published under the same part family
- Replaced as a pair so the shaft stays centered
Applications
- Viscous and abrasive slurry transfer
- Corrosive acid and chemical process duty
- Fluids carrying suspended solids that must not be sheared
- Heavy process oils, resins and adhesives
- Scheduled overhaul of Tuthill rotary lobe process pumps
- Critical spares holding for continuous process plant
Specifications
- Brand: Tuthill
- Manufacturer Part Number: P603-8
- Part Type: Roller Bearing
- Fits: Tuthill rotary lobe process pump bearing housings
- Quantity Required: 2 per pump
- Condition: New
Frequently Asked Questions
Q: What does a failing bearing sound like?
A rumble that rises with speed, often with heat at the bearing housing. Left alone it becomes impeller contact inside the pump.
Q: Is the bearing greased or oil fed?
That depends on the build. Grease fittings are listed on the parts list, and gear case oil serves the timing gear end.
Q: Should both bearings be changed at once?
Yes. A new bearing running against a worn one will not hold the shaft where the clearance setting expects it.
Q: How do I fit it without damaging it?
Press on the inner race only. Never hammer a bearing on and never press through the outer race.
Not sure this is the right part? Send us a Picture of the Pump Plate on your pump and the CLR Marine team will confirm the correct roller bearing.
CLRMarine
