Roper Pump G5-610 Carbon Bearing for A Series 005 to 03
The Roper G5-610 is the carbon journal bearing for the smallest A Series gear pumps, the 005 through 03 displacement sizes. Carbon is chosen where the liquid being pumped is thin and non-abrasive and therefore a poor lubricant. It is self lubricating, it runs against a hardened shaft without picking up material the way a softer metal can, and it survives the brief moments of marginal lubrication that a light solvent or a low viscosity fuel inevitably produces.
The trade off is that carbon is a brittle material. It will not tolerate being tapped into a bore with a hammer, and it will chip if it is loaded on an edge, so a carbon bearing has to be pressed in square with a flat faced driver that bears on the full end face. It is also the wrong material for abrasive service, where grit embeds in it and turns the bearing into a lap that wears the shaft. If your pump handles anything with solids in it, the iron or bronze options exist for that reason. Keep the suction clean, keep the pump wet, and a carbon bearing will outlast most of the alternatives on light duty liquids.
Key Features
- Genuine Roper Pump Company journal bearing, part number G5-610
- Carbon construction for thin, non-abrasive, low lubricity liquids
- Fits the small A Series pumps in the 005 through 03 displacement sizes
- Self lubricating and tolerant of brief marginal lubrication
- Runs against a hardened shaft without picking up material
Applications
- A Series gear pumps in the 005, 01, 02 and 03 sizes
- Light solvent and thin fuel metering and transfer
- Pressure lubrication on small close coupled packages
- Additive dosing and small volume circulation
- Overhaul of small frame Roper gear pumps
Specifications
- Brand: Roper Pump Company
- Part Number: G5-610
- Part Type: Journal bearing
- Material: Carbon
- Fits: A Series gear pumps, sizes 005 through 03
- Best Suited To: Thin non-abrasive liquids, not recommended where solids are present
- Condition: New
Frequently Asked Questions
Q: Why would I choose carbon over bronze?
Because of what is in the pipe. Thin low lubricity liquids leave too little film for a metal bearing to rely on, and carbon copes with that far better than bronze does.
Q: How should a carbon bearing be installed?
Pressed in square with a flat driver across the full end face. It is a brittle material, so anything that loads one edge will chip it before it is even running.
Q: Can carbon handle high temperature service?
It has a lower temperature ceiling than the metal options, so on hot product check the rating before choosing it. Where heat is the governing factor, bronze or iron is usually specified instead.
Q: What ruins a carbon bearing fastest?
Grit. Abrasive particles embed themselves in the bearing face and then cut the shaft, so good suction strainer discipline matters more with carbon than with any other bearing material.
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 carbon bearing before you order.
CLRMarine
