Bearings from Graphite Metallizing result in six-figure savings:
Trigen-Kansas City Energy Corporation, a Veolia company, provides centrally produced steam and chilled water to customers in the Kansas City, Missouri, central business district and cogenerates electricity. A Floway VU vertical turbine pump captures up to 24,000 gallons per minute of water from the silt-laden Missouri River to feed chillers and steam generators. In the past, particulate in the water caused the bronze-backed rubber bushings to fail after approximately thirty months, requiring the company to spend $60,000 to replace them along with shafts.
Read more in Modern Pumping Today
For more information about Graphite Metallizing, visit http://www.graphalloy.com
GRAPHALLOY Bushings and Bearings
Monday, February 4, 2013
Monday, January 14, 2013
GRAPHALLOY at SEPEM Industries
GRAPHALLOY will exhibit at SEPEM (Salon Services, Equipment, Process and Maintenance) Industries on January 29 - 31, 2013 in Douai, France at Gayant Expo Park. Stop by Stand B3.
Click here for more information.
Click here for more information.
Thursday, January 3, 2013
GRAPHALLOY Provides Advantages in Pump Bushings and Wear Rings
GRAPHALLOY®, a graphite/metal alloy, is used extensively for pump bushings and wear rings. It offers two key advantages for pumping applications:
1. GRAPHALLOY enables pumps that run dry, flash, or handle extremely low viscosity fluids to survive without damage. Numerous case histories and pump manufacturer test results confirm that GRAPHALLOY performs where plastics are unable to stand up and metal parts seize disastrously.
2. GRAPHALLOY enables rings and bushings to be designed with tighter clearances which can improve efficiency, increase output, reduce vibration, throttle seal cavities, or act as a seal backup. GRAPHALLOY is non galling and dimensionally stable and enables pumps to operate at tight fits without the risk of metal-on-metal rubs or seizure.
Click here to learn more about the use of GRAPHALLOY in pumping applications.
2. GRAPHALLOY enables rings and bushings to be designed with tighter clearances which can improve efficiency, increase output, reduce vibration, throttle seal cavities, or act as a seal backup. GRAPHALLOY is non galling and dimensionally stable and enables pumps to operate at tight fits without the risk of metal-on-metal rubs or seizure.
Click here to learn more about the use of GRAPHALLOY in pumping applications.
Tuesday, December 11, 2012
GRAPHALLOY Bearings are FDA Accepted
GRAPHALLOY® bearings are key ingredients for minimal maintenance and uninterrupted production in food contact equipment. The FDA has accepted GRAPHALLOY, a graphite/metal alloy, for use in ovens, conveyors, pumps and mixers.
High heat applications challenge the
life and durability of conventional bearings. In cold, wet
environments, bearings often cannot hold lubrication. Use of GRAPHALLOY
bearings can solve these problems and, as a result, reduce downtime and
lost production.
For more information about the success of GRAPHALLOY in food applications, please read our Pizza Oven Case History and our Seafood Processing Plant Case History.
- Self-lubricating; works without external lubrication
- Operate in extreme temperatures (-450° F to +750° F/-240° C to +400° C)
- Avoid loss of lubricant in steam/pressure washes
- Contain no oil or grease
- Can be immersed in liquids without contaminating food production
- Operate submerged in low viscosity and corrosive liquids
For more information about the success of GRAPHALLOY in food applications, please read our Pizza Oven Case History and our Seafood Processing Plant Case History.
Monday, November 19, 2012
GRAPHALLOY Replaces Ball Bearings In High Temperature Application
GRAPHALLOY® self-lubricating bearings keep the wheels rolling for a manufacturer of specialty powders
When a major manufacturer of alumina powders contacted us because of a high rate of sealed ball bearing failures in their oven carts, we knew GRAPHALLOY bearings would solve the problem.
Sudden stops ruin equipment and material
Our customer manufactures high purity alumina powders and specialty powders designed for a wide range of markets including lighting, watches & jewelry, health & medicine, plasma TV and microelectronics. The manufacturing process for the powders consists of loading pans of powder mixture onto a train of carts which are then driven by an electric motor through a series of ovens. Each cart has four casters, with bushings, that ride on rails into the ovens. It is critical that the carts move through the heating process in a smooth manner, at a constant speed so that the blocks of powder do not break.
The sealed ball bearings on the carts were losing lubrication and sticking due to the high oven temperatures. This was causing the wheels to lock and the carts to come to a sudden stop. The electric motor would continue trying to drag the carts through the oven. As a result, the powder blocks would break and the cart wheels developed flat spots from sliding rather than spinning. Since the carts would not move freely, the electric motor would overload and fail. The carts would then have to be manually pulled through the ovens.
Greaseless GRAPHALLOY Solution
Our engineers reviewed the application and recommended one of our self-lubricating GRAPHALLOY grades to replace the sealed ball bearings. Our customer tested the GRAPHALLOY bearings on two carts. During the test, the customer told us they randomly pushed carts by hand and only two carts moved smoothly when pushed: the carts with the GRAPHALLOY bearings installed. Since the customer changed all his cart bearings to GRAPHALLOY, he estimates saving thousands of dollars annually in replacement parts, maintenance costs, product waste and downtime.
Consider the advantages of GRAPHALLOY for your next application:
- Self-lubricating
- Temperature extremes
(-400° F to +1000° F/-240° C to 535° C)
- Extended operation
- No downtime
When a major manufacturer of alumina powders contacted us because of a high rate of sealed ball bearing failures in their oven carts, we knew GRAPHALLOY bearings would solve the problem.
Sudden stops ruin equipment and material
The sealed ball bearings on the carts were losing lubrication and sticking due to the high oven temperatures. This was causing the wheels to lock and the carts to come to a sudden stop. The electric motor would continue trying to drag the carts through the oven. As a result, the powder blocks would break and the cart wheels developed flat spots from sliding rather than spinning. Since the carts would not move freely, the electric motor would overload and fail. The carts would then have to be manually pulled through the ovens.
Greaseless GRAPHALLOY Solution
Our engineers reviewed the application and recommended one of our self-lubricating GRAPHALLOY grades to replace the sealed ball bearings. Our customer tested the GRAPHALLOY bearings on two carts. During the test, the customer told us they randomly pushed carts by hand and only two carts moved smoothly when pushed: the carts with the GRAPHALLOY bearings installed. Since the customer changed all his cart bearings to GRAPHALLOY, he estimates saving thousands of dollars annually in replacement parts, maintenance costs, product waste and downtime.
Consider the advantages of GRAPHALLOY for your next application:
- Self-lubricating
- Temperature extremes
(-400° F to +1000° F/-240° C to 535° C)
- Extended operation
- No downtime
Thursday, October 25, 2012
High Temperature Damper Solutions
A power company in North Carolina was having problems with their ID fan dampers between the electrostatic precipitator and the stack. The high temperature for the flue gas (approximately 300° F) coming out of the precipitator was baking the grease in the bearing.
This gas contained some fly ash that was causing clutch failures in the damper actuation system and required emergency maintenance to avoid shut down of the boiler. GRAPHALLOY® 845 inserts were installed to replace the ball bearings.
The dampers have run trouble free for more than two years.
This gas contained some fly ash that was causing clutch failures in the damper actuation system and required emergency maintenance to avoid shut down of the boiler. GRAPHALLOY® 845 inserts were installed to replace the ball bearings.
The dampers have run trouble free for more than two years.
Monday, October 8, 2012
GRAPHALLOY Solves Problems in High Temperature Steel Mill Cooling Bed
A Midwestern steel mill was using GRAPHALLOY® bushings for the
horizontal rollers in their cooling beds. The bushings were thriving
under severe heat and water spray conditions.
Because of this success, the mill was considering using GRAPHALLOY flange bearings for another application: the vertical guide rollers along the sides of the cooling beds that were used to keep the hot steel from running off the sides.
These guide rollers remain static until a piece of hot steel slams up against them. At this moment, they are expected to turn instantly to guide the steel back onto the cooling bed. This mill had been using conventional greased rolling element bearings in the vertical guides that were lasting only a few months. GRAPHALLOY proved to be successful on the vertical rollers as well and the mill has since retro-fitted additional lines with GRAPHALLOY.
Because of this success, the mill was considering using GRAPHALLOY flange bearings for another application: the vertical guide rollers along the sides of the cooling beds that were used to keep the hot steel from running off the sides.
These guide rollers remain static until a piece of hot steel slams up against them. At this moment, they are expected to turn instantly to guide the steel back onto the cooling bed. This mill had been using conventional greased rolling element bearings in the vertical guides that were lasting only a few months. GRAPHALLOY proved to be successful on the vertical rollers as well and the mill has since retro-fitted additional lines with GRAPHALLOY.
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