CG-1 Hydrodynamic Bearing V1

CG-1 Hydrodynamic Bearings

www.hightempbearings.com 1

When Babbitt metal lined hydrodynamic bearings came into existence in the 1800s, designers knew that the limiting factor of their design was due to materials. The metals and lubricants of the day limited the safe operation of the bearings to around 200 F. The designs and parameters of the 1800s have languished without innovation, despite huge leaps made in engineering technology.

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Old Concept Re-Invent Manufacture

HTB corporation has taken the successful aspects of the traditional sleeve oil bearing, such as ring oil lubrication and self-aligning capability, and eliminated its weakness through modern materials, lubricants and engineering analysis.

By eliminating the use of Babbitt metals, conventional lubricants, and low strength materials, the CG-1 hydrodynamic bearing can operate continuously at temperatures of 400 ⁰F. This eliminates the need for external cooling, improves overall strength, and enhances mechanical precision.


Every bearing that is manufactured by HTB has been engineered for the customer’s application. Our proprietary design tool, allows for rapid evaluation of the exact specifications needed to ensure optimum performance.

Our analytics package uses proven fluid dynamic methods combined with experimental data. The result is predictable performance for every application.

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•Minimum oil film thickness•Damping and stiffness coefficients•Estimated bearing critical speed•Estimated operating temperature•Journal load angle•Energy dissipation

•Running clearance•Lubricant•Design load•Design speed

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Dodge RTL SleeveOil Bearing: CG-1 Hydrodynamic Bearing:

Liner: Babbitt Metal , PV=18,000

Liner Core: 10 Ksi Cast bronze

Housing: 20 ksi cast gray iron

Maximum safe operating temperature: 212 F

External water supply for cooling required: Yes

Mass For Typical 3-7/16” Pillow block: 255 lbs

Overall Bearing Length: 10.00 inches

Self aligning bearing: Yes

Bearing Seat: 180 Degrees

Expansion/Thrust take-up: Yes

Ring or Circulated Oil: Yes

Customer Bearing Sizing Software: Yes

Accessories Available: Yes

Liner: High Temperature Polymer, PV=300,000

Liner Core: 60 Ksi Ductile Iron

Housing: 40 ksi cast gray iron

Maximum safe operating temperature: 400 F

External water supply for cooling required : No

Mass For Typical 3-7/16” Pillow block: 180 lbs

Overall Bearing Length: 10.00 inches

Self aligning bearing: Yes

Bearing Seat: 360 Degrees

Expansion/Thrust take-up: Yes

Ring or Circulated Oil: Yes

Customer Bearing Sizing Software: Yes

Accessories Available: Yes

The CG-1bearing saves thousands of dollars during construction and over its lifetime by safely running hotter. This eliminates the need for external cooling lines, radiators, or chillers and gives the OEM the ability to reduce shaft diameters. The bearing has fewer parts, and is mechanically tougher, making installation and service requirements less intensive.

Our liner is20x more resistant than standard Babbitt metal to liner wipe failure based on taber abrasion tests. It obtains a much higher surface finish than Babbitt, reducing the risk of surface asperity contact in the event of oil supply interruption. Our liner surface is durable, strong and will not damage the shaft.


General operating window for standard CG-1 bearing with internal ring oil lubrication system.

The capacity chart shown represents typical application ranges. The bearing is capable of operating under a broad array of challenging parameters when proper allowance is made during the specification phase.

All CG-1 bearings offer a standard Dodge RTL series dimensions on shaft centerline, bore length, diameter, and expansion bearing width and diameter. The bearings feature a fully split design, multiple ports pre-tapped for thermal probes, oil system adapters, and sensors. Our bearings do not require any form of external supplies, such as electricity or water supply. They come standard with high temperature contact seals and oil ring lubrication.

Shaft Size Low Load Condition High Load Condition High Speed Condition

3 7/16 300 RPM/2300 lbs 2600 RPM/4330 lbs 3000 RPM/3600 lbs


4 7/16 300 RPM/5280lbs 2000 RPM/7350 lbs 2600 RPM/5440 lbs



6 300 RPM/17000 lbs 1200 RPM/17700 lbs 1800 RPM/12200 lbs

Shaft Size Low Load Condition High Load Condition High Speed Condition Oil Flow Rate (GPM)

3 7/16 200 RPM/1580 lbs 5000 RPM/7460 lbs 5000 RPM/7460 lbs 2.25



4 15/16 200 RPM/4600 lbs 3000 RPM/16300 lbs 3500 RPM/15300 lbs 3


6 200 RPM/6000 lbs 1200 RPM/20200 lbs 2500 RPM/13800 lbs 4.5

Shaft Size Max Thrust Load Min Radial Load

3 7/16 2500 lbs 600 lbs

3 15/16 3100 lbs 790 lbs

4 7/16 3600 lbs 1000 lbs

4 15/16 4500 lbs 1230 lbs

5 7/16 5000 lbs 1500 lbs

6 6500 lbs 1800 lbs

General operating window for standard CG-1 Bumper thrust take-up

General operating window for standard CG-1 bearing with external circulated oil lubrication system.


•Elimination of external cooling lines and associated hardware

•Green Technology: Zero water consumption and waste stream

•Fewer parts and resource requirements improve system reliability

•Can be used in high temperature applications that previously required roller bearings

•Utilizes lubricants engineered for long life

By eliminating the external water supply for a single typical Babbitt 3-7/16” bearing flowing water at the recommended rate of 3.5 GPM, our bearing will save an annual cost of $2578/year of operation. Furthermore this will proportionally reduce the volume of liquid entering the local MSD, improving the waste water output of the location.

Our water cost estimate is based on the international and domestic industrial water cost pricing provided by the Organization for Economic Co-operation and Development, the average cost per cubic meter of water in the US is $0.37.


•Production:100% designed, manufactured and inspected in the United States.

•Materials: Made from domestic cast iron and alloy steel

•Quality: All components are manufactured on multi axis CNC’s, from high strength materials, and inspected during and after production.

•Delivery: MTO standard lead time of 8-10 Weeks

•Price: Pricing is comparable to the Dodge RTL Sleeve Oil


The patent pending USPO # 61/346620, the CG-1 Bearing performs under the same conditions as the Dodge RTL SleeveOil, but without the use of external cooling.

High Temp Bearings [email protected] Office: 513-608-6165

Sales: 334-799-5890


http://www.hightempbearings.com/

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CG-1 Hydrodynamic Bearing V1

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