ZT Thrust and Guide Bearing

Product catalog summary

Description of the Pedestal Bearing
Miba ZT thrust bearings are engineered to handle high thrust loads with a modern design that ensures effectiveness in demanding applications. The housings are made from nodular cast iron EN-GJS-400-15, providing high mechanical resistance, excellent heat dissipation, and low vibration levels. They include standard features like thread holes for temperature monitoring and oil management, and can be customized with additional sensors.

Bearing Shells and Thrust Faces
The bearing shells are made of low carbon steel lined with high tin-based white metal, ensuring easy assembly and longevity. The thrust part consists of oscillating trapezoid-shaped pads for large thrust load capacity. A hydrostatic jacking system can be integrated for high load or slow speed applications.

Technical Features
The housing is cast in GGG40 with tilting thrust trapezoid-shaped pads and exclusive oil inputs for thrust pads and radial bushings. The design allows for independent oscillation of thrust pads and includes a thrust tilting pads ring that can be replaced when worn.

Oil Supply and Sealing
The bearing is designed for external oil circulation, with a system that allows emergency shutdowns without damage. Seals are selected based on operational conditions, with options for higher protection or pressurized seals available.

Temperature Control
Standard provisions are made for fitting thermo sensors in various parts of the bearing. The type of sensor depends on the readout equipment used.

Oil Selection and Bearing Calculation
Miba recommends using branded mineral oil inhibited against foaming, ageing, and oxidation. A state-of-the-art calculation program provides outputs like minimum oil film thickness, maximum pressure, and temperature.

Oil Flow
ZT bearings have four standard oil outlets, with larger quantities available upon request. The document provides detailed specifications for oil flow rates based on size and oil type.

Dimensions and Types
The document includes detailed dimensions for ZT bearings and shafts, and describes other types of Miba Z bearings, such as ZF, ZM, and ZR, each designed for specific applications.

Checklist and Contact Information
A checklist is provided for operational conditions, certification, and sensor requirements. Contact information for Miba Industrial Bearings' global locations is included.

Catalog excerpts

Miba Industrial Bearings ZT Thrust and Guide Bearing

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The Industrial Bearing Branch of the Miba Bearing Group produces hydrodynamic bearings and labyrinth seals for use in mechanical and plant engineering which are used in a wide range of high-performance applications. Our highly inspired teams, work diligently to serve our customers the best bearing solutions for each and every application. Content Side Description of the pedestal design 3 Bearing types and designations 9 Description of the pedestal bearing Miba ZT thrust bearings were designed to support high thrust loads. The modern design and high-performance standards ensure great effectiveness...

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Oil supply The bearing has been designed for an external oil circulation. If the lubricant supply fails, the thrust collar of the shaft delivers the lubricant from the oil sump to the oil scraper. The oil scraper delivers the oil to the radial and thrust parts. This system can be used to permit an emergency shutdown without damage in case an oil system failure occurs. The ZT bearings have an exclusive oil input for thrust pads and for each part of the two radial shells. Sealing The seals are selected according to the different operation conditions, environments and requested protection level....

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d3 = Thrust bearing oil inlets - G1/2" (4x) d4 = Thrust pads thermo sensors d5 = Breath (air filter) d6 = Radial bearing oil inlets - G3/4" (4x) d7 = Radial thermo sensors- G1/2" (4x) d8 = Hydrostatic oil inlets - G1/4" (4x) or breath. d9 = Local Thermometer - G3/4" (4x) Oil sight glass d10 = Oil outlet- According to: ANSI or DIN standards. d11 = Fastening holes d12 = Oil drain d13 = Oil sight glass Drawings shown here are for reference only. Some fin details, for example, may vary from size to size.

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Example of a bearing designation: 2 // Housing Z T Z L A - 50 - 500 T Pedestal bearing for high thrust loads 1 // Type Z Plain bearing 3 // Heat dissipation Z Lubrication by oil circulation with external oil cooling 4 // Shape of bore and type of lubrication L Plain cylindrical bore with oil disk 5 // Geometry of thrust bearing A Thrust tilting pads Other types of Miba Z Bearings: ZF - End flange mounted bearing The type ZF horizontal bearing is designed acc. to DIN 31693 norm specifications for a wide range of heavy duty applications (electrical machines, turbines and test rigs). ZM - Center...

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+ Europe 2 sites North America 3 sites South America 1 site • Miba Industrial Bearings Contacts: Germany Miba Industrial Bearings Germany GmbH Robert-Bosch-Breite 10 C 37079 Gottingen, Germany [email protected] Germany Miba Industrial Bearings Germany Osterode GmbH & Co. KG Rolandsweg 16-20 37520 Osterode, Germany [email protected] USA Miba Industrial Bearings U.S. LLC 1111 Cedar Creek Rd, Grafton, WI 53024, USA [email protected] USA Miba Industrial Bearings U.S. LLC 3300 E 8th St. Columbus, NE 68601, USA [email protected] USA Miba Industrial Bearings U.S. (Houston) LLC 1800 W 13th...

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ZT Thrust and Guide Bearing

ZT Thrust and Guide Bearing

Catalog excerpts

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