ZM Middle Flange
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Miba Industrial Bearings ZM Center Flange Mounted Bearing

Miba Industrial Bearings 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 ZM design The Miba type ZM horizontal bearing is designed according to DIN 31 694 norm specifications for a wide range of heavy duty applications (electrical machines, turbines and test rigs). The...

Electrical insulation To prevent stray currents conducted by the shaft, Z-bearings can be supplied electrically insulated as an option. In this case, the spherical seat of the housing is coated with a wear-resistant and temperature-resistant synthetic material. Upon request, a grounding wire is provided to short out this insulation, passing through a thread hole (M12x1.5) in the housing. Sealing The seals are selected for the different operation conditions and environments and for the requested protection level. The standard arrangement is the floating labyrinth seal (IP 44) made of high...

Dimensions in millimeters / Dimensions not shown see page 8 d4 = Earthing device or plug M12x1,5 d5 = Oil inlet (oil circulation or recirculating pump) d6 = Provision for thermometer G 1/2” d7 = Oil sight glass or oil outlet (oil circulation) d8 = Plug (connection for heater, oil sump thermometer, water cooler) for size 7: G 1/2” for size 9- 22: G 1 1/4” d9 = Up to size 14: 011, From size 18: 013 d17 = Bore for dowel pins 09 d26 = Oil drain plug for size 7: G 1/4” for size 9 and 11: G 3/8” for size 14 and 18: G 1/2” for size 22: G 3/4” d27 = Oil filling or breather for size 7: G 1/4” for...

ZM 28 bearing dimensions Miba has completely revised the ZM 28 housing design to meet market needs in several aspects, improving bearing performance, extending design limits and facilitating assembly, whilst maintaining the equipment interface as in the previous design. This means that machine flange and bolt circle dimensions are the same as before. The Miba bearing liner remains unmodified and is still interchangeable with those of our competitors. The tried and tested Miba machine seal which has air passages for pressure compensation passing through the body from the internal chamber to...

11 Limit dimensions of the shaft acc. DIN 31 698, form and positional tolerance and surfaces roughness acc. to DIN 31 699. 21 Standard thrust clearance is 0,5 mm. If reversible thrust loads or shock load occur, dimension b20 can be reduced by 0,2 mm. If a locating bearing (shell type B,K) is needed only for test runs, dimension b20 can be enlarged by 4 up to 6 mm. 3) If the non-locating bearing must allow larger motions (due to heat expansion or to large thrust clearances caused by the unit), dimension b21 can be enlarged. 4) The dimension b23 is valid for a bearing with a floating...

Types and dimensions of seals 1 // Types and dimensions of seals Floating labyrinth sea (Protection IP 44) Rigid seal* (Protection IP 44) *Can be combined either with a bolt-on baffle (IP 55) or with a dust flinger (IP 54). with bolt-on baffle with dust flinger Max. axial movement of the dust flinger ± 6,5mm (Meets NEMA spec.) Special seal designs for specific applications upon request.

1 // Type Z Miba plain bearing Example of a bearing designation: 2 // Housing Z M N L B - 11 - 125 M Centre flange mounted bearing, finned 3 // Heat dissipation N Naturally cooled by convection Z Lubrication by oil circulation with external oil cooling Lubrication by oil circulation with external oil cooling for X high oil throughput W Finned water cooler in the oil sump U Recirculating oil pump and natural cooling T Recirculating oil pump and water cooler in the oil sump Miba Centre flangemounted bearing, finned bearing, naturally cooled by convection, plain cylindrical bore with loose oil...

+ Europe 2 sites North America 3 sites South America 1 site • Miba Industrial Bearings USA Miba Industrial Bearings U.S. LLC 1111 Cedar Creek Rd, Grafton, WI 53024, USA MIBUSG_Sales@miba.com USA Miba Industrial Bearings U.S. LLC 3300 E 8th St. Columbus, NE 68601, USA MIBUSG_Sales@miba.com USA Contacts: Germany Miba Industrial Bearings Germany GmbH Robert-Bosch-Breite 10 C 37079 Gottingen, Germany MIBG_sales@miba.com Germany Miba Industrial Bearings Germany Osterode GmbH & Co. KG Rolandsweg 16-20 37520 Osterode, Germany MIBG_sales@miba.com Brazil Miba Industrial Bearings Brasil Ltda Av....