Bear it - Import export

Magnetic ball bearings are increasingly important in CO2 laser systems and fluid pumps as well as applications in the optics industry. GMN has led the development and manufacture of safety bearings, so-called ‘touchdown bearings’ since the middle of the 1990s."

In addition to our special bearings, GMN develops and manufactures ready-to-install, complex bearing systems. By assigning your entire bearing project to GMN you can fully focus on your core competencies.

Based on our many years of experience in developing and manufacturing high-quality machine components, GMN has specialized in the area of high-precision ball bearings as well as the production of high-performance and long-lived deep groove and spindle ball bearings to meet – or even exceed – the highest precision classes P4 and ABEC 7. Certification under international standards ensures the highest precision in the development and manufacturing of GMN ball bearings and guarantees constant, outstanding qualities related to speed suitability, stability and longevity. The broad product range includes a large selection of standard solutions as well as requirements-tailored special designs.

GMN offers a complete range of sizes, types and designs with its spindle ball bearings in standard sizes S, SM and KH. In conventionally oil-lubricated spindle bearings, lubricant is supplied through a lateral oil supply. GMN spindle bearing designs +A, +AB, +L and +LB provide direct oil supplies to the lubrication point through a bore in the outer ring. GMN spindle bearing designs +AG ensure the highest possible machine running times without complex oil supply systems. These feed the lubricant directly into the lubricating point through holes in the outer ring. The developed high-performance, separable BNT and BHT designs ensure fast and uncomplicated handling, especially with regard to assembly and maintenance.

The use of high-precision radial groove ball bearings is especially recommended when axial forces are supported in two directions, but the installation space makes the use of a spindle bearing pair impossible; plus when the best-possible guide for rotating components is needed, but the RPM requirements are less important. Depending upon the load capability and the installation space available, GMN provides deep groove ball bearings in sizes 60 and 62 as per DIN 625. A large selection of various cages, lubricants and covers make it possible to adapt GMN deep groove ball bearings to any application.

"Ball bearings with a material combination of bearing steel (inner and outer rings) and ceramic (balls) are called ‘hybrid’ ball bearings. All GMN ball bearings can be supplied as hybrid ball bearings. The material characteristics of ceramic balls in hybrid ball bearings result in significant increases in machine performance (in comparison to ball bearings using steel balls), especially under critical conditions.

For many applications such as machine tools, medical devices, vacuum and measuring equipment, as well as complex bearing systems, GMN develops and offers special ball bearings which meet our customers’ specified requirements.

Lubrication of rolling and friction bearings at operating temperatures around +170°C up to rotating speed limit For example, smaller bearings of exhaust-gas turbochargers, hot-air fans, hot-water pumps, washing machines and laundry dryers, as well as clutch pressure and release bearings etc. Also suitable for plastic/plastic sliding pairs Advantages and benefits Highly effective due to optimum temperature-stable silicone grease formula Excellently suited for grease lubricating points subject to changing temperature loads Broad range of uses outside normal grease performance areas

Lubrication of highly stressed and relatively slowly running gears where due to leakage a grease must be used instead of oil For drives under high and shock load Chain lubrication of e.g. hollow pins, chains in the conveyor and transport field, under the influence of water and vapour and at higher operation temperatures Bearing lubrication of roller and plain bearings at annealing furnaces and drying equipments, manipulators and robots, conveyor and cooling systems, machines of preserve industry, steam sterilizers, etc. Advantages and benefits Best use in corrosive operation conditions with high operation temperatures and high pressure and shock load Economically due to optimum formulation Reduces wear and thereby downtime and enables long-term lubrication Ropy, strongly adhesive, temperature and water resistant, noise dampening, high-load and shock absorbing

Lubrication of friction, rolling and pivoting bearings, splined shafts, knockout spindles and sliding surfaces of all kinds under normal loads and all sliding speeds common for grease lubrication Supports sealing of bearings and corrosion protection Advantages and benefits Highly effective due to optimum combination of components Good resistance to pressure and water Fewer downtimes and repairs as a result of reduced wearing Resistant to ageing and oxidationFor highest effectiveness, carefully clean the lubrication point, for example with OKS 2610/OKS 2611 universal cleaner. Before filling for first time, remove anti-corrosion agent. Fill the bearing such that all functional surfaces are certain of being greased. Fill normal bearings up to about 1/3 of the free space inside the bearing. Low-speed bearings (DN value < 50,000) and their housings should be filled completely. The bearing and machine manufacturer's instructions should be observed.

Grease lubrication of plain and rolling bearings at high temperatures, e.g. in painting and drying ovens, converters, pouring ladles, heating systems, hot-air fans, charging cranes, vulcanising systems and electric motors Advantages and benefits Excellently suited for long-term lubrication of grease lubricating points subject to high-temperature loading Highly effective due to optimum solid lubricant formula Broad range of uses above normal grease performance areas Reduced maintenance and lubricant costs due to possible safety lubrication Drip-free hot bearing grease for long-term and safety lubrication in a broad temperature range For best results clean the lubricating point carefully. Clean with solvents like OKS 2610/OKS 2611 Universal Cleaner. Remove the corrosion protection ahead of the initial filling. Fill the bearings in a way that all the functional surfaces for sure get the grease.

Copper screw-in sensor, Pt100, NTC thermistor. Compact and robust design. With Pt100 or thermocouple measuring element. Simple assembly via screw-in thread. Suitable for bearing temperature measurement. Maintenance-free. Compatible measuring transducers, limit value switches and analogue indicators available.

Stainless-steel stick-in sensor, thermocouple. Compact and robust design. Ideal for shipbuilding, thanks to their construction and approvals. Simple assembly via compression fitting. Type K or type J thermocouple; two thermocouples per sensor available as an option. Available in various immersion depths. 90° cable outlet. Increased measuring range up to 800 °C. Available in various cable lengths.

In rotary encoders with integral bearing and stator coupling, the graduated disk of the encoder is connected directly to the shaft to be measured. The scanning unit is guided on the shaft via ball bearings, supported by the stator coupling. During angular acceleration of the shaft, the stator coupling must absorb only that torque resulting from friction in the bearing, thereby minimizing both static and dynamic measuring error. Moreover, the coupling mounted on the stator compensates axial motion of the measured shaft. Other benefits of the stator coupling are: Simple mounting Short overall length High natural frequency of coupling Hollow-through shaft possible

In rotary encoders with integral bearing and stator coupling, the graduated disk of the encoder is connected directly to the shaft to be measured. The scanning unit is guided on the shaft via ball bearings, supported by the stator coupling. During angular acceleration of the shaft, the stator coupling must absorb only that torque resulting from friction in the bearing, thereby minimizing both static and dynamic measuring error. Moreover, the coupling mounted on the stator compensates axial motion of the measured shaft. Other benefits of the stator coupling are: Simple mounting Short overall length High natural frequency of coupling Hollow-through shaft possible HEIDENHAIN ERN, ECN and EQN rotary encoders with integral bearing and mounted stator coupling are characterized by simple mounting and short overall length.

In rotary encoders with integral bearing and stator coupling, the graduated disk of the encoder is connected directly to the shaft to be measured. The scanning unit is guided on the shaft via ball bearings, supported by the stator coupling. During angular acceleration of the shaft, the stator coupling must absorb only that torque resulting from friction in the bearing, thereby minimizing both static and dynamic measuring error. Moreover, the coupling mounted on the stator compensates axial motion of the measured shaft. Other benefits of the stator coupling are: Simple mounting Short overall length High natural frequency of coupling Hollow-through shaft possible

In rotary encoders with integral bearing and stator coupling, the graduated disk of the encoder is connected directly to the shaft to be measured. The scanning unit is guided on the shaft via ball bearings, supported by the stator coupling. During angular acceleration of the shaft, the stator coupling must absorb only that torque resulting from friction in the bearing, thereby minimizing both static and dynamic measuring error. Moreover, the coupling mounted on the stator compensates axial motion of the measured shaft. Other benefits of the stator coupling are: Simple mounting Short overall length High natural frequency of coupling Hollow-through shaft possible HEIDENHAIN ERN, ECN and EQN rotary encoders with integral bearing and mounted stator coupling are characterized by simple mounting and short overall length.

HEIDENHAIN angle encoders with integral bearing are characterized in particular by very high system accuracy. The integral bearing in the encoders eliminates any effect on measuring accuracy from the bearing of the machine components. The integrated stator coupling in the RCN/RON/ECN series encoders guarantees lowest possible error from the effect of tolerances in the shaft coupling. All angle encoders with integral bearings feature shaft seals that ensure resistance to contamination (IP64 protection). These encoders enjoy an entire spectrum of possible applications in machine tools, measuring machines, telescopes, printing machines and many other areas. Incremental measuring method Large hollow shaft diameter (up to 60 mm) Integrated stator coupling Compact size for limited installation space System accuracy includes the deviation caused by the shaft connection Outstanding dynamic response Simple installation Typical field of application: Rotary tables Swivel heads

In rotary encoders with integral bearing and stator coupling, the graduated disk of the encoder is connected directly to the shaft to be measured. The scanning unit is guided on the shaft via ball bearings, supported by the stator coupling. During angular acceleration of the shaft, the stator coupling must absorb only that torque resulting from friction in the bearing, thereby minimizing both static and dynamic measuring error. Moreover, the coupling mounted on the stator compensates axial motion of the measured shaft. Other benefits of the stator coupling are: Simple mounting Short overall length High natural frequency of coupling Hollow-through shaft possible

Rotary encoders without integral bearing operate without friction. The two components - the scanning head and the scale disk, drum, or tape - are adjusted to each other during assembly. The benefits are: Large diameter of hollow shaft For high shaft speeds No additional starting torque In addition to the system accuracy, the mounting and adjustment of the scanning head normally have a significant effect on the accuracy that can be achieved with rotary encoders without integral bearings. Of particular importance are the mounting eccentricity and radial runout of the measured shaft. The inductive rotary encoders ECI/EQI 1300 are mechanically compatible with the photoelectric encoders ExN 1300: the shaft is fastened with a central screw. The stator of the encoder is clamped by an axially tightened screw in the location hole.

Dry, round, dust-free and free flowing shot sleeve- and plunger lubricant Type Wax with a micro-milled graphite content of 18 - 20 % Appearence black, round Sizes 0,5 - 1,0 mm 1,0 - 1,6 mm 1,6 - 2,0 mm Properties and Advantages • approved on all sizes of plungers • anti-static and dust-free • instant melting • capillary action guarantees optimal lubrication • minimal dosing is highly recommended • reliable and precise dosing is guaranteed when using Tribo-Chemie Beads Dispenser 3D

Dry, dust-free, spherical, free-flowing shot sleeve lubricant Type Wax with a micro-milled graphite content of 10 % Appearence black, round Sizes 0,5 - 1,0 mm Properties and Advantages • same properties as Isolat® 80 G, but with reduced graphite content