INA bearing classification two

INA Angular Contact Ball Bearings

Single row angular contact ball bearings

Single row angular contact ball bearings are self-retaining units with solid inner and outer rings, balls and nylon, steel or brass cage assemblies. The inner and outer raceways are offset from each other in the axial direction of the bearing. There are open and sealed bearings. They have very little self-aligning ability.

Many sizes of angular contact ball bearings are designed by X-life. These bearings are shown in the dimension tables. Bearings in X-life quality have an improved raceway shape and optimised surfaces. This significantly increases the fatigue limit load of the bearing. In the calculation of the revised service life, the life value has been increased by more than 50%. Therefore, in certain applications, smaller bearings can be used if necessary.

Double row angular contact ball bearings

Double row angular contact ball bearings are units consisting of solid inner and outer rings, balls and cages made of polyamide, stamped steel, or brass. They are similar in structure to a pair of single row angular contact ball bearings in an O-shaped arrangement, but are more compact. They are available in different sizes of contact angles and bearing ring designs.
Bearings can be open and sealed. Due to the production technology used, open bearing outer rings have cutting grooves for seals or shields. Sealed bearings require no maintenance and are especially suitable for economical bearing applications. The self-aligning range of angular contact ball bearings is very small.

INA self-aligning ball bearings
Self-adjusting ball bearings are double-row self-retaining units consisting of a solid outer ring with a concave grooved plate, an inner ring with a cylindrical or conical hole, and a ball and cage assembly. These bearings can be open or sealed.

INA bearing unit and bearing housing
INA Housings and Bearings Bearing assemblies are proven and successfully used in machinery, factories and other equipment.
INA bearing housings are generally made of gray cast iron material. Cast steel and nodular graphite cast iron housings are also available on request. Because the bearings are usually lubricated with lubricating oil, the lubrication effect can be maintained for a long time after the initial grease filling, so most bearing seats do not have lubrication holes. However, bearing housings are marked and lubrication holes can be drilled if required. When relubrication is carried out, it must be ensured that excess oil can escape.

The housing bore is usually machined to allow the bearing to move in it and can act as a non-locating bearing. Locating bearing arrangements can be achieved by inserting locating rings, if listed in the table. The locating ring must be specially ordered. Housings without locating rings are used in non-locating bearings INA bearing unit version (L) or locating bearing version (F).

All raw exterior surfaces and housing parts of the INA housing are coated with a universal paint (colour RAL 7031, blue-grey) This paint can be coated with all resins, polyurethanes, acrylics, epoxy resins, chlorinated rubbers, cellulose as well as acid Hardened hammer grey enamel finish. The corrosion protection of the machined inner and outer surfaces can be easily removed.

Depending on the operating conditions, contact seals, non-contact seals, and combinations thereof are seals that can be used for bearing housings.

INA Precision Machinery Products

Linear bearings are ideal for transmitting motion. For slew bearings, the distance is designed to take into account whether the operation is rolling or sliding. The requirements for linear components vary depending on the field of application. In conveying and feeding systems, speed and precision are required at the same time, for example, in measuring instruments, the emphasis is on precision and rigidity. Finding the right linear guidance system for a specific application, a complete product offering and careful consultation are important. INA offers: A wide range of linear products and professional services: Going a step further, accessories that are properly matched to a certain application optimize the comprehensive standard range of rail systems.

Each linear product has design features that make it uniquely suited to a particular linear arrangement. In general, the selection and application principles of a rail system can only be reduced to a point, as you need to consider more and more factors and weigh the pros and cons. In addition to load, acceleration, speed, and travel, factors such as temperature, lubrication, vibration, installation, maintenance, etc. need to be considered.

Linear Rolling Bearings

Linear rolling bearings include linear guide systems, roller guide systems, optical shafts and linear ball bearing guide systems, flat cage guide systems, linear recirculating ball or roller guide systems, and drive units (actuators and tables). In addition, INA also manufactures special miniature guidance systems for small design applications. For example, applications in mechatronics and precision industries. These compact elements offer very high load-carrying capacity, low friction, high rigidity, and a choice of cage and cycle types. Due to their compact design, they can replace solutions that require a lot of space.

These guidance systems include a guide/slide unit, a linear ball bearing/optical shaft system or a guidance unit with rollers or ball-flat cages in between. The drive unit is a single-axis or multi-axis complete system, with a mechanical guidance system, a motor and a controller matched with the system.

The linear guide system is a ready-to-install positioning guide, mainly without travel restrictions. The flat cage guide system and the linear guide pair are used in applications with limited travel due to the cage. The slider supports forces from all directions - except the direction of motion - and moments about all axes. The optical axis guidance system with linear ball bearings is suitable for supporting loads from two directions and can compensate for static deviations of the optical axis. Since high rigidity and high precision are often required in operation, most units are preloaded or can be preloaded when installed. Due to different accuracy and preload levels, different guidance and positioning requirements in applications can be met.

In order to determine the size of the guidance system, the first consideration is the level and type of load and the requirements for slider life and slider reliability. In general, for the same overall dimensions, roller runner blocks can withstand higher loads than ball-type runner blocks. Ball guidance systems are typically used for small to medium loads and highly dynamic movements, and roller guidance systems are used for high loads. Plate cages and recirculating roller guidance systems are also suitable if high loads are to be supported.

Linear plain bearings

In rolling bearings, the bearing rings are separated by rolling elements (rolling elements), and in sliding guide systems, the movable part slides on static guides or shafts. Depending on the type of track system, sliding layers are on movable or rigid components. Lubricating oil is embedded in the sliding layer to achieve the purpose of lubrication.

Linear plain bearings are linear locating bearings with infinite stroke length. These linear guidance systems may be miniature sliding guidance systems, Permaglide linear sliding bearings and Permaglide linear sliding bearing units and flat guidance systems. A miniature sliding guide system consisting of a rail/slide system and maintenance-free sliding layer, the Permaglide linear plain bearing unit is a low maintenance Permaglide bushing mounted in a light metal ring. The flat guide system is a guide system for sliding layers on guide rails with extremely low maintenance requirements.

The sliding guide system is almost wear-free, has a high static bearing capacity, is insensitive to shock loads and pollution, has low noise, and operates without stick-slip. Maintenance-free sliding guide system requires no lubrication, low maintenance material requirements, good extreme operating characteristics. Due to its multi-purpose properties, sliding guide systems are used in many fields, especially where maintenance-free or low-maintenance is required, and there is a possibility of insufficient lubricating oil or where lubricating oil cannot be used.

The service life of a linear sliding guide system depends on the load, sliding speed, temperature and operating cycle. There are some additional limiting factors, including contamination, corrosion from dry running, or lubricant aging from insufficient lubrication. Therefore, the basic rating life is for reference only.

Many external influences on linear plain bearings cannot be estimated. Therefore, the service life of the guidance system tested under operating conditions is the most accurate and reliable.