Linear bearings are ideal for transporting motion. For rotating bearings, the design of the distance should be considered rolling or sliding operation.

 

The requirements for linear components vary depending on the application area. In transmission and feeding systems, speed and precision are required at the same time. For example, measuring instruments emphasize accuracy and rigidity. Finding the right linear guidance system for a specific application, complete product and careful consultation is very important. INA offers: Wide range of linear products and specialized services: The next step, with the right application of accessories, will optimize the comprehensive standard range of your rail system.

 

The design characteristics of each linear product make it particularly suitable for a particular linear arrangement. In general, the guideline system selection and application principles can only be reduced to a little, because you need to consider more and more factors and to weigh the pros and cons. In addition to load, acceleration, speed, travel, but also need to consider the temperature, lubrication, vibration, installation, maintenance and other factors.

 

Linear bearing

 

Linear rolling bearings include linear guide systems, roller guide systems, optical axis and linear ball bearing guide systems, plate cage guide systems, linear recirculating ball or roller guide systems, and drive units (actuators and tables). In addition, INA manufactures special miniature guidance systems for small design applications. For example, mechatronics and precision industrial applications. These compact components have a very large load capacity, low friction, high rigidity, and a choice of cages and circulation types. Due to their compact design, they can replace solutions that require a lot of space.

 

These guidance systems include a guide / slider unit, a linear ball bearing / optical axis system or guide unit with a roller or ball cage between them. The drive unit is a complete system of single or multiple axes with a mechanical guidance system, a motor and a system-compatible controller.

 

The linear guidance system is a ready-to-use positioning guide with no travel limit. Flat cage guidance systems and linear guides are used for limited travel due to cage. The slider supports forces from all directions - except the direction of motion - and moments around all axes. Optical axis guidance systems with linear ball bearings are suitable for supporting loads from two directions and compensate for static misalignment of the optical axis. Due to the high rigidity and precision often required during operation, most units can be preloaded or installed or installed. Due to different precision and preload levels, different guidance and positioning requirements in the application can be met.

 

In order to determine the dimensions of the guidance system, priority is given to the level and type of load and the requirements for the life of the slider and the reliability of the slider. Overall, the same overall dimensions, roller slider than the ball-type slider can withstand greater load. Ball guidance systems are commonly used for small to medium loads and high dynamic movements, and roller guidance systems for high loads. Flat plate retainers and recirculating roller guidance systems are also suitable if high loads are to be supported.

 

Linear plain bearings

 

In a rolling bearing, the bearing ring is separated by a rolling unit (rolling body) in which the movable part slides on a static rail or a shaft. Depending on the type of rail system, the sliding layer is on a movable or rigid component. Lubricating oil embedded in the sliding layer to achieve the purpose of lubrication.

 

Linear plain bearings are linear positioning bearings with infinite stroke length. These linear guidance systems may be miniature sliding guidance systems, INA linear plain bearings and INA linear plain bearing units, as well as flatbed guidance systems. The micro slide guidance system consists of a guide/slider system and a maintenance-free sliding layer. The INA Linear Plain Bearing Unit is a low-maintenance INA bushing mounted in a light metal ring. Slab guidance system is a guide system for maintenance of the sliding layer on the guide rail with extremely low requirements.

 

Sliding guidance system with almost no wear and tear, but also has a high static load carrying capacity, insensitive to impact loads and pollution, low noise, slip-free operation. The maintenance-free sliding guide system does not require lubrication, low maintenance requires materials, and excellent extreme operating characteristics. Due to its versatile nature, sliding guide systems are used in many fields, particularly where maintenance-free or low-maintenance, lubricious oil may or may not be used.

 

The life of the linear guide system depends on the load, sliding speed, temperature and operating cycle. There are some additional limiting factors, including contamination, corrosion in dry running, or aging of the lubricant that occurs when there is 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 piloted test system under operating conditions is the most accurate and reliable.