flange mount bearing
Classification of linear bearings: According to manufacturing size: standard linear bearings, gap-adjustable linear bearings, open linear bearings, extended linear bearings, universal linear bearings flanged linear bearings can be divided into: round flange type, method Blue type, oval flange type, guide round flange type, guide method blue type, guide oval flange type, extended round flange type.
Classification by shape:
1: Straight type (shape like a cylinder, generally installed with a snap spring, for occasions with a small installation size)
2: flange type (the end or middle has a mounting flange, which can be installed with screws, flanges are generally divided into three types: round, square and trimmed)
3: Open type (shape like straight tube, with axial slits on the surface, used in situations where gap adjustment is required, divided into two types: large opening and small opening)
1. Determine the size parameters of linear bearings: In many cases, the size of the bore of a linear bearing has been specifically limited by the structure of the machine or device. Regardless of whether the working life, the static load safety factor and the economy have met the requirements, before the final selection of the remaining dimensions and structural form of the linear bearing, the size calculation must be performed.
2. Static load linear bearings: Calculating the static load safety factor Fs helps to determine whether the selected linear bearing has sufficient static load rating. FS = CO / PO where FS static load safety factor, CO rated static load [KN], PO equivalent static load [KN] static load safety factor FS is a safety factor to prevent permanent deformation in the contact area of rolling parts.
3. Dynamic load linear bearings: The standard method for calculating dynamic load linear bearings as specified in DIN ISO 281 is based on material fatigue failure (pitting), and the life calculation formula is: L10 = L = (C / P) P [106 turns ] Where L10 = L nominal rated life [106 revolutions] C rated dynamic load [KN] P equivalent dynamic load [KN] P life index L10 is the nominal rated life in units of 1 million revolutions [106 revolutions] C rated dynamic load [ KN] P Life Index L10 is the nominal rated life in 1 million revolutions.
4. Variable load and variable speed: If the value and speed of the linear bearing dynamic load change with time, then corresponding consideration must be taken into account when calculating the equivalent load. Continuous load and speed curves are replaced by piecewise approximations.
5. Minimum load of linear bearing: Too small load plus insufficient lubrication will cause the rolling element to slip and cause damage to the linear bearing. The minimum load coefficient of the cage imported bearing P / C = 0.02, and the minimum load coefficient of the full-load linear bearing P / C = 0.04 (P is equivalent dynamic load, C is rated dynamic load).
Installation and adjustment of linear motion ball bearings
Before assembly, the inside of the bearing must be cleaned and greased.
When the bearing is pressed into the bearing seat, it should be pressed against the end face of the outer ring with a special installation tool, as shown in the figure below. It is not allowed to knock the bearing directly to avoid deformation.