BUN support unit type and installation steps


Today, the BUN brand was popular worldwidely from 2007. our company was processing a screw support for a Japanese brand in the early period! The BUN brand also manufactures screw-on square lock nuts, which are the old-name manufacturers in Dongguan. Today I would like to introduce you the common types of BUN support and installation steps!

The support base is generally divided into a fixed side (K exa: BK12) and a support side ( F, exa BF12). They all have JIS class 5 angular contact ball bearings adjusted with preload.
The ball screw support seat is equipped with an ultra-compact angular contact ball bearing with a contact angle of 45° developed for the ultra-small ball screw, which achieves high rigidity, high precision and stable rotation performance.

The support unit on the support side uses deep groove ball bearings. Supporting units such as EK, BK type internal bearings are filled with an appropriate amount of lithium soap-based grease, sealed with a special sealing gasket, can be directly installed, long-term use.
Support type:
Standard and economic description:
1. Standard type:
Fixed end: It adopts bevel ball bearing and pre-compression combination. It is divided into (L) light preload, (M) medium preload, and (H) heavy preload.
Support end: Adopt deep groove ball bearing.
2. Economic type:
The fixed end adopts deep groove ball bearing and is divided into general (G) and high rigidity (R).
3, high load heavy:
The TAC angled ball bearing is used in combination with preloading and is divided into a face-to-face (DF) combination and a three-row (DFD) combination.
Mounting support
(1) Mount the fixed side to the screw.
(2) Insert the fixed side, tighten the lock nut, and fix it with the spacer and the hexagon socket fixing bolt.
(3) The support side bearing is fixed to the screw shaft by a snap ring and is fitted into the support side support seat.
Note 1: Do not disassemble the support unit.
Note 2: When inserting the screw shaft into the support unit, be careful not to turn the flange of the oil seal.
Note 3: When pressing the spacer with the hexagon socket fixing bolt, to prevent looseness, apply the adhesive to the hexagon socket fixing bolt and tighten it.