THK Rolling Ball Screw
is a low-cost feed screw, which uses precision roll forming and special surface grinding screw shaft, instead of precision ball screw used in the expensive grinding screw axis. The combination of the nut rolling surface of the ball after all grinding and finishing, compared with the traditional rolling ball screw, the axial clearance is small, with more smooth movement. In addition, various types have been standardized, the best choice according to use.
C7 grade lead accuracy is achieved: In addition to the C10 grade, the pitch error of the screw shaft has also been standardized for C7 and C8 grades and can be used for a wide range of applications.
Running distance error
C7: 0.05 / 300 (mm)
C8: 0.10 / 300 (mm)
C10: 0.21 / 300 (mm)
1. Screw shaft ball rolling surface roughness 0.20a the following:
shaft rolling surface in the precision after rolling, after special surface grinding, grinding and precision ball screw ball rolling surface, the surface roughness of 0.20a or less.
2. Nut steel ball rolling surface after grinding finishing: the rolling ball screw nut, but also all the precision ball screw, the same grinding and finishing, to ensure good durability and smooth sports performance.
3. Low price: Screw shaft after precision rolling, and then induction hardening or carburizing and quenching, and finally the surface of special grinding and other production. Compared with the precision ball screw grinding spiral groove, the price is very cheap.
4. Dust-proof effect is good: a small labyrinth seal or brush-type seal ring is inserted into the nut to obtain a low friction and high dust-proof effect, which improves the working life of the ball screw.
JPF type: This model uses single-nut central part as the spring structure to move the phase, through the constant pressure pre-pressure way to achieve zero stroke. Constant pressure pre-pressure ball screw to absorb the pitch error and eccentricity and to achieve a smooth movement. Bearer direction: The direction of the external bearer should be used as shown in the main bearer direction. When the direction of the load is opposite to the main load direction, the preload will disappear and the spring structure will be damaged. Therefore, the external load should be 0.1 × Ca or less.
No pre-press type
BTK Type: This is a small, round-shaped model with a bent tube embedded in a nut, and the top and bottom of the flange are machined to be flat with a low height of the shaft.
MTF type: screw shaft diameter of 6 ~ 12mm, lead to 1 ~ 2mm miniature models.
WHF type: This ball screw
with a new cycle structure, to achieve a DN value of 100,000 high-speed feed.
WTF-type nut with the traditional product diameter, mounting hole size can be interchangeable, so you can replace the WTF type.
(WHF1530, WHF2040, WHF2550)
Model BLK / WTF: These models provide stable movement at high speeds by using end caps.
CNF type: The large lead of the 4 load groove and long nut combination, so you can get a longer working life.
Square Nut Ball Screw BNT type: The square nut is machined with threaded holes for installation, with the machine
The body is assembled directly without the need for a seat.