Sfy/Sfe Precision Ball Screw Shaft

Description

Ball Screw is one of the most efficient mechanisms of generating linear motion and axial positioning in machines. It is environment friendly due to the fact it is precise, fast and almost frictionless. The steel balls between the screw shaft and the free axial transferring nut enables for smooth and harmonic motion with minimum backlash.

Product Details

Ball screw pair and other transmission components of rolling friction can be considered to work almost without wear as long as abrasive particles and chemically energetic substances are avoided. But if you fall into dust in the raceway, or use dirty lubricating oil, it will now now not only hinder the ordinary operation of the ball, but also make the put on increase sharply.

Usually, felt ring is used to seal the nut pair. The thickness of felt ring is 2 ~ 3 times of the pitch, and the inner hole is made into the structure of thread, so that it tightly wraps the lead screw and is loaded into the slot at each and every ends of the nut or sleeve. In addition to soft felt, the sealing ring can be made of oil-resistant rubber or nylon material. Due to the direct contact between the seal ring and the lead screw, the dust-proof effect is better, but also increases the friction resistance second of the ball lead screw nut pair. In order to avoid this friction-resistance moment, a non-contact labyrinth sealing ring made of tougher plastic can be used, with the inner hole shaped in the opposite shape to the lead screw thread raceway and with a certain gap.

Product Description

The rotating nut ball screw is a high-efficiency feed screw with the ball making a rolling motion between the screw axis and the nut. Compared with a conventional sliding screw, this product has pushed torque of one-third or less, making it most appropriate for saving force motor power. The advantages of ball screw transmission: high transmission accuracy, smooth motion and no creeping phenomenon. The ball screw force is essentially rolling friction, and the friction resistance is small. The friction resistance has nearly nothing to do with the tempo of movement.

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