Feature

●Ball screw diameter: 20mm; Lead / Pitch: 5mm; Total length: 33.07 inch / 840mm; with double ball screw nut and with standard end machining for BK/BF15. The lead time is 7-10 Business Days except for for Chinese National Day holiday and Spring Festival
●WARRANTY: Within 3 months receiving the ball screw, if there is any problem except for damage caused by man-made or improper operation, with the premise of choosing the proper product model and ensuring the working environment ventilatedly and tidily, we will send a new ball screw for free or give a total refund. What you need to do is to message us through Amazon
●Double Nut Ball Screw assembles two inner-circulate nuts together, therefore reduces the backlash of ball screw. The stability is then enhanced and the accuracy is up to 5. This design is especially good for CNC machine centers
●No stick-slip effect, low friction, low operation noise, heats up less, reduce driving power required, and make service life longer
●Double nut ball screw model includes DFU1604, DFU1605, DFU2005, DFU2505, DFU2510, DFU3205, DFU3210, DFU4005, DFU4010, DFU5010, DFU6310, DFU8010; Ball screw nut, nut   housing, coupling, ball screw support BK, BF, EK, EF, FK, FF and end machining service are available, please let us know

[L: 102.36 in   &  2600mm DFU 2005 NUT]




[L: 88.58 in   &  2250mm DFU 2005 NUW]





Description

Specifications:
Brand: Mssoomm
Manufacturing Process: Rolled Thread
Precision: C7 Grade, C5 (Grinding grade) is also available, please message us
Material: GCr15 steel
Model: DFU2005
This item includes:
1pcs Ball Screw DFU2005 RM2005 20mm Length 33.07 inch / 840mm (with standard end machining for BK/BF15)
1pcs Double Ballscrew Nut
Lead Time: 7-10 Business Days except for for Chinese National Day holiday and Spring Festival

Customizable Processing and Technical Support:
1. We can provide any length that you want, and please let us know what lengths are suitable for you.
2. If you need end machining according to your drawings, please tell us before order.
3. As a professional seller, we can provide complete information of the products.（Contains CAD drawings and 3D modeling files）Please contact us.
4. All products are provided lifetime technical support.

Introduction and Application:
Double ball nut designs produce preload in one of two ways: through tension between two single nuts, or through an offset in the lead of a single nut.
1. The first method uses a spring or a spacer to create tension between two nuts that are mechanically coupled.
During machining of the ball nut raceways, an offset is created in the lead, approximately halfway down the length of the nut body. This lead offset creates preload within the ball nut.
Because there are no spacers or springs required, the lead offset method is more compact than a double nut design, but it reduces load capacity. With greater complexity and higher cost, double nut designs are typically used when high preload (7 percent or greater) is required.