
Bi-directional lead screws which are machined left handed and right handed thread on a shaft,and nuts are mounted on each thread.Both right and left nuts move symmetrically,precise positioning,and width adjustment by single motor.ALM nut configuration is designed freely to suit customer's requirements.
●ALM Bi-directional Lead Screw Basic Information
| Lead screw material | ASTM1045,SUS303,SUS304,SS316,SS316L (other customized materials,according to customer requirements) |
Lead nut material | Brass,Tin bronze,Phosphor bronze,Aluminum bronze,POM,PEEK,nylon,POK,Stainless steel, 1045,Zinc alloy,Brass+Plastic,Aluminum alloy+Plastic,Brass+Steel,Self lubricating(No oil type) |
Available surface coating | Zinc-plated,nickel plated,hard chromium plated,fluorine coated,tungsten disulfide,black chorme plated |
| Quality standard | ISO2901-4,DIN103 |
| Clearance | 7e,higher precision is available upon request |
| Note:Customized nuts and end machining are available upon drawing | |
●ALM Bi-directional Lead Screw Nut Structure
The following pictures show the common ALM bi-directional lead screw nut structure.Other lead nut structures can be manufactured according to customer's drawings.

COM series

CHT series

CNN series

WNM series

COT series

CXT series

COU series

HNM series
●ALM Bi-directional Lead Screw Shaft End Machining
ALM provides lead screw shaft end machining custom services,the following is the common shaft end machining drawing,other lead screw shaft end machining according to customer requirements.

Milling Circlip

Processing Thread

Milling Keyway

Milling Slotted Drives

Milling Hex Socket

Milling Flat
●ALM Bi-directional Lead Screw Intelligent Manufacturing and Inspection