495 / 295 /190 mm
M8 1.25 mm pitch
Delrin (acetal )
35 x 13 x 31 mm
2 hole fixing
37 x 37 x 12 mm
4 hole fixing
25 x 25mm
A complete set of 3 lead screws, 3 anti-backlash delrin nuts, and 6 flange bearings with 12 M8 stainless steel fixing nuts, suitable for a desk-top CNC machine.
The 3 stainless steel lead screws are 495 mm, 295 mm and 190 mm overall length. This set has been designed specifically for the CNC hobbyist in mind, to provide a low cost solution for providing linear motion when coupled with a stepper motor. This lead screw diameter is 8 mm with a standard M8 1.25 mm pitch.
This pitch is ideal for small hobby CNC machines, where large speeds are not required, as the fine pitch provides good precision whilst requiring minimal force from a stepper motor, and thus is suitable for direct drive with small stepper motors. Due to the high resolution (0.00625 mm per full step on a standard 1.8 degree motor) vibration is negligible and a simple drive can be used without micro-stepping, thus further reducing cost.
The lead screws are supplied polished and fitted with our delrin anti-backlash nuts which has a standard 1.25 mm pitch. Two flange bearings are supplied for each lead screw which can be easily mounted onto a flat surface of the machine member.
The delrin nut is manufactured from grade A delrin (Acetal homoplymer B) supplied from a reputable European manufacturer. This material is extremely hard wearing, and normally does not require lubrication. Due to its mechanical properties there is minimum wear and backlash. The form of the nut is as a rectangular block with 2 mounting holes, and as such can be directly attached to the moving base, without need for brackets or additional items.
The compact flange bearings provide convenient easy to mount bearings in a housing with a matching 8 mm bore for the lead screw and has an 8 mm bore diameter.The compact size of this bearing is ideal for small CNC machines where space is limited. The housing is made of a sturdy high density composite material and is fitted with an 8 mm bore bearing. The 6 flange bearings are supplied with 12 stainless steel nuts for fixing to the stainless steel lead screw.
This item is shipped by registered international air mail